Reactive voltage coordination control method based on comprehensive benefits of transmission and distribution power grid

Abstract

The invention provides a reactive voltage coordination control method based on comprehensive benefits of a transmission and distribution power grid. The reactive voltage coordination control method comprises enabling a subordinate power grid to upload gate characteristics to a superior control center; enabling the superior control center to establish a superior and subordinate reactive voltage coordinated optimization global model according to the gate characteristics; performing virtual control partitioning on a superior administered power grid, and obtaining a coordinated optimization calculation model of a plurality of virtual control partitions; enabling the superior control center to obtain optimized values of gate coordination variables of the subordinate power grid by calculation according to the coordinated optimization calculation model and send the optimized values to the subordinate power grid; enabling the subordinate power grid to add coordination variable restraint in an automatic voltage control (AVC) algorithm according to the optimized values of the gate coordination variables, and obtaining a virtual control partition optimization strategy based on the comprehensive benefits of the transmission and distribution power grid; and enabling the superior power grid and the subordinate power grid to perform reactive voltage coordination control according to the virtual control partition optimization strategy. The method improves the running state of the whole network, improves system benefits, reduces model calculation scales and complexity, and is good in reliability and high in compatibility.

Description

technical field [0001] The invention relates to the technical field of electric power system voltage control, in particular to a reactive power and voltage coordinated control method based on comprehensive benefits of transmission and distribution networks. Background technique [0002] In the field of reactive power and voltage control in power systems, different dispatching systems in the transmission and distribution network determine the executors of coordinated control between regions. In the hierarchical partition dispatching system, coordinated control is performed by the superior control center, and the lower-level power grid realizes inter-regional decoupling control by receiving the gateway setting value or interval issued by the superior control center. The higher-level control center not only serves as a coordination center, but also has its own power network and corresponding controllable resources. For example, in my country's power grid system, the provincial ...

AI Technical Summary

Problems solved by technology

[0004] In order to ensure the safe, high-quality, and economical operation of the entire network, while optimizing and controlling the power grid in the area under its jurisdiction, the transmission grid side control center needs to consider the capabilities, needs, and benefits of the lower-level grid that are not consistent with its information modeling, and coordinate , and the prior art cannot solve the above problems very well

Images