Fast Frequency Response From Offshore Multiterminal VSC-HVDC Schemes
Fast Frequency Response From Offshore Multiterminal VSC-HVDC Schemes
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DOI：
10.1109/tpwrd.2016.2632860
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发表时间：
2017-12-01
影响因子：
4.4
通讯作者：
Jenkins, Nick
中科院分区：
文献类型：
--
作者：
Adeuyi, Oluwole Daniel;Cheah-Mane, Marc;Jenkins, Nick
分析了利用风力涡轮机旋转质量和其它交流系统传递能量的多端电压源换流器（VSC-HVdc）（MTDC）方案的频率支持特性。提出了一种替代协调控制（ACC）方案，该方案优先考虑适合陆上VSC的频率与有功功率下垂，以：将风力涡轮机恢复功率转移到未受干扰的交流电网，并允许在不同交流电网上的多个功率不平衡期间正确控制MTDC系统的操作。MTDC系统配备建议ACC计划的快速频率响应能力相比，对协调控制方案，它使用的频率与直流电压下垂。频率控制方案的实验测试台上，这是一个三端高压直流系统证明。此外，MTDC频率支持能力时，风力发电场不提供额外的功率测试使用四端高压直流系统。
This paper analyzes the frequency support characteristics of multiterminal voltage source converter HVdc (VSC-HVdc) (MTDC) schemes using the energy transferred from wind turbine rotating mass and other ac systems. An alternative coordinated control (ACC) scheme that gives priority to a frequency versus active power droop fitted to onshore VSCs is proposed to: transfer wind turbine recovery power to undisturbed ac grids, and allow correct control operation of MTDC systems during multiple power imbalances on different ac grids. The fast frequency response capability of MTDC systems equipped with the proposed ACC scheme is compared against a coordinated control scheme, which uses a frequency versus dc voltage droop. The frequency control schemes are demonstrated on an experimental test rig, which represents a three-terminal HVdc system. Also, the MTDC frequency support capability when wind farms do not provide extra power is tested using a four-terminal HVdc system.