支撑电网黑启动的风光储新能源电站协调控制策略

doi:10.12204/j.issn.1000-7229.2020.09.006

电力建设 ›› 2020, Vol. 41 ›› Issue (9): 50-57.doi: 10.12204/j.issn.1000-7229.2020.09.006

支撑电网黑启动的风光储新能源电站协调控制策略

崔红芬¹^,², 王德顺¹^,², 杨波¹^,², 吴福保¹^,², 朱天天³, 赵晶晶³

1.中国电力科学研究院有限公司,南京市 210003
2.中国电力科学研究院有限公司江苏省储能变流及应用工程技术研究中心,南京市 210003
3.上海电力大学电气工程学院,上海市 200090

收稿日期:2020-03-12 出版日期:2020-09-01 发布日期:2020-09-03
作者简介:崔红芬(1984),女,硕士,高级工程师,主要研究方向为新能源发电、储能在电力系统应用技术;|王德顺(1982),男,硕士,高级工程师,主要研究方向为新能源发电、储能应用技术;|杨波(1977),男,硕士,研究员级高级工程师,主要研究方向为新能源发电、储能应用技术;|吴福保(1972),男,博士,研究员级高级工程师,主要研究方向为分布式能源及储能技术;|朱天天(1995),男,硕士研究生,主要研究方向为新能源发电;|赵晶晶(1980),女,博士,副教授,主要从事分布式发电与微电网技术、风力发电与无功电压控制、配网无功优化方面的研究工作。
基金资助:
中国电力科学研究院有限公司实验室开放基金项目“大容量储能实现的新能源发电基地电网黑启动协调控制技术研究”(NY83-19-011)

Coordinated Control Strategy of Wind-Solar-Storage Power StationSupporting Black Start of Power Grid

CUI Hongfen¹^,², WANG Deshun¹^,², YANG Bo¹^,², WU Fubao¹^,², ZHU Tiantian³, ZHAO Jingjing³

1. China Electric Power Research Institute, Nanjing 210003, China
2. Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application, China Electric Power Research Institute, Nanjing 210003, China
3. College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China

Received:2020-03-12 Online:2020-09-01 Published:2020-09-03

摘要/Abstract

摘要：

针对局部风光资源丰富地区大停电黑启动的方案,首先建立了风光储新能源电站黑启动控制模型,研究其支撑电网黑启动的过程,储能系统作为主电源保证黑启动过程中系统电压和频率稳定。其次,提出了一种风光机组负荷跟踪功率协调控制策略,当风光出力不足时,风光机组采用最大功率跟踪(maximum power point tracking,MPPT)算法,储能系统作为主电源负责微电网功率的平衡;当风光出力足够时,风机根据光伏出力的变化进行减载运行,有效跟踪负荷功率变化,减少储能充电功率。该控制策略不但可减少储能系统充放电转换次数提高储能系统使用寿命,还能大大降低黑启动中储能系统配置容量,提高经济效益。最后,基于DIgSILENT/PowerFactory仿真平台搭建了风光储新能源电站控制模型,仿真验证了风光储新能源电站作为电网黑启动电源的可行性和所提控制策略的有效性。

关键词: 黑启动, 风光储新能源电站, 负荷跟踪, 频率电压控制

Abstract:

Aiming at the black-start scheme of blackouts in areas with abundant wind and solar resources, this paper firstly establishes a black-start control model for wind-solar-storage power stations to study the process of supporting the black-start of the power grid. The energy storage system is used as the main power source to ensure the system voltage and frequency stable. Secondly, a coordinated control strategy for load tracking power of wind-solar units is proposed. When wind-solar power output is insufficient, wind-solar power unit adopts maximum power point tracking (MPPT) algorithm, and the energy storage system acts as the main power source to balance the power of microgrid. When wind-solar output is sufficient, wind-solar units effectively track load power changes to avoid excessive power charging to energy storage. This control strategy can not only reduce the times of charge-discharge conversion of the energy storage system, but also greatly reduce the configuration capacity of the energy storage system in black start, which can provide economic benefits. Finally, on the DIgSILENT/PowerFactory simulation platform, a control model for wind-solar-storage power station is built, and the simulation verifies the feasibility of wind-solar-storage power supply as power grid black-start source and the effectiveness of the control strategy proposed in this paper.

Key words: black start, wind-solar-storage power station, load tracking, frequency and voltage control

中图分类号:

TM61

崔红芬, 王德顺, 杨波, 吴福保, 朱天天, 赵晶晶. 支撑电网黑启动的风光储新能源电站协调控制策略[J]. 电力建设, 2020, 41(9): 50-57.

CUI Hongfen, WANG Deshun, YANG Bo, WU Fubao, ZHU Tiantian, ZHAO Jingjing. Coordinated Control Strategy of Wind-Solar-Storage Power StationSupporting Black Start of Power Grid[J]. ELECTRIC POWER CONSTRUCTION, 2020, 41(9): 50-57.

图/表 13

图1 支撑电网黑启动的风光储新能源电站拓扑结构

Fig.1 Topology of wind-solar-storage power station supporting black start of power grid

图2 储能系统控制框图

Fig.2 Control diagram of the battery energy storage system

图3 DFIG有功功率控制框图

Fig.3 Control diagram of DFIG active-power control system

图4 光伏P-U特性曲线

Fig.4 Photovoltaic P-U characteristic curve

图5 光伏电源控制框图

Fig.5 Control of photovoltaic power

图6 风机MPPT控制与负荷跟踪控制框图

Fig.6 Control diagram of DFIG for load tracking and MPPT

图7 最大功率跟踪与负荷跟踪协调控制流程

Fig.7 Flow chart of load tracking and MPPT

图8 风速波动曲线

Fig.8 wind speed variation

图9 时变光照强度曲线

Fig.9 Time-varying irradiance

表1 新能源电站电源配置表

Table 1 Power configuration of the new energy power station

图10 厂用异步电动机负载功率与转速的关系

Fig.10 Relation between load and speed of asynchronous motor in power plant

图11 双馈风机工作于MPPT控制模式时仿真图

Fig.11 Simulation diagram of DFIG working in MPPT control mode

图12 双馈风机工作于MPPT与负荷跟踪控制相结合模式时仿真图

Fig.12 Simulation diagram of DFIG working in MPPT control and load tracking mode

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支撑电网黑启动的风光储新能源电站协调控制策略

Coordinated Control Strategy of Wind-Solar-Storage Power StationSupporting Black Start of Power Grid

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