Flexible looped network control system operation and power flow optimization method

Abstract

The invention discloses a flexible looped network control system operation and power flow optimization method, and belongs to the field of electric power system operation and power flow optimization. The method solves the problem of reasonable system active power flow allocation problem under the normal and fault conditions of the flexible looped network control system. The method includes the steps that network parameters of a target power grid are obtained in real time based on a D5000 system; according to the obtained power grid basic parameters, the element load rate and the system power supply capacity serve as target conditions, and corresponding target functions are built; a multi-target optimization function is determined based on all the target functions; according to a fuzzy theory, subordinating degree functions of all the target functions are made, and the optical solution of the multi-target optimization function is obtained through a fuzzy algorithm. According to the method, the multiple target functions serve as constraint conditions, the optimal power flow allocation under the normal and fault operation conditions of the flexible looped network control system is obtained, and the reliability and economy of power grid operation are improved.

Description

technical field [0001] The invention belongs to the field of power system operation and power flow optimization, in particular to a flexible ring network control system operation and power flow optimization method. Background technique [0002] With the rapid development of the power system, the grid structure of the urban power grid has become stronger, which has greatly improved the power supply capacity and reliability of the power grid. But at the same time, it will inevitably cause the problem of excessive short-circuit current in the power grid. If the open-loop operation of the grid is used to solve the problem of excessive short-circuit current, it will bring great difficulties to the grid power supply capacity, power supply reliability, and grid scheduling flexibility. How to coordinate the power supply capacity of the power grid and the short-circuit current exceeding the standard is a major problem facing the current power grid dispatching operation. The traditi...

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Problems solved by technology

[0006] In order to solve the contradiction between the insufficient power supply capacity of the power grid and the problem of excessive short-circuit current, and to overcome the disadvantages of the lack of theoretical support in the traditional method of relying on experience to power the power grid in partitions, the present invention proposes a flexible ring network control system operation and power flow optimization method , by establishing objective functions for multiple objective conditions to optimize, the active power flow optimization results of the flexible ring network control system under normal and faulty operation modes are obtained, so as to determine the optimal active power support command value

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