The virtual synchronous generator technology analogs the characteristics of the synchronous generator via the controller design. It improved the stability of the grid systems which include the new energy. At the same time, according to the adjustable characteristics of the virtual synchronous generator parameters, the parameter adaptive adjustment is used to improve the dynamic performance of the system. However, the traditional virtual synchronous generator adaptive control technology still has two drawbacks: on the one hand, the large-scale adjustment of the damping droop coefficient and the virtual moment of inertia requires the system having a high energy storage margin; On the other hand, there is a power overshoot phenomenon in the transient regulation process, which is disadvantageous to the power equipment. First, this paper provides a convenient adjustment method for improving the transient stability of the system, the system damping is adjusted by introducing the output speed feedback. Second, according to the transient power-angle characteristics of the system, a parameter adaptive control strategy is proposed, which shortens the transient adjustment time and ensures that the deviation of the system frequency in the transient adjustment process is within the allowable range, and improves the transient performance of the grid frequency adjustment, at the same time, the power overshoot is suppressed. Finally, the experimental results show that the proposed control strategy is superior to the existing adaptive control strategy.

中文翻译：

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虚拟同步发电机惯量与反馈参数自适应控制

虚拟同步发电机技术通过控制器设计模拟同步发电机的特性。提高了包括新能源在内的电网系统的稳定性。同时，根据虚拟同步发电机参数的可调特性，采用参数自适应调整来提高系统的动态性能。然而，传统的虚拟同步发电机自适应控制技术仍然存在两个缺点：一方面，阻尼下垂系数和虚拟转动惯量的大规模调整要求系统具有较高的储能余量；另一方面，瞬态调节过程中存在功率过冲现象，对电力设备不利。第一的，本文为提高系统的暂态稳定性提供了一种方便的调节方法，通过引入输出速度反馈来调节系统阻尼。其次，根据系统暂态功角特性，提出参数自适应控制策略，缩短暂态调整时间，保证暂态调整过程中系统频率的偏差在允许范围内，提高电网频率调整的瞬态性能，同时抑制功率超调。最后，实验结果表明，所提出的控制策略优于现有的自适应控制策略。通过引入输出速度反馈来调节系统阻尼。其次，根据系统暂态功角特性，提出参数自适应控制策略，缩短暂态调整时间，保证暂态调整过程中系统频率的偏差在允许范围内，提高电网频率调整的瞬态性能，同时抑制功率超调。最后，实验结果表明，所提出的控制策略优于现有的自适应控制策略。通过引入输出速度反馈来调节系统阻尼。其次，根据系统暂态功角特性，提出参数自适应控制策略，缩短暂态调整时间，保证暂态调整过程中系统频率的偏差在允许范围内，提高电网频率调整的瞬态性能，同时抑制功率超调。最后，实验结果表明，所提出的控制策略优于现有的自适应控制策略。缩短了暂态调整时间，保证了暂态调整过程中系统频率的偏差在允许范围内，提高了电网频率调整的暂态性能，同时抑制了功率超调。最后，实验结果表明，所提出的控制策略优于现有的自适应控制策略。缩短了暂态调整时间，保证了暂态调整过程中系统频率的偏差在允许范围内，提高了电网频率调整的暂态性能，同时抑制了功率超调。最后，实验结果表明，所提出的控制策略优于现有的自适应控制策略。