Working principle of three-phase 35kv high voltage dynamic compensation for SVG reactive power compensation cabinet

Description :

　　The SVG dynamic reactive power compensation device uses electric energy conversion technology to meet the needs of connecting to the power grid. In China, reactive power line losses account for a large proportion every year and consume a lot of electricity. The SVG reactive power compensation cabinet will send inductive and capacitive currents to the power grid for compensation. It uses controllable silicon to freely control the capacitor switch and absorb the electrical energy from the AC voltage system to charge the DC capacitor. The entire device is designed strictly and has strong environmental adaptability, which effectively solves the problem of current and voltage harmonics in the distribution system, SVG static synchronous compensator is currently the solution in the field of reactive power control. The SVG reactive power compensation cabinet can achieve bidirectional adjustment of output capacity, with fast response speed. The global power is developing towards high-power grids, and SVG reactive power compensation is often widely used in wind and photovoltaic power plants. They stabilize and control the grid voltage by adjusting the reactive power output. In photovoltaic power generation, SVG high-voltage dynamic reactive power compensation can not only generate reactive power but also absorb reactive power. SVG comprehensive compensation for large capacity wind farms has significant effects in overcoming output power fluctuations, and has good comprehensive harmonic control effects. There is no need to worry about harmonic generation and system resonance.

　　SVG dynamic reactive power compensation cabinet model description: S represents the number of three-phase compensation phases; Sometimes encountering single-phase D representation; H: Chain like coloration; KV: Voltage level; KVAR: device capacity; SVG: High voltage static dynamic reactive power generator; At the same time, every enterprise adds a company code to their products when they leave the factory, and the new Baite code is XBT. SVG dynamic reactive power compensation cabinet is often used to solve harmonic hazards in the power grid, such as reactive power compensation in photovoltaic projects, voltage fluctuation and flicker compensation for heavy loads in electric arc furnaces and calcium carbide furnaces. From the perspective of governance effect, it clearly achieves the goal of reducing consumption. The core of SVG static dynamic reactive power generator is a high power inverter, and the overall control adopts a self commutation phase converter to control the voltage magnitude and phase. The inverter will judge the output properties of reactive current based on the high and low values of fundamental voltage and AC power supply voltage. There is a free conversion between reactive power and active power, and they are relatively stationary with each other. When users encounter harmonic problems, they need time to detect and determine the problem, and then decide how to choose the compensation method to avoid mistakes. After all, the SVG dynamic reactive power comprehensive compensation integrated system needs to be developed together with the entire project construction.

　　The SVG high-voltage dynamic reactive power compensation cabinet is classified into the high-voltage reactive power compensation device series, with a rated capacity of 1-100Mvar and common voltage levels of 6KV, 10KV, and 35KV. The selected capacity for 6KV and 10KV voltages is 500-1000kvar, while the selected capacity for 35KV series is 2000-5000kvar. The overload capacity can reach 120%, and the capacitive and inductive automatic continuous and stable adjustment can not only operate as a single machine, but also support multi machine grid connection operation, multi bus comprehensive reactive power compensation, complete safety protection, high outdoor and indoor protection level, fault protection function of water cooling system, overvoltage, overcurrent, output communication system, etc. can all provide limited protection for electrical safety, The SVG high-voltage dynamic reactive power compensation device is an active large-scale filtering compensation device. In the starting stage, it fully considers the impact force of the starting current and specifically adopts self-excited starting technology. It is equipped with PLC to switch and control multiple capacitor groups. The control mode is selected and set according to the power grid problem. The technical parameter values are displayed in a multifunctional Chinese and English interface on site. All data information of the power grid operation can be backed up for timely adjustment and inspection.

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