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Processing method and device for bus tie circuit

A processing method and processing device technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of capacitors not being able to operate in time to trip, closing inrush current, etc., and achieve the effect of avoiding inrush current or short circuit phenomenon

Active Publication Date: 2020-09-18
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a processing method and device for a bus tie circuit to solve the problem in the related art that when the fast switching device closes the bus tie circuit breaker and the power supply of the bus bar is restored, the low voltage protection of the capacitor cannot trip in time, resulting in a closing shock current problem

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  • Processing method and device for bus tie circuit
  • Processing method and device for bus tie circuit
  • Processing method and device for bus tie circuit

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0022] It should be noted that the terms "first" and "second...

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Abstract

The invention discloses a processing method and a device of a bus connection circuit, wherein a first bus bar and a second bus bar are connected through a bus connection switch, and the first bus baris connected with a capacitor. The method comprises the following steps: after determining that the inlet switch of the first bus bar is open, closing the movable joint corresponding to the inlet switch; After closing the corresponding movable joint of the inlet switch, the trigger capacitor is disconnected from the first bus bar; After the capacitor is disconnected from the first bus bar, the busconnection switch between the first bus bar and the second bus bar is closed. The present application solves the problem of formation of the closing impulse currentin the related art caused by that the low voltage protection of the capacitor cannot be tripped in time after the busbar power supply is restored andthe quick-cutting device operates to close the bus-connected circuit breaker.

Description

technical field [0001] The present application relates to the field of automation devices, in particular, to a processing method and device for bus-connected circuits. Background technique [0002] At present, the plant power supply system mostly adopts a single bus segment structure, such as figure 1 As shown, most of the loads are electric motors, and the compensation method adopts local compensation. In order to improve the reliability of power supply, when the I-section incoming line switch 1DL is abnormally opened, the quick-cutting device acts to close the bus-tie circuit breaker 5DL, and the I-section bus Power restored. [0003] However, due to the short action time (millisecond level) of fast switching, the voltage decay of the capacitor itself in this section is less when the I-section bus comes in, but its voltage angle may be different from the system power supply angle. At this time, the capacitor The low-voltage protection has not yet tripped, which will form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/22H02H7/26
CPCH02H7/226H02H7/26
Inventor 付兵越任英武崔建设蔡伊娜焦志刚乔光辉马雄何利平张伟
Owner CHNA ENERGY INVESTMENT CORP LTD
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