TC5303BUR00011R1 DCS模块卡件
通过将方波的传输
静止周期交替进行来实现编码。图3 REG216/316*4评估并比较传输周期内测量的注入电压与参考电压。在静止期，对可能的干扰进行评估，以确保正确的保护响应。注入变压器REX011配有P8型接触器。如果接地故障电流超过5 a，接触器将断开注入装置的输入电路，以保护其在发电机端子附近发生接地故障时免受高压。95%功能始终处于激活状态，将检测任何接地故障。电阻器RES、RPS用于为发电机中性点提供高电阻接地，并将注入信号耦合到RPS以及测量信号耦合到RES。类似的布置适用于发电机转子，其中与电阻器RER和RPR进行耦合；需要两个附加电容器C1和C2。定子有三种连接方式，转子接地故障保护有两种。
REG216/316*4库中有三种保护功能
-100%定子接地故障保护定子EFP-转子接地故障防护转子EFP-95%定子接地保护过电压U>在传输期间，数字滤波器算法分别根据输入信号对Uis、Ui和Uir、Ui计算瞬时接地故障电阻。在静止期间，检查滤波后的信号Uis和Uir是否受到受保护对象或连接网络的干扰。该检查用于验证接地故障电阻的先前计算。参考信号Ui在幅度和频率方面被连续监控。这确保了喷射信号正确且具有正确的频率。通过评估传输期间接地故障电流的电容分量，检查受保护机器的一次接地连接。100%定子接地故障保护功能该功能包括报警电平和跳闸电平以及相应的信号和跳闸输出。
By transmitting the square wave
The coding is realized by alternating the static period. Fig. 3 REG216/316 * 4 evaluates and compares the injection voltage and reference voltage measured during the transmission cycle. During the quiescent period, the possible interference shall be evaluated to ensure correct protection response. Injection transformer REX011 is equipped with P8 type contactor. If the ground fault current exceeds 5 a, the contactor will disconnect the input circuit of the injection device to protect it from high voltage in case of a ground fault near the generator terminal. 95% function is always active and will detect any ground fault. Resistors RES and RPS are used to provide high resistance grounding for generator neutral point, and couple injection signal to RPS and measurement signal to RES. A similar arrangement applies to the generator rotor, where it is coupled with resistors RER and RPR; Two additional capacitors C1 and C2 are required. There are three connection modes for stator and two for rotor ground fault protection.
The REG216/316 * 4 library has three protection functions
-100% stator ground fault protection Stator EFP rotor ground fault protection Rotor EFP 95% stator ground protection overvoltage U>During transmission, digital filter algorithm calculates instantaneous ground fault resistance according to input signal to Uis, Ui and Uir, Ui respectively. During standstill, check whether the filtered signals Uis and Uir are interfered by the protected object or the connected network. This check is used to verify the previous calculation of the ground fault resistance. The reference signal Ui is continuously monitored in amplitude and frequency. This ensures that the injection signal is correct and has the correct frequency. Check the primary earth connection of the protected machine by evaluating the capacitive component of the earth fault current during transmission. 100% stator ground fault protection function This function includes alarm level and trip level as well as corresponding signal and trip output.
