CAJ | 학술논문

基于多直流馈入短路比，分析了限制短路电流措施对多馈入短路比影响，提出了能反映多直流馈入受端电压支撑能力、限制短路电流方案的经济性和控制效果的目标函数，构建了多直流馈入电网限制短路电流方案优化的数学模型。通过支路筛选策略进行决策变量降维，采用快速非支配排序遗传算法(NSGA-Ⅱ)进行多目标优化，找出 Pareto 最优的限制短路电流方案。通过实际电网的仿真结果表明所提出的方法具有较好的适用性，能满足电网规划要求。
기우다직류궤입단로비，분석료한제단로전류조시대다궤입단로비영향，제출료능반영다직류궤입수단전압지탱능력、한제단로전류방안적경제성화공제효과적목표함수，구건료다직류궤입전망한제단로전류방안우화적수학모형。통과지로사선책략진행결책변량강유，채용쾌속비지배배서유전산법(NSGA-Ⅱ)진행다목표우화，조출 Pareto 최우적한제단로전류방안。통과실제전망적방진결과표명소제출적방법구유교호적괄용성，능만족전망규화요구。
Based on the multi-infeed short circuit ratio,the influence on multi-infeed short circuit ratio caused by current limiting measures is analyzed,and a mathematical model of multi-objective optimization for short-circuit current limitation schemes is developed.The objective functions considering the voltage support ability,the costs of limitation schemes and short-circuit capacity margin are presented.The procedure of optimizing short-circuit current limitation schemes in multi-infeed DC systems is presented as follows.Firstly,using a branch screening strategy to reduce the dimensions of the decision variables.Then,the nondominant sorting genetic algorithm Ⅱ is used to find the Pareto optimal solutions.Simulation results of actual power grid planning show that the model proposed has good applicability.