This work focuses on variable limits of conditional anti-windup PI-controller described in the IEEE Std. 421.5-2016 applied in the current limiters of VSC-based applications. To overcome deadlock and chattering during numerical simulation of the Std. conditional anti-windup with variable limits, it proposes a method for software implementation based on Filippov theory. The robustness of the proposed implementation is studied through a VSC-HVDC link included in the WSCC 9-bus system and through STATCOM included in the Nordic-32 system. The case studies compare wind up, back calculation type anti-windup and heuristic methods applied in the conditional anti-windup with the proposed solution.

中文翻译：

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基于 VSC 的设备的条件抗饱和 PI 控制器的可变限制的建模和仿真

这项工作的重点是 IEEE 标准中描述的条件抗饱和 PI 控制器的可变限制。421.5-2016 适用于基于 VSC 的应用的限流器。为了克服标准数值模拟过程中的死锁和颤动。针对具有可变限制的条件反饱和，提出了一种基于 Filippov 理论的软件实现方法。通过包含在 WSCC 9 总线系统中的 VSC-HVDC 链路和包含在 Nordic-32 系统中的 STATCOM，研究了所提议实施方案的稳健性。案例研究比较了结束、反计算类型的反结束和在条件反结束中应用的启发式方法与所提出的解决方案。