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事故备用分散转移的效益评估
作者:
作者单位:

1.电力传输与功率变换教育部重点实验室(上海交通大学),上海市200240;2.国网湖南省电力有限公司电力调度控制中心,湖南省长沙市410004;3.国网上海市电力公司电力调度控制中心,上海市200122;4.国家电网有限公司国家电力调度控制中心, 北京市100031;5.电力系统及发电设备控制和仿真国家重点实验室(清华大学),北京市100084

摘要:

由于可再生能源装机比例增大,传统机组预留大量事故备用,运行经济性显著降低。为此,首先提出了事故备用分散转移(DTCR)的概念:将原本集中在发电侧和电网侧的部分事故备用向用电侧分散转移。然后,提出了DTCR的效益评估方法和参考指标:观测到DTCR的边际效益递减现象可作为选取合理分散备用容量的参考;提出经济负载率阈值,可用于定量评估产生DTCR效益的经济负载率区间。最后,结合14节点至300节点等5个IEEE标准系统,并计及风机和需求响应的影响,分析了DTCR的效益大小、产生机理、影响因素和适用场景。结果表明,DTCR能够在日常调度中持续产生经济效益,优化潮流分布和降低网损。

关键词:

基金项目:

国家自然科学基金资助项目(51877134)。

通信作者:

何光宇(1972—),男,通信作者,教授,博士生导师,主要研究方向:智能电网、电力系统状态估计、用户侧能量管理系统、需求响应等。E-mail:hhhxxjj@163.com

作者简介:

肖居承(1995—),男,硕士研究生,主要研究方向:智能电网、需求侧管理、电力系统运行与控制。E-mail:xiaojucheng@sjtu.edu.cn


Benefit Assessment of Decentralized Transfer of Contingency Reserve
Author:
Affiliation:

1.Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education (Shanghai Jiao Tong University), Shanghai200240, China;2.Electric Power Dispatching and Control Center of State Grid Hunan Electric Power Company Limited, Changsha410004, China;3.Electric Power Dispatching and Communication Center of State Grid Shanghai Municipal Electric Power Company, Shanghai200122, China;4.National Electric Power Dispatching and Control Center of State Grid Corporation of China, Beijing100031, China;5.State Key Laboratory of Control and Simulation of Power System and Generation Equipments (Tsinghua University), Beijing100084, China

Abstract:

Due to the increasing proportion of the installed renewable energy capacity, conventional generation units have to keep massive contingency reserves, which leads to poor economy of unit operation. To solve this issue, this paper proposes the concept of decentralized transfer of contingency reserve (DTCR), which refers to transferring part of the centralized contingency reserve from the supply side to the demand side. Then, the benefit assessment method and reference indicators of DTCR are proposed. The observed diminishing marginal benefit (DMB) of DTCR serves as a reference to select a reasonable capacity of decentralized reserve. The economic load rate threshold (ELRT) is proposed to quantitatively assess the economic load rate range of producing DTCR benefits. Finally, the benefit, its mechanism, impact factors and application scenarios of DTCR are analyzed using 5 IEEE standard systems with 14 buses to 300 buses and considering wind power generators and demand response. Results indicate that the proposed DTCR system can continuously generate economic benefits, optimize power flow distribution, and reduce network loss in daily dispatching.

Keywords:

Foundation:
This work is supported by National Natural Science Foundation of China (No. 51877134).
引用本文
[1]肖居承,何光宇,张思远,等.事故备用分散转移的效益评估[J].电力系统自动化,2020,44(13):9-16. DOI:10.7500/AEPS20191027004.
XIAO Jucheng, HE Guangyu, ZHANG Siyuan, et al. Benefit Assessment of Decentralized Transfer of Contingency Reserve[J]. Automation of Electric Power Systems, 2020, 44(13):9-16. DOI:10.7500/AEPS20191027004.
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  • 收稿日期:2019-10-27
  • 最后修改日期:2020-03-04
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  • 在线发布日期: 2020-07-03
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