| DC system power supply substation relay protection device, switch operation, automation equipment, can be described as substation arteries, especially in the electric power system failure, system and equipment back to normal power supply system is essential. Is the key to ensure the safe and stable operation of power system. The China State Grid Corp of the DC system operation and management norms such as7+2documents, on the DC system operation, maintenance and management, presents a clear and strict requirements.Because of the current substation integrated automation degree is more and more high, and the unattended substation has become a trend, and the DC power system directly to provide the basis for other automation equipment of the power source, so the DC power supply itself but the problems followed by failure protection, switch tripping, channel. The consequences be unbearable to contemplate. In recent years, major accident of electric power DC power supply problem to have occurred, causing great economic losses, DC remote monitoring system also leads to.This article combine the actual situation and problems, research and the establishment of DC remote monitoring and maintenance system, monitoring the running state of DC charger, battery voltage, resistance, temperature and monomer, control the bus voltage, bus voltage, switching control bus grounding, important characteristic parameters of breaker tripping power detection, charge-discharge test can also be carried out the remote control battery, but found the abnormal state of DC power supply immediately sends out sound and light alarm, directly report DC monitoring center through Ethernet, and even a direct report to the person in charge of mobile phone, the responsible person first time notice, so that timely treatment, so as to avoid the occurrence of major power accident. |
PDF Full Text Request