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Rapid test method for secondary voltage loop protection function of substation

A technology of secondary voltage and testing method, which is applied in the direction of emergency protection circuit device, measuring electricity, measuring device, etc.

Pending Publication Date: 2020-10-27
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +1
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Problems solved by technology

Therefore, there are the above defects and deficiencies in the traditional protective device testing method

Method used

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  • Rapid test method for secondary voltage loop protection function of substation

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] The 110kV substation used in the present invention shares two transformers, the high-voltage side is 110kV, and the low-voltage side is 10kV, and the way of inner bridge connection is adopted. The 10kV part adopts a single busbar segment, which is the busbar section I and the busbar section II...

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Abstract

The invention discloses a rapid test method for a secondary voltage loop protection function of a substation. The method aims at a 10kV part of a 110kV substation, the test process of a relay protection device is simplified by using the common part of the 10kV part of the 110kV substation, and compared with a traditional test mode, the method can prevent mechanical repeated test of the same type of protection devices, so that the test efficiency of the voltage loop part of the relay protection device is improved. As only the safety measure of the voltage loop need to be tested at the bus, theaccident risk caused by the fact that the safety measures are not implemented or are not recovered in place is avoided.

Description

technical field [0001] The invention belongs to the field of relay protection, in particular to a quick test method for the function and protection of secondary voltage loops of 10kV parts in 110kV substations. Background technique [0002] The relay protection device will detect the fault or abnormal situation in the power system, so as to isolate, cut off the fault part or send an alarm signal, which is a very important safeguard measure in the current power system. Professional maintenance personnel for relay protection will regularly test the relay protection devices and their corresponding circuits in the substation to ensure that the circuits of the devices are complete and function correctly. However, when the relay protection device is tested in the field, it is carried out according to the interval. Every time a relay protection device is tested for an interval, it is necessary to take corresponding safety measures for its voltage and current circuits, and restore ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00H02H7/26H02H7/22
CPCG01R31/00H02H7/26H02H7/22
Inventor 徐洋超詹加华陈骏杰姚惠达俞小虎高宇男方珺陶威尤俊杰李祥耀刘维康朱明良连亦芳秦建松
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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