An Optimal Allocation Method for Dynamic Reactive Power Compensation Device in Receiving Power grid with High Proportion of New Energy access

At present, it is inevitable that the AC/DC trans regional transmission channel with large capacity to consume new energy will be connected to the receiving power grid, which also leads to the “hollow” trend of the receiving end, which may become a more common problem. Synchronous generator is the dynamic reactive power source with the largest basic capacity in the power system. Large scale clean energy access leads to the reduction of synchronous generator startup, as well as the reduction of reactive power supply of the system, which leads to voltage stability problems in the receiving power grid. This paper proposes A configuration method of dynamic reactive power compensation equipment. First, the power system simulation software is used to build the system simulation model, and use this model to determine the weak area of system voltage stability. Secondly, the optimization model of generator excitation voltage is built to improve the transient voltage stability of the system by optimizing the generator excitation voltage in the system. Then, based on the results of the generator excitation voltage optimization model, the simulation model generator excitation reference voltage is modified. The modified simulation model and the dynamic reactive power compensation effect index are used to configure the dynamic reactive power compensation device in a time domain simulation cycle to maximize the system voltage stability, improve the voltage quality and minimize the investment. Finally, an example is given to verify the validity and accuracy of the proposed method.