含分布式固体电储热的电热联合系统安全评估及预防控制方法

doi:10.12204/j.issn.1000-7229.2022.03.011

电力建设 ›› 2022, Vol. 43 ›› Issue (3): 100-111.doi: 10.12204/j.issn.1000-7229.2022.03.011

• 面向新型电力系统的储能技术研究及应用·栏目主持李建林教授· • 上一篇下一篇

含分布式固体电储热的电热联合系统安全评估及预防控制方法

纪慧超¹^,², 王海鑫¹(), 杨俊友¹, 刘沐易¹, 张世宇¹

1.沈阳工业大学电气工程学院,沈阳市 110870
2.东北电力大学自动化工程学院,吉林省吉林市 132012

收稿日期:2021-10-21 出版日期:2022-03-01 发布日期:2022-03-24
通讯作者: 王海鑫 E-mail:haixinwang@sut.edu.cn
作者简介:纪慧超(1987),男,博士研究生,主要研究方向为电热联合系统安全分析;
杨俊友(1963),男,博士,二级教授,博士生导师,主要研究方向为智能电网;
刘沐易(1997),男,硕士研究生,主要研究方向为智能电网;
张世宇(1997),男,硕士研究生,主要研究方向为智能电网。
基金资助:
辽宁省科协科技创新智库项目(LNKX2020ZD03);辽宁省教育厅科学研究经费项目(LQGD2019005);辽宁省博士科研启动基金(2020-BS-141)

Security Assessment and Preventive Control Method ofCombined Electricity and Heat Systems with DistributedSolid Electric Thermal Storage

JI Huichao¹^,², WANG Haixin¹(), YANG Junyou¹, LIU Muyi¹, ZHANG Shiyu¹

1. School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China
2. School of Automation Engineering, Northeast Electric Power University, Jilin 132012, Jilin Province, China

Received:2021-10-21 Online:2022-03-01 Published:2022-03-24
Contact: WANG Haixin E-mail:haixinwang@sut.edu.cn
Supported by:
Liaoning Association for Science and Technology Innovation Think Tank Project(LNKX2020ZD03);Scientific Research Fund of Liaoning Provincial Education Department(LQGD2019005);Liaoning Province Doctoral Start-up Foundation(2020-BS-141)

摘要/Abstract

摘要：

由于分布式固体电储热(distributed solid electric thermal storage, DSETS)面临多种环境气温因素影响,对其实施能量平移调度时可能出现不受控情况,从而导致含DSETS的多能源系统运行面临安全风险。为解决该问题,提出一种含DSETS的电热联合系统安全评估及预防控制方法。首先,建立一个两阶段优化模型:第一阶段以系统运行成本最小为目标,针对含DSETS的电热联合系统建立预想事故集,模拟DSETS能量转移过程中负荷需求突然增加和支路N-1预想事故扰动,并利用所提的支路重载评估指标,评价故障后系统的安全性;当第一阶段优化结果出现支路重载情况时,进入第二阶段采取预防控制,本阶段以系统各单元有功调节量最小为目标,对重载支路进行校正,通过调节系统各机组出力,使支路有功潮流降低至安全裕度之下。最后,通过对比预防控制前、后系统的安全性,验证预防控制模型及评估指标的有效性。上述2种预想事故导致支路重载指标分别为2.82%和6.96%,采取预防控制后,支路无重载。

关键词: 分布式固体电储热(DSETS), 支路重载, N-1, 评估指标, 预防控制

Abstract:

Since the distributed solid electric thermal storage (DSETS) is affected by various environmental temperature factors, the schedule of energy transfer may be uncontrolled, which causes the security risks in the operation of multi-energy systems with DSETS. Thus, to tackle this problem, a security assessment and preventive control method of combined electricity and heat systems with DSETS is proposed. Firstly, a two-stage optimization model is established. The objective of the first stage is to minimize the system operation cost. A contingency set is established for the combined electricity and heat systems with DSETS. The contingency set is used to simulate the disturbance of the DSETS’ load increase and the branch N-1, and the proposed evaluation index of branch overload is applied to evaluate the security of the system after a contingency. The preventive control is adopted in the second stage when the branch is overloaded in the first stage of optimization. The objective of the second stage is to minimize the active power adjustment of each unit of the system, and the overload branch is corrected. The active power flow of the branch is reduced below the safety margin by regulating the output of each unit of the system. Finally, by comparing the safety of systems with or without the preventive control, the validity of the preventive control model and evaluation index is verified. The overload indices of the above two contingencies are 2.82% and 6.96%, respectively, and the overload of a branch is corrected by adopting the preventive control.

Key words: distributed solid electric thermal storage (DSETS), branch overload, N-1, evaluation index, preventive control

中图分类号:

TM734

纪慧超, 王海鑫, 杨俊友, 刘沐易, 张世宇. 含分布式固体电储热的电热联合系统安全评估及预防控制方法[J]. 电力建设, 2022, 43(3): 100-111.

JI Huichao, WANG Haixin, YANG Junyou, LIU Muyi, ZHANG Shiyu. Security Assessment and Preventive Control Method ofCombined Electricity and Heat Systems with DistributedSolid Electric Thermal Storage[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(3): 100-111.

图/表 16

图1 含DSETS的电热联合系统结构

Fig.1 Structure of combined electricity and heat system with DSETS

图2 含DSETS电热联合系统安全评估及预防控制框架

Fig.2 The security assessment and preventive controlframework of combined electricity and heatsystem with DSETS

图3 电热联合系统安全评估及预防控制方法流程

Fig.3 Process of the security assessment and preventivecontrol method of combined electricity and heat system

图4 电热联合系统仿真结构

Fig.4 Simulation structure of combinedelectricity and heat system

图5 电热负荷及预测风电功率曲线

Fig.5 Curves of electric heat load and wind power prediction

表1 TPP仿真参数

Table 1 Simulation parameters of TPPs

表2 CHP仿真参数

Table 2 Simulation parameters of CHPs

表3 HA仿真参数

Table 3 The simulation parameters of Has

表4 EES仿真参数

Table 4 The simulation parameters of EES

表5 DSETS仿真参数

Table 5 Simulation parameters of DSETS

图6 4种DSETS类型用户预测功率

Fig.6 Power prediction of four DSETSs customers

表6 工况1下重载支路预防控制结果对比

Table 6 Comparison of preventive control results ofbranch overload under the operation condition 1

表7 工况1下预防控制机组功率调节量

Table 7 Power regulation of preventive controlunder the operation condition 1

图7 预防控制热功率调度结果对比

Fig.7 Comparison of scheduled results ofpreventive control heat power

表8 工况2下重载支路预防控制结果对比

Table 8 Comparison of preventive control results ofbranch overload under the operation condition 2

表9 工况2下预防控制机组功率调节量

Table 9 Power regulation of preventive controlunder the operation condition 2

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含分布式固体电储热的电热联合系统安全评估及预防控制方法

Security Assessment and Preventive Control Method ofCombined Electricity and Heat Systems with DistributedSolid Electric Thermal Storage

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