微电网互联运行的分时优化与实时控制方法
发布时间:2019-03-29 07:49
【摘要】:将相邻的孤立微电网互联运行,可促进资源的时空互补与运行优化。提出互联微电网分时优化调度与实时协调控制相结合的运行方法,旨在降低系统发电成本,提高运行稳定性。在分时优化调度层面,基于超短期预测结果,以全系统发电成本最低为目标,提出考虑资源时空互补特性的优化调度方法;在实时协调控制层面,针对风、光、负荷的随机性而引起的功率波动问题,提出基于动态下垂控制的联络线定功率控制方法,使功率波动量得到经济合理分配。算例验证了分时优化调度方法可促进资源互补、降低运行成本,实时仿真结果验证了动态下垂控制策略可有效实现联络线定功率控制。
[Abstract]:Interconnected operation of adjacent isolated microgrids can promote space-time complementation and operational optimization of resources. A time-sharing optimal dispatching and real-time coordinated control method for interconnected microgrid is proposed in order to reduce the cost of power generation and improve the stability of operation. At the time-sharing optimal scheduling level, based on the ultra-short-term forecasting results, the optimal scheduling method considering the time-space complementarities of resources is proposed, aiming at the lowest generation cost of the whole system. At the level of real-time coordinated control, aiming at the problem of power fluctuation caused by the randomness of wind, light and load, a method of constant power control based on dynamic droop control is proposed, so that the power wave momentum can be allocated economically and reasonably. The example shows that the time-sharing optimal scheduling method can promote the complementarity of resources and reduce the operation cost. The real-time simulation results show that the dynamic droop control strategy can effectively realize the fixed power control of the contact line.
【作者单位】: 新能源电力系统国家重点实验室(华北电力大学);四川电力设计咨询有限责任公司;南方电网科学研究院;
【基金】:国家高技术研究发展计划项目(863计划)(2014AA052001)资助
【分类号】:TM732
[Abstract]:Interconnected operation of adjacent isolated microgrids can promote space-time complementation and operational optimization of resources. A time-sharing optimal dispatching and real-time coordinated control method for interconnected microgrid is proposed in order to reduce the cost of power generation and improve the stability of operation. At the time-sharing optimal scheduling level, based on the ultra-short-term forecasting results, the optimal scheduling method considering the time-space complementarities of resources is proposed, aiming at the lowest generation cost of the whole system. At the level of real-time coordinated control, aiming at the problem of power fluctuation caused by the randomness of wind, light and load, a method of constant power control based on dynamic droop control is proposed, so that the power wave momentum can be allocated economically and reasonably. The example shows that the time-sharing optimal scheduling method can promote the complementarity of resources and reduce the operation cost. The real-time simulation results show that the dynamic droop control strategy can effectively realize the fixed power control of the contact line.
【作者单位】: 新能源电力系统国家重点实验室(华北电力大学);四川电力设计咨询有限责任公司;南方电网科学研究院;
【基金】:国家高技术研究发展计划项目(863计划)(2014AA052001)资助
【分类号】:TM732
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