| 引用本文: | 马志豪,孙丹,刘纯,年珩,汪海蛟,张明远.开绕组电励磁同步电动机接口并网变流器两阶段无功支撑控制建模与分析[J].电力自动化设备,2025,45(9):110-118. |
| MA Zhihao,SUN Dan,LIU Chun,NIAN Heng,WANG Haijiao,ZHANG Mingyuan.Modeling and analysis of two-stage reactive power support control for grid-connected converter interfaced by OW-WFSM[J].Electric Power Automation Equipment,2025,45(9):110-118. |
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| 摘要: |
| 随着新能源渗透率的不断提升，常规发电机组不断被新能源机组取代，电力系统动态无功支撑能力严重不足，电压稳定问题愈发凸显。基于开绕组电励磁同步电动机(OW-WFSM)接口的电压源型变流器(VSC)并网系统，提出包含VSC支撑控制与OW-WFSM调相控制的两阶段无功支撑控制策略，以实现VSC容量裕度和OW-WFSM强过载特性的结合。针对VSC支撑控制，采用电源叠加定理将暂态特性建模分解为4个独立状态，进而厘清控制参数对无功支撑效果的影响规律，实现多类型电源系统模型的有效求解。针对OW-WFSM调相控制，建立计及短路电流响应和励磁电流响应的暂态响应模型，为OW-WFSM参数设计提供指导。仿真结果表明，所提策略能够在实现VSC保护的同时，有效提升系统无功支撑能力。 |
| 关键词: 开绕组电励磁同步电动机 电压源型变流器 新能源并网 无功支撑 调相运行 |
| DOI：10.16081/j.epae.202503032 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(U23B20127) |
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| Modeling and analysis of two-stage reactive power support control for grid-connected converter interfaced by OW-WFSM |
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MA Zhihao1, SUN Dan1, LIU Chun2, NIAN Heng1, WANG Haijiao2, ZHANG Mingyuan2
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1.College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;2.State Key Laboratory of Renewable Energy Grid-integration of China Electric Power Research Institute, Beijing 100192, China
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| Abstract: |
| Along with the continuous increase of the penetration rate of renewable energy, the traditional generator units are continuously replaced by the renewable energy units, the dynamic reactive power support ability of power system is seriously insufficient, and the voltage stability problem is becoming increasingly prominent. On the basis of the voltage source converter(VSC) grid-connected system interfaced by the open-winding wound field synchronous motor(OW-WFSM),a two-stage reactive power support control strategy containing VSC support control and OW-WFSM condenser-like control is proposed to achieve the combination of VSC capacity margin and OW-WFSM overload characteristic. Aiming at the VSC support control, the transient characteristic model is decomposed into four independent states using the power superposition theorem, further the influence rule of control parameters on reactive power support effect is clarified, and the system model of multiple types of power sources is effectively solved. Aiming at the OW-WFSM condenser-like control, a transient response model considering short-circuit current response and excitation current response is established, which provides guidance for OW-WFSM parameter design. The simulative results show that the proposed strategy can effectively improve the system reactive power support ability while achieving VSC protection. |
| Key words: OW-WFSM VSC grid-connection of renewable energy reactive power support condenser-like operation |
