The Research On Reactive Power Optimization Of Hybrid AC/HVDC Power System

As power market become hot topic in the electric world and power market was practically tested in Dongbei and Shandong Power Grid, the quality and beneficial of the power grid were more and more greatly considered. Power delivering to the consumers with high voltage quality and low power loss was what we desired, and was one of the most important purpose in the consideration of power market. Achieving that purpose need us to utilize the technology of reactive power optimization. Reactive power optimization was one of the old topic in the electric world. As the development of the electric industry, new situation occurred. And we need present new model to deal with the renovated problem. The technology of High Voltage Direct Current was hot recently. And there were more than ten projects of HVDC in China already. And in the future, there will be some more projects of HVDC in the power grid uniting about Dongbei and Russian. HVDC will play a more and more important role in the electric world then. Hybrid power system will increasing rapidly. And hybrid power system is hot topic now. So how to deal with the problem of reactive power optimization of hybrid power system is what this paper presented.For dealing with the problem above,this paper did researches as below:(1) did research on the basic knowledge of HVDC,and analysed emerging and controlling way of the reactive power in HVDC.(2) did research on Newton-Raphson Load Flow and Gauss-Seidel Load Flow and Fast Decoupled Load Flow methods in the area of ac load flow calculating. And the two ahead were especially discribed.And then did research on Uniting Load Flow and Alternating Load Flow in the area of hybrid system .The paper quoted an example to testify to correctness of the method.(3) Summarized the methods of in the area of reactive power optimization in power system.And analysed advantages and disadvantages and fitness area of the methods.And PSO was especially discribed(4) Presented the model of reactive power optimization of hybrid power system, considering the controlling and status variates of HVDC.And presented the process of solving way with PSO, and verified the correctness of the model with IEEE9 and 30 examples.