LWKK^®SVG静止无功发生装置

LWKK^® SVG-STATICVAR GENERATOR

原理：静止无功发生器（SVG:StaticVar Generator）的基本原理是由IGBT型高频并联逆变器通过电抗器直接并联在电网上，适当调节高频逆变器交流侧输出电压的相位和幅值或者直接控制其交流侧电流，就可以使该电路发生满足需求的无功电流，实现动态无功补偿的目的。下图展示的为LWKK^®SVG的三种运行模式：

Static var generator base on the theorythat a IGBT high frequency inverter connected to the grid in parallel throughthe reactor,properly adjusting the phase and amplitude of the AC output voltageof the high frequency inverter or directly control the current of AC side,thecircuit occur reactive current,achieve dynamic reactive power compensation.Asbelow are 3 operation modes of SVG.

适用场合：

1、 各类矿业生产、冶金行业，轧机和提升机较多的冲击性负荷。它们对电网冲击大，造成电压大幅波动，严重影响其他设备安全运行，降低功率因数和生产效率，达不到电力系统考核，造成罚款。

2、 绞车、转盘、泥浆泵较多存在的钻井工况，也是属于典型的冲击性负荷，对电网无功冲击大，功率因数极低，电压波动大，畸变率高，影响系统控制及重要设备的使用效果。

3、 需要大量电缆进行电力传输的线路供电系统，如高铁、轨道交通等，在电网中产生大量容性无功，抬高线路末端的电压，存在与系统谐振的可能。

1、 Elevators,rolling machinesbelong to the typical impact loads,in most kinds of mine and metallurgicalindustry,larger inpact on power grid reactive power,ａnd cause voltagefluctuation,serious interference the other epuipment operation,reduce theproduction efficiency,ａnd result in lower power factor.

2、 Oil and gas drilling rig powersystem including winch,rotary table and mudpump,due to the particularity ofworking condition of drilling,ａnd the system belongs to the loads inpact on thereactive power cause low power factor,voltage fluctuation,highdistortion,affect the control system.

3、 High-speed railway and railtuansit power supply system use a lot of cables for power transmission,capacitivereactive power exist in the system,raise the voltage,cause the systemresonance.

型号说明：Model Description:

LWKK07- 3F-300-400SVG

LWKK：德莱维诺^®无功补偿系列产品Delevision^® reactive power compensation series products

07：SVG静止无功发生装置 SVGstatic reactive power generating device

3F：适用于三相三线系统，4F为适用于三相四线系统

3F:  Suitablefor three-phase three-wire system, with 4Ffor three-phase four-wire system

300：补偿容量（Kvar）Compensationcapacity （Kvar）

400：电压等级（V）  Voltage rating (V)

技术特性：

l        SVG可与LC无源无功补偿结合使用，提高整体容量，节约成本；

l        可在线更换的模块化结构，更易于运行维护，柜式额定输出容量400Kvar；

l        采用双校正新型工频软件锁相环，自适应神经元在线整定的无功检测方法，以及基于平均电流补偿的逆控制电流跟踪控制策略，效率高，可靠性高；

l        采用*的IGBT模块，主电流为桥式全控的PWM变流器，具有功率密度大，可靠性高的特点；

l        DSP+FPGA控制系统，FPGA的高速检测，DSP的高速运算和双DSP之间高速通讯，确保无功检测和补偿精度准确有效，使用全数字控制系统，全部控制采用软件控制和保护，使整个系统安全、简单、可靠；

l        智能监控和显示使装置的操作更加灵活，运行参数，故障代码，工作状态一目了然，带远程通讯接口，可与上位机实时通讯。

It can combine debugging or eliminatingharmonic low voltage reactive power harmomic&reative power compensationdevice to use,improving the overall capacity and decreasing project investmen;Modulastructure,cabinet maximum rated output capacity 400Kvar,replace muduleonline,convenient operation and maintenance;Adopts new double-correctionsoftware phase-locked,reactive detection method of adaptive neuron onlinesetting,ａnd the inverse control based on average current compensation currentracking control strategy of high efficiency and reliability;With top worldIGBT module,the main current of bridge type is all control of PWMconverter,large power density and reliability;DSP+FPGA controlsystem,high-speed computing and communication between dual DSP,ensure accuratereactive power detection and compensation effectively,using full digitalcontuol system,all contuol and protection handle by software,ensure the wholesystem security,simple and reliable;Intelligent monitor and display device leadflexible operating,the operation parameters,the fault code and the workingstatus are clear,communicate with PC immediately through the remote communicationinterface.

技术参数

应用方案：

Application

SVG：单纯无功容量较小，谐波电流引起的畸变小的场合。

    For occasions in small reactive power compensation capacity and currentdistortion.

SVG+APF：对于无功补偿容量较大，谐波引起的电流畸变较大时，SVG补偿系统无功，APF补偿电网谐波电流，改善电网电压。

     For largereactive power compensation capacity,serious current distortion occasions,SVGcompensate reactive current,APF compensate harmonic current,improve thevoltage.

SVG+APF+TSC(MSC)：对于无功补偿容量大，预算较低的场合，SVG和TSC/MSC相结合的方案，适当选择小容量的SVG，控制预算比例，TSC/MSC可以采用消谐补偿回路，有效抑制电网谐波电流。

     For largereactive power compensation capacity,strict cost-control occasions.SVG andTSC/MSC compensate reactive power,SVG should be configured as general or lesssystem capacity,it cut the cost.TSC/MSC should be configured as eliminateharmonic loop,suppress the harmonic current in the grid effectively.