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煤矿用可调节的可控硅电力传动装置不仅可以提高矿井设备的生产率而且还可降低能耗量。然而,因其使用的安全性难以保证所以广泛地推广受到限制。可控硅电力传动装置的特点是:可控硅装置的过载能力小,短路电流与负荷电流具有可比性。现有的最大电流保护装置不能永远保证在紧急状态下可靠地切断电网。在标准技术文献中没有提到可控硅电力传动装置供电系统安全性的评价方法及其特殊的保护特点
Coal mine with adjustable SCR power transmission can not only improve the productivity of mine equipment but also reduce energy consumption. However, widespread promotion is limited due to the difficulty in ensuring the safety of its use. SCR power transmission is characterized by: SCR device overload capacity, short-circuit current and load current comparable. The existing maximum current protection device can not always ensure that the power grid can be reliably cut off in an emergency. There is no mention in the standard technical literature of the evaluation method of the safety of the power supply system of thyristor power transmission and its special protection features