Outdoor series voltage quality adjustment device
A series voltage and quality adjustment technology, applied in the direction of circuit devices, harmonic reduction devices, electrical components, etc., can solve the problems of high voltage, reduce the service life of power distribution system, increase loss, etc., and achieve the effect of stable output voltage
Pending Publication Date: 2018-04-13
国网福建华安县供电有限公司 +1
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Problems solved by technology
[0003] Through this voltage regulation method, when the load power consumption peaks, the power supply voltage and load voltage are within the national regulation range (between 196VAC ~ 235VAC); When running, it will cause the voltage to be abnormally high
Excessive voltage will increase the loss and reduce the service life of the power distribution system
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0025] like figure 1 , figure 2 As shown, the outdoor series voltage quality adjustment device includes a distribution transformer 1, a rectification input filter 2, a rectifier 3, an inverter output filter 4, a bypass unit 5, and an input circuit breaker 6; the outdoor series voltage quality adjustment device It is arranged in series between the three-phase input unit 10 and the three-phase load 11, and the distribution transformer 1, the rectification input fil...
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The invention relates to the field of a voltage adjustment device, in particular to an outdoor series voltage quality adjustment device. The outdoor series voltage quality adjustment device mainly comprises a functional unit and a bypass unit, wherein the functional unit comprises a pulse width modulation (PWM) rectifier, a PWM inverter and a coupling transformer, whether a transformer and an energy storage unit (a storage battery / supercapacitor) are configured or not can be selected according to power class and site application demand, and the voltage quality adjustment device is connected inseries between a power grid and a protected load and is used for compensating and controlling a voltage on the load. The voltage quality adjustment device outputs stable voltage, the output voltage accuracy is smaller than or equal to + / -3%, the voltage quality adjustment device has a bypass function and has maintainability, bypass can be automatically achieved under a working state of the equipment, the bypass branch capacity is larger than or equal to two times of rated capacity, a main path can be used for performing maintenance operation and working of bypass is not affected when the bypass supplies power, maintenance operation can be rapidly performed by opening a cabinet door, and a fault functional module can be rapidly replaced.
Description
technical field [0001] The invention relates to the field of voltage regulating devices, in particular to an outdoor series voltage quality regulating device. Background technique [0002] In view of the characteristics of the voltage UP caused by the independent grid power supply voltage or load with a large fluctuation range (0.7UN≤UP≤1.2UN), severe waveform distortion, and constant changes in the power supply frequency within a certain range; in order to solve the problem of low voltage, the power supply Generally, the office will take the following measures: 1. Adjust the three-phase load according to the collected three-phase voltage data, and try to keep the three-phase voltage consistent; 2. Adjust the transformer tap to increase the output voltage of the secondary side of the transformer. [0003] Through this voltage regulation method, when the load power consumption peaks, the power supply voltage and the load voltage are within the national regulation range (betwe...
Claims
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IPC IPC(8): H02J3/00H02J3/01H02J3/24H02J9/02
CPCH02J3/00H02J3/01H02J3/24H02J9/02Y02E40/40
Inventor 陈艺鑫林艳玲吴光旭洪小丽林清美
Owner 国网福建华安县供电有限公司