WO2012128660A1 - PROCÉDÉ DE COMMANDE RAPIDE DE TRANSFERT DE PUISSANCE ACTIVE ET FRAGMENT D'UN SYSTÈME INTELLIGENT DE GESTION D'ÉNERGIE ÉLECTRIQUE POUR LE METTRE EN œUVRE - Google Patents

PROCÉDÉ DE COMMANDE RAPIDE DE TRANSFERT DE PUISSANCE ACTIVE ET FRAGMENT D'UN SYSTÈME INTELLIGENT DE GESTION D'ÉNERGIE ÉLECTRIQUE POUR LE METTRE EN œUVRE Download PDF

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Publication number
WO2012128660A1
WO2012128660A1 PCT/RU2011/000551 RU2011000551W WO2012128660A1 WO 2012128660 A1 WO2012128660 A1 WO 2012128660A1 RU 2011000551 W RU2011000551 W RU 2011000551W WO 2012128660 A1 WO2012128660 A1 WO 2012128660A1
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WO
WIPO (PCT)
Prior art keywords
active power
power
generating unit
line
power system
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/RU2011/000551
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English (en)
Russian (ru)
Inventor
Роман Николаевич БЕРДНИКОВ
Дмитрий Германович ТИМОФЕЕВ
Владимир Евгеньевич ФОРТОВ
Эдуард Евгеньевич СОН
Юрий Гевондович ШАКАРЯН
Николай Леонтьевич НОВИКОВ
Павел Вячеславович СОКУР
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.)
<<federal Grid Co Unified Energy Systems>> Joint-Stock Co (<<fgc Ues>> Jsc)
INSTITUTION OF RUSSIAN ACADEMY OF SCIENCES JOINT INSTITUTE FOR HIGH TEMPERATURES RAS (JIHT RAS)
Joint Stock Co <<research And Development Center For Power Engineering>> (jsc <<r&d Center For Power Engineering>>)
Original Assignee
<<federal Grid Co Unified Energy Systems>> Joint-Stock Co (<<fgc Ues>> Jsc)
INSTITUTION OF RUSSIAN ACADEMY OF SCIENCES JOINT INSTITUTE FOR HIGH TEMPERATURES RAS (JIHT RAS)
Joint Stock Co <<research And Development Center For Power Engineering>> (jsc <<r&d Center For Power Engineering>>)
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Filing date
Publication date
Priority claimed from RU2011110544/07A external-priority patent/RU2449446C1/ru
Application filed by <<federal Grid Co Unified Energy Systems>> Joint-Stock Co (<<fgc Ues>> Jsc), INSTITUTION OF RUSSIAN ACADEMY OF SCIENCES JOINT INSTITUTE FOR HIGH TEMPERATURES RAS (JIHT RAS), Joint Stock Co <<research And Development Center For Power Engineering>> (jsc <<r&d Center For Power Engineering>>) filed Critical <<federal Grid Co Unified Energy Systems>> Joint-Stock Co (<<fgc Ues>> Jsc)
Publication of WO2012128660A1 publication Critical patent/WO2012128660A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H02J3/04—Arrangements for connecting networks of the same frequency but supplied from different sources
    • H02J3/06—Controlling the transfer of power between connected networks; Controlling load sharing between connected networks
    • 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
    • H02J3/46—Controlling the sharing of generated power between the generators, sources or networks
    • 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
    • H02J3/46—Controlling the sharing of generated power between the generators, sources or networks
    • H02J3/48—Controlling the sharing of active power

Definitions

  • the invention relates to the electric power industry and can be applied in intelligent electric power systems with an active adaptive network (AES AES) for regulating active power.
  • AES AES active adaptive network
  • a known method of controlling active power in a power line according to which the phase angle between the voltage vectors at the end points of the power line by means of the controlled phase-shifting device included in it [RU2393608, IPC H02J3 / 06, G05F1 / 66, op. 2010].
  • Flow control represents the redistribution of consumed active power between the power line, in which the phase-shifting device is installed, on the one hand, and parallel power lines, on the other hand. The impact on the generated active power of the specified method does not provide.
  • the imbalance in the generated and consumed power that arises in the process of regulating the flow causes long-term (up to 30 sec.) Deviations of the electrical parameters (frequency and / or voltage), determined by the inertia of the generating units supplying the line. This reduces the quality of electricity and increases the risk of loss of stability of the electricity system.
  • the active power flow is controlled via the power line, changing the active power generated by the turbogenerator (by acting on the valve blocking the steam extraction pipe from the turbine).
  • the resulting power imbalance is compensated by an energy storage device connected to the tires of the turbogenerator. This allows you to reduce the deviation of the power parameters in the process of regulating the flow and, thereby, preserve the quality of electricity and reduce the risks of loss of stability.
  • the generator is a synchronous turbogenerator based on a condenser steam turbine
  • the sensor measures an electrical parameter (current, voltage, frequency or power)
  • the output of the control unit of the reversible converter is additionally connected to a valve that blocks the steam extraction pipe coming from the turbine to feed water heating.
  • the disadvantage of the prototype solution is the inertia of the active power control in the line and the limited control capabilities, since only short-term loading peaks, but not dips or load surges, can be compensated by the shutoff of the valve in the steam extraction pipeline. The presence of this drawback does not allow the effective use of the solution - a prototype for the operational control of the active power flow in the AAS.
  • the objective of the invention is to eliminate this drawback.
  • the technical result of the invention is the acceleration of the regulation of active power without reducing the quality of electricity and the stability margin of the power system, which, in turn, makes it possible to apply the invention in the AAS IES for fast remote control of the flow of active power and maintaining its balance in real time.
  • the subject of the invention is a method for controlling the flow of active power between parts of an intelligent electric power system connected by a transmission line, at least one of which contains a generating unit supporting a synchronous frequency, and is provided with an electric energy storage device, characterized in that they control the imbalance of active power on the shaft of the generating unit, change the flow of active power in the power line by adjusting the phase angle between the voltage vectors in its ok finite points by phase rotation device included in the line isolated limited time interval at which compensate the active power unbalance by converting electric energy storage device to charge or discharge mode with a deficiency or excess of active power accordingly, they restore the balance of active power by changing the generated power of the unit.
  • the subject of the present invention is also a device that implements the proposed method, which is a fragment of an intelligent electric power system, comprising at least one generating unit consisting of a turbine with a speed controller and an alternating current generator, to the tires of which an electric energy storage device is connected via connection chains a reversible static converter and at least one power line, while the turbine speed controller and the control unit
  • a rotary static converter is connected with inputs to the shaft rotation speed sensor of the generating unit
  • the reversible static converter control unit is configured to transfer the converter to inverter or rectifier mode for a given deviation of the rotational speed of the shaft of the generating unit from its synchronous value up or down, respectively, and is included in the power line phase-shifting device, the control input of which is designed to remotely affect active power.
  • the inventive method has development.
  • a deficiency or excess of active power is determined by measuring the deviation of the rotation speed of the shaft of the generating unit from the synchronous value up or down, respectively, and the specified time interval is isolated by comparing the measured deviation with the settings.
  • the settings for the deviation of the rotational speed of the shaft of the generating unit from the synchronous value are set within (0.1 - 1.0)% if the generating unit is made in the form of a synchronous or asynchronized turbogenerator, and within (5 - 10)% if the generating unit is designed as an asynchronized hydrogenerator.
  • the third development of the proposed method is that synchronously measure the stress vectors at the end points of the power line and limit the phase angle changes to the limits allowed by the stability condition.
  • the inventive device has a development according to which if the generating unit is made in the form of a synchronous or asynchronized turbogenerator, then the specified deviation of the shaft rotation speed from its synchronous value is ⁇ (0.1 - 1.0)%, and if in the form of an asynchronized hydro generator, then the specified the deviation is ⁇ (5 - 10)%.
  • connection circuits may contain power transformers and switching devices, and voltage vector sensors can be installed at the ends of the power line.
  • the turbine speed regulator and the control unit of the reversible static converter are equipped with additional inputs connected to the control input of the phase-shifting device, while the control unit of the reversible static converter is configured to transfer the converter to inverter or rectifier mode with positive or negative sign of remote exposure to active power. This further improves the speed and efficiency of the device.
  • Figure 1 presents a structural diagram of a device implementing the proposed method in the form of a fragment of an intelligent electric power system, taking into account the development of the invention.
  • Power line 1 connects buses 2 and 3 belonging to two parts of the electric power system.
  • Part of the electric power system with buses 2 contains a generating unit that maintains a synchronous frequency and consists of a turbine 4 and an alternator 5.
  • the controller 6 revolutions of the turbine 4 is connected by input 7 to the sensor 8 of the rotation speed of the shaft 9 of the generating unit.
  • An electric drive 10 with a reversible static converter 11 is connected to the buses 2.
  • the control unit 12 of the converter 11 is connected by an input 13 to the sensor 8.
  • a controlled phase-shifting device 14 is included in the transmission line 1, the control input 15 of which is designed to supply remote action ⁇ to the active power given to line 1. By acting on the control input 15, the angle ⁇ between the voltage vectors at the output and input of the device 14 can be changed.
  • connection circuit 16 which may contain power transformers and switching devices.
  • Block 12 is made with the possibility of transferring the converter 11 to the inverter or rectifier mode for a given deviation of the rotation speed of the shaft 9 from its synchronous value up or down, respectively, as well as with a positive or negative sign of the remote influence ⁇ . Additional inputs 17 and 18 of the controller 6 and block 12 are connected to the input 15.
  • PMU sensors 19 are installed that measure voltage vectors (phasors).
  • the device operates and implements the proposed method as follows.
  • the values of the alternating voltage vectors on the buses 2 and 3 of the power system are synchronously measured by the sensors 19.
  • the measurements are synchronized by the signals of the GPS and / or GLONASS satellite system.
  • Ui and U2 are the effective values of the voltages at the ends of the line (i.e., on tires 2 and tires 3, respectively), 612 is the phase angle of the shift between the vectors of these voltages, and X l is the inductive resistance of line 1.
  • the angle ⁇ 2 is the angle between the voltage vectors measured by sensors 19 and is monitored during flow control. In the absence of disturbances and control actions at the input 15, the turbine 4 under the control of its controller 6 rotates the shaft 9 at a constant speed. The synchronous value of this speed corresponds to obtaining a current of synchronous frequency at the output of the generator 5.
  • the control action ⁇ on the increase ( ⁇ with a positive sign) or decrease ( ⁇ with a negative sign) of the active power transmitted through transmission line 1 is received.
  • the device 14 accordingly increases or decreases the angle ⁇ .
  • the required value of the angle ⁇ ] 2 and its presence within the limits allowed by the stability condition is monitored using sensors 19, the readings of which are read by the AAS monitoring system.
  • Modern phase-shifting devices [see, for example, Stelmakov V.N. and other Phase-reversing devices with thyristor control. “Energetik” ⁇ ° 8, 2010] are characterized by high speed. Therefore, the active power taken from the generator 5 along line 1 increases (or decreases) significantly faster than the power of the turbine 4 controlled by the regulator 6. Temporarily arising power imbalance leads to a slowdown or acceleration of the turbine 4, accompanied by a deviation of its rotation speed ⁇ , measured sensor 8, from synchronous speed o) s .
  • the controller 6 changes the turbine power and restores the power balance, which ensures the synchronous speed of the shaft 9, for a time depending on the inertia of the turbine 4. At this interval, the required power quality and the necessary stability margin provide temporary compensation of unbalance with using drive 10.
  • the allocation of the compensation interval and the management of the drive 10 is as follows.
  • block 12 switches the converter 11 to inverter or rectifier mode until the rotation speed deviates to the other side by the value of the corresponding setpoint.
  • the drive 10 respectively transfers previously accumulated energy to the network or takes excess energy from the network, thereby compensating for the temporarily unbalanced power and the corresponding deviation of the rotation speed of the shaft 9 of the generating unit from the synchronous one.
  • the absolute value range in which it is advisable to set the speed deviation settings depends on the properties of the turbine 4 and generator 5. For cases where a synchronous or asynchronized generator with a steam, gas or gas turbine is used, and its inertia provides relatively small deviations of the rotation speed from synchronous during surges of consumed active power, this range can be (0.1 - 1.0)%, and for the case of using an asynchronized generator with a hydraulic turbine, having th less inertia, by setting deviation may be set in the range (5 - 10)%.
  • controller 6 When the action ⁇ is received, it simultaneously enters the input 17 of controller 6 and the input 18 of unit 12. With a positive sign of ⁇ , controller 6 increases the power of the turbine, and with a negative sign of ⁇ it decreases. At the same time, block 12 puts the converter 11 into inverter mode (drive 10 gives off power) or into rectifier mode (drive 10 charges and accumulates power), respectively. To eliminate theoretically possible uncertainties due to multidirectional effects on power and speed of rotation on the controller 6 and block 12, they can be performed with priority on one of the effects, for example, on the impact ⁇ received on the phase-shifting device. In the absence of this effect, the drive 10, as in the prototype, damps short-term oscillations of the active power in the line.
  • the sequence of basic operations according to the claimed method (the regulation process begins with changing the flow in the line, then temporarily compensating for the resulting power imbalance with the drive and, finally, restoring the balance by changing the generated power) is practically the opposite of the prototype’s sequence of operations, which begins with a change in power turbines (i.e., generated power) and ends with the establishment of the required flow in the line.
  • the effect of a similar direction entering the control input 15 of the phase-shifting device 14, increases the flow of active power in line 1.
  • the negative power imbalance that has arisen on the shaft 9 slows down the turbine 4 and reduces the speed of rotation of the shaft 9 controlled by the sensor 8 below synchronous.
  • the control unit 12 puts the drive 10 into the mode of generating additional power and generating energy.
  • the drive 10 damps the transition process and, giving up the accumulated energy, contributes to the rapid increase in flow in line 1.
  • the claimed method and device for its implementation using well-known operations and means, provide a new property: high-speed regulation of active power in the line without risks of reducing the quality of electricity and loss of stability of the electric power system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L'invention concerne le domaine des équipements électriques. Le résultat technique est une plus grande vitesse de réaction en termes de régulation de puissance active n'affectant pas la qualité de l'énergie électrique ni la réserve de stabilité d'un système énergétique. Le procédé consiste en ce que lors de la régulation du transfert de puissance active entre les différentes parties d'un système énergétique reliées par des lignes de transmission de courant (1), on commande le déséquilibre de puissance active sur l'arbre (11) de l'appareil de génération d'énergie, on modifie la transfert de puissance active sur la ligne (1) en régulant l'angle de phase entre les vecteurs de tension dans ces points terminaux sur les bus (2 et 3) au moyen d'un dispositif de rotation de phase (12) intégré à la ligne (1), on isole un intervalle de temps limité sur lequel le déséquilibre de la puissance active est compensé par le passage de l'accumulateur (7) d'énergie électrique en mode de décharge ou en mode de charge en cas de manque ou d'excès de puissance active, respectivement, et on rétablit l'équilibre de puissance entre par une modification correspondante de la puissance générée de l'appareil.
PCT/RU2011/000551 2011-03-21 2011-07-26 PROCÉDÉ DE COMMANDE RAPIDE DE TRANSFERT DE PUISSANCE ACTIVE ET FRAGMENT D'UN SYSTÈME INTELLIGENT DE GESTION D'ÉNERGIE ÉLECTRIQUE POUR LE METTRE EN œUVRE Ceased WO2012128660A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
RU2011110545 2011-03-21
RU2011110544 2011-03-21
RU2011110544/07A RU2449446C1 (ru) 2011-03-21 2011-03-21 Способ быстродействующего управления перетоком активной мощности
RU2011110545 2011-03-21
RU2011111140 2011-03-24
RU2011111140 2011-03-24

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WO2012128660A1 true WO2012128660A1 (fr) 2012-09-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116093970A (zh) * 2023-01-29 2023-05-09 南京理工大学 计及转速保护的双馈风机一次调频模型预测控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1735965A1 (ru) * 1989-11-09 1992-05-23 Кировский Политехнический Институт Способ автоматического регулировани активной мощности энергосистемы
RU2035107C1 (ru) * 1992-01-22 1995-05-10 Игорь Анатольевич Козурман Система электроснабжения
US5469044A (en) * 1995-01-05 1995-11-21 Westinghouse Electric Corporation Transmission line power flow controller with unequal advancement and retardation of transmission angle
RU2121746C1 (ru) * 1991-11-21 1998-11-10 Сименс АГ Паротурбинная электростанция, способ ее эксплуатации, объединенная энергосеть и способ ее эксплуатации

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1735965A1 (ru) * 1989-11-09 1992-05-23 Кировский Политехнический Институт Способ автоматического регулировани активной мощности энергосистемы
RU2121746C1 (ru) * 1991-11-21 1998-11-10 Сименс АГ Паротурбинная электростанция, способ ее эксплуатации, объединенная энергосеть и способ ее эксплуатации
RU2035107C1 (ru) * 1992-01-22 1995-05-10 Игорь Анатольевич Козурман Система электроснабжения
US5469044A (en) * 1995-01-05 1995-11-21 Westinghouse Electric Corporation Transmission line power flow controller with unequal advancement and retardation of transmission angle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116093970A (zh) * 2023-01-29 2023-05-09 南京理工大学 计及转速保护的双馈风机一次调频模型预测控制方法
CN116093970B (zh) * 2023-01-29 2023-12-05 南京理工大学 计及转速保护的双馈风机一次调频模型预测控制方法

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