WO2019207555A1 - Système de distribution d'énergie électrique pour permettre une production d'énergie distribuée - Google Patents

Système de distribution d'énergie électrique pour permettre une production d'énergie distribuée Download PDF

Info

Publication number
WO2019207555A1
WO2019207555A1 PCT/IB2019/053471 IB2019053471W WO2019207555A1 WO 2019207555 A1 WO2019207555 A1 WO 2019207555A1 IB 2019053471 W IB2019053471 W IB 2019053471W WO 2019207555 A1 WO2019207555 A1 WO 2019207555A1
Authority
WO
WIPO (PCT)
Prior art keywords
epu
electrical power
power distribution
ovlo
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2019/053471
Other languages
English (en)
Other versions
WO2019207555A4 (fr
Inventor
Jian Carlo Decena Zapata
Gordon Currie
Neal George Stewart
Dean Gary STEPHENSON
Ben FRICKEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Edge Electrons Ltd
Original Assignee
Edge Electrons Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Edge Electrons Ltd filed Critical Edge Electrons Ltd
Publication of WO2019207555A1 publication Critical patent/WO2019207555A1/fr
Publication of WO2019207555A4 publication Critical patent/WO2019207555A4/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/12—Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28—Arrangements for balancing of the load in networks by storage of energy
    • H02J3/32—Arrangements for balancing of the load in networks by storage of energy using batteries or super capacitors with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H02J2101/24—Photovoltaics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/28—Wind energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/10—Local stationary networks having a local or delimited stationary reach
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/50—Networks for supplying or distributing electric power characterised by their spatial reach or by the load for selectively controlling the operation of the loads
    • H02J2105/51—Networks for supplying or distributing electric power characterised by their spatial reach or by the load for selectively controlling the operation of the loads according to a condition being electrical
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/12—Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load
    • H02J3/14—Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load by switching loads on to, or off from, the networks, e.g. progressively balanced loading
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Definitions

  • the present disclosure relates generally to electrical power distribution grid systems and more specifically relates to systems for enabling distributed energy generation (DEG) devices.
  • DEG distributed energy generation
  • the DEG device interface control electronics disables the DEG device interface.
  • This is generally referred to in the industry as overvoltage lockout (OVLO), and also undervoltage lockout (UVLO) when the voltage falls below the statutory lower voltage limit.
  • OVLO overvoltage lockout
  • UVLO undervoltage lockout
  • An OVLO is typically implemented with an electromechanical relay for safety reasons to guarantee a full and complete electrical disconnection from the distribution network grid, and especially for anti-islanding.
  • UVLO is implemented in the same manner.
  • the distribution network not only shuts off any DEG energy recovery from the DEG devices and stops batteries from charging, it also eliminates any FIT recovery for the end consumers.
  • the more exporting DEG interfaces connected to a local electrical power distribution network for example a neighborhood of domestic PV installations or exporting battery systems
  • a local electrical power distribution network for example a neighborhood of domestic PV installations or exporting battery systems
  • the greater the number of these DEG interfaces are disabled as the OVLO relays are activated by the DEG interface control electronics. This inhibits energy recovery and FIT for the end consumers. This also possibly stops batteries from charging as the OVLO relays of the grid-tied battery systems are also activated.
  • the DEG interface control electronics triggers the OVLO relay and shuts off the DEG energy recovery from the DEG device for the statutory disconnection time, which is typically two or three minutes.
  • the DEG device is reconnected again. The cycle repeats and hence the OVLO relay is oscillating or ‘chattering’ continuously locally at the POU, independent of the grid.
  • FIG. 1 illustrates a‘chattering’ phenomenon using waveforms of the DEG inverter’s current and the voltage on the energy consumer’s premises (i.e. a residential house), wherein the inverter that uses a mechanical relay for isolation from the grid.
  • the voltage on the consumer’s premises rises when the inverter connects the DEG device to the grid and exports current.
  • the rising voltage then triggers the OVLO relay causing the inverter to disconnect from the grid for the statutory disconnection time.
  • Such cycle repeats itself and results in relay ‘chattering’ that potentially shortens the life of the relay.
  • DEG distributed energy generation
  • a system for interacting with an electrical power distribution grid and the loads connected to it comprises a plurality of DEG devices and a plurality of EPUs.
  • Each of the DEG devices has a first OVLO relay.
  • the EPU is installed at a POU of the electrical power distribution grid.
  • Each EPU is associated with the one or more DEG devices and comprises an input connection and an output connection.
  • the input connector of the EPU connects to the electrical power distribution grid.
  • the output connector of the EPU connects to the one or more loads and the OVLO relay of the corresponding DEG device.
  • the EPU selectively disconnects or turns off the DEG device or the first OVLO relay when‘chattering’ phenomenon is detected.
  • the EPU further comprises a first current sensing unit coupled between the output connector of the EPU and the first OVLO relay.
  • the system further comprises a battery module and a second OVLO relay.
  • the second OVLO relay is coupled between the output connector of the EPU and the battery module.
  • the EPU is configured for selectively disconnecting the second OVLO relay when‘chattering’ phenomenon is detected.
  • the EPU further comprises a first current sensing unit coupled between the output connector of the EPU and the first OVLO relay.
  • the EPU further comprises a second current sensing unit coupled between the output connector of the EPU and the second OVLO relay.
  • the first and second current sensing unit may be a current transformer.
  • the EPU further comprises a communicating interface configured to communicate with the DEG device.
  • the EPU installed between the DEG device and the electrical power distribution grid protects and isolates the relay of the DEG device from customer mains wiring. As such, the chattering phenomenon can be depressed and eliminated.
  • FIG. 1 illustrates a chatter phenomenon using waveforms of the inverter’ s current and the voltage on an energy consumer’s premises;
  • FIG. 2 depicts a schematic diagram of an exemplary implementation of a system for DEG devices connected to an external electrical power distribution grid and corresponding loads in accordance with one embodiment of the present invention
  • FIG. 3 depicts a schematic diagram of an exemplary implementation of an EPU coupled between the DEG device and the electrical power distribution grid in accordance with one embodiment of the present invention
  • FIG. 4 depicts a schematic diagram of an exemplary implementation of the EPU in accordance with another embodiment of the present invention.
  • FIG. 5 depicts an illustration of the system for DEG devices connected to an external electrical power distribution grid and corresponding loads in accordance with one embodiment of the present invention
  • FIG. 6 depicts a more detailed illustration of the system for DEG devices as shown in FIG. 5;
  • FIG. 7 depicts an illustration of the cause of the‘chattering’ phenomenon.
  • FIG. 2 depicts a schematic diagram of an exemplary implementation of a system for DEG devices connected to an external electrical power distribution grid and corresponding loads in accordance with one embodiment of the present invention.
  • the system comprises a plurality of DEG devices 10, and a plurality of EPUs 12 installed at a POU of the electrical power distribution gird 14.
  • Each EPU 12 comprises an input connector and an output connector.
  • the input connector of the EPU 12 connects the electrical power distribution grid 14, and the output connector of the EPU 12 is connected to the corresponding load 16 and the DEG device 10.
  • each EPU 12 is connected to its corresponding DEG devices 10.
  • a person skilled in art should realize that a single EPU 12 is allowed to connect to more than one DEG devices.
  • the POU may be a single or a number of circuits connected between the PCC 18 of the local low voltage (LV) grid 20 and the energy consumer’s premises (e.g. a residential house).
  • the switchboard 22 of the house is coupled to the LV grid 20 through a customer mains wiring 24 (i.e., sub mains wiring), and the EPU 12 is electrically coupled between the switchboard 22 with an optional meter 26 and the loads 16 of the house.
  • the EPU 12 can be installed at each connection at the end of the POU, such as, but not limited to, the switchboard 22, electrical power connection service point, switch room, remotely at a single circuit connection to a single consumer premises, an adjacent location inside or outside of the energy consumer’s premises, or on an electric pole.
  • the loads 16 of the energy consumer’s premise may be a house wiring, electronic appliances or illuminants.
  • FIG. 3 depicts a schematic diagram of an exemplary implementation of an EPU connected between the DEG device and the electrical power distribution grid in accordance with one embodiment of the present invention.
  • the DEG device 10 comprises a power generation module 30, an inverter 32 and an overvoltage lockout (OVLO) relay 34.
  • the power generation module 30 may be a PV solar panel that converts energy from sunlight received into direct current (DC) electricity.
  • the inverter 32 then converts the DC electricity into an alternating current (AC) electricity.
  • the OVLO relay 34 is coupled between the inverter 32 and the output connector 122 of the EPU 12.
  • the OVLO relay 34 is configured to selectively turn ON and OFF for protecting the inverter 32 and allowing electrical energy to be exported onto the electrical power distribution grid.
  • the power generation module 30 cannot store the electrical energy it generates, the energy generated must either be dispersed to an energy storage system such as a battery or consumed by a load 16.
  • the DEG device 10 may further comprises an optional battery module 36.
  • the DEG device 10 is connected to the output connector 122 of the EPU 12 that allows the EPU 12 to provide a regulated voltage to the load 16 and/or charge the battery module 36.
  • the EPU 12 also exports any excess energy via its input connector 121 onto the electrical power distribution grid 14.
  • the OVLO relay 34 is no longer isolating the inverter 32 from the electrical power distribution grid 14, and as such the DEG device 10 sees and senses only the nominal output (i.e. regulated voltage) of the EPU 12 instead of the voltage at the POU end of the customer mains wiring, which could increases as energy generated from the DEG device 10 is exported onto the power distribution grid 14.
  • energy generated by the DEG device 10 is passed back through the bidirectional EPU 12 onto the electrical power distribution grid 14 without triggering the OVLO relay 34, and at the same time eliminates the‘chattering’ phenomenon at the OVLO relay 34 of the DEG device 10.
  • the EPU 12 In providing the regulated voltage and to ensure the power quality (e.g. commanding the DEG devices to turn off DEG energy export) in the electrical power distribution grid 14, the EPU 12 is configured to monitor monitored parameters including at least the input voltage and output voltage of the EPU 12, the POU current, DEG device 10 current, and export/import condition of the DEG device 10 current. From the monitored parameters, the EPU 12 determines the relevant parameters of the operating environment of the EPU 12 and the DEG device 10; these determined operational parameters include at least the voltage at the PCC 18, the customer mains wiring resistance from the switchboard 22 to the PCC 18, and compensation for the voltage increase or drop along the customer mains wiring from the EPU 12 to the PCC 18.
  • Various methods may be employed in the computation of the customer mains wiring resistance including, but not limited to, conditional statements, fuzzy logic, neural network, decision tree learning, or any machine learning as examples; alternatively, a method based on the Ohm’s law with two power quality data sets may be taken at the EPU 12 or the DEG device 10.
  • the Ohm’s law-based method comprises sensing and recording the change in the EPU 12 input voltage ( W » « 4 divided by the change in the EPU 12 current (/ sense ) sampled over a period of time, and calculating the customer mains wiring resistance (R w ) by:
  • the battery module 36 includes an OVLO relay 38 coupled between the EPU 12 and the battery module 36.
  • the battery module 36 sees only the nominal output of the EPU 12 instead of the voltage at the POU end of the mains wiring. This in turn depresses, if not eliminates entirely, the ‘chattering’ phenomenon at the OVLO relay 38 of the battery module 36.
  • FIG. 4 depicts a schematic diagram of an exemplary implementation of the EPU in accordance with another embodiment of the present invention.
  • the EPU 12 further comprises a first current sensing unit CS1 and a second current sensing unit CS2.
  • the first current sensing unit CS1 is coupled between the output connector 122 of the EPU 12 and OVLO relay 34 of the inverter 32.
  • the second current sensing unit CS2 is coupled between the output connector 122 of the EPU 12 and OVLO relay 38 of the battery module 36.
  • the first and the second current sensing units CS1 and CS2 respectively are configured for EPU 12 to sense the current of the corresponding OVLO 34, 36 respectively.
  • each of the first and the second current sensing units CS1 and CS2 respectively is a current transformer.
  • the EPU 12 monitors the current to and from the DEG device 10 and the current to and from the battery module 36 via the first and the second current sensing units CS1 and CS2 respectively for waveform pattern of repeated turning on and off of DEG energy export, which ensures that the‘chattering’ phenomenon does not occur. If OVLO relay 34, 36 of the DEG device does chatter, EPU 12 then is able to disconnect or turn off the DEG device 10 through a data communicating interface 40.
  • the EPU is configured to monitor and transmit information data on one or more monitored parameters including, but not limited to, the input voltage and output voltage of the EPU, the POU current, DEG device current, export/import condition of the DEG device current, frequency, temperature, and status of the EPU with respect to temperature, overvoltage protection (OVP), undervoltage protection (UVP), and bypass; in the case of a battery system, in addition, charged state, export/import condition of the battery current, and battery temperature.
  • OVP overvoltage protection
  • UVP undervoltage protection
  • FIG. 5 is used to further illustrate the working principle of the present invention.
  • FIG. 5 depicts a schematic illustration of an exemplary residential house with a customer mains wiring from the grid PCC to the house switchboard.
  • a series connected EPU is installed in this premises.
  • the output of the EPU is connected to the house wiring, generally through the switchboard and relevant breakers (not shown in the figure) and to the shunt DEG device.
  • the EPU comprises the following functional features:
  • the EPU tolerates wide ranges of AC input voltages and generate a tightly regulated output voltage delivered directly at the POU and the DEG devices with programmable OVP and UVP that either one activates the EPU bypass relay.
  • the EPU serves also as either a step down, a step up, or a full automatic voltage regulator (AVR) depending upon the application.
  • the EPU includes a high frequency series AC voltage regulator as disclosed in United States Patent No. 9,148,058, United States Patent No. 9,819,279, or United States Patent No. 9,979,312.
  • the EPU is configurable and controllable remotely via a data communication interface.
  • the EPU monitors one or more monitored parameters including, but not limited to, the input voltage and output voltage of the EPU, the POU current, DEG device current, export/import condition of the DEG device current, frequency, temperature, and status of the EPU with respect to temperature, OVP, UVP, and bypass; in the case of a battery system, in addition, charged state, export/import condition of the battery current, and battery temperature.
  • the EPU determines from the monitored parameters relevant parameters of the operating environment of the EPU and the DEG devices installed there within; these determined operational parameters include, but not limited to, voltage at the grid PCC, the customer mains wiring resistance from the POU main switchboard to the grid PCC, compensation for the voltage increase or drop along the customer mains wiring from the EPU to the grid PCC, derivations in the monitored parameters from the international grid tie statutory standards and DEG device specifications;
  • the EPU further comprises a data communication interface for sending to a remote computing device or server the monitored parameters and/or determined operational parameters; the data communication interface also allows SCADA control, configuration, and software/firmware updates to the EPU.
  • the EPU is further configured to report and/or generate alarms any malfunction of the DEG devices including, but not limited to, the detection of OVLO relay‘chattering’.
  • the EPU computes the grid PCC voltage based on the sensed voltage at the EPU installed at the POU main switchboard and the current flowing through it.
  • the EPU may command the DEG devices to reduce export current when the EPU recognized a local voltage rise in the computed grid PCC voltage. This is particularly important in maintaining the grid power quality, especially for local electrical power distribution areas (microgrids) that have high concentration of DEG device installations.
  • the EPU may further comprise a controllable disconnect relay, internal or external to the EPU, to totally disengage and isolate any DEG device and maintain the voltage quality or voltage limits of the grid at the PCC. Also, by controlling the amount of DEG energy export or completely disconnecting the DEG device, operating life of the OVLO disconnect electro-mechanical relay is prolonged.
  • the EPU is configured to sense and determine the polarity and the value of DEG current flowing in the current import or export direction.
  • the EPU can increase the voltage across its output to cause the DEG device in sensing a higher voltage. This may reduce the DEG device power generation and increase the system consumption through the inverse of conservative voltage reduction (CVR), thereby reducing the export current or increasing the import current to allow the usage of over-supplied renewable energy.
  • CVR conservative voltage reduction
  • the EPU is configured to detect electrical system malfunction and/or installation errors, particularly by computing the local impedance, the EPU can determine whether the local impedance is above the allowable limit and inform the installer or the utility company as such. This prevents both voltage drop in the case of DEG current import and voltage rise in the case of DEG current export, and in turn prevents power quality issues like flickering, appliance degradation, or any other nuisance.
  • the EPU can be used in testing DEG device statutory compliance. By deliberately allowing the EPU output voltage to rise under controlled conditions, the EPU can detect whether the DEG OVLO is functioning normally. For testing the proper functioning of DEG UVLO, the EPU reduces its output voltage under controlled conditions and that no load is consuming energy.
  • the EPU is configured to provide real-time power quality data and allow cloud-based, ad-hoc, or mesh-based grid management by balancing the energy demand and supply for an electrical network by utilizing the EPU functions as described above. Balanced energy management allows legacy standby energy sources to reduce operations and improve efficiency of the electrical power generation and distribution network.
  • portions or all functions and/or software/firmware provided and incorporated in the EPU are incorporated and implemented in the DEG device and/or any electrical power generation device that export electrical energy onto the grid or local grid (microgrid).
  • any DEG device or electrical power generation device that incorporates the same or similar portions or all features of the EPU as described herein falls within the scope of this invention.
  • the embodiments disclosed herein may be implemented using computing devices, computer processors, microcontrollers, or electronic circuitries including but not limited to digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), and other programmable logic devices configured or programmed according to the teachings of the present disclosure.
  • DSP digital signal processors
  • ASIC application specific integrated circuits
  • FPGA field programmable gate arrays
  • Computer instructions or software codes running in the computing devices, computer processors, or programmable logic devices can readily be prepared by practitioners skilled in the software or electronic art based on the teachings of the present disclosure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne un système qui élimine le phénomène de « cliquetis » du relais de blocage de surtension (OVLO) du dispositif de production d'énergie distribuée (DEG). Le système comprend au moins une unité de traitement d'énergie (EPU) installée dans un point d'utilisation (POU) du réseau de distribution d'énergie électrique. L'EPU est couplée entre le dispositif de DEG et le réseau de distribution d'énergie électrique, et a pour fonction de protéger et d'isoler le relais du dispositif de DEG du câblage de réseau électrique du client.
PCT/IB2019/053471 2018-04-28 2019-04-28 Système de distribution d'énergie électrique pour permettre une production d'énergie distribuée Ceased WO2019207555A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862664092P 2018-04-28 2018-04-28
US62/664,092 2018-04-28

Publications (2)

Publication Number Publication Date
WO2019207555A1 true WO2019207555A1 (fr) 2019-10-31
WO2019207555A4 WO2019207555A4 (fr) 2019-12-19

Family

ID=68294581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/053471 Ceased WO2019207555A1 (fr) 2018-04-28 2019-04-28 Système de distribution d'énergie électrique pour permettre une production d'énergie distribuée

Country Status (1)

Country Link
WO (1) WO2019207555A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO349457B1 (no) * 2025-05-29 2026-01-26 Ingenioer Dypvik As Et spenningsreguleringssystem for å levere jevn spenning

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160197476A1 (en) * 2014-10-10 2016-07-07 Edge Electrons Limited System and method for incorporating distributed energy generation in legacy electricity generation and distribution systems
US20170063087A1 (en) * 2014-10-10 2017-03-02 Edge Electrons Limited Maximizing energy savings by utilizing conservation voltage reduction with adaptive voltage control and peak demand reduction at point of use

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160197476A1 (en) * 2014-10-10 2016-07-07 Edge Electrons Limited System and method for incorporating distributed energy generation in legacy electricity generation and distribution systems
US20170063087A1 (en) * 2014-10-10 2017-03-02 Edge Electrons Limited Maximizing energy savings by utilizing conservation voltage reduction with adaptive voltage control and peak demand reduction at point of use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO349457B1 (no) * 2025-05-29 2026-01-26 Ingenioer Dypvik As Et spenningsreguleringssystem for å levere jevn spenning

Also Published As

Publication number Publication date
WO2019207555A4 (fr) 2019-12-19

Similar Documents

Publication Publication Date Title
AU2019101788A6 (en) Electrical Power Distribution System for Enabling Distributed Energy Generation
US8784130B2 (en) Supply side backfeed meter socket adapter
US9083173B2 (en) Power generation and control system
US11809209B2 (en) Systems and methods for electricity generation, storage, distribution, and dispatch
US20160197476A1 (en) System and method for incorporating distributed energy generation in legacy electricity generation and distribution systems
US20250273986A1 (en) Photovoltaic Disconnect Device For Storage Integration
US20170063087A1 (en) Maximizing energy savings by utilizing conservation voltage reduction with adaptive voltage control and peak demand reduction at point of use
Peiris et al. An adaptive protection scheme for small scale microgrids based on fault current level
US11139656B2 (en) Power supply arrangement
JP2020061850A (ja) 発電制御システム、発電制御方法及びプログラム
WO2018073719A1 (fr) Maximisation d'économies d'énergie par utilisation d'une réduction de tension de conservation à l'aide d'une commande de tension adaptative et d'une réduction de la demande de pointe au point d'utilisation
KR101429421B1 (ko) 태양광발전용 지능형 접속반 유니트
Kester et al. A smart MV/LV-station that improves power quality, reliability and substation load profile
AU2016380289B2 (en) System and method for incorporating distributed energy generation in legacy electricity generation and distribution systems
TWI805538B (zh) 智能優化電力監控關斷裝置、系統及其方法
Wojszczyk et al. High penetration of distributed generation and its impact on electric grid performance-utility perspective
KR102281206B1 (ko) 정전수용가의 전기공급 장치 및 그 방법
US10992168B2 (en) Apparatus of power distribution and method of power distribution
US20150244208A1 (en) Energy management apparatus and method of controlling the same
US11063432B2 (en) System and method for incorporating distributed energy generation in legacy electricity generation and distribution systems
Padmaja et al. Microcontroller-based Short-Circuit Protection for DC Bus Networks
Sabpayakom et al. Practical impact of VSPP in distribution networks: Intentional islanding operation
CN109861282A (zh) 基于信号耦合的反孤岛系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19792284

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19792284

Country of ref document: EP

Kind code of ref document: A1