Application of symmetrical component method in protection system of bolter-miner
-
摘要: 针对掘锚机组异步电动机故障诊断可靠性和准确性不高的问题，提出将对称分量法应用到掘锚机组保护系统中，实现不对称性过流故障诊断。将三相电压分解为正序分量、负序分量和零序分量，通过有源移相电路和相序判别电路判别主回路的相序，通过负序分量采集电路得到负序电压值，根据负序电流值判断故障及其类型。工业性试验结果表明，对称分量法的应用提高了掘锚机组保护系统的灵敏度、可靠性、准确性和智能化水平，降低了系统维护成本，同时提高了掘锚机组异步电动机的使用寿命和掘进工作面的掘进速度。Abstract: In view of problems of low reliability and accuracy of fault diagnosis of asynchronous motor in bolter-miner, symmetrical component method was purposed to apply in protection system of bolter-miner to realize asymmetry over-current fault diagnosis. Three-phase voltage is decomposed into positive sequence component, negative sequence component and zero sequence component, then active phase shifting circuit and phase sequence judgment circuit are used to judge phase sequence of main circuit, and the negative sequence voltage is obtained by negative sequence component acquisition circuit and is used to judge fault and its type. Industrial test results show that application of the symmetrical component method improves sensitivity, reliability, accuracy and intelligence level of the protection system of bolter-miner, reduces system maintenance cost, and improves service life of asynchronous motor and excavation speed on working face.
-
-
期刊类型引用(2)
1. 张红涛. 电牵引采煤机数据采集系统设计. 煤矿机械. 2025(04): 28-32 . 
百度学术
2. 张俊华，薛辉. 基于无线网络的心理教育资源传输和分布式方法. 自动化技术与应用. 2023(11): 114-117 . 百度学术
其他类型引用(0)
计量
- 文章访问数: 49
- HTML全文浏览量: 14
- PDF下载量: 13
- 被引次数: 2
下载:
