Monitoring and alarming system for DC power supply in transformer substation

Abstract

The present invention provides a monitoring and alarming system for a DC power supply in a transformer substation. A DC power supply side monitoring module in the system is used for monitoring a charger, a bus and a storage battery in the transformer substation in real time and sending the monitoring data to a central processing module. The central processing module is used for receiving the monitoring data of the DC power supply side monitoring module, generating an alarm command when the monitoring data is abnormal, sending the alarm command to the alarm fire fighting module, and sending the received monitoring data and a telecommand signal generated accoridng to abnormal monitoring data to a remote monitoring center. The alarm fire fighting module receives the alarm command and extinguishes a fire on target abnormal equipment according to the alarm command. According to the system, the DC power supply is monitored in real time and the fire is extinguished timely, the safety and stability of DC power supply operation are improved, the human cost is reduced at the same time, the danger is controlled in a controllable range, and the stability of the transformer substation is improved greatly.

Description

Technical field [0001] The invention relates to the field of operation and maintenance of substations, in particular to a monitoring and alarm system for DC power supplies in substations. Background technique [0002] In recent years, due to various reasons such as DC power supply system operation and maintenance management and equipment quality, there have been many primary and secondary equipment failures or accidents in substations caused by battery explosions, fires or failures of charging devices, monitoring devices and other DC power system failures. , Resulting in greater economic losses. Especially for 110kV substations, the battery pack screen and the protection cell are co-located in the same room. Once the battery catches fire, the entire protection cell will be burnt down, posing a serious threat to the safe operation of the power system and the stable development of the national economy. However, the reasons for the failure of various components of the DC system, so...

AI Technical Summary

Problems solved by technology

[0002] In recent years, due to various reasons such as DC power system operation and maintenance management and equipment quality, there have been many substation primary and secondary equipment failures or accidents caused by failures of DC power systems such as battery explosions, fires, or failures of charging devices and monitoring devices. , resulting in large economic losses

Especially for 110kV substations, the battery panel and the protection cell are in the same room. Once the battery catches fire, the entire protection cell will be burned down and cause serious losses, posing a serious threat to the safe operation of the power system and the stable development of the national economy.

However, there is still a lack of qualitative, especially quantitative analysis of the causes of failure of various components of the DC system, some characteristic quantities in the early stage of failure, and the impact on the DC system after failure.

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