KR20100034529A - 영상 전류를 제한하기 위한 방법 및 장치 - Google Patents
영상 전류를 제한하기 위한 방법 및 장치 Download PDFInfo
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- KR20100034529A KR20100034529A KR1020080093722A KR20080093722A KR20100034529A KR 20100034529 A KR20100034529 A KR 20100034529A KR 1020080093722 A KR1020080093722 A KR 1020080093722A KR 20080093722 A KR20080093722 A KR 20080093722A KR 20100034529 A KR20100034529 A KR 20100034529A
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- South Korea
- Prior art keywords
- winding
- tap
- phase
- reactor
- current
- Prior art date
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- 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
- H02H7/22—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 distribution gear, e.g. bus-bar systems; for switching devices
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- 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
- H02H3/08—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 excess current
- H02H3/081—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 excess current and depending on the direction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/32—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by star/delta switching
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims (13)
- 분산 전원이 연계된 중성선에서 발생되는 영상 전류를 제한하기 위한 장치로서,상기 중성선에 연결되어 1차 권선과 2차 권선의 권선비를 조절하는 탭 조절부, 및저항과 리액터로 이루어져 상기 권선 측과 연결되는 저항/리액터부를 포함하되,상기 저항과 리액터를 1차 권선과 2차 권선의 권수비로 조절하여 상기 중성선에 가해지는 임피던스가 조절되는 것을 특징으로 하는 장치.
- 제1항에 있어서,상기 1차 권선은 A 권선 부분과 B 권선 부분을 포함하고,상기 A 권선은 2차 권수비의 1배로 3탭을 인출하고, 상기 B 권선은 2차 권수비의 4배로 3탭을 인출하는 것을 특징으로 하는 장치.
- 제1항에 있어서,상기 2차 권선은 2차 A 권선 부분과 B 권선 부분을 포함하고,상기 2차 A 권선 부분과 2차 B 권선 부분은 반반씩 나우어 반대방향으로 분할해서 각각 상기 저항과 리액터에 대응하여 형성되는 것을 특징으로 하는 장치.
- 제1항에 있어서,상기 탭 조절부는, A 권선 부스바와 B 권선 부스바를 포함하고,상기 A 권선 부스바와 B 권선 부스바는 다수 개로 각각 교차하여 형성되는 것을 특징으로 하는 장치.
- 제4항에 있어서,상기 A 권선 부스바와 B 권선 부스바의 사이에는 절연판이 형성되는 것을 특징으로 하는 장치.
- 제5항에 있어서,상기 A 권선 부스바와 B 권선 부스바가 교차되는 지점은 16개의 탭 교차점으로 이루어지고, 상기 탭 교차점은 상기 절연판과 더불어 홀이 형성되는 것을 특징으로 하는 장치.
- 제6항에 있어서,상기 홀에는,탭 조절용 볼트가 삽입되어 상기 A 권선 부스바와 B 권선 부스바를 고정하는 것을 특징으로 하는 장치.
- 제7항에 있어서,상기 탭 조절용 볼트는,접촉 저항을 줄이고, 단단하게 고정하기 위해 와샤와 볼트 끝단에 상기 B 권선 부스바를 연결하도록 나사산으로 이루어지는 것을 특징으로 하는 장치.
- 제8항에 있어서,상기 B 권선 부스바는,상기 나사산에 대응하여 암나사의 형태를 갖는 것을 특징으로 하는 장치.
- 제1항에 있어서,상기 영상 전류 제한 장치는,상기 저항 및 리액터에서 발생되는 임피던스 값을 상기 탭 조절부의 탭 정정치 환산표에 의해 중성선의 임피던스로 환산하는 것을 특징으로 하는 장치.
- 분산 전원이 연계된 중성선에서 발생되는 영상 전류를 제한하기 위한 방법으로서,상기 중성선에 설치된 영상전류 제한 장치의 2차 저항과 리액터의 저항을 1차 권선과 2차 권선의 권수비로 조절하여 상기 중성선에 가해지는 임피던스가 조절되는 것을 특징으로 하는 방법.
- 제11항에 있어서,상기 중성선의 임피던스는,상기 2차 저항과 리액터의 임피던스를 탭 조절부의 탭 정정치 환산표에 의해 환산된 값인 것을 특징으로 하는 방법.
- 제12항에 있어서,상기 탭 정정치는, 0에서 15의 가중치를 갖는 것을 특징으로 하는 방법.
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KR1020080093722A KR100973549B1 (ko) | 2008-09-24 | 2008-09-24 | 영상 전류를 제한하기 위한 방법 및 장치 |
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KR1020080093722A KR100973549B1 (ko) | 2008-09-24 | 2008-09-24 | 영상 전류를 제한하기 위한 방법 및 장치 |
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KR20100034529A true KR20100034529A (ko) | 2010-04-01 |
KR100973549B1 KR100973549B1 (ko) | 2010-08-02 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112366746A (zh) * | 2020-10-22 | 2021-02-12 | 四川水利职业技术学院 | 一种防止已建成低压水轮发电机组中性线电流过大的方法 |
KR102335620B1 (ko) * | 2021-08-11 | 2021-12-06 | 한국에너지솔루션 주식회사 | 운전 중 발전용 변압기 중성점 접지 리액터 절체 장치 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102183596B1 (ko) | 2020-06-23 | 2020-11-26 | (주)한양케이앤이 | 태양광발전시스템 전로 통합형 중성점접지변성기용 직류전로 지락검출 장치 및 그 운용시스템 |
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JPS5140540A (en) * | 1974-10-03 | 1976-04-05 | Tadayasu Kobayashi | Sansodokikino denkishinaibukoshonitaisuru reisohogohoshiki |
NL1000914C2 (nl) * | 1995-08-01 | 1997-02-04 | Geb Zuid Holland West Nv | Werkwijze en inrichting voor continue instelling en regeling van een transformatoroverzetverhouding, alsmede transformator voorzien van een dergelijke inrichting. |
JPH09260167A (ja) * | 1996-03-22 | 1997-10-03 | Nissin Electric Co Ltd | コンデンサ形計器用変圧器 |
DE10130882A1 (de) * | 2001-06-27 | 2003-01-16 | Bayer Ag | Verfahren zur Herstellung von aliphatischen Oligocarbonatdiolen |
KR200430711Y1 (ko) | 2006-08-29 | 2006-11-13 | 한일월드(주) | 리액터식 변압기의 서지전압 방지회로 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112366746A (zh) * | 2020-10-22 | 2021-02-12 | 四川水利职业技术学院 | 一种防止已建成低压水轮发电机组中性线电流过大的方法 |
CN112366746B (zh) * | 2020-10-22 | 2023-07-21 | 四川水利职业技术学院 | 一种防止已建成低压水轮发电机组中性线电流过大的方法 |
KR102335620B1 (ko) * | 2021-08-11 | 2021-12-06 | 한국에너지솔루션 주식회사 | 운전 중 발전용 변압기 중성점 접지 리액터 절체 장치 |
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