Dispatching Automation Systems Design And Implementation

It plays an important role in the national economy and social life at every country to product electric power, the EMS system is an important means to ensure the power system running safety, economy and high quality.With the development of economy and technology, the requirement of electric power is constantly increased. And these require Power system running more safety, more economy and high quality. In order to meet the demand, The zhengzhou electric power bureau organized the update of SCADA system of Zhengzhou Electric Power Dispatching Center (ZZEPDC), in addition, constructing SCADA system of nongke, dongfeng, niuzhai,wolong center control master stations. I was luckily to take part in the development work of these systems.Taking the SCADA system of ZZEPDC as the foundation, this paper expounds the experience acquired from participating in the developing work.The electric power dispatching automation system is composed of master station and slave stations. It process is that through the communication channel, the master station(AGC/EMS/SCADA) receive the local data of the slave stations and power plants, and play supervisory and data acquisition function of slave stations. The RTU of the slave stations receive the instruction from the master station, control the equipment of slave station.This paper elaborates the design and implementation of SCADA system of ZEPDS that is based on Client/Server computing model. According to the real circumstance of Zhengzhou Electric Power Network, the system adopts Oracle 8i, which runs under UNIX, and Visual C++, which can offer object oriented method, as background database and foreground programming tool respectively. The system involved data acquisition, data coding transfer, data manage and some advanced application of electric power network, It offer a power technology means to assure the safety of electric power network. It has high security and practicability, the structure is clear, the user interface is friendly. We obtain better practical and economy profit in using the system.First, the paper introduces the reason to develop the SCADA system of ZEPDS and its technical background of bringing. Then, in the second chapter, the paper discusses structure and function modules of the system. In the third chapter, the paper introduces data structure of the system. The analysis, design and implementation of the SCADA system of ZEPDS are discussed in the fourth as the most important part of this paper. In the fifths chapter, the paper introduces the safe means take in the system. In the end, the author analyzes the existence and future of this system.Now, the SCADA system of ZEPDS has accomplished the developing assignment. It has been putting into test_running in Zhengzhou Electric Power Dispatching Center. From the result of test_running, this system has attached the goal of designing, the using result is good, it can server all users more quickly and more accurately.