基于全成本电价的安全约束经济调度

Security Constrained Economic Dispatch Based on Total Cost Price

在智能电网的研究中,人们通常关注电源与负荷的互动以消纳更多的新能源,而电源、负荷对电网资源的利用程度则考虑较少,未能充分发掘源–网–荷三者互动的深层次效益与价值。为此,提出基于全成本电价的电源、电网、负荷的互动模式与方法。对于电源侧,在优化经济调度时考虑输电成本的影响;对于负荷侧,计算基于潮流追踪法的全成本电价,明确负荷对电源和电网资源的使用情况,体现"谁受益,谁承担成本"的原则,并引入需求侧响应体现全成本电价的意义和价值。基于IEEE30节点系统的算例分析验证了文中方法能够根据用户对电网资源利用程度的大小合理地分摊电网的成本,从而提升电网投资与运行的高效性、公平性、有序性与安全性。

In the research of smart grid, people generally pay more attention to the interaction between power source as a means to accommodate more renewable energy, than the ＂extent of use＂ of the grid by power source and loads. The potential benefit and value of the interaction among power source, grid and load has not been fully developed. An interaction pattern and method of power source, grid and load based on total cost price （TCP） was proposed. For the source side, transmission cost was considered in the economic dispatch. For the load side, a power flow trace method based on TCP was proposed to reveal how the load uses the source and grid. The method reflects the principle of ＂he who reaps the benefit bears the cost＂. Demand response was also considered to reflect the meaning and value of TCP. Based on the IEEE 30-bns system, the numerical experiment results show that the proposed method can allocate transmission costs to users according to their ＂extent of use＂ of the grid. Furthermore the method promotes the high effectiveness, fairness, orderliness and security in power system investment and operations.