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随着科学技术的飞速发展,对供电质量的要求越来越高,为保证电网的安全、可靠、经济运行,实现电力系统的自动化,对直流电源系统提出了更高的要求。用于变电站和发电厂的直流电源系统,作为断路器合闸电源、继电器保护装置电源和操作电源,其可靠性、稳定性的要求也越来越高。为了更好地选用和用好电力系统中的直流操作电源系统,现将晶闸管相控电源直流系统与高频开关直流电源比较简述如下。
With the rapid development of science and technology, the requirements for power supply quality are getting higher and higher. In order to ensure the safety, reliability and economy of the power grid and to realize the automation of the power system, higher requirements are placed on the DC power supply system. DC power supply system for substations and power plants, as the circuit breaker closing power supply, relay protection device power and operating power supply, its reliability, stability requirements are higher and higher. In order to better select and make good use of DC power system in power system, thyristor thyristor DC power supply system and high-frequency DC switching power supply are briefly described below.