Voltage regulating device and method thereof
A voltage regulating device and transformer technology, applied in the field of voltage regulating devices, can solve problems such as contact ablation, excessive difference between line capacity and power load, contact adhesion, etc.
Pending Publication Date: 2017-11-28
BEIJING IN POWER ELECTRIC
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Problems solved by technology
[0002] At present, with the increase in the number of various household electrical appliances year by year, the pressure on the transmission network in various regions has begun to increase. The difference between the line capacity and the power load is too large. The use of a large number of electrical appliances has caused the high no-load voltage or heavy-load voltage in the station area. However, taking measures such as reactive power compensation and unbalance compensation can only improve some voltage problems caused by reactive power and unbalanced loads, but for voltage problems caused by active loads , it is necessary to take measures to directly regulate the pressure to control
[0003] In the prior art, most of the voltage regulation measures used are transformer on-load contact voltage regulation and autotransformer tap voltage regulation; this voltage regulation method has at least the following defects: all rely on contacts to switch between different voltages, and there are contact points. Potential failures such as point ablation and contact adhesion, low safety performance
Method used
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Embodiment 1
[0042] refer to figure 1 In the illustrated embodiment, a voltage regulating device is provided in the embodiment of the present invention, and the voltage regulating device includes: a control module 101, a first transformer 102 and a bridge thyristor switching circuit 103;
[0043] The bridge-type thyristor 103 switching circuit includes bridge arms, and each bridge arm includes: a thyristor;
[0044] The input coil of the first transformer 102 is connected to the voltage output terminal. The output coil of the first transformer 102 includes a plurality of taps, and each tap corresponds to a different coil winding. The corresponding bridge arm connection;
[0045] The above-mentioned control module 101 is used to control the conduction and disconnection of different thyristors in the bridge thyristor switching circuit, and control the conduction and disconnection of the half-bridge arm, so that the corresponding first half-bridge arm The coil winding of a transformer is tu...
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The invention provides a voltage regulating device which comprises a control module, a first transformer and a bridge type silicon controlled rectifier switching circuit. The bridge type silicon controlled rectifier switching circuit comprises legs. Each leg is provided with a silicon controlled rectifier. The input coil of a first transformer is connected with a voltage output end. The output coil of the first transformer comprises a plurality of taps which correspond with different coil windings. The plurality of taps are connected with corresponding legs in the bridge type silicon controlled rectifier switching circuit. The control module is used for switching on and switching off the leg through on-and-off of the silicon controlled rectifier in the bridge type silicon controlled rectifier switching circuit. Furthermore the coil winding of the first transformer which corresponds with the leg is switched on for regulating the output voltage at the voltage output end. The voltage regulating device prevents a potential safety hazard in switching between different voltages by means of a contact switch.
Description
technical field [0001] The technical field of automation control of the present invention, in particular, relates to a pressure regulating device and method. Background technique [0002] At present, with the increase in the number of various household electrical appliances year by year, the pressure on the transmission network in various regions has begun to increase. The difference between the line capacity and the power load is too large. The use of a large number of electrical appliances has caused the high no-load voltage or heavy-load voltage in the station area. However, taking measures such as reactive power compensation and unbalance compensation can only improve some voltage problems caused by reactive power and unbalanced loads, but for voltage problems caused by active loads , it is necessary to take measures to directly regulate pressure. [0003] In the prior art, most of the voltage regulation measures used are transformer on-load contact voltage regulation a...
Claims
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IPC IPC(8): H02M5/293H02J3/12
CPCH02J3/12H02M5/293
Inventor 颜凯郭春雨蓝剑张洪涛邢勇
Owner BEIJING IN POWER ELECTRIC