Design And Development Of Voltage Supervisory Information Software Based On GIS

The power industry, as national fundamental industry, is closely related to national economy, social development and people’s life. It provides energy for national economy. With the rapid progress of the society and the development of science technology, a large number of computers and precision instruments are increasingly being used to industries like aerospace, finance, healthcare and communications. Any disturbance in power quality is possible to cause serious economic damage to those industries. So we have an increasing requirement for the power quality. The safty and efficient operations of the power industry can hardly do without the application of electric power supervisory control software system. At present, although voltage quality monitoring softwares at home and abroad all have their own characteristics, they can cover basic requirements for the power industry. There are still some deficiencies, such as the poor openness of the software and expression form, unable to response to the relationship of the objects’ space and attribute information. Therefore, to solve those problems, this thesis developed a voltage quality monitoring software based on GIS. It combines the space and attributes information of the objects in the power industry together. The software provides an information management platform which has the functions such as data management, inquiry and statistic analysis. The main contributions of the dissertation are as follows:First, according to present developing situation of voltage quality monitoring software, this thesis designs voltage quality monitoring software based on GIS. The system management module provides the management of users and privilege; resource management module provides the management of departments and monitoring points; Geographic information figure module provides a visualization platform for users, realized the functions of map loading, display, zoom, shift, distance and area measurement. This thesis combines the voltage data with Geographic information data; users can realize the equipment distribution and operation in the map. This thesis uses a variety of techniques such as SSH framework, ExtJS, Ajax and combines GIS and voltage monitoring together, realizing the power grid of information and data map-visualization.Second, the software also provides real-time voltage alarm and fault prediction function. Voltage real-time alarm function, keeping on monitoring the monitoring points, such as a monitoring station or lines that occur as abnormal(super limit, below limit or network fault), According to the different types of fault, the system will mark the monitoring points or line with corresponding symbol so as to help the managers to locate the fault position quickly. Based on time series model, we analysis and process the historical data of the monitoring points, deduce the state parameters of the monitoring stations in the future short-term time, and compare the predict results to the attribute datas of the monitoring points. Fault prediction, refers to give out a fault alarm and mark the substation, if the predicted results occur as some abnormal problems such as super limit or below limit. Fault prediction achieves transform from passive mode to the active mode, the passive mode means when the system malfunctions, maintenance personnel take emergency measures; while the active mode means that people can forecast the quality of voltage, and take measures to the monitoring points which are likely to break down before the fault happen.Finally, this thesis not only tests and verifies the function of the software, but also tests the performance of the software. We divide the system function into some partial functions and tests all of them, at the same time; we also test the concurrency of the software. The results show that the software can meet the requirements of the system, and part of the function and performance beyond the design goal. The software designed in this thesis has been used to a power bureau of Zhejiang province. At last, this thesis has a summary and outlook on the work.