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Risk Control of Transmission Line Overload for Wind-Integrated Power Systems
Institution:[1]School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China; [2]Plant One, Zhongyuan Oil Field, Puyang 457000, China
Abstract:With the rapid development of the wind generation,uncertainties of random wind and load bring some inevitable impacts on the security of power system. Once the uncertainty causes line power to exceed its limit, line overload will occur. The paper presents the risk control of transmission line overload for windintegrated power systems. Firstly, a risk control model of line overload is proposed considering the uncertainties of loads,generator outputs and wind powers. The generation cost and security level of system associated with overload can be optimally controlled. Then path following interior point method is employed to carry out the optimal control. Finally the simulation is made on the modified IEEE-30 bus system. Results show that the risk of line overload is effectively reduced through the optimization of control variables.
Keywords:optimal power flow(OPF)  path following interior point method  risk control
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