| Hydropower,as the most important power source in China's power transformation,will play an invaluable role in achieving enery clean development goals in the future.With the further development of power system reform,Power Exchange centers and Power Trading System have been established in various parts of the country.Due to the uncertainties of hydropower,the power trading system in the area of hydropower is extremely complex,and power trading system has a large amount of data interaction with external systems,including marketing,metering and dispatching system,which together support the operation of power exchange system.Therefore,it is significant to make sure the accuracy and ths speed of data exchange between external systems and power exchange system.Based on the background of power exchange in a certain southern province,a data exchange system for data transmission between power exchange system and marketing,metering,dispatching and taxation systems is designed and realized to better support thh operation of exchange system.And the research is based on the three aspects:the complexity of data interaction,the modeing of interactive data,the subscribe/publish model.The main contents of paper are as follows:(1)Taking a certain southern province as an example,the paper combines the data interaction service in the Power Trading System in this area to analyse and summarize the complexity of data interaction in the current transaction system from the perspective of interactive system business.And on the basis of the data exchange business of the power trading system,the construction demand and the interactive content of the data exchange system are deeply analyzed,which provides the basis for the constructtion of the power transaction data exchange system.(2)The XML technology is used as data format in the construction of data exchange system because of the advantages of simple,flexible and estensible.In view of the existing information isolated islands and the disunity of data standards among various business systems,the paper combines the interactive services of the power trading system in the area to establish a unified data model from the four angles of basic class,hydropower,transaction and settlement,which promotes the integration and sharing of the system.(3)In order to solve the high coupling and low efficiency problem in the current data exchange between the power trading system and the external business system,the subscribe/publish model is applied to the data interaction system.The subscribe/publish model is an asynchronous communication mechanism,which has the characteristics of loosely coupled space,loosely coupled time and loosely coupled control.While avoiding the complexity of the Web Service interface communication,it can greatly reduce the coupling between the interactive systems and improve the efficiency of data interaction. |
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