高比例可再生能源未来电网的源网协调一体化规划基础理论与关键技术研究

项目来源

国家自然科学基金(NSFC)

项目主持人

鲁宗相

项目受资助机构

清华大学

项目编号

U1766201

立项年度

2017

立项时间

未公开

项目级别

国家级

研究期限

未知 / 未知

受资助金额

292.00万元

学科

工程与材料科学-电气科学与工程-电力系统与综合能源

学科代码

E-E07-E0704

基金类别

联合基金项目-重点支持项目-智能电网联合基金

源荷双向响应 ; 源网协调一体化规划 ; 双层立体组网规划 ; 常规电源空心化 ; 高比例可再生能源 ; High renewable energy penetration ; integrated generation and transmission planning ; bi-direction response between generation and load ; hollowing out trend of conventional generation ; bi-level stereoscopic network planning

参与者

曾平良;周勤勇;乔颖;张彦涛;吴晨曦;杨京齐;邵瑶

参与机构

杭州电子科技大学;中国电力科学研究院有限公司

项目标书摘要:我国严重弃风弃光的窘迫现状和高比例可再生能源未来发展愿景形成了巨大反差,如何规划设计可再生能源并网运行从弃风弃光到高比例消纳“负正翻转”的技术途径成为我国电力行业迫在眉睫的难题。本项目针对我国高比例可再生能源未来电网发展场景,深入研究全新的源网一体化规划基础理论与关键技术,建立分布式灵活资源和负荷深度耦合的广义负荷模型与考虑资源、电源互补特性的高比例大规模可再生能源场站模型,提出精细刻画波动电源随机特性、适应复杂工况源荷双向响应的运行模拟方法,针对源端电网可再生能源大规模集中开发和受端电网常规电源“空心化”的不同特点分别提出立体组网、弱扩张型网络的规划方法,建立适应高比例可再生能源复杂场景的电网规划评价指标与方法。预期研究成果可为我国高比例可再生能源未来电网愿景的实现提供有效的规划理论和技术,为国际可再生能源发展提供中国式范本。

Application Abstract: The current embarrassing situation of high wind and PV power curtailment in China contrasts sharply with the nation’s ambitions in achieving high share of renewable generation.It is an urgent task in Chinese power industry to tackle the problem of how to plan and design renewable power(RE)grid connection so as to turn RE integration from negative(curtailment)to positive(no curtailment).This project,considering China’s goal of achieving high share of renewable power generation,proposes to focus research on the theory and technologies of new integrated generation and network planning,including new generalized load models that reflect close interactions between load and distributed renewable generation and complex generation models for large scale,resource complemented renewable generation.A new production simulation method is proposed considering detailed depiction of variable generation characteristics and bi-directional response between generation and demand under complex operating conditions.Bi-level stereoscopic and non-aggressive grid expansion planning methods are proposed,respectively,for sending grids with high share of renewable power and receiving grids with hollowing out of conventional generation.New grid planning evaluation methods and indicators that are suitable for future grid scenarios with high share of renewable generation are developed.Expected research results of this proposal will provide effective grid planning theory and key technologies for achieving China’s goal of future electricity network with high share of renewable generation,delivering a Chinese model for renewable generation development in the world.

项目受资助省

北京市

项目结题报告(全文)

可再生能源高比例并网成为我国电力系统必然趋势,但目前电网规划技术难以支撑未来可再生能源高效消纳,能源转型面临严重挑战。本项目针对我国高比例可再生能源未来电网发展场景,深入研究源网一体化规划基础理论与关键技术。针对分布式可再生能源、电动汽车等负荷的建模难题,采用机理分析与数据统计的方法建立了深度耦合广义负荷模型,揭示广义负荷的时空演变特性并建立其描述方法与预测模型。针对传统的电源规划模型对多类型资源、电源互补特性刻画不足问题,研究了考虑资源互补的大规模可再生能源场站建模方法以及可用于大电网规划的波动电源多时空尺度聚合模型,提出了考虑灵活资源互补的新型大规模可再生能源场站模型,对新型发电单元进行了数学描述与建模。针对高比例新能源接入带来的电力系统供需平衡模式转变问题,研究系统源荷双向响应的模型、机制及分析方法,提出了基于源荷失配量的源荷双向响应场景识别方法,建立了适合我国“国分省”多级平衡机制的分析框架和求解方法。针对我国可再生能源大规模开发集中输送模式下源端外送电源特性调控及其与本地电网交互影响的多重难题,提出了源端网络立体组网规划技术,提出了计入可再生能源自身调频调峰能力的汇集网络规划方法。针对常规电源“空心化”受端电网内常规规划方法失效的难题,研究了高比例可再生能源电网安全稳定质变的内涵及安全稳定拐点分析方法,研究了提升系统安全稳定的技术框架和适应受端电网特征的规划方法,提出了基于社团结构的受端电网多目标优化规划方法和动态无功补偿配置方法。针对未来系统关键指标的关注点发生变化、现有规划方案评估方法及指标失效的问题,项目开展了适应复杂场景的电网规划评价指标与方法研究,揭示了电力系统灵活性平衡机理,提出了涵盖安全性、可靠性、经济性与灵活性的电网评价指标体系及评价方法,提出了非时序生产模拟模型和求解算法,实现了“四性”指标的分析。

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  • 5.Improvement and Application of Frequency Analysis Modules for Power System in High Proportion of Renewable Energy Situation

    • 关键词:
    • ;Aggregation model;Frequency regulations;High proportion of renewable energy;New energies;Primary frequencies;Primary frequency regulation;Renewable energies;Simplified aggregation model;System frequency;System inertia
    • Gong, Haoyue;Zhou, Qinyong;Guo, Qiang;Qin, Xiaohui;Zhao, Shanshan;Su, Lining;He, Hailei
    • 《Dianwang Jishu/Power System Technology》
    • 2021年
    • 45卷
    • 12期
    • 期刊

    By analyzing the existing frequency models of the systems with new energy, it is found that there exists a large margin of error under some certain conditions. By adding the limiting link of prime mover on the basis of the existing model, and distinguishing the proportion coefficient of effective adjustment and the proportion coefficient of effective inertia of the system, the frequency model and the simplified aggregation model of the new energy system with the limiting link are proposed. Typical system examples show that the two models have good fitting prediction effects under different new energy access proportions and different types. They can well reflect the overall inertia and the primary frequency regulation characteristics of the system. The actual power system example, which contains new energy and DC access, shows that the proposed simplified aggregation model can accurately reflect the frequency variation of the power system and has engineering application values.
    © 2021, Power System Technology Press. All right reserved.

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  • 6.基于?评估的多能流节能调度

    • 关键词:
    • 先进绝热压缩空气;?效率;风电;多能流;模拟退火算法;节能
    • 吴晨曦;何章露;叶剑雄;洪晗笑
    • 《电力科学与工程》
    • 2021年
    • 08期
    • 期刊

    多能流系统可以实现能源的整体规划、多能互补和梯级利用,提高能源利用率。在此背景下,构建冷、热、电多能流系统模型,并引入压缩空气消纳风电,平衡能量。以热力学第二定律的"?分析"方法评估系统的节能指标,确定多能流系统的最节能调度方法。以某园区冬夏季节的典型风电出力和冷、热、电需求为例,采用模拟退火算法进行系统的节能调度并计算系统?效率。对系统是否使用先进绝热压缩空气对系统节能性的影响进行对比研究。研究结果表明,系统采用?评估节能指标,在具有先进绝热压缩空气时?效率更高,约为38%~58%。

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  • 7.考虑分布式可再生电源和储能的智能配电网可靠性评估综述

    • 关键词:
    • 分布式可再生能源;储能;智能配电网;可靠性评估方法
    • 刘凯诚;钟鸣;曾平良;朱良管
    • 《电测与仪表》
    • 2021年
    • 07期
    • 期刊

    储能是提高消纳高比例分布式可再生能源(DRG)的有效措施,是智能电网发展的重要组成部分之一。分布式可再生能源和储能的快速发展给配电网安全运行和供电可靠性带来巨大挑战和机遇,为此国内外学者近几年开展了大量研究,是目前热点研究领域之一。文中对计及DRG和储能的配电网可靠性评估研究进行系统分析,重点介绍DRG和储能对配电网可靠性的影响因素,建立含DRG和储能的配电网可靠性评估元件模型、DRG发电模型和储能充放电模型,从评估配电网可靠性的指标体系出发,分析适用高比例分布式可再生能源和储能的配电网评估方法,最后提出了在未来研究中急需解决的几个问题。

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  • 8.Frequency-Constrained Stochastic Planning Towards a High Renewable Target Considering Frequency Response Support From Wind Power

    • 关键词:
    • Frequency security; frequency support; planning; high penetration ofvariable renewable energy; wind farms;UNIT COMMITMENT; TEST SYSTEM; EXPANSION
    • Li, Hao;Qiao, Ying;Lu, Zongxiang;Zhang, Baosen;Teng, Fei
    • 《IEEE TRANSACTIONS ON POWER SYSTEMS》
    • 2021年
    • 36卷
    • 5期
    • 期刊

    The rotational inertia and primary frequency response capabilities of power systems are declining as synchronous generators (SGs) are replaced by inverter-based variable renewable energy (VRE) resources. Therefore, when a high VRE proportion is present, it becomes essential to include frequency security constraints in power system planning. Under this circumstance, the decline in SGs would deteriorate the system frequency response performance; thus, inverter-based resources are supposed to provide frequency response support. This paper presents a frequency-constrained stochastic planning method for high VRE share systems. Frequency response support from wind farms is considered in the planning process for the first time, and the unique characteristics of wind power support are addressed. Specifically, the uncertainty of and variations in wind power support capabilities are modeled from the field-measured data, and the optimal combination of various support schemes can be determined by introducing binary variables with novel linear constraints into the planning process. Moreover, the nonlinear frequency constraints are transformed and embedded in the planning model by the proposed computationally efficient adaptive piecewise linearization method. The planning is formulated as a stochastic optimization model to consider the VRE power uncertainty. Finally, case studies on the IEEE 30-bus system validate the proposed method, with results indicating time savings of 22%. Further, compared with the case that only SGs provide frequency support, the results based on the East China system demonstrate that considering wind power support can improve the VRE share from 49.5% to 79.7%. Index Terms-Frequency security, frequency support, planning,

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  • 9.高比例新能源接入场景电力系统频率分析模型改进与应用

    • 关键词:
    • 高比例新能源;系统频率;简化聚合模型;系统惯量;一次调频
    • 龚浩岳;周勤勇;郭强;秦晓辉;赵珊珊;苏丽宁;贺海磊
    • 《电网技术》
    • 2021年
    • 12期
    • 期刊

    分析现有含新能源系统频率模型进行仿真验证,发现其在部分工况下误差较大。通过在现有模型基础上增加原动机限幅环节,区分系统有效调差比例系数与有效惯量比例系数,提出了考虑限幅环节含新能源系统频率模型与简化聚合模型。通过典型系统算例表明,所提2种模型在不同新能源接入比例与类型下均有较好拟合预测效果,能够反映系统整体惯量和一次调频特性。通过实际含直流电源与新能源共同馈入电网算例表明,所提简化聚合模型可准确地反映系统频率变化情况,具有工程应用价值。

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  • 10.Voltage control strategy of DC microgrid based on dynamic load allocation

    • 关键词:
    • Dynamic loads;Electric power plant loads;Transient analysis;Electric load shedding;Voltage regulators;Control strategies;Current reference;Load distributions;Secondary voltage control;Steady state voltage;Voltage control strategies;Voltage reference;Voltage sensitivity
    • Xiao, Hongfei;Huang, Jinfeng;Chen, Xin;Lin, Yanyan;Wu, Chenxi
    • 《Dianli Zidonghua Shebei/Electric Power Automation Equipment》
    • 2021年
    • 41卷
    • 8期
    • 期刊

    U-I droop control has good adaptability and expansibility, and can be used in voltage control and load distribution of DC microgrid. Traditional droop control is difficult to balance the accuracy of steady-state voltage control with the accuracy of load distribution and its droop coefficient setting is limited. Therefore, a secondary voltage control strategy suitable for droop control is proposed. By setting the voltage reference value of droop control through voltage sensitivity, the DC bus voltage can be regulated quickly and the transient response speed of the system is improved. The load distribution coefficient is set accor-ding to the operation requirements, and the current reference value of droop control is updated to realize the required proportional load distribution among power units. Simulative results verify the effectiveness and adaptability of the proposed control strategy in the case of load mutation, droop coefficient change, distributed generation failure, communication interruption, and so on.
    © 2021, Electric Power Automation Equipment Press. All right reserved.

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