A Power Control Method for UHV Tie Lines Considering Responsibility Index

Abstract

The invention discloses a responsibility-degree-index-considered extra-high voltage interconnection wire power control method. A master control area is built in an AGC system, area control over an interconnected network is achieved, a power fluctuation qualified threshold value of an interconnection wire of an area power grid and the interconnected network is set, responsibility degree indexes of power fluctuation of a control area ACE and the interconnection wire are calculated according to an area control mode, responsibility degree components are calculated according to the responsibility degree indexes, power adjusting requirements are calculated according to calculation of the power fluctuation responsibility degree indexes of the ACE and the interconnection wire, and finally the power adjusting requirements are distributed among control units. As for the extra-high voltage interconnection wire power fluctuation problem, responsibility assessment indexes of the area power grid to the extra-high voltage interconnection wire power fluctuation are improved, and the good application prospects are achieved.

Description

technical field [0001] The invention belongs to the field of electric power system control, and in particular relates to a method for controlling the power of an UHV tie line considering a responsibility index. Background technique [0002] In 2009, the Jindongnan-Nanyang-Jingmen 1000 kV UHV AC test demonstration project was officially put into operation, opening a new era for the State Grid UHV large power grid. In order to objectively and fairly evaluate the effect of North China and Central China power grids on the power control of UHV tie-lines, the dispatching center of the State Grid Corporation of China implements T standard assessment on the control of UHV AC tie-lines. [0003] With the commissioning of the UHV AC transmission project, the active power disturbances of power generation and loads occurring anywhere in the interconnected grid will have an impact on the transmission power of the tie line, resulting in a large-scale fluctuation in the power of the UHV ti...

AI Technical Summary

Problems solved by technology

[0005] At present, network dispatching and direct dispatching units participate in load balance control in a plan-tracking manner. When there is a large deviation between the ultra-short-term load forecast and the actual load of the grid, the adjustment made by the network dispatching direct dispatching unit to track load changes may be different from the provincial dispatching ACE (AreaControlError, AreaControlDeviation) Conflicting adjustments

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