CN106532648B - 一种两台互为备用变频电动机的差动保护装置与方法 - Google Patents
一种两台互为备用变频电动机的差动保护装置与方法 Download PDFInfo
- Publication number
- CN106532648B CN106532648B CN201611033280.1A CN201611033280A CN106532648B CN 106532648 B CN106532648 B CN 106532648B CN 201611033280 A CN201611033280 A CN 201611033280A CN 106532648 B CN106532648 B CN 106532648B
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- Prior art keywords
- frequency
- differential protection
- frequency converter
- adjustable
- switch
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Classifications
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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
- H02H7/08—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 dynamo-electric motors
- H02H7/0833—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 dynamo-electric motors for electric motors with control arrangements
- H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error
-
- 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
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
- H02P5/50—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing electrical values representing the speeds
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201611033280.1A CN106532648B (zh) | 2016-11-15 | 2016-11-15 | 一种两台互为备用变频电动机的差动保护装置与方法 |
Applications Claiming Priority (1)
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CN201611033280.1A CN106532648B (zh) | 2016-11-15 | 2016-11-15 | 一种两台互为备用变频电动机的差动保护装置与方法 |
Publications (2)
Publication Number | Publication Date |
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CN106532648A CN106532648A (zh) | 2017-03-22 |
CN106532648B true CN106532648B (zh) | 2019-07-02 |
Family
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Family Applications (1)
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CN201611033280.1A Active CN106532648B (zh) | 2016-11-15 | 2016-11-15 | 一种两台互为备用变频电动机的差动保护装置与方法 |
Country Status (1)
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CN (1) | CN106532648B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109742845B (zh) * | 2018-12-28 | 2022-08-09 | 江苏金智科技股份有限公司 | 一种基于最优相的电源快切装置快速合闸方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101976820A (zh) * | 2010-08-31 | 2011-02-16 | 南京南瑞继保电气有限公司 | 变频电动机保护采样信号处理方法 |
CN102013665A (zh) * | 2010-12-01 | 2011-04-13 | 江苏金智科技股份有限公司 | 一种高压变频器拖动电动机方式下电动机差动保护方法 |
CN104993457A (zh) * | 2015-07-21 | 2015-10-21 | 大唐三门峡发电有限责任公司 | 火电发电厂高压变频电机保护系统 |
CN206524617U (zh) * | 2016-11-15 | 2017-09-26 | 国家电投集团河南电力有限公司技术信息中心 | 一种两台互为备用变频电动机的差动保护装置 |
-
2016
- 2016-11-15 CN CN201611033280.1A patent/CN106532648B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101976820A (zh) * | 2010-08-31 | 2011-02-16 | 南京南瑞继保电气有限公司 | 变频电动机保护采样信号处理方法 |
CN102013665A (zh) * | 2010-12-01 | 2011-04-13 | 江苏金智科技股份有限公司 | 一种高压变频器拖动电动机方式下电动机差动保护方法 |
CN104993457A (zh) * | 2015-07-21 | 2015-10-21 | 大唐三门峡发电有限责任公司 | 火电发电厂高压变频电机保护系统 |
CN206524617U (zh) * | 2016-11-15 | 2017-09-26 | 国家电投集团河南电力有限公司技术信息中心 | 一种两台互为备用变频电动机的差动保护装置 |
Non-Patent Citations (2)
Title |
---|
大容量高压电动机变频器继电保护对策探讨;唐红键等;《电力建设》;20100531;第31卷(第5期);第81-85页 |
高压变频器电动机保护配置;丁宁等;《电子科技》;20110831;第24卷(第8期);第114-115页以及第118页 |
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CN106532648A (zh) | 2017-03-22 |
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TR01 | Transfer of patent right |
Effective date of registration: 20200514 Address after: No. 10, Huanghe East Road, Zhengdong New District, Zhengzhou City, Henan Province Co-patentee after: TECHNOLOGY INFORMATION CENTER OF STATE POWER INVESTMENT CORPORATION HENAN POWER Co.,Ltd. Patentee after: State Power Investment Group Henan Electric Power Co., Ltd Co-patentee after: KAIFENG POWER GENERATION BRANCH OF HENAN ELECTRIC POWER CO., LTD., STATE POWER INVESTMENT Corp. Co-patentee after: WISCOM SYSTEM Co.,Ltd. Address before: 450000, 100, Phoenix Street, hi tech Zone, Henan, Zhengzhou Co-patentee before: KAIFENG POWER GENERATION BRANCH OF HENAN ELECTRIC POWER CO., LTD., STATE POWER INVESTMENT Corp. Patentee before: TECHNOLOGY INFORMATION CENTER OF STATE POWER INVESTMENT CORPORATION HENAN POWER Co.,Ltd. Co-patentee before: WISCOM SYSTEM Co.,Ltd. |
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TR01 | Transfer of patent right |