Machine card protecting device in power system
A power system and protection device technology, applied in the field of design power system fault analysis and protection, can solve problems such as complex operation, high cost, unfavorable power system transformation, etc., achieve a high degree of integration, facilitate design and on-site construction, and improve system reliability sexual effect
Inactive Publication Date: 2010-11-17
上海昌瑞电力自动化设备有限公司
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Problems solved by technology
However, the existing power system protection devices are expensive and complex to operate, which is not conducive to power system transformation
Method used
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[0014] In order to better understand the technical content of the present invention, specific embodiments are given and described below in conjunction with the accompanying drawings.
[0015] The invention provides a device card protection device in a power system, which can automatically record and analyze the waveform of a faulty node in the power system, so that the protection device can be debugged and maintained.
[0016] Please refer to figure 1 , figure 1 Shown is a schematic structural diagram of a machine card protection device in a power system according to a preferred embodiment of the present invention. The present invention provides a machine card protection device in a power system, which includes: a master control unit 100 for monitoring multiple nodes in the power system; a machine card protection unit 110, connected to the master control unit 100, which has a protection power The circuit breaker tripping and closing coil functions of multiple nodes in the sy...
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The invention provides a machine card protecting device in a power system, comprising a total control unit, a machine card protecting unit and a protective processing unit, wherein the total control unit is used for monitoring a plurality of nodes in the power system; the machine card protecting unit is connected with the total control unit and has the function of protecting tripping and closing coils of circuit breakers of a plurality of nodes in the power system; and the protective processing unit is connected with the total control unit and carries out a protecting action on the nodes of the power system according to the work status of the machine card protecting unit. The machine card protecting device in the power system has the function of protecting the tripping and closing coils of the circuit breakers and prevents the circuit breakers from being burnt down due to the failed movement of the circuit breakers and long-time electrification of the tripping and closing coils.
Description
technical field [0001] The invention designs the field of power system fault analysis and protection, and particularly relates to a device card protection device in a power system. Background technique [0002] With the improvement of power grid operation level, dispatch centers at all levels require more information in order to grasp the operation status of power plants, power grids and substations in a timely manner, and improve the controllability of substations. Accident measures, etc., that is, the unmanned management mode is adopted to improve labor productivity, reduce the possibility of human error, and improve the reliability of operation. On the other hand, the application of modern computer technology, communication technology and other advanced technical means has changed the mode of traditional secondary equipment. In order to simplify the system, share information, reduce cables, reduce floor space, and reduce construction costs, the substation has been changed...
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IPC IPC(8): H02J13/00H02H7/22
CPCY04S10/20Y02E60/725Y02E60/00
Inventor 张明锐胡秋奇孙华
Owner 上海昌瑞电力自动化设备有限公司