HYSVG series high voltage dynamic reactive power compensation device
product description
Application fields and uses
HYSVG series products can be widely used in petrochemical industry, power system, metallurgy, electrified railway, urban construction and other industries. Locomotives, hoists, cranes, stamping machines, cranes, elevators, wind turbines, elevators, electric welding machines, resistance furnaces, quartz melting furnaces and other equipment provide high-quality, high-reliability reactive power compensation and filtering solutions.
HYSVG series products can enhance power transmission capacity, reduce power loss, compensate reactive power, control harmonics, suppress flicker, stabilize grid voltage, balance three-phase systems, change system damping characteristics, and improve system stability.
product model
Model Description
Technical Parameters
Features
HYSVG series products adopt modern power electronics, automation, microelectronics and network communication technologies, and adopt advanced instantaneous reactive power theory and power solution algorithm based on synchronous coordinate transformation. Grid voltage and other control target operation, dynamically track changes in grid power quality to adjust reactive power output, and can achieve curve setting operation to improve grid quality.
The easy-to-operate, high-performance, high-reliability HYSVG series products are designed to meet the urgent needs of users to improve the power factor of the power transmission and distribution grid, control harmonics, and compensate negative sequence currents. They have the following characteristics:
●Modular design, easy installation, debugging and setting.
●The dynamic response speed is fast, and the response time is less than or equal to 5ms.
●Output current harmonics (THD) ≤3%.
●A variety of operation modes can greatly meet the needs of users. The operation modes include: constant device reactive power mode, constant test point reactive power mode, constant test point power factor mode, constant test point voltage mode, load compensation mode, target value Can be changed in real time.
●Real-time tracking of load changes, dynamic and continuous smooth compensation of reactive power, improvement of system power factor, real-time control of harmonics, compensation of negative sequence current, and improvement of grid power supply quality.
●Suppress voltage flicker, improve voltage quality, and stabilize system voltage.
HYSVG circuit parameters are carefully designed, with low heat generation, high efficiency and low operating cost
●The equipment is compact in structure and occupies a small area.
The main circuit adopts the Japanese bridge power unit chain series structure formed under IGB. Each phase is composed of multiple identical power units. The whole machine outputs a ladder wave formed by superimposing PWM waveforms, which is close to sinusoidal and sinusoidal after being filtered by the output circuit. The degree is good.
●HYSVG adopts redundant design and modular design to meet the requirements of high reliability of the system.
●Modular design of power circuit, easy maintenance and good interchangeability
●Complete protection functions, including overvoltage, undervoltage, overcurrent, unit overheating, uneven voltage and other protections, and can realize waveform recording at the moment of failure, which is convenient to determine the fault point, easy to maintain, and has high operational reliability.
●Man-machine interface friendly display, external communication provides RS485 and other interfaces, using standard Modbus communication protocol. In addition to the functions of real-time digital and analog display, operation historical event record, historical curve record query, unit status monitoring, system information query, historical fault query, etc., it also has system self-check after power transmission, one-key start and stop, time-sharing control,
Oscilloscope (AD channel forced wave recording), fault instant voltage/current waveform recording and other special functions.
●The HYSVG design includes an interface used in conjunction with FC to realize the effective combination of fixed compensation and dynamic compensation, and provide users with more economical and flexible compensation solutions.
●No transient impact during switching, no closing inrush current, no arc reignition, and re-switching without discharge.
●When connecting with the system, there is no need to consider the phase sequence of the AC system, and the connection is convenient.
●Can be installed in parallel, easy to expand capacity. The parallel operation uses optical fiber communication, and the communication speed is fast, which can fully meet the requirements of real-time compensation.
Other parameters
Technical Parameters
●Rated working voltage: 6kV, 10kV, 27.5kV, 35kV;
●Rated capacity: ±1~±100Mvar;
●Output reactive power range: continuous change within the range from inductive rated reactive power to capacitive rated reactive power;
●Response time: ≤5ms;
●Overload capacity: 1.2 times overload for 1min;
●Output voltage total harmonic distortion rate (before grid connection): ≤5%;
●Output current total harmonic distortion THD: ≤3%;
●System voltage unbalance protection, setting range: 4%~10%;
●Efficiency: rated operating conditions ≤99.2%;
●Operating temperature: -20°C~+40°C;
●Storage temperature: -40°C~+65°C;
●Man-machine interface: Chinese color touch screen display;
●Relative humidity: The monthly average value is not more than 90°C (25°C), no condensation;
●Altitude: 1000m (higher than 1000m needs to be customized);
●Earthquake intensity: ≤8 degrees
