At 11:37 on June 20th, the first set of 500 thousand volt regional safety and stability control system of Shandong power grid was formally put into operation. When the power grid in southern Shandong is an important channel of 500 thousand volt line current Zou Zao, the system can judge and intelligent remote control cut part load, for transmission line tails survive, to avoid the occurrence of blackouts. The system is the most stable load reduction system in Shandong power grid. The maximum load can reach 1 million 500 thousand kilowatts, which is spanning 3 power grids in Linyi, Rizhao and Zaozhuang.

The system is composed of the main station of the load cutting, the decision of the tripping sub station and the execution station of the load cutting. Load shedding is installed on the main 500 thousand volt substation in Zaozhuang, convicted of tripping at 500 thousand volts sub station installed in Langya substation, load shedding execution station located in Linyi Tianma, Shen Quan, Liu Qing, Chang Linzhu, Gong, Yang, Bao Quan, Zaozhuang, Junshan, Teng Bei du Temple and sunshine Wulian, Anton, Arashiyama 13 the 220 thousand volt substation. When the load shedding master station receives double trip signal according to Lang, according to the fault line to determine the trend of Zou jujube total load shedding, and in accordance with the established load shedding strategy will be under the command of load shedding to each station to perform load shedding and load shedding execution station receives the instruction after the excision of part or all load station.

In June 16th, Shandong successfully held the 2014 power Yingfengduoxia joint anti accident exercises, simulation of bad weather caused serious fault Zhaolang double 500 thousand volts. After the "failure", the power dispatching operators at all levels, according to the load situation of the power grid and the damage degree of the power grid structure, carry out the accident treatment. Regulatory agencies at all levels, operation and maintenance of the unit power plant and related coordination, rapid response, rapid adjustment of power output, load transfer, timely processing equipment, on-site inspection, the overload tripping line to send strong measures to ensure the stable operation of power grid. (Duan Deyong Zhang Bing)

Source of information: Shandong electric power company of national network