Optimization method for comprehensive automation system VQC of transformer station

Abstract

The invention relates an optimization method for a comprehensive automation system VQC of a transformer station, which optimizes a mode of main transformer on-load voltage regulation and capacitor comprehensive control and a control mode of main transformer on-load voltage regulation automatic control and capacitor disuse in control modes of the comprehensive automation system VQC of the transformer station. In the mode of the main transformer on-load voltage regulation and capacitor comprehensive control, a control strategy on the premise of priority control of voltage removes a tap lifting instruction of an eighth region to prevent the repeated shock phenomenon of a first region and the eighth region during control and ensure the voltage is not offset; and in the control mode of the main transformer on-load voltage regulation automatic control and the capacitor disuse, a voltage region is divided into an upper region, a middle region and a lower region, the middle region is recognized as a qualified region when the voltage falls on the middle region, and the regulation is no more performed so as to eliminate the inter-region phenomenon and solve the problems of repeated regulation and fluctuation of the voltage caused by the inter-region phenomenon.

Description

technical field [0001] The invention relates to an optimization method, in particular to an optimization method for a substation comprehensive automation system VQC (voltage reactive power control). technical background [0002] At present, the control methods for substation VQC (voltage reactive power control) include the following: [0003] Method 1: On-load voltage regulation of the main transformer and comprehensive control of capacitors; [0004] Method 2: automatic control of the main transformer on-load voltage regulation, and the capacitor is disabled; [0005] Mode 3: Manual control of main transformer on-load voltage regulation, automatic control of capacitors; [0006] Mode 4: main transformer on-load automatic control, capacitor timing control; [0007] Mode 5: Main transformer on-load voltage regulation manual control, capacitor timing control. [0008] For the first method of VQC (voltage reactive power control), that is, the main transformer on-load voltag...

AI Technical Summary

Problems solved by technology

Obviously, voltage imbalance will lead to a decline in the statistical index of "voltage qualification rate"

[0010] According to the typical 17-zone control method, we can see that in the 8th zone, the command of cutting the capacitor and raising the tap is carried out, but it is precisely because of the command of the 8th zone’s rising tap that the actual system voltage is between the 1st zone and the 8th zone. At the same time, we also believe that the voltage in Zone 8 is already an ideal voltage value, and there is no need to adjust the voltage. The blind pursuit of reactive power will cause an impact on the system voltage

Images