| 基于两阶段线性模型的微电网实时优化调度方法 |
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| 引用本文： | 陈卫东,梁朔,肖园园,郭敏.基于两阶段线性模型的微电网实时优化调度方法[J].现代电力,2018,35(5):24-33. |
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| 作者姓名： | 陈卫东 梁朔 肖园园 郭敏 |
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| 作者单位： | 广西电网有限责任公司电力科学研究院,广西南宁 530023 |
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| 基金项目： | 中国南方电网公司科技项目(GXKJXM2016 0317) |
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| 摘 要： | 微电网实时优化调度作为保证微电网安全高效运行的关键技术,工程中要求可以快速可靠地取得最优解。针对这一问题,详细分析了微电网实时调度各状态空间下应采取的控制策略;提出了遵循储能SOC日前计划的“等效供电成本最小”和实际供电成本最小的两阶段线性模型;并建立了储能系统充放电引导系数模型,以控制储能系统的充放电量;最后,通过对微电网各实时状态进行优化调度仿真和有/无储能SOC日前计划情况下的实时调度仿真实验,验证了该方法能够尽量遵循储能日前SOC计划,给出满足各状态下实时调度策略的优化调度方案,并能有效降低微电网供电总成本。
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| 关 键 词： | 微电网 实时优化调度 状态空间 两阶段线性模型 充放电引导系数模型 |
| 收稿时间： | 2017-10-30 |
Real-time Optimal Dispatch Method of Microgrid Based on Two-stage Linear Model |
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| Affiliation: | Electric Power Research Institute of Guangxi Power Grid Co., Ltd., Nanning 530023, China |
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| Abstract: | As a key technology to ensure the safe and efficient running of microgrid, microgrid real-time optimal dispatch is applied to obtain the optimal solution quickly and reliably in the real project. So the microgrid real-time dispatch strategy in every state space is analyzed in detail, and a two-stage linear model that can achieve minimum equivalent power supply cost and minimum actual power supply cost following day-ahead energy storage SOC plan is proposed. And the charge and discharge guidance coefficient model of energy storage system is established to control its charge and discharge capacity. In the end, through the simulation of microgrid real-time optimal dispatch in every state space and the simulation test of real-time scheduling with / without day-ahead SOC plan, it is verified that proposed method can follow the energy storage SOC plan as far as possible to obtain the real-time scheduling strategy in every state, and effectively reduce the total cost of microgrid power supply. |
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