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①产品概述MCR型系列动态无功补偿成套装置(以下简称SVC),适用于35kV、110kV、330kV变电站6-35kV母线的动态无功补偿,通过自动调节MCR的感性无功,实现平滑稳定系统的功率因数和无功需求;减少系统电压波动,稳定系统电压,降低系统电压闪变,提高供电电压质量。特别适合于负荷变化频繁,要求补偿精度高的场合,广泛应用于具有电弧炉、轧机、矿井提升机、电力机车、电焊机等大型无功冲击设备的企业用户和电力企业的220kV、110kV、35kV变电站。装置FC支路可根据系统情况做成固定、自动电容器组或滤波通道。FC支路向系统提供固定容性无功,MCR的控制部分采集母线电压,负载电流和MCR支路电流模拟量信号,经过控制算法的计算,得出可控硅触发角,经光电转换生成模拟量给定信号,形成控制可控硅导通角的触发脉冲,再将信号进行整形放大,对可控硅的导通状态进行移相控制,实现动态调节MCR支路感性无功,以平衡多余容性无功,使用户流入电网的无功功率趋于零。
① Product Overview MCR series dynamic reactive power compensation complete sets of devices (hereinafter referred to as SVC), suitable for 35kV, 110kV, 330kV substation 6-35kV bus reactive power compensation, by automatically adjusting the inductive reactive MCR to achieve smooth and stable system Power factor and reactive power requirements; reduce system voltage fluctuations, stabilize the system voltage, reduce system voltage flicker, improve the supply voltage quality. Especially suitable for frequent changes in load, requiring compensation for high precision occasions, widely used in electric arc furnace, rolling mills, mine hoists, electric locomotives, welding machines and other large-scale reactive impact equipment for business users and power companies 220kV, 110kV, 35kV Substation. Device FC branch can be made according to the system fixed, automatic capacitor bank or filter channel. FC branch to the system to provide a fixed capacitive reactive power, MCR control part of the bus voltage acquisition, load current and MCR branch current analog signal, calculated by the control algorithm, the SCR trigger angle obtained by the photoelectric conversion to generate analog Given a signal to form a trigger pulse control thyristor conduction angle, and then shaping the signal amplification, the thyristor conduction phase control, dynamic adjustment of the MCR branch inductive reactive power to balance the excess capacity Reactive, so that the user into the power grid reactive power tends to zero.