JP2004153991A - 直流地絡検出装置、及びこの直流地絡検出装置を用いた系統連系発電装置 - Google Patents
直流地絡検出装置、及びこの直流地絡検出装置を用いた系統連系発電装置 Download PDFInfo
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- JP2004153991A JP2004153991A JP2003305875A JP2003305875A JP2004153991A JP 2004153991 A JP2004153991 A JP 2004153991A JP 2003305875 A JP2003305875 A JP 2003305875A JP 2003305875 A JP2003305875 A JP 2003305875A JP 2004153991 A JP2004153991 A JP 2004153991A
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- power
- temperature
- zero
- ground fault
- zct
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—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 parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the input circuit, e.g. transients in the DC input
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—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 parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
【解決手段】 複数の直流ライン39A、39Bを流れる直流電流の電流量の差を検出用コア44を介して計測して電流計測信号を出力する零相変流器(ZCT)41と、零相変流器(ZCT)41近傍の温度を計測し、温度計測信号を出力する温度センサ50と、計測信号に対応する電流量の差を温度計測信号に対応する温度で温度補正し、温度補正後の電流量の差に基づいて測定対象導線に生じた直流地絡を検出するMPU53を備える。
【選択図】 図2
Description
って、商用電源系統13の交流電力と略一致した交流電力が、系統連系発電装置10から
商用電源系統13へ供給される。
I1 <Iref
すなわち、
V1 <Vref
となり、直流地絡が発生しているにもかかわらず、マイクロコンピュータ17のMPU53は、直流地絡を検出できないこととなる。
I1 >Iref
すなわち、
V1 >Vref
となり、マイクロコンピュータ17のMPU53は、直流地絡を検出できることとなるが、電流差ΔIがI02〜I0の範囲でも検出用コア44の出力電流I1 は、Iref以上となり、当該電流差ΔIの範囲では、直流地絡が発生してもいないのにマイクロコンピュータ17のMPU53は、直流地絡を検出してしまうこととなる。
11 太陽電池(発電手段)
12 系統連系装置
13 商用電源系統
14 昇圧回路
15 インバータ回路
17 マイクロコンピュータ(制御装置)
39 直流ライン(測定対象導線)
40 直流地絡検出装置
41 零相変流器(ZCT)
44 検出用コア
50 温度センサ
51 入出力インターフェース部
52 発振・分周回路
53 MPU(温度補正部、直流地絡検出部)
54 ROM
55 RAM
Claims (3)
- 一対の直流電力線が貫通し前記直流電力線を流れる電流の電流差を出力する零相変流器(ZCT)を有し、前記電流差と予め定めた基準値とに基づいて前記直流電流線の地絡を判断する直流地絡検出装置において、前記零相変流器(ZCT)の温度又はこの零相変流器の近傍の雰囲気温度を検出する温度センサ、及び前記零相変流器(ZCT)の出力する電流差又は前記基準値を前記温度センサの検出温度に基づいて補正する温度補正部とを備えたことを特徴とする直流地絡検出装置。
- 発電ユニットから供給される直流電力を昇圧する昇圧回路と、前記昇圧回路にて昇圧された直流電力を所定の周波数に制御された交流電力に変換するインバータ回路と、前記交流電力を商用電源系統へ回生すべく、前記昇圧回路及び前記周波数を制御する制御装置とを有し、前記発電ユニットから前記直流電力が供給される直流電力線の地絡を検出する地絡検出装置とを有する系統連系発電装置であって、前記直流地絡検出装置は、一対の直流電力線が貫通し前記直流電力線を流れる電流の電流差を出力する零相変流器(ZCT)を有し、前記電流差と予め定めた基準値とに基づいて前記直流電流線の地絡を判断すると共に、前記零相変流器(ZCT)の温度又はこの零相変流器の近傍の雰囲気温度を検出する温度センサ、及び前記零相変流器(ZCT)の出力する電流差又は前記基準値を前記温度センサの検出温度に基づいて補正する温度補正部とを備えたことを特徴とする系統連系発電装置。
- 請求項2に記載の系統連系発電装置において、前記発電ユニットは、太陽光を受光して前記直流電力を発電する太陽電池であることを特徴とする系統連系発電装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003305875A JP2004153991A (ja) | 2002-10-10 | 2003-08-29 | 直流地絡検出装置、及びこの直流地絡検出装置を用いた系統連系発電装置 |
KR1020030067480A KR100548086B1 (ko) | 2002-10-10 | 2003-09-29 | 직류 지락 검출 장치 및 이 직류 지락 검출 장치를 이용한계통 연계 발전 장치 |
CNB031248829A CN1241028C (zh) | 2002-10-10 | 2003-09-29 | 直流接地检测装置和使用它的系统连接发电装置 |
TW092126819A TWI227957B (en) | 2002-10-10 | 2003-09-29 | Means for detecting DC ground fault, and system-link electricity generation device using the detecting means of DC ground fault |
EP03022214.5A EP1408594B1 (en) | 2002-10-10 | 2003-09-30 | DC ground fault detector and system-interconnected generation device using the DC ground fault detector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002297190 | 2002-10-10 | ||
JP2003305875A JP2004153991A (ja) | 2002-10-10 | 2003-08-29 | 直流地絡検出装置、及びこの直流地絡検出装置を用いた系統連系発電装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2004153991A true JP2004153991A (ja) | 2004-05-27 |
Family
ID=32032954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003305875A Pending JP2004153991A (ja) | 2002-10-10 | 2003-08-29 | 直流地絡検出装置、及びこの直流地絡検出装置を用いた系統連系発電装置 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1408594B1 (ja) |
JP (1) | JP2004153991A (ja) |
KR (1) | KR100548086B1 (ja) |
CN (1) | CN1241028C (ja) |
TW (1) | TWI227957B (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7696743B2 (en) | 2006-08-31 | 2010-04-13 | Mitsubishi Electric Corporation | Zero-phase current detecting apparatus |
WO2010150601A1 (ja) | 2009-06-22 | 2010-12-29 | 新日本石油株式会社 | 絶縁抵抗測定装置及び絶縁抵抗測定方法 |
JP2013116017A (ja) * | 2011-11-30 | 2013-06-10 | Toshiba Corp | 車両用駆動制御装置 |
CN105182220A (zh) * | 2015-09-15 | 2015-12-23 | 安徽佑赛科技有限公司 | 三相全桥逆变器功率电路的测试系统及其方法 |
JP6319929B1 (ja) * | 2017-03-24 | 2018-05-09 | 竹内マネージメント株式会社 | 直流地絡検出装置、太陽光発電システム、及びプログラム |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100618569B1 (ko) * | 2004-10-21 | 2006-08-31 | 엘에스산전 주식회사 | 온도 보정 기능을 가진 전자식 전력 계측 장치 및 방법 |
DE102005043883A1 (de) * | 2005-09-14 | 2007-03-22 | Siemens Ag Österreich | Vorrichtung und Verfahren zur dezentralen Energieversorgung |
DE102006016502A1 (de) * | 2006-04-07 | 2007-10-18 | Siemens Ag | Wechselrichter |
CN101359029B (zh) * | 2008-09-23 | 2010-06-02 | 东北电力大学 | 单总线直流接地故障在线自动监测装置 |
TWI420772B (zh) * | 2010-04-06 | 2013-12-21 | Szu Lin Liu | 風力發電之輸出功率調節電路 |
JP5802076B2 (ja) * | 2011-08-01 | 2015-10-28 | Jx日鉱日石エネルギー株式会社 | 地絡検出装置、地絡検出方法、太陽光発電システム、及び地絡検出プログラム |
DE102013104629A1 (de) * | 2013-05-06 | 2014-11-06 | Refusol Gmbh | Energieerzeugungseinrichtung mit funktionssicherer Potentialtrennung |
GB2519342A (en) * | 2013-10-18 | 2015-04-22 | Heber Ltd | Detection of circuit integrity |
CN106772191A (zh) * | 2016-11-28 | 2017-05-31 | 株洲中车时代电气股份有限公司 | 一种提高变流器控制精度的方法、装置及变流器 |
CN107402340B (zh) * | 2017-07-28 | 2020-01-10 | 南京南瑞继保电气有限公司 | 一种基于能量模型的小电流接地系统单相接地故障判别方法 |
CN107478929A (zh) * | 2017-08-03 | 2017-12-15 | 国网四川省电力公司电力科学研究院 | 一种移动式多功能接地装置测试系统 |
CN110032236B (zh) * | 2019-04-30 | 2024-01-23 | 成都新欣神风电子科技有限公司 | 一种任意偏置电压输出的直流传感器电路 |
EP3893346A1 (en) | 2020-04-09 | 2021-10-13 | HS Elektronik Systeme GmbH | Electric safety circuit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01113674A (ja) * | 1987-10-28 | 1989-05-02 | Asahi Chem Ind Co Ltd | 電流検出器 |
JPH11122819A (ja) * | 1997-10-20 | 1999-04-30 | Fuji Electric Co Ltd | 直流地絡検出装置 |
JP2002233045A (ja) * | 2001-02-02 | 2002-08-16 | Canon Inc | 太陽光発電システムの地絡検出のための装置及び方法 |
JP2003262655A (ja) * | 2002-03-08 | 2003-09-19 | Fuji Electric Co Ltd | 直流漏電検出装置 |
-
2003
- 2003-08-29 JP JP2003305875A patent/JP2004153991A/ja active Pending
- 2003-09-29 CN CNB031248829A patent/CN1241028C/zh not_active Expired - Lifetime
- 2003-09-29 KR KR1020030067480A patent/KR100548086B1/ko not_active IP Right Cessation
- 2003-09-29 TW TW092126819A patent/TWI227957B/zh not_active IP Right Cessation
- 2003-09-30 EP EP03022214.5A patent/EP1408594B1/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7696743B2 (en) | 2006-08-31 | 2010-04-13 | Mitsubishi Electric Corporation | Zero-phase current detecting apparatus |
WO2010150601A1 (ja) | 2009-06-22 | 2010-12-29 | 新日本石油株式会社 | 絶縁抵抗測定装置及び絶縁抵抗測定方法 |
US8860430B2 (en) | 2009-06-22 | 2014-10-14 | Jx Nippon Oil & Energy Corporation | Insulation resistance measurement device and insulation resistance measurement method |
JP2013116017A (ja) * | 2011-11-30 | 2013-06-10 | Toshiba Corp | 車両用駆動制御装置 |
CN105182220A (zh) * | 2015-09-15 | 2015-12-23 | 安徽佑赛科技有限公司 | 三相全桥逆变器功率电路的测试系统及其方法 |
JP6319929B1 (ja) * | 2017-03-24 | 2018-05-09 | 竹内マネージメント株式会社 | 直流地絡検出装置、太陽光発電システム、及びプログラム |
JP2018164340A (ja) * | 2017-03-24 | 2018-10-18 | 竹内マネージメント株式会社 | 直流地絡検出装置、太陽光発電システム、及びプログラム |
Also Published As
Publication number | Publication date |
---|---|
TW200409432A (en) | 2004-06-01 |
EP1408594B1 (en) | 2013-05-08 |
TWI227957B (en) | 2005-02-11 |
CN1241028C (zh) | 2006-02-08 |
CN1497259A (zh) | 2004-05-19 |
KR100548086B1 (ko) | 2006-02-02 |
EP1408594A3 (en) | 2006-09-20 |
KR20040032750A (ko) | 2004-04-17 |
EP1408594A2 (en) | 2004-04-14 |
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