New Adaptive Decentralize Under Frequency Load-Shedding Algorithm
New Adaptive Decentralize Under Frequency Load-Shedding Algorithm
复制标题
新的自适应分散频率减载算法
DOI：
--
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Naser Khodabakshi javinani
中科院分区：
文献类型：
--
作者：
Mohammad Hosein Fazaeli;Mohammad Mostafa Keramat;Hashem Alipour;Naser Khodabakshi javinani
当电网中存在扰动时，一些发电机单元从电网断开。频率开始下降。因此，在电网中采用多级频率继电器。传统方法最关键的问题是固定设置;在可用于此类继电器的标准方法中，各种现象包括在模拟中，并且固定设置应用于继电器。在电网中，当扰动较大时，常规的频率减载方法效果不佳。在传统的甩负荷方法中，只考虑了频率变量，因此本文除了考虑频率变量外，还考虑了电压变量和频率导数来进行甩负荷操作。在实践中，本文所做的是提出一种在临界情况下的减载算法。频率可以稳定在允许值，并且由于该操作是分散进行的，因此继电器之间不需要通信。与其他方法相比，所提出的方法具有明显的优势是其实用性。因此，该算法可以通过数字继电器配置软件（例如分别用于Siemens和ABB继电器的DIGSI和PCM 600软件）快速完成。另一方面，在与呼罗珊电网相关的真实的电网中进行了仿真，并与伊朗电网中常用的频率减载方法进行了比较，显示了该方法的优越性。所有模拟都在DigSilent软件环境中执行。
when there is a disturbance in the power grid, some power generator units are disconnected from the grid. The frequency starts to decrease. Therefore, multi-stage frequency relays are used in power grids. The most crucial issue with the conventional method is fixed setting; in the standard method available for such relays, various phenomena are included in the simulations, and fixed settings are applied to the relays. In power grids, in case of large disturbance, conventional frequency load shedding methods are not efficient. In conventional load shedding methods, only the frequency variable is considered, so in this article, besides the frequency variable, The voltage variable and the frequency derivative are also used to perform the load shedding operation. In practice, what has been done in this paper is to present a load shedding algorithm in critical situations. The frequency can be stabilized in the allowable value, and since this operation is performed decentralize, there is no need for telecommunication between relays. What gives the proposed method a distinct advantage over other methods is its practicality. Thus, this algorithm can be quickly done by digital relay configuration software (such as DIGSI and PCM600 software used for Siemens and ABB relays, respectively). On the other hand, the simulations were performed in a real grid related to the Khorasan grid and compared with the common method used for frequency load shedding in Iranian grids, and the superiority of this method is shown. All simulations are performed in the DigSilent software environment.