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A contingency-aware method for N-2 security-constrained transmission expansion planning

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Journal of Modern Power Systems and Clean Energy 2019年第5期7卷 1008-1019页

作者： dundun liu Lu liu Haozhong CHENG Key Laboratory of Control of Power Transmission and Conversion Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China

In this paper,a novel contingency-aware method for N-2 security-constrained transmission expansion planning is *** ensure that the transmission construction plan satisfies the N-2 security criterion,the proposed method takes advantage of the adjustable robust optimization(ARO)framework and upgrades *** construct a discrete uncertainty set in which component failures are treated as uncertain events that are handled as binary *** addition to the failure of existing lines and generators,we explicitly model the failure of candidate *** proposed model comprises a master problem that makes the transmission construction decision,and a series of subproblems that can detect not only the worst contingency,but also the potential *** studies on the IEEE RTS 24-bus and IEEE 118-bus test systems are carried out to validate the effectiveness of the proposed *** with the deterministic method and ARO method in the literature,the proposed method has higher computational efficiency.

关键词： Contingency N-2 security Robust optimization Transmission expansion planning

An Extended DC Power Flow Model Considering Voltage Magnitude

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Journal of Modern Power Systems and Clean Energy 2021年第3期9卷 679-683页

作者： dundun liu Lu liu Haozhong Cheng Shenxi Zhang Jieqing Xin Laboratory of Control of Power Transmission and Conversion Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China

A quasi-linear relationship between voltage angles and voltage magnitudes in power flow calculation is *** accurate estimation of voltage magnitudes can be provided by the quasi-linear relationship when voltage angles are derived by classical DC power *** on the quasi-linear relationship,a novel extended DC power flow(EDCPF)model is proposed considering voltage *** is simple,reliable and accurate for both distribution network and transmission network in normal system operation *** accuracy of EDCPF model is verified through a series of standard test systems.

关键词： DC power flow distribution network transmission network voltage magnitude linear power flow model

Frequency-constrained Co-planning of Generation and Energy Storage with High-penetration Renewable Energy

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Journal of Modern Power Systems and Clean Energy 2021年第4期9卷 760-775页

作者： Chengming Zhang Lu liu Haozhong Cheng dundun liu Jianping Zhang Gang Li Key Laboratory of Control of Power Transmission and Conversion Shanghai Jiao Tong UniversityShanghaiChina East China Branch of State Grid Corporation ShanghaiChina

Large-scale renewable energy integration decreases the system inertia and restricts frequency regulation. To maintain the frequency stability, allocating adequate frequency-support sources poses a critical challenge to planners. In this context, we propose a frequency-constrained coordination planning model of thermal units, wind farms, and battery energy storage systems (BESSs) to provide satisfactory frequency supports. Firstly, a modified multi-machine system frequency response (MSFR) model that accounts for the dynamic responses from both synchronous generators and grid-connected inverters is constructed with preset power-headroom. Secondly, the rate-of-change-of-frequency (ROCOF) and frequency response power are deduced to construct frequency constraints. A data-driven piecewise linearization (DDPWL) method based on hyperplane fitting and data classification is applied to linearize the highly nonlinear frequency response power. Thirdly, frequency constraints are inserted into our planning model, while the unit commitment based on the coordinated operation of the thermal-hydro-wind-BESS hybrid system is implemented. At last, the proposed model is applied to the IEEE RTS-79 test system. The results demonstrate the effectiveness of our co-planning model to keep the frequency stability.

关键词： Battery energy storage system(BESS) data-driven piecewise linearization generation planning multi-machine system frequency response unit commitment wind farm

Accommodating Uncertain Wind Power Investment and Coal-fired Unit Retirement by Robust Energy Storage System Planning

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CSEE Journal of Power and Energy Systems 2022年第5期8卷 1398-1407页

作者： dundun liu Shenxi Zhang Haozhong Cheng Lu liu Zheng Wang Da Sang Ruijin Zhu Key Laboratory of Control of Power Transmission and Conversion Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China State Grid East China Branch Shanghai 200002China State Grid Shanghai Municipal Electric Power Company Shanghai 200002China

Increasing wind power integration and coal-fired unit retirements increases the strain on the power system’s spinning reserve and increases the pressure on peak *** the ability to stock extra power generation and supply the peak load,the energy storage system(ESS)can alleviate the rising demand on the spinning reserve and play an increasingly important role in the power *** this paper,a trilevel robust ESS planning model is proposed to accommodate uncertain wind power investment as well as coal-fired unit *** upper-level of this model is to determine the planning scheme of ESSs,which iteratively takes the worst-case scenario of wind power investment and coal-fired unit retirement into *** middle-level and lower-level of this model are to make the optimal daily economic dispatch under the worst-case realizations of *** derive an equivalent reformulation of the proposed robust ESS planning model and solve it with a dual column-and-constraint generation *** studies are conducted using the IEEE RTS-79 *** results demonstrate the superiority of the proposed planning method in comparison with other ***,the effects of the capital cost of ESS,the expected proportion of wind power,and the uncertainty budget on the development of ESS are *** the uncertainties of unit retirement and wind power investment into consideration achieves a better trade-off between the ESS investment cost and the operational cost.

关键词： Coal-fired unit retirement energy storage system planning robust optimization uncertainty wind power

高比例可再生能源接入下考虑输配协同的输电网规划测试系统

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电力系统自动化 2021年第11期45卷 19-27页

作者：李傲伟柳璐程浩忠刘盾盾张宁肖峻电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市200240 电力系统及大型发电设备安全控制和仿真国家重点实验室(清华大学) 北京市100084 清华大学电机工程与应用电子技术系北京市100084 智能电网教育部重点实验室(天津大学) 天津市300072

以风光为主的高比例可再生能源通过不同电压等级接入电网,输电网与配电网之间的互济需求增强,促使输电网规划考虑与配电网协同,然而协同规划却面临着缺乏测试系统的难题。因此,构建了一个高比例可再生能源接入下考虑输配协同的输电网规... 详细信息

以风光为主的高比例可再生能源通过不同电压等级接入电网,输电网与配电网之间的互济需求增强,促使输电网规划考虑与配电网协同,然而协同规划却面临着缺乏测试系统的难题。因此,构建了一个高比例可再生能源接入下考虑输配协同的输电网规划测试系统HRPTD-20,描述了系统的源网荷基本特性并给出了相关数据。系统包含2个区域、3个电压等级,以及3种传统和3种未来典型配电网结构场景,可再生能源装机容量占比接近55%。基于考虑输配协同的输电网规划模型求解,给出了测试系统的基准规划方案。对比分析验证了该测试系统可以用于输配电网协同规划,有助于提高可再生能源通过不同电压等级接入输配电网的消纳能力。

关键词：输配协同输电网规划测试系统可再生能源分布式优化

基于广义主从分裂理论与配电网相协同的输电网规划方法

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中国电机工程学报 2021年第17期41卷 5856-5865页

作者：刘盾盾柳璐程浩忠李傲伟励刚张啸虎电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市闵行区200240 国家电网有限公司华东分部上海市浦东新区200002

基于广义主从分裂理论提出与配电网相协同的输电网规划方法。以输电网投资成本、输电网运行成本与配电网运行成本之和最小为目标函数,考虑配电网网络约束及分布式电源,基于Karush-Kuhn-Tucker(KKT)最优性条件对输配耦合约束条件解耦,将... 详细信息

基于广义主从分裂理论提出与配电网相协同的输电网规划方法。以输电网投资成本、输电网运行成本与配电网运行成本之和最小为目标函数,考虑配电网网络约束及分布式电源,基于Karush-Kuhn-Tucker(KKT)最优性条件对输配耦合约束条件解耦,将原问题分解为输电网优化子问题与配电网优化子问题。引入计及电压幅值的直流潮流方程,使得在基于直流潮流的输电网规划模型中也能计算电压幅值,从而支撑输配协同优化计算时的变量交互。采用Benders分解混合异质分解算法的有效求解策略。以中国某省级输配电网为算例,对比传统输电网规划方法,验证了所提规划方法的有效性与优越性。

关键词：输电网规划输配协同高比例可再生能源主从分裂

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不确定因素耦合下输电网风险规划研究综述

电力自动化设备 2018年第7期38卷 11-20页

作者：刘佳程浩忠刘盾盾姚良忠曾平良马则良上海交通大学电力传输与功率变换控制教育部重点实验室上海200240 中国电力科学研究院北京100192 国家电网公司华东分部上海200120

传统的确定性风险分析方法由于存在多种弊端,难以适应新形势下的输电网规划和方案评估,为了更加合理地管控输电网风险水平,基于概率性分析方法对输电网风险规划和评估等研究成果进行了综述。介绍了输电网中的安全、设备、结构、管理和... 详细信息

传统的确定性风险分析方法由于存在多种弊端,难以适应新形势下的输电网规划和方案评估,为了更加合理地管控输电网风险水平,基于概率性分析方法对输电网风险规划和评估等研究成果进行了综述。介绍了输电网中的安全、设备、结构、管理和市场等一系列风险因素及相应建模方法;从场景规划、随机规划、模糊规划和区间规划等方面,评述了考虑多种不确定因素的输电网风险规划方法;基于评估指标和方法,综述了近年来国内外考虑多种不确定因素的系统风险评估体系研究成果。在此基础上,结合高比例可再生能源、交直流混联、网源协调、需求响应和建模优化等研究热点,展望了未来考虑多种不确定因素的输电网风险规划领域中需要关注的问题。

关键词：输电网不确定因素风险建模风险规划风险评估

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考虑连锁故障的输电网扩展规划方法

电力自动化设备 2021年第12期41卷 136-142页

作者：周景张衡刘盾盾程浩忠励刚张啸虎上海交通大学电力传输与功率变换控制教育部重点实验室上海200240 国家电网有限公司华东分部上海200210

为提高电网抵御多重故障的能力,常在输电网规划中嵌入N-k安全网络约束。但该方式未考虑故障间关联性,致使故障场景数量庞大且部分场景与实际不符,可能导致规划方案投资冗余。在计及故障关联性的基础上,提出一种考虑连锁故障的输电网双... 详细信息

为提高电网抵御多重故障的能力,常在输电网规划中嵌入N-k安全网络约束。但该方式未考虑故障间关联性,致使故障场景数量庞大且部分场景与实际不符,可能导致规划方案投资冗余。在计及故障关联性的基础上,提出一种考虑连锁故障的输电网双层扩展规划模型。上层模型以线路投资、运行及切负荷成本之和最小为目标,考虑了故障链约束;下层模型以切负荷最小为目标,对上层模型得到的规划方案进行连锁故障校验。上下层模型以故障链约束为纽带,通过迭代添加新的约束,达到降低求解规模、加快算法收敛的目的。以IEEE RTS-24系统为分析算例,仿真结果表明所提模型能够在抵御连锁故障的同时提升规划方案经济性。

关键词：输电网扩展规划连锁故障故障链 N-k安全网络约束

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输电网鲁棒规划研究综述与展望

电网技术 2019年第1期43卷 135-142页

作者：刘盾盾程浩忠刘佳曾平良张建平陆建忠电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市闵行区200240 杭州电子科技大学自动化学院浙江省杭州市310018 国家电网有限公司华东分部上海市浦东新区200002

在高比例可再生能源并网与智能电网快速发展的背景下,电力系统不确定性进一步增强。不确定性给输电网规划工作带来新的问题与挑战。鲁棒优化作为处理不确定因素的优化方法被引入到输电网规划问题中来,近年来成为研究热点。对输电网鲁棒... 详细信息

在高比例可再生能源并网与智能电网快速发展的背景下,电力系统不确定性进一步增强。不确定性给输电网规划工作带来新的问题与挑战。鲁棒优化作为处理不确定因素的优化方法被引入到输电网规划问题中来,近年来成为研究热点。对输电网鲁棒规划研究展开综述。首先,归纳总结鲁棒优化在输电网规划中的研究现状。然后,基于鲁棒优化理论,通过一般形式的输电网鲁棒规划模型,分别阐述针对负荷、可再生能源、设备故障、电源投资退役等各类型不确定因素的建模方法。最后,提出输电网鲁棒规划研究展望与挑战,指出未来输电网鲁棒规划中亟待解决的问题与发展方向,旨在为未来输电网鲁棒规划研究提供一定指导与建议。

关键词：输电网规划可再生能源不确定性鲁棒优化