Power checking method

Abstract

The invention discloses a power checking method, which relates to the technical field of power system control. The method comprises the following steps of: 1, measuring the real-time voltage, current, active power and reactive power of each bus node of a power system, and setting an automatic voltage control (AVC) instruction; 2, calculating the active power of each connecting line of the power system according to real-time data measured by the step 1 and network parameters of the power system; and 3, comparing the set active power of each connecting line with the active power, calculated by the step 2, of each connecting line, determining that the AVC instruction meets the power requirements of the power system if an absolute value of a difference value between the set active power of any connecting line and the active power calculated by the step 2 is less than a set power offset index, and determining that the AVC instruction does not meet the power requirements of the power system if the absolute value of the difference value between the set active power of the connecting line and the active power calculated by the step 2 is not less than the set power offset index. By the power checking method for a cooperative automatic generation control (AGC) and AVC system, the power checking of an AVC calculation result can more accurately control the AVC calculation result, and the safety and reliability of the power system can be improved.

Description

technical field [0001] The invention relates to the technical field of power system control, in particular to a power calibration method used in an AGC and AVC automatic coordination control system. Background technique [0002] In the current power system, Automatic Generation Control (AGC) and Automatic Voltage Control (AVC) have been widely used, and most of their research is based on active and reactive power decoupling assumptions, without considering the coordination problem between the two. However, the control objectives of the power system are diverse, and the control objects are scattered and complex. Although the active power and reactive power of the system are decoupled to a certain extent, they are not unrelated. The change of active output of the generator will inevitably affect the voltage quality and voltage stability of the system. At the same time, the adjustment of the transformer tap, the switching of the capacitor reactor, and the change of the genera...

AI Technical Summary

Problems solved by technology

Therefore, the automatic generation control system and the automatic voltage control system cannot be used as two completely independent closed-loop control systems, acting on an actual power system at the same time, nor can they be controlled simply by adopting the strategy of active power first and reactive power second

Otherwise, the interaction between AGC and AVC will inevitably affect the execution effect of their respective instructions, and may even cause security issues

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