A substation accident lighting automatic switch and AC phase loss alarm device

Abstract

The invention discloses a substation accident lighting automatic switching and AC phase loss alarm device, which can be directly installed on the standard screen of the substation and is used to automatically input the DC accident lighting power supply when the AC power supply fails to supply power to the normal lighting load. The emergency lighting automatic switch circuit for power supply of emergency lighting load, and the AC power phase loss alarm circuit which is connected with the accident lighting automatic switch circuit and used for automatic monitoring of the operation of the AC power supply used in the substation. The substation accident lighting automatic switching and AC phase loss alarm device described in the present invention can overcome the defects in the prior art that the substation accident lighting needs manual switching, and there is no early warning when the AC power supply phase is missing, so as to realize automatic switching of substation accident lighting and AC It has the advantage of early warning when the power supply phase is missing.

Description

technical field [0001] The invention relates to the technical field of substation lighting systems in electric power systems, in particular to a substation accident lighting automatic switching and AC phase loss alarm device. Background technique [0002] With the further deepening of the high-quality service work of power supply enterprises, providing qualified electric energy to power users and ensuring safe and reliable power supply to power users has become an important political, economic and social responsibility of power supply enterprises. As an important part of power supply, that is, the safe and stable operation of substations plays a very important role in it. [0003] The lighting system of the substation, especially the emergency lighting system, is an important part of the secondary system in the substation. It can provide a good lighting environment for the operators and ensure that the operators can carry out equipment inspections in the dark and in poor lig...

AI Technical Summary

Problems solved by technology

[0004] Taking Tianshui Power Supply Company as an example, the emergency lighting of 25 substations under the jurisdiction of Tianshui Power Supply Company’s substation operation and maintenance work area cannot be automatically switched, requiring manual input by operators, which directly affects the correct operation of operators to troubleshoot and quickly restore power supply

Moreover, none of the 25 substation AC systems under the jurisdiction of Tianshui Power Supply Company's power substation operation and maintenance work area has a phase-loss alarm function, and it is impossible to detect the phase-loss abnormalities of the substation AC systems in time.

[0005] In the process of realizing the present invention, the inventors found that in the prior art, the emergency lighting of the substation needs to be manually switched, and there is no early warning when the AC power supply is out of phase.

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