WO2012122131A3 - Measurement of insulation resistance of configurable photovoltaic panels in a photovoltaic array - Google Patents

Measurement of insulation resistance of configurable photovoltaic panels in a photovoltaic array Download PDF

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Publication number
WO2012122131A3
WO2012122131A3 PCT/US2012/027785 US2012027785W WO2012122131A3 WO 2012122131 A3 WO2012122131 A3 WO 2012122131A3 US 2012027785 W US2012027785 W US 2012027785W WO 2012122131 A3 WO2012122131 A3 WO 2012122131A3
Authority
WO
WIPO (PCT)
Prior art keywords
insulation resistance
panels
array
measurement
photovoltaic
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/US2012/027785
Other languages
French (fr)
Other versions
WO2012122131A2 (en
Inventor
Toru Takehara
Shinichi Takada
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.)
Paceco Corp
Original Assignee
Paceco Corp
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 Paceco Corp filed Critical Paceco Corp
Priority to EP12755268.5A priority Critical patent/EP2681571A2/en
Priority to JP2013557790A priority patent/JP2014508939A/en
Publication of WO2012122131A2 publication Critical patent/WO2012122131A2/en
Publication of WO2012122131A3 publication Critical patent/WO2012122131A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • G01R27/18—Measuring resistance to earth, i.e. line to ground
    • 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

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Methods for measuring insulation resistance in a photovoltaic (PV) array may include partitioning the PV array into groups of PV panels, isolating a group of PV panels selected for an insulation resistance measurement from other groups of panels by setting bypass selectors on each PV panel in the PV array, and making an insulation resistance measurement for the selected group. If a measured value of insulation resistance for a selected group corresponds to an insulation problem in a PV array component, a separate measurement of insulation resistance may be made for each PV panel in the selected group. Insulation resistance measurements may be made accurately and rapidly for large PV arrays without disconnecting and reconnecting cables between panels. Measurements may be made at frequent, regular intervals to permit changes in insulation resistance to be detected before damage from dielectric breakdown occurs.
PCT/US2012/027785 2011-03-04 2012-03-05 Measurement of insulation resistance of configurable photovoltaic panels in a photovoltaic array Ceased WO2012122131A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12755268.5A EP2681571A2 (en) 2011-03-04 2012-03-05 Measurement of insulation resistance of configurable photovoltaic panels in a photovoltaic array
JP2013557790A JP2014508939A (en) 2011-03-04 2012-03-05 Measurement of insulation resistance of solar cell array variable solar panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161449480P 2011-03-04 2011-03-04
US61/449,480 2011-03-04

Publications (2)

Publication Number Publication Date
WO2012122131A2 WO2012122131A2 (en) 2012-09-13
WO2012122131A3 true WO2012122131A3 (en) 2012-11-01

Family

ID=46752936

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/027785 Ceased WO2012122131A2 (en) 2011-03-04 2012-03-05 Measurement of insulation resistance of configurable photovoltaic panels in a photovoltaic array

Country Status (4)

Country Link
US (1) US8773156B2 (en)
EP (1) EP2681571A2 (en)
JP (1) JP2014508939A (en)
WO (1) WO2012122131A2 (en)

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US12490523B2 (en) 2017-06-12 2025-12-02 The Boeing Company Solar cell array with changeable string length

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JP7656393B2 (en) * 2017-06-12 2025-04-03 ザ・ボーイング・カンパニー Solar cell array with variable string length - Patents.com
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WO2019021449A1 (en) * 2017-07-28 2019-01-31 東芝三菱電機産業システム株式会社 Solar power system and grounding method therefor
CN107643448A (en) * 2017-10-26 2018-01-30 北京广利核系统工程有限公司 Megger test detection means and detection method
JP6930370B2 (en) * 2017-10-30 2021-09-01 オムロン株式会社 Ground fault detector
US11456697B2 (en) * 2017-11-24 2022-09-27 Delta Electronics India Private Limited Solar pumping system and a method for operating solar pumping system
KR102259382B1 (en) 2017-12-15 2021-06-01 주식회사 엘지에너지솔루션 Method and apparatus for detecting a battery leakage
FR3079305B1 (en) 2018-03-23 2020-05-01 IFP Energies Nouvelles METHOD FOR DETERMINING AT LEAST TWO EQUIVALENT INSULATION RESISTORS OF AN ELECTRICAL SYSTEM
CN110389289B (en) * 2018-04-18 2021-06-11 宁德时代新能源科技股份有限公司 Insulation fault detection method and control device
US11387778B2 (en) 2018-10-17 2022-07-12 Solaredge Technologies Ltd. Photovoltaic system failure and alerting
CN111624451B (en) 2019-02-28 2021-06-08 宁德时代新能源科技股份有限公司 Energy storage system and insulation detection method thereof
CN110531210B (en) * 2019-09-24 2024-08-23 成都凯迪飞研科技有限责任公司 Aviation harness conduction and insulation intelligent detection system
CN113406394B (en) * 2020-03-17 2024-03-29 上海汽车集团股份有限公司 Insulation resistance measurement methods, circuits, power batteries, systems and electric vehicles
CN111398686B (en) * 2020-04-09 2022-04-12 国网山东省电力公司肥城市供电公司 Grounding resistance measuring system
KR102673263B1 (en) 2020-09-22 2024-06-10 주식회사 엘지에너지솔루션 Apparatus and method for calculating resistor
CN112540225B (en) * 2020-11-06 2024-08-02 广西电网有限责任公司南宁供电局 Testing device for secondary circuit insulation resistance
CN117063364A (en) * 2021-03-26 2023-11-14 华为数字能源技术有限公司 A method for detecting insulation resistance of power supply equipment and input terminals of power supply equipment
CN114184907B (en) * 2021-11-08 2022-08-05 西南交通大学 A method for evaluating the aging degree of rail transit cables
KR102811100B1 (en) * 2022-04-18 2025-05-21 한화솔루션 주식회사 Insulation condition check device of photovoltaic cell module
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Also Published As

Publication number Publication date
US20120223734A1 (en) 2012-09-06
EP2681571A2 (en) 2014-01-08
JP2014508939A (en) 2014-04-10
US8773156B2 (en) 2014-07-08
WO2012122131A2 (en) 2012-09-13

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