Wide-area reactive optimal running method for power distribution network

Abstract

The invention relates to a wide-area reactive optimal running method for a power distribution network and belongs to the technical field of reactive compensation of the power distribution network of a power system. The method comprises the following steps: utilizing a computer and a program to input the basic data of the power distribution network and each reactive compensation device of the power distribution network; calculating a compensation scope and a prior level of each reactive compensation device; calculating a switching capacity of each reactive compensation device according to the compensation scope of each reactive compensation device and real-time measuring information of a root node and each compensation node of the power distribution network; and controlling each capacitor to switch. According to the method provided by the invention, the voltage reactive running condition of the whole power distribution network is fully considered; the use ratio of the compensation device is greatly increased; the power loss and voltage loss of the power distribution network are reduced; the voltage quality of the power distribution network is increased; the running of the electric equipment under a rated condition is ensured; and the social and economic benefits are obvious. The wide-area reactive optimal running method is widely applied to the voltage reactive optimal running and control of the power distribution network of the power system.

Description

Technical field [0001] The invention is the field of non -contribution compensation technology for power system distribution grids, which specifically involves optimized operation methods for power system distribution grids. Background technique [0002] The distribution network is an important link between the power system and the user. It has a large coverage area and a large number of equipment. It is an important part of the power system.Improving the voltage quality of the distribution network and reducing the operational loss of the distribution network is of great significance for improving the quality of power supply and ensuring the high -quality economic operation of the power system.Revitalizing compensation is one of the effective measures to improve the voltage quality of the distribution network and reduce the operational loss of the distribution network. [0003] The power -free optimization operation of the transmission grid is usually based on the trendy equation...

AI Technical Summary

Problems solved by technology

The main disadvantage of the current switching method of reactive power compensation devices in the distribution network is that it can only automatically switch the compensation capacity of the compensation capacitor according to the reactive power load balance of each distribution transformer, and only realize the partial area of ​​each distribution transformer and the following power grid. The reactive power balance of the distribution network cannot control the switching of reactive power compensation capacity from the overall situation of the reactive power load of the distribution network

Since the variation rules of distribution transformer loads (including reactive loads) in the distribution network are not the same, the current method of switching reactive power compensation devices in the distribution network does not fully utilize the compensation capacitors, and it is difficult to ensure the overall no-power load of the distribution network. power balance, thereby affecting the high-quality economic operation of the distribution network

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