| With the continuous improvement of the demand of power users and the main grid of power,the power system faces greater challenges in terms of safe and stable operation.In the power system.In the power system,voltage is the main indicator for assessing power quality.Voltage and reactive power will not only affect the stable operation and safety margin of the power system,but also affect the experience and requirements of millions of electrical users in daily life.Therefore,it is of great significance to ensure the stable operation of the voltage in the main grid and the sub-divided area of the power system,to improve the user experience in the context of the current deepening power system reform,to meet the demand for electricity,and to ensure the safe and stable operation of the power system.Based on the substation voltage and reactive power control strategy,this paper expounds the relationship between voltage and reactive power in power system,and analyzes the technical means of substation voltage and reactive power control at the principle level.Secondly,by analyzing the working principle of voltage and reactive power regulating equipment,we focus on the widely applied nine-zone voltage and reactive power control strategy.Then,based on the problems found in the study and the actual power production,the traditional voltage control strategy is improved and optimized,and an inverse time-limited voltage control strategy is proposed.Then the basic model of substation-side power network structure is built on MATLAB/Simulink simulation platform,reasonable electrical components and simulation test parameters are set up,and the optimized integrated control strategy of reverse-time voltage and reactive power is applied.By observing the output of the simulation model,the operation characteristics of the voltage and reactive power control strategy are summarized to verify its effectiveness and feasibility.Finally,combining with the actual production data of the substation,the comparison of the optimization before and after further proves that the optimized control strategy can relatively effectively guarantee the selectivity of the whole network power station adjustment,reasonably reduce the number of equipment actions. |
