Static transformer type reactive generator

Abstract

The invention discloses a static transformer type reactive generator, which comprises a power grid parameter data center, a reactive power calculation center, a reactive power control center, a transformer type controllable reactor, a capacitor set complete device, an intelligent digital management platform, an information system channel communication network and a big data cloud computing storagecenter, wherein the power grid parameter data center is used for collecting power grid parameters and editing the power grid parameters into programs, the reactive power calculation center analyzes voltage and power factor change conditions and proposes a reactive power output scheme, the reactive power control center edits a reactive power control scheme and an instruction, and adjusts the inductive reactive power output of the transformer type controllable reactor and capacitor set complete device, the intelligent digital management platform is adopted to diagnose the reactive power demandof the power grid to achieve the reactive power demand of the power grid intelligent control, power grid comprehensive automatic control and information transmission are realized by using the information system channel communication network, and the big data cloud computing storage center is used for realizing information storage and resource sharing.

Description

technical field [0001] The invention relates to a reactive power generator and a complete set of power electronic reactive power devices, in particular to a static transformer-type reactive power generator, which belongs to power transmission and transformation power grids and power grids, and is used to stabilize and improve power factor of power grids The invention relates to stabilizing voltage and suppressing voltage transients to realize energy saving of power grid or equipment, and belongs to the field of power equipment. Background technique [0002] As the voltage level of the power grid is getting higher and higher, and the coverage area of ​​the power grid is getting bigger and bigger, the requirements for intelligent control and safety and reliability of the power grid are constantly increasing, especially for stabilizing the power grid voltage and reducing voltage fluctuations, controlling and suppressing power grid voltage transients, The requirements for improv...

AI Technical Summary

Problems solved by technology

Disadvantages are: there are steps in the adjustment process, prone to step capacitor over-compensation or under-compensation, unable to achieve continuous, smooth and stepless adjustment of full capacity; each shift of the tap changer is equivalent to a capacitor bank The rapid switching of the tap changer is easy to generate overvoltage and overcurrent; the transformer oil is easy to age and crack severely, the maintenance workload is heavy, and the service life of the tap changer is short

The disadvantages are: the thyristors are located in the high-voltage power grid, and the series connection of multiple thyristors has problems in synchronous control and internal resistance voltage equalization; the installation and debugging are complicated, the reliability is poor, the overload capacity is low, and it cannot adapt to the dirty environment.

The disadvantages are: the high-impedance transformer formed by the leakage flux of the transformer has very low electromagnetic induction efficiency and cannot reach 100% short-circuit impedance; in order to achieve high impedance, it is necessary to increase the flux leakage channel between the transformer windings, and the internal flux leakage heating is serious , easy to cause insulation aging, low reliability; complex structure, poor heat dissipation; low overload capacity, high noise, large loss

The disadvantages are: due to the use of DC auxiliary excitation, the response speed is slow, the noise is high, and the loss is large; the problem of grid voltage flicker cannot be solved, and the environmental protection requirements of the urban grid for equipment noise cannot be met.

The disadvantages are: the detection and control system is very complex and has low reliability; it needs to be installed in a clean and dust-free confined space, and the environmental requirements are high; the life of power electronic devices is only about 7 years, the devices are frequently damaged, the maintenance workload is large, and the maintenance time is long , the fully-controlled device itself has a large loss; the ability to resist grid voltage fluctuations, load current shocks, and three-phase load imbalances is relatively poor

Images