一种电网友好型智慧小区水电联供系统优化调度

Optimal Dispatch of a Grid Friendly Smart Community Water Electricity Combined Supply System

针对光伏建筑一体化小区中富余能源低价上网导致居民用电经济性欠优,以及与外电网交换功率不够平滑的问题,提出一种电网友好型智慧小区水电系统联供机制。首先,提出小区居民和物业供水公司联合用电的新模式,并引入核仁分摊法合理分配联盟体共同收益。进而,建立详细的水电联供系统(water electricity combined supply system,WECSS)模型,以精细化分析其多时间尺度响应性能。在此基础上,以WECSS购电成本最小化和对外交换功率波动性最小为目标,设计一种实时滚动的电气–水力双层联合调度方案。最后,提出近似线性化处理和水力侧–电力侧问题交互迭代的算法,兼顾了优化模型在求解速度和结果精确性上的双重需求。仿真结果表明,相对于单一主体用电的模式,所提的电网友好型智慧小区WECSS能够提高小区居民和物业供水公司的用电经济性,同时降低大电网运行的压力,使得参与多方共同受益。为新能源消纳和微网综合能源合理利用问题的解决提供了一个新的视角。

To solve problems of resident's poor economy and unsmooth power exchange from the surplus energy connected grid,a grid friendly smart communities water electricity combined supply mechanism was proposed.Firstly,putting forward the new mode of community residents and property water supply company consuming power,nucleolar allocation method was introduced to reasonably allocate the common benefits of the alliance.Moreover,to analyze the response performance on multi-time scales,a detailed water electricity combined supply(WECSS)model was established.On the basis of this,taking minimizing the power purchase cost of WECSS and power fluctuation of external switching power as a goal,a real-time scrolling electricity and water two-layer combined dispatch method was designed.Lastly,the solution speed and accuracy of the model were taken into account by the proposed approximate linearization and the interactive iteration algorithm of the hydraulic side-power side.The simulation results verify that compared with the mode of a single subject,WECSS proposed in this paper can improve the electricity economy of residential residents and property water supply companies,and reduce the pressure of the operation of large power grids,so as to benefit from the participation of many parties.The paper provides a new vision of solving the problem of new energy consumption and rational utilization of comprehensive energy in microgrid.