CAJ | 학술논문

针对独立运行模式下的微网能量管理问题，提出微网实时能量优化调度方法。该方法将作为压频控制单元的储能装置的能量状态划分为4个区间，并缩减作为压频控制单元的可控型微电源的基点运行功率范围，以确保压频控制单元有足够功率调节裕量吸纳微网内的非计划瞬时波动功率。根据实时监测到的储能装置能量状态所处的不同区间及系统净负荷功率大小，采用不同的调度策略，并引入负荷竞价策略，增加了切负荷和卸荷作为功率调节手段。提出运行调度策略，建立负荷优化分配模型与负荷可中断优化模型。该方法不仅能实现独立运行的微网可靠、经济运行，还可减小微网对储能装置的容量配置需求。通过算例验证所提出方法的有效性。
침대독립운행모식하적미망능량관리문제，제출미망실시능량우화조도방법。해방법장작위압빈공제단원적저능장치적능량상태화분위4개구간，병축감작위압빈공제단원적가공형미전원적기점운행공솔범위，이학보압빈공제단원유족구공솔조절유량흡납미망내적비계화순시파동공솔。근거실시감측도적저능장치능량상태소처적불동구간급계통정부하공솔대소，채용불동적조도책략，병인입부하경개책략，증가료절부하화사하작위공솔조절수단。제출운행조도책략，건립부하우화분배모형여부하가중단우화모형。해방법불부능실현독립운행적미망가고、경제운행，환가감소미망대저능장치적용량배치수구。통과산례험증소제출방법적유효성。
Aiming at energy management of microgrid in standalone operation mode, a real-time optimal energy dispatch method was proposed in this paper. In this method, the state of energy （SOE） of storage device was divided into four operating levels, and the range of primary operating power point of V-f controlled micro-sources was reduced, in order to ensure V-f controlled units with enough power regulating margin to absorb non-planed instantaneous power in microgrid. Different dispatch strategies were used according to the net load powerand the SOE level of storage device. Load bidding strategy was used, while load shedding and excess-power dissipating were considered in microgrid operation. Dispatch strategies for standalone microgrid were proposed, while the optimal load distribution model and optimal interruptible load model were demonstrated in this paper. The proposed method could not only improve the reliability and economy of standalone microgrid operation, but also reduce the configuration capacity requirements of storage device. Case study results indicate the effectiveness of the microgrid dispatch model proposed.