| 引用本文: | 王贤,刘文颖,夏鹏,聂雅楠,王维洲.光伏电站参与电网主动调压的无功优化控制方法[J].电力自动化设备,2020,40(7): |
| WANG Xian,LIU Wenying,XIA Peng,NIE Yanan,WANG Weizhou.Reactive power optimization control method for PV station participating in active voltage regulation of power grid[J].Electric Power Automation Equipment,2020,40(7): |
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| 摘要: |
| 随着光伏发电渗透率以及系统对电能质量要求的提高，常规电源电压调节能力不足，而光伏电站因具有一定的无功容量而具备主动参与电网调压的潜力。在分析光伏电站电压调节特性的基础上，提出光伏电站参与电网主动调压的控制方法；针对光伏电站有功出力与电网负荷大小之间的矛盾性，引入光伏电站负载率和区域电网负荷率的概念，进而确定光伏电站主动调压的控制原理及目标；在此基础上，建立自上而下的光伏电站双层无功优化模型，上层优化模型用于跟踪并网点电压控制目标，下层优化模型将上层优化结果在各组无功补偿单元之间进行优化分配，实现光伏电站参与电网主动调压的精细化控制。以某地区电网为例，验证了所提方法的有效性。 |
| 关键词: 光伏电站 主动调压 无功优化 双层模型 精细化控制 |
| DOI：10.16081/j.epae.202006022 |
| 分类号:TM721;TM615 |
| 基金项目:国家重点研发计划项目(2018YFE0208400)；国家电网公司科技项目(SGGSKY00DJJS1900391)；国网甘肃省电力公司科技项目(SGGSKY00DJJS1900211) |
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| Reactive power optimization control method for PV station participating in active voltage regulation of power grid |
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WANG Xian1,2, LIU Wenying1, XIA Peng1, NIE Yanan1, WANG Weizhou3
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1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;2.Construction Branch of State Grid Tianjin Electric Power Company, Tianjin 300143, China;3.State Grid Gansu Electric Power Company, Lanzhou 730050, China
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| Abstract: |
| With the increase of PV(PhotoVoltaic) power generation permeability and requirement of system to power quality, the voltage regulation ability of conventional power source is insufficient, while PV station has the potential of active participating in voltage regulation of power grid because it has a certain reactive power capacity. Based on the analysis of voltage regulation characteristics of PV station, a control method of PV station participating in active voltage regulation of power grid is proposed. Aiming at the contradiction between active power output of PV station and the load of power grid, the concepts of load rate of PV station and the load rate of regional power grid are introduced, and the control principle and objective of active voltage regulation with PV station are determined. On this basis, a top-down bi-level reactive power optimization model of PV station is established, the optimization model of upper layer is used to track the voltage control target at the point of common coupling, and the optimization model of lower layer optimally allocates the optimization results of upper layer among each group of reactive power compensation unit, which realizes accuracy control of PV station participating in active voltage regulation of power grid. A regional power grid is taken as an example to verify the effectiveness of the proposed method. |
| Key words: PV station active voltage regulation reactive power optimization bi-level model accuracy control |
