A Multiple Protection System for Power System
A multiple protection and power system technology, applied in the direction of automatic disconnection emergency protection devices, emergency protection circuit devices, electrical components, etc., can solve the problems of difficult maintenance of the protection system and high probability of refusal to reduce the risk of refusal of protection risk, improved reliability, and ease of maintenance
Active Publication Date: 2020-01-03
国网冀北电力有限公司超高压分公司 +1
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[0005] In view of this, this application provides a multiple protection system for the power system, which is used to provide multiple protections for the power system, and solves the problem that the current protection system is difficult to maintain or has a high probability of refusal
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[0040] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0041] figure 1 It is a structural block diagram of a multiple protection system of a power system provided by the embodiment of the present application.
[0042] Such as figure 1 As shown, the multiple protection system provided by this embodiment is used to output the system protection control signal required to protect the power system. The system specifically includes a first protection device 10, a second protection device 20, a third protection device 30, a Four protection devices 4...
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The present application provides a multiple protection system for a power system. The multiple protection system particularly comprises a first protection device, a second protection device, a third protection device, a fourth protection device, and an outlet logic circuit, wherein the outlet logic circuit comprises a first logic circuit, a second logic circuit, and a control signal output circuit. The system can output the result of the total protection action if the four sets of protection devices do not withdraw. When one set of protection device exits, any two of the remaining three sets of protection devices can output the total result of protection action. In the case of two sets of protection devices withdrawing, either one of the remaining two sets of protection devices can outputthe total result of protection action; In the case of three sets of protection device withdrawal, the remaining one set of protection device action to output the overall protection action results, sothe system can minimize the risk of protection refusal, while facilitating maintenance, improve the reliability of the overall protection.
Description
technical field [0001] The present application relates to the technical field of power protection, and more specifically, relates to a multiple protection system of a power system. Background technique [0002] With the gradual increase of the voltage level and transmission capacity of the power system, the demand for the stability and reliability of the control and protection system is also increasing rapidly, especially the reliability of the protection system is very high. In order to improve the reliability of the protection system, multiple protection schemes are adopted in some important occasions in the power system, and the common ones are two-out-of-three protection schemes and complete dual protection schemes. [0003] Three out of three protection schemes are equipped with three sets of independent protection devices and channels with identical functions, and the output adopts two out of three. The triple protection and the two-out-of-three device constitute a wh...
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IPC IPC(8): H02H3/05
CPCH02H3/05
Inventor 张晓飞李振动吴淘杨明张雷金海望杨杰余黎明李金卜安海清田凯哲岳娜刘文昊李建忠刘恒王大中简哲
Owner 国网冀北电力有限公司超高压分公司