The Rebuild & Design Of Jingpohu Hydropower Plant Computer Supervisory And Control System

The Jingpohu hydropower plant was built in 1978,it consists 4 generaters,the capacity is 60MW(4×15MW),the generaters have worked for 28 years,the machines are quitely old .Although many additional equipments including the Computer Supervisory and Control System has been improved ,but it has not completely finished .In spite of the capacity of Jingpohu hydropower plant is small ,but there are few plants to meet the power peak,so it plays an important role in the east of Heilongjiang Power Grid. Because the Jingpohu hydropower plant can be used to generate peak power, the operate system cannot be shut down or restarted in short intervals, they also lack the operational flexibility to adjust load, so they are unsatisfied the demand of Automatic Generation Control(AGC).With the aim of the Power Grid"Catching 3 sides and Creating 1,Strengthening 1 side and Producing 3",it is evitable that the Power Grid and plant divided and compare the price in Grid. So we reform the computer supervisory and control system completely, the requires are satisfied.This paper analyses the development of the structure mode ,the Local Control Unit(LCU) as well as communication system ,and chooses configuration of Jingpohu hydropower plant . Plant's network adopts rapid Ethernet with the speed of 100Mbps ,LCU was connected and managed by SJ-30 what is the serial ports communication device. Aim at the importance of LCU in the Computer Supervisory and Control System, the flow chart and person and machine′s interface be introduced in this paper .The system has been applied in Jingpohu hydropower plant ,we have gotten a good result,it has achieved the requirement in soft-hardware install and functions, it also has created the demand for the operators. It has made a strong base and reliability for"Few man being on duty and remote controlling".