A method for the operation and power flow optimization of a flexible ring network control system

Abstract

The invention discloses a flexible ring network control system operation and power flow optimization method, which belongs to the field of power system operation and power flow optimization, and solves the problem of reasonable distribution of system active power flow in the normal and fault modes of the flexible ring network control system. The method includes: obtaining the network parameters of the target power grid in real time based on the D5000 system; according to the obtained basic parameters of the power grid, taking the component load rate and system power supply capacity as the target conditions, establishing a corresponding objective function; based on each objective function, establishing a multi-objective optimization function; according to the fuzzy theory, formulate the membership function of each objective function, and use the fuzzy algorithm to obtain the optimal solution of multiple objective functions. This method takes the multi-objective function as the constraint condition, and by solving the multi-objective optimization function, the optimal power flow distribution of the flexible ring network control system under normal and fault operation modes is obtained, which improves the reliability and economy of power grid operation.

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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