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事故备用分散转移的实现方式
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浦东供电公司,上海市 200122;4.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:

随着大量可再生能源并网和直流投运,导致系统惯性降低、事故备用短缺、低频风险增大。为了解决该问题,提出了事故备用分散转移(DTCR)的实现方式,能够支持发电侧事故备用向用电侧分散转移。首先,给出了DTCR的系统设计和实现思路。然后,提出了一种支持DTCR的毫秒级电器级负荷频率控制方法,其核心是三阶段响应策略:瞬时保守响应(ICR)、可靠延时响应(RLR)和最优动态控制(ODC)。为了兼顾ICR的瞬时性和准确性,提出了一种考虑电器优先级和功率差异的本地侧零通信主动响应形式。为了增强ICR的试错能力,提出了保守响应量的整定公式,能够利用最少负荷资源避免频率低于危险阈值,同时最小化误动作带来的频率冲击。最后,通过修改的IEEE 39节点系统仿真验证了该方法的有效性。DTCR方案有助于缓解事故备用负担和提升系统安全性。

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
张思远(1983—),男,硕士,高级工程师,主要研究方向:电力系统调控运行。E-mail:13875811030@163.com


Realization Mode 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), Shanghai 200240, China;2.Electric Power Dispatching and Control Center of State Grid Hunan Electric Power Company Limited, Changsha 410004, China;3.Pudong Power Supply Company of State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, China;4.State Key Laboratory of Control and Simulation of Power System and Generation Equipments (Tsinghua University), Beijing 100084, China

Abstract:

With the grid connection of large-scale renewable energy and DC operation, the inertia of the power system is reduced, the contingency reserve is of shortage, and the low-frequency risk increases. To solve these problems, this paper proposes the realization mode of decentralized transfer of contingency reserve (DTCR) to support the transfer of contingency reserve from the supply side to the demand side. Firstly, the system design and realization idea of DTCR are given. Then, a millisecond-level appliance-level load frequency control method supporting DTCR is proposed. The core of the method is a three-stage response strategy, including instantaneous conservative response (ICR), reliable latent response (RLR) and optimal dynamic control (ODC). A local-side zero-communication active response form considering the appliance priority and power difference is proposed to balance the instantaneity and accuracy of ICR. Moreover, the setting formula of conservative response capacity is proposed to enhance the trial-and-error ability of ICR, which can prevent frequency from falling below the dangerous threshold using the minimum load resources, while minimizing the frequency shock caused by misoperation. Finally, the effectiveness of the proposed method is verified by the simulation of a modified IEEE 39-bus system, which demonstrates that the proposed DTCR method is helpful to alleviate the contingency reserve burden and improve the system security.

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实现方式[J].电力系统自动化,2020,44(14):9-18. DOI:10.7500/AEPS20191027003.
XIAO Jucheng, HE Guangyu, ZHANG Siyuan, et al. Realization Mode of Decentralized Transfer of Contingency Reserve[J]. Automation of Electric Power Systems, 2020, 44(14):9-18. DOI:10.7500/AEPS20191027003.
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  • 收稿日期:2019-10-27
  • 最后修改日期:2020-03-04
  • 录用日期:
  • 在线发布日期: 2020-07-20
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