Data processing method of reactive voltage in urban power grid and data processing system

Abstract

The invention provides a data processing method of reactive voltage in an urban power grid and a data processing system. The invention conducts an analysis of the 220kV power grid reactive voltage, 110kV and below power grid reactive power releasing, 220kV power grid inductive reactive compensation, 220kV partition unit phase advance capacity, 500kV power grid reactive voltage and low resistance input voltage sensitivity by acquiring data during a light load period, and conducts an analysis of the 220kV power grid reactive voltage, 220kV power grid capacitive reactive compensation, 220kV partition power grid dynamic reactive reserve, 500kV power grid reactive voltage and voltage stability by acquiring data during a heavy load period. The invention realizes the reproduction of reactive voltage conditions of the urban power grid during the light load period and the heavy load period, determines the problems in terms of the voltage reactive operation and control in the urban power grid, and provides a basis for further improvement measures and recommendations.

Description

technical field [0001] The invention relates to the field of urban power grid reactive voltage, in particular to a data processing method and data processing system for urban power grid reactive voltage. Background technique [0002] In a typical urban power grid, the difference between peak and valley power consumption is large, and the problems of voltage and reactive power operation and control are prominent. On the one hand, during the light load period, due to the high conversion rate of the line cable and the large charging power, it is difficult to balance the inductive reactive power. For a long time, affected by the sharp drop in load during statutory holidays, urban power grids have been characterized by insufficient inductive reactive power compensation and high voltage. At the same time, the reactive power injection of the filter of the DC converter station and the mediation of a large number of units for system peak regulation further affect the reactive power ...

AI Technical Summary

Problems solved by technology

On the one hand, during the light load period, due to the high conversion rate of the line cable and the large charging power, it is difficult to balance the inductive reactive power

For a long time, due to the sharp drop in load during statutory holidays, urban power grids have shown the characteristics of insufficient inductive reactive power compensation and high voltage

At the same time, reactive power is injected into the filter of the DC converter station, and a large number of units are regulated for system peak regulation, which further affects the reactive power balance and voltage regulation capability of the power grid.

On the other hand, during the heavy load period, the dynamic reactive power reserve of the unit is reduced. With the intensive landing of high-power DC in the city, the successive blocking of multiple DC circuits may induce voltage stability problems.

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