Optimal Control Of Power Flow In Electromagnetic Loop Network System With Flexible Looped Network Controller

Traditional methods of electromagnetic loop network mainly starts from the power grid operation mode and the future power grid planning aspects, in the actual operation of the system as far as possible to avoid electromagnetic loop network loop closing operation, the long-term planning of power grid also try to avoid formation of new electromagnetic loop network, and gradually solve the serious problems of electromagnetic loop network existing. In recent years, more and more scholars have begun to pay attention to the FACTS device in the treatment of electromagnetic loop network has a wide range of application prospects. Among them, a class of power flow control devices, represented by UPFC, can optimize the system flow distribution, but it is difficult to be widely used due to its limited capacity and high cost. At present, with the flexible HVDC technology continues to mature, scholars have proposed using the active reactive power flexible control ability, not on the AC system short-circuit current level impacts and AC system fault isolation and advantages to solve the problems of electromagnetic loop network. In this paper, the flexible loop network controller concept.In this paper, we study the describes the fundamentals of flexible loop network controller and converter topology structure of the valve, and from the economic perspective and comparative analysis to adapt to different scenarios flexible loop network controller main wiring design. At the same time, study the control strategy of flexible loop network controller system, substation and valve level. Secondly, based on the flexible loop network controller power exchange mechanism analysis of the external power characteristics and operating range, and by building a flexible loop network controller simulation model of the trend of the system is verified. Finally, through the complex electromagnetic loop network power flow distribution characteristics analysis of the causes of electromagnetic loop network power circulation, and pointed out that the flexible loop network controller installed after the electromagnetic loop network, given a reasonable system level control instruction can improve the distribution system power flow.Through the establishment of the steady state model of flexible loop network controller and the research on the power distribution of the flexible loop network controller, the control effect of the flexible loop network controller on the power distribution of the electromagnetic loop network is analyzed quantitatively by using the Newton alternating iteration method. And the network loss minimum as the objective function, and AC system and DC system of equality, inequality constraints, the catastrophic genetic algorithm with flexible loop network controller model of optimal power flow is calculated the flexible loop controller reasonable system level instruction.The flexible loop network controller of electromagnetic loop network power flow optimization control method and trend of electromagnetic loop network, the optimal control of the new solutions, and flexible loop network controller engineering application specified reasonable system level reference instruction provides a technical reference, to optimize the electromagnetic loop network power flow distribution, improve the transmission reliability and economy has important significance.