CAJ | 학술논문

在多目标优化中,帕累托前沿解集提供了目标函数之间非常有价值的妥协信息,是运行人员进行决策的基础,而NBI(normal boundary intersection)法是均匀产生帕累托前沿解集的有效方法.文中将NBI法引入有功出力优化中,并推导了基于NBI法的置换度指标求解表达式.该表达式可以直观地反映发电机出力成本与安全裕度之间的置换关系,为决策者确定优化方案提供参考依据.算例仿真结果说明了该方法的有效性.
재다목표우화중,파루탁전연해집제공료목표함수지간비상유개치적타협신식,시운행인원진행결책적기출,이NBI(normal boundary intersection)법시균균산생파루탁전연해집적유효방법.문중장NBI법인입유공출력우화중,병추도료기우NBI법적치환도지표구해표체식.해표체식가이직관지반영발전궤출력성본여안전유도지간적치환관계,위결책자학정우화방안제공삼고의거.산례방진결과설명료해방법적유효성.
In multi-objective optimization, Pareto front can offer valuable tradeoff information between objectives, which is the basis for decision-making. Normal Boundary Intersection (NBI) is an effective method for evenly generating Pareto optimal solutions. In this paper, NBI method is introduced into generation dispatch, and another valuable index, i.e. degree of substitute index. Its expression is derived based on the NBI method. This index can intuitively reflect the substitute relation between the generation cost and loading margin, providing the decision-maker with important reference to determine the optimization scheme. Simulation results of a numerical example illustrate the validity of the method.