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目前,静止无功发生器(SVG)已广泛应用于风力发电、太阳能发电等新能源发电领域。根据某公司自主研制的±10 Mvar/10 kV链式SVG,其拓扑结构为H桥级联,每相由12个链节(H桥)串联而成。详细介绍了H桥级联SVG链节的研究与功能验证。通过链节的对冲试验及其结果,验证了链节的功能和对冲试验控制策略的效果,使得链节的设计符合《链式静止同步补偿器》技术标准的要求(1.1倍过载时,能够连续运行),从而确保±10 Mvar/10 kV SVG能在工程现场正常、稳定地运行。
At present, the static generator (SVG) has been widely used in wind power, solar power generation and other new energy power generation. According to a ± 10 Mvar / 10 kV chain SVG independently developed by a company, its topology is an H-bridge cascade, each phase consists of 12 links (H-bridges) in series. The research and functional verification of H-bridge cascaded SVG links are introduced in detail. Through the hedging test and the result of the link, the function of the link and the effect of the control strategy of the hedge test are verified, and the design of the link meets the requirements of the technical standard of “chain static synchronous compensator” (1.1 times overload Operation) to ensure that ± 10 Mvar / 10 kV SVG can operate normally and steadily at the project site.