The HV magnetically static var compensator (MSVC) is designed with a magnetically controlled reactor branch, a capacitor bank branch, and an intelligent control system. The MSVC intelligent controller collects the voltage and current signal of the system to calculate its reactive power compensation amount. By adjusting the output capacity of the magnetically controlled reactor, full capacity stepless regulation of inductive and capacitive reactive power can be achieved. As the device compensates fast and accurately with changes in load, the real-time power factor of the system is maintained above 0.95.

The device's core component - MCR, comprehensively apply advanced manufacturing technologies such as magnetic circuit parallel leakage self-shielding patented technology, integrated with large-scale transformers, high-voltage transformers, high-voltage capacitors, and power electronic control. The core adopts design methods such as magnetic density non-saturation, symmetric splitting, and independent AC/DC magnetic circuits. The windings utilize design methods such as auto-coupling, series-parallel connection, and structural symmetry. Adopting the design of overall electromagnetic structure and control scheme, maintenance-free and unmanned operation are realized. Through above technological measures, the losses, noises, and harmonic content of the MCR are effectively reduced, resulting in a rational structure, reliable quality, low cost, advanced performance, mature manufacturing process, stable operation, maintenance-free operation, and unmanned operation in substations.

Advantages:Automatic stepless fast compensation, magnetic circuit parallel leakage self-shielding, magnetic density non-saturation, low losses, low noises, low harmonic, maintenance-free, and unmanned operation

1.MSVC Intelligent Controller
MSVC Intelligent Controller is a three-phase MCR intelligent controller designed and developed for three-phase power systems. It supports various topologies, up to 4-channel capacitor auto-switching, automatic capacity adjustment of MCR, dual-master-variable mode, remote detection and setup, and 4 different control modes of integrated, reactive power, voltage, and power factor. The hardware adopts dual ARM and dual system design, integrating comprehensive measurement, operation, analysis, protection, control and compensation in one microcomputer controller. The HMI of the controller is designed separately from the main controller, which is easy for users to install and operate. The human-machine interface samples 10.3-inch high-performance embedded integration of industrial-grade touch screen, interface design is simple and beautiful, easy to operate. The main controller samples new anti-interference and anti-surge design, which greatly improves the stability of the system operation.MSVC intelligent controller can provide 4G IOT function to realize remote view and upgrade program service and other functions, which provides convenience for the maintenance and management of the equipment.

System configuration:
(1) Mainframe: 6 voltage measurement circuits
      7 current measurement circuits
      16 control contact outputs
      32 open inputs
      One 485 communication
      One 4G communication function
      One Ethernet communication function
(2) Display: a 10-inch touch display LCD model: MT6103IP
(3) Trigger signal fiber optic transmission module
(4) Trigger board 3 pieces

2. Control panel
Control panel size: 800mm × 600mm × 2260mm (can be customized according to user requirements)   
Control panel color: RAL7035 (demand-side confirmation)    
Working power supply: DC220V(110V)/ AC220V
PT rated input voltage: AC 100V             
CT rated input current: AC 5A/1A
Power factor setting: 0.8～1.0 adjustable            
Reactive power setting: 0～100% adjustable
Measurement accuracy: 1.0 level                      
Voltage: ≤ 0.5%
Current: ≤ 0.5%
Output relay contact capacity: 220V/5A         
Anti-interference: common mode 2500V, differential mode 1000V

3.MCR valve group
Operation voltage: 1%～2% of rated voltage             
Signal transmission: fiber optic transmission                    
Valve group structure: integrated, modular design, air insulation, three-phase independent valve group, simple installation, reducing the footprint of the equipment, easy maintenance.
The control system and the excitation unit are connected by fiber optics, and the fiber optic transmission of phase-shift triggering ensures the isolation performance and anti-jamming ability of the system.

The excitation unit selects thyristor power devices, equipped with perfect BOD protection module, with fault self-locking protection function to ensure the safety of equipment operation. The field programmable gate array FPGA is used to realize the trigger control, calculate the system reactive power gap with high precision, adjust the thyristor conduction angle to play small, change the impedance of the device smoothly, and realize the high-speed dynamic stepless adjustment.