A fast protection system
A protection system and fast technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of increasing the failure rate of the protection system, increasing the cost, etc., to avoid the delay of the protection action, improve the quickness, and take into account the equipment cost. Effect
Active Publication Date: 2019-05-21
NR ELECTRIC CO LTD +1
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Problems solved by technology
To simply increase the speed of logic operations and communication transmission, in addition to the processing capabilities of the chip itself, it is also necessary to consider factors such as the cooperation of all peripheral circuits and heat dissipation, which will increase costs, and long-term high-load operation will also increase the failure rate of the protection system
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[0020] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0021] A fast protection system such as figure 1 As shown, it includes three sets of the same relay protection device and at least one set of two-out-of-three logic devices. Generally, such as figure 1 As shown, there are two sets of two-out-of-three logic devices, that is, dual settings are adopted, and each set of relay protection devices is connected to each set of two-out-of-three logic devices. When the outputs of two sets of relay protection devices are consistent, then The two-out-of-three logic device performs the protection action export, that is, outputs the protection action. Even if one of the three relay protection devices fails, the...
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The invention discloses a rapid protection system, which comprises three sets of same relay protection devices and at least one set of two-out-of-three logic device, wherein each set of relay protection device is connected with each set of two-out-of-three device and carries out protection action outlet through the two-out-of-three device; the rapid protection system is characterized by also comprising rapid protection modules which are the same as the two-out-of-three devices in quantity; the fast protection modules extract electrical quantity parameters corresponding to multiple rapid protections from merging units; and when the electrical quantity parameters meet the judgment conditions of at least one rapid protection, protection action outlet is carried out. Preferably, two sets of two-out-of-three devices and two sets of rapid protection modules are provided. The performance and the cost of the relay protection system are comprehensively considered, the problem of a protection action delay or an increase of the load rate of the protection system in a failure is solved, and the quickness, the reliability and the stability of the protection system are improved.
Description
technical field [0001] The invention relates to a fast protection system. Background technique [0002] At present, the configuration schemes of relay protection systems used in the field of electrical engineering technology are basically based on the principle of double redundant configuration and triple configuration. With the development of electrical technology, the voltage level of the power system is higher and the capacity is larger. , more applications of new technologies and more flexible configuration and structure of the power grid have put forward higher requirements for the reliability and quickness of the protection system. [0003] In the conventional double-set redundant configuration relay protection system, the start-up element and protection element in each set are respectively input by independent sampling units. Due to the large number of signals connected to the protection system, the number of sampling units increases, thereby increasing the invest. ...
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IPC IPC(8): H02H7/26
CPCH02H7/261
Inventor 姜崇学卢宇董云龙汪楠楠潘磊邱德峰鲁江李钢丁久东王柯胡兆庆王辉
Owner NR ELECTRIC CO LTD