A misoperation caused by AC flowing into DC circuit of busbar protection is introduced.
介绍了一起因交流量串入直流回路导致500kV母线保护误动的事故。
According to the actual situation at High Speed Wire Mill, methods are taken such as changing set parameters, exchanging capacitors of middle DC circuit periodically, and two converters sharing DC busbar, and so on in order to lower the probability of overvoltage occurrence in production.
针对高速线材厂的实际情况,采取改变变频器可设定的参数、定期更换中间直流回路电容、两台变频器共用直流母线的方法,使过电压在生产中发生的几率得到降低。
Application of small interposing relay in AC control circuit;
交流控制回路采用小型高阻抗中间继电器需注意的问题
Abnormal Analysis of a 220 V AC Intrude DC Current Fault Caused by Electric-arc
220V工频交流混入直流控制回路造成的开关误跳问题分析
It is common for the direct current circuit to be interfered by alternating current voltage.
直流回路受到交流电压干扰,是控制回路中容易产生的现象。
The voltage of the analog signals in control and protection circuits are all below DC 24V.
控制和保护回路模拟信号的电压都低于24V直流。
DC low voltage control circuit is adopted that it is more suitable for the long time work under the unsteady power.
采用直流低压控制回路,更适于电压不稳连续长时间工作,安全性高。
Research on Parameters Optimization of the Main Circuits and Controllers in HVDC Systems;
直流输电系统主回路和控制器参数优化选择研究
Design of a Helicopter Two-Loop Control System Using H_∞ Loop Shaping Method
H_∞回路成形直升机双回路控制系统设计
Shunt circuit control strategy for HVDC rectifier terminal
高压直流电网整流端的旁路控制策略
A Test Device for the Control Circuit of SCR Inverter Power Supply
可控硅整流逆变电源控制回路测试装置
Modeling and H_∞of Quadrotor and Design of Loop Shaping Controller
四旋翼直升机建模及H_∞回路成形控制器设计
Studies on Control Technology of Brushless DC Motor in Railway Switch;
铁路转辙机用无刷直流电动机控制技术研究
Exiting Issues of Control Circuit in Direct-current Switch Machines
直流转辙机控制电路存在的问题与改进
A Simple Start-up Control Circuit' Design of DC Motor
一种简单实用的直流电动机起动控制电路设计
The Design and Realization of Controlling DC Non-brushing Motor Circuit on SOPC
基于SOPC控制直流无刷电动机电路的设计与实现
The Hardware Circuit Design of Direct Current Supply Controlled by PLC in Industry
工业用PLC控制直流电源的硬件电路设计
The control over the constant flow rate and moisture content of tobacco is the key technique in developing the production line of the direct moisture regain in tobacco.
烟叶的恒流量和恒含水量控制,是研制直接回潮生产线的技术关键。
High-speed protection for faults, either in the DC line or the DC terminal equipment, is provided by control of the valves.
无论是直流线路还是直流换流设备的快速故障保护,都通过对换流阀的控制来提供。
direct multiplex control
直接多路转接控制器
low-pass filters in controlloops
控制回路中低通滤波器
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