CN106329706B - Factory power supply fast switching device with intelligent circuit breaker opening and closing time correcting function - Google Patents
Factory power supply fast switching device with intelligent circuit breaker opening and closing time correcting function Download PDFInfo
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- CN106329706B CN106329706B CN201610888889.0A CN201610888889A CN106329706B CN 106329706 B CN106329706 B CN 106329706B CN 201610888889 A CN201610888889 A CN 201610888889A CN 106329706 B CN106329706 B CN 106329706B
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- switching
- power supply
- time
- switching device
- breaker
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Keying Circuit Devices (AREA)
Abstract
A rapid switching device of a service power supply for providing an intelligent correction function for the opening and closing time of a circuit breaker comprises a rapid switching device of the service power supply; the service power supply rapid switching device monitors the switching-on/off command signal of the incoming line circuit breaker; the station service power supply rapid switching device is connected to the position auxiliary contact of the incoming line circuit breaker; the station power supply fast switching device can monitor whether the switching-off time and the switching-on time of the incoming line breaker are within a reasonable range, and can send out an alarm signal if the time exceeds the range; the station power supply fast switching device can automatically count the switching-off time and the switching-on time of the incoming line breaker, and corrects the preset values of the switching-off time and the switching-on time of the breaker through an intelligent algorithm. The rapid switching device for the factory power supply can intelligently correct the switching-on and switching-off time of the circuit breaker, thereby improving the success rate of power supply switching, reducing the impact current of switching-on and prolonging the service life of primary equipment.
Description
Technical Field
The invention belongs to the technical field of safety automation of electric power systems, realizes intelligent monitoring of a circuit breaker loop and automatic correction of switching-on and switching-off time, and improves the success rate of fast switching of a service power supply.
Background
In power plants and industrial enterprises, in order to solve the problem of power supply reliability, a plant power supply rapid switching device is generally used, and is rapidly switched to a standby power supply for power supply when a working power supply fails, so as to ensure the power supply continuity of equipment.
In the factory power supply fast switching logic, no matter the fast switching mode or the simultaneous capture switching mode, the fast switching mode or the simultaneous capture switching mode needs to be matched with the accurate inherent opening and closing time of the incoming line circuit breaker, the opening and closing time of the circuit breaker is generally set in a device as a fixed value, and the time is provided by a circuit breaker manufacturer. However, in actual operation, the opening and closing time of the circuit breaker is not constant, and along with the increase of the operation time of the circuit breaker, the opening and closing speed of the circuit breaker is reduced due to some problems such as aging of an energy storage spring, sealing performance of a pneumatic mechanism, pipeline blockage of a hydraulic mechanism and the like, so that the success rate of power supply switching is seriously influenced; even the primary equipment is damaged due to overlarge switching-on impact current caused by inaccurate switching-on time point.
Disclosure of Invention
The invention aims to solve the problems, and provides a factory power supply fast switching device with an intelligent correction function for the opening and closing time of a circuit breaker, which solves the problems of power supply switching failure or overlarge switching impact current caused by the reduction of the opening and closing speed of the circuit breaker.
The switching-on and switching-off operation time of the circuit breaker is monitored in real time in the operation process of the equipment, and the time is dynamically corrected within a reasonable range, so that the success rate of power supply switching is improved, the switching-on impact current is reduced, and the service life of primary equipment is prolonged.
The technical scheme adopted by the invention is as follows: a rapid switching device of a service power supply for providing an intelligent correction function for the opening and closing time of a circuit breaker comprises a rapid switching device of the service power supply; the service power supply rapid device monitors the opening and closing signals of the incoming line circuit breakers; the station power supply quick device is connected to the position signal auxiliary contact of each incoming line breaker.
The rapid switching device of the station power supply can monitor the switching-on and switching-off operation signal of the circuit breaker and the deflection time of the auxiliary contact of the position signal of the circuit breaker in real time in the running process of the equipment;
the rapid switching device of the service power supply can calculate accurate switching-on and switching-off time according to the input switching-on and switching-off signal and the position auxiliary contact signal;
the rapid switching device of the station power supply can judge whether the opening and closing time of the circuit breaker exceeds a reasonable range, and if the opening and closing time of the circuit breaker exceeds the reasonable range, an alarm signal is sent out to inform operators to overhaul the circuit breaker;
the factory power supply fast switching device can automatically record the numerical value of the actual opening and closing time of the circuit breaker every time, and automatically correct the preset value in the device by utilizing the numerical values, so that the power supply switching success rate is improved, and the impact current of closing is reduced.
The invention has the beneficial effects that:
1. the opening and closing performance of the circuit breaker is monitored in real time, and the reliability of the circuit breaker is improved;
2. the success rate of rapid switching is improved by matching with more accurate opening and closing time of the circuit breaker, so that the continuity of the service power supply is further ensured;
3. by matching with more accurate opening and closing time of the circuit breaker, the closing time point of the standby power supply can be more accurately controlled, and the closing impact current is reduced;
lower switching-on impact current plays a certain protective action to primary equipment, improves the service life of the primary equipment.
Drawings
Fig. 1 is an electrical schematic and wiring schematic of the present invention.
In the figure:
0-station power supply fast switching device
1-working power supply incoming line breaker 1DL
2-standby power supply incoming line breaker 2DL
3-bus for factory (Single bus connection mode)
4-working power supply inlet wire
5-Standby power supply inlet wire
6-1 DL opening command signal
7-1 DL switching-on command signal
8-1 DL jump auxiliary contact
9-1 DL on-position auxiliary contact
10-2 DL opening command signal
11-2 DL switching-on command signal
12-2 DL jump auxiliary contact
13-2 DL on-position auxiliary contact
Detailed Description
The invention is further described below with reference to the accompanying drawings. Fig. 1 is an electrical schematic and wiring schematic of the present invention.
The service bus 3 is a working section bus corresponding to the service power supply fast switching device 0, and the working power supply incoming line 4 and the standby power supply incoming line 5 supply power to the service bus 3 in a mutually standby mode; 1DL 1 is a breaker of a working power supply inlet wire 4, and 2DL 2 is a breaker of a standby power supply inlet wire 5;
the station-used rapid power switching device 0 monitors the states of the opening command signal, the closing command signal, the jumping auxiliary contact and the closing auxiliary contact of the 1DL 1 and the 2DL 2 in real time during running, and when the circuit breakers 1DL 1 and 2DL 2 send opening and closing switching, the actual opening time and the actual closing time of the circuit breakers are calculated according to the state changes of the signals;
if the actual switching-off time and the actual switching-on time of the 1DL 1 and 2DL 2 circuit breakers measured by the plant-used power supply fast switching device 0 exceed reasonable ranges, for example, the actual switching-off time exceeds the inherent switching-off time +/-time threshold value provided by a circuit breaker manufacturer or the actual switching-on time exceeds the inherent switching-on time +/-time threshold value provided by the circuit breaker manufacturer, an alarm signal is sent out to inform an operator to overhaul the circuit breakers; the time threshold value can be used as a fixed value setting in a factory power supply quick switching device, the setting range is 5-100 ms, and the default value is 20 ms.
If the actual opening time and the actual closing time of the 1DL 1 and 2DL 2 circuit breakers measured by the plant power supply fast switching device 0 are within a reasonable range, the results of the recent multiple opening and closing times are integrated, and the fixed values of the 1DL opening time, the 1DL closing time, the 2DL opening time and the 2DL closing time which are set in the plant power supply fast switching device are corrected by using an intelligent correction algorithm so as to be used by the plant power supply fast switching device 0 when power supply switching is required (including accident switching and manual switching).
The rapid switching device for the factory power supply can intelligently correct the switching-on and switching-off time of the circuit breaker, so that the success rate of power supply switching is improved, the switching-on impact current is reduced, and the service life of primary equipment is prolonged.
The intelligent circuit breaker opening and closing time correction algorithm of the plant power supply quick switching device is that the device can automatically count actual opening time or closing time of the corresponding circuit breaker for the last 10 times, calculate the correction value of the opening time or closing time of the circuit breaker by utilizing a root mean square algorithm, and store the value into the fixed value of '1 DL opening time', '1 DL closing time', '2 DL opening time' or '2 DL closing time' of the device.
Claims (1)
1. A rapid switching device of a service power supply for providing an intelligent correction function for the opening and closing time of a circuit breaker is characterized by comprising a rapid switching device of the service power supply; the service power supply rapid switching device monitors the switching-on/off command signal of the incoming line circuit breaker; the station service power supply rapid switching device is connected to the position auxiliary contact of the incoming line circuit breaker;
the station power supply fast switching device can monitor whether the switching-off time and the switching-on time of the incoming line breaker are within a reasonable range, and can send out an alarm signal if the time exceeds the range;
the rapid switching device for the service power supply can automatically count the switching-off time and the switching-on time of the incoming line breaker, and correct the preset switching-off and switching-on time values of the breaker through an intelligent algorithm;
the service bus (3) is a working section bus corresponding to the service power supply fast switching device (0), and the working power supply incoming line (4) and the standby power supply incoming line (5) supply power to the service bus (3) in a mutually standby mode; 1DL (1) is a breaker of a working power supply inlet wire (4), and 2DL (2) is a breaker of a standby power supply inlet wire (5);
the switching-off command signal (6), the switching-on command signal (7), the jumping auxiliary contact (8) and the switching-on auxiliary contact (9) of the working power incoming line breaker 1DL (1) are all connected to the factory power supply fast switching device through hard wiring;
the switching-off command signal (10), the switching-on command signal (11), the jumping auxiliary contact (12) and the switching-on auxiliary contact (13) of the working power incoming line breaker 2DL (2) are connected to the factory power supply fast switching device through hard wiring;
when the station rapid power switching device (0) runs, the states of the opening command signal, the closing command signal, the jumping auxiliary contact and the closing auxiliary contact of the working power incoming line breaker 1DL (1) and the standby power incoming line breaker 2DL (2) are monitored in real time, and when the working power incoming line breaker 1DL (1) and the standby power incoming line breaker 2DL (2) send opening and closing switching, the actual opening time and the actual closing time of the breakers are calculated according to the state changes of the signals;
the intelligent algorithm corrects the preset values of the opening time and the closing time of the circuit breaker: if the actual switching-off time and the actual switching-on time of the working power supply incoming line breaker 1DL (1) and the standby power supply incoming line breaker 2DL (2) measured by the plant power supply fast switching device exceed the reasonable range: the actual switching-off time exceeds the inherent switching-off time +/-time threshold value provided by a breaker manufacturer or the actual switching-on time exceeds the inherent switching-on time +/-time threshold value provided by the breaker manufacturer, an alarm signal is sent out, and an operator is informed to overhaul the breaker; the time threshold value is used as a fixed value setting in the factory power supply quick switching device;
if the actual opening time and the actual closing time of the working power supply incoming line breaker 1DL (1) and the standby power supply incoming line breaker 2DL (2) measured by the plant power supply fast switching device are within a reasonable range, the results of the recent multiple opening and closing times are integrated, and the fixed values of the '1 DL opening time', '1 DL closing time', '2 DL opening time' and '2 DL closing time' set in the plant power supply fast switching device are corrected by using a weighted average algorithm so as to be used by the plant power supply fast switching device when power supply switching is needed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888889.0A CN106329706B (en) | 2016-10-11 | 2016-10-11 | Factory power supply fast switching device with intelligent circuit breaker opening and closing time correcting function |
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| CN201610888889.0A CN106329706B (en) | 2016-10-11 | 2016-10-11 | Factory power supply fast switching device with intelligent circuit breaker opening and closing time correcting function |
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| CN106329706A CN106329706A (en) | 2017-01-11 |
| CN106329706B true CN106329706B (en) | 2020-04-10 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111220873A (en) * | 2020-03-04 | 2020-06-02 | 深圳市吉祥腾达科技有限公司 | Test method and test system for hardware reliability of intelligent socket product |
| CN113162111B (en) * | 2021-03-30 | 2022-05-31 | 中国能源建设集团华中电力试验研究院有限公司 | Method and system for reducing reactive impact in power plant grid connection process |
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| CN1700550A (en) * | 2005-04-27 | 2005-11-23 | 叶念国 | Method for suppressing power transformer excitation surge current and suppressor |
| CN101504441A (en) * | 2008-12-31 | 2009-08-12 | 人民电器集团有限公司 | Intelligent high-voltage switchgear assembly detection apparatus |
| CN101517683A (en) * | 2006-09-25 | 2009-08-26 | 株式会社东芝 | Breaker open/closure controller |
| WO2009135519A1 (en) * | 2008-05-09 | 2009-11-12 | Siemens Aktiengesellschaft | Method and device for controlling a magnetic actuator |
| CN201893560U (en) * | 2010-11-21 | 2011-07-06 | 沈阳华岩电力技术有限公司 | Self-adaptive synchronous switch controller of 10kV capacitor |
| TW201237913A (en) * | 2011-03-11 | 2012-09-16 | Good Way Technology Co Ltd | Switching sequence compensation method of calibration AC relay voltage and computer program product thereof |
| CN103489702A (en) * | 2013-09-05 | 2014-01-01 | 瑞亿智能控制设备（深圳）有限公司 | Breaker on-off control device based on photoelectrical position detection and control method thereof |
-
2016
- 2016-10-11 CN CN201610888889.0A patent/CN106329706B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700550A (en) * | 2005-04-27 | 2005-11-23 | 叶念国 | Method for suppressing power transformer excitation surge current and suppressor |
| CN101517683A (en) * | 2006-09-25 | 2009-08-26 | 株式会社东芝 | Breaker open/closure controller |
| WO2009135519A1 (en) * | 2008-05-09 | 2009-11-12 | Siemens Aktiengesellschaft | Method and device for controlling a magnetic actuator |
| CN101504441A (en) * | 2008-12-31 | 2009-08-12 | 人民电器集团有限公司 | Intelligent high-voltage switchgear assembly detection apparatus |
| CN201893560U (en) * | 2010-11-21 | 2011-07-06 | 沈阳华岩电力技术有限公司 | Self-adaptive synchronous switch controller of 10kV capacitor |
| TW201237913A (en) * | 2011-03-11 | 2012-09-16 | Good Way Technology Co Ltd | Switching sequence compensation method of calibration AC relay voltage and computer program product thereof |
| CN103489702A (en) * | 2013-09-05 | 2014-01-01 | 瑞亿智能控制设备（深圳）有限公司 | Breaker on-off control device based on photoelectrical position detection and control method thereof |
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| CN106329706A (en) | 2017-01-11 |
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Address after: 211100, No. 100, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Applicant after: Jinzhi Science and Technology Co., Ltd., Jiangsu Address before: 211100, No. 100, general road, Jiangning District, Jiangsu, Nanjing Applicant before: Jinzhi Science and Technology Co., Ltd., Jiangsu |
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