Power distribution network voltage regulation control protection integrated device

A voltage regulation control, control and protection technology, applied in the direction of AC network voltage adjustment, emergency protection circuit device, power network operating system integration, etc., can solve the problem of affecting the reliability of power supply, difficult to realize overload control control protection function, expensive problems, to achieve the effect of improving the quality and safety and reliability of power supply voltage, enhancing voltage regulation and control and protection capabilities, and ensuring high-quality, safe and reliable electricity consumption

Pending Publication Date: 2021-11-05
米果时代(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, my country's distribution network has the following problems in voltage quality and power supply reliability: First, the power supply radius of medium and low voltage overhead distribution lines in my country's distribution network, especially the medium and low voltage overhead distribution network of rural distribution network The power supply radius of the line is large, and the terminal voltage of the medium and low voltage overhead distribution lines is lower than the lower limit of the allowable voltage during the peak load period, that is, the problem of "low voltage" occurs; in addition, with the large number of distributed power sources such as distributed photovoltaics connected to the The low-voltage distribution network causes the voltage of the medium- and low-voltage overhead distribution lines near the access point to be higher than the upper limit of the allowable voltage value, which may cause burnout of the user's electrical equipment in severe cases. Constraints, separate medium and low voltage overhead distribution line voltage regulators are used less, and the voltage quality problem of medium and low voltage overhead distribution lines with a long power supply radius is still prominent
Second, due to factors such as insufficient construction funds, the configuration of primary and secondary fusion intelligent switches for medium and low-voltage overhead distribution lines in my country is insufficient, and it is difficult to realize control, control and protection functions such as overload and short-circuit faults, which affects the improvement of power supply reliability.

Method used

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  • Power distribution network voltage regulation control protection integrated device
  • Power distribution network voltage regulation control protection integrated device
  • Power distribution network voltage regulation control protection integrated device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment provides a specific structure of an integrated equipment for voltage regulation, control and protection of a distribution network, including:

[0022] The integrated equipment body, the integrated equipment body includes the first permanent magnet operating mechanism G 1 , the second permanent magnet operating mechanism G 2 , vacuum bubble K 1 , vacuum bubble K 2 , vacuum bubble K 3 , vacuum bubble K 4 , Winding L 1 , Winding L 2 , insulating oil and equipment casing;

[0023] A signal acquisition module, the signal acquisition module includes a current transformer 2, a voltage transformer 3 and a zero-sequence current transformer 4;

[0024] The control protector 1 includes an information processing module, a control protection module, a power supply module, a communication module and a controller shell.

[0025] A control and protection module, the control and protection module includes an overload protection unit, a fault protection unit, a di...

Embodiment 2

[0031] This embodiment provides a specific structure of an integrated equipment for voltage regulation, control and protection of a distribution network, such as figure 1 As shown, when the voltage of the medium and low voltage overhead distribution lines is normal and there is no fault, the integrated equipment is in the working mode 1-normal working state; at this time, the vacuum bubble K 1 closed, vacuum bubble K 2 closed, vacuum bubble K 3 disconnected, vacuum bubble K 4 closure.

Embodiment 3

[0033] This embodiment provides a specific structure of an integrated equipment for voltage regulation, control and protection of a distribution network, such as figure 2 As shown, when the voltage at the end of the medium and low voltage overhead distribution lines is lower than the allowable voltage value or close to the allowable voltage value, the integrated equipment is in the working mode 2-boosting working state; the vacuum bubble K 1 closed, vacuum bubble K 2 closed, vacuum bubble K 3 closed, vacuum bubble K 4 disconnect.

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Abstract

The invention discloses a power distribution network voltage regulation control protection integrated device, which comprises an integrated device body, a signal acquisition module, a control protector and a control protection module, and is suitable for the technical field of power system power distribution network voltage quality and control protection, that is, the power distribution network voltage regulation control protection integrated device can have the function of a voltage regulator. The voltage regulation effect of the overhead distribution line of the power distribution network is realized; meanwhile, functions of primary and secondary fusion intelligent switches (an intelligent circuit breaker and a residual current operated protector) are realized, and functions of voltage and current monitoring, overload protection, short-circuit fault protection, residual current protection and the like are realized; and under the condition of reducing equipment configuration and cost, the voltage regulation and control protection capability of the low-voltage overhead distribution line in the power distribution network is enhanced, the power supply voltage quality and the safety and reliability level of the power distribution network are effectively improved, a large number of distributed power sources and electric vehicles are supported to access the power distribution network, and high-quality, safe and reliable power utilization of users is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of voltage quality, control and protection of a distribution network of a power system, in particular to an integrated device for voltage regulation, control and protection of a distribution network. Background technique [0002] The distribution network is the terminal link and basic unit of the power grid, which undertakes the core task of distributing electric energy to users. Voltage quality and power supply reliability are the core indicators to measure the power supply quality of distribution network. For a long time, my country's distribution network has the following problems in voltage quality and power supply reliability: First, the power supply radius of medium and low voltage overhead distribution lines in my country's distribution network, especially the medium and low voltage overhead distribution network of rural distribution network The power supply radius of the line is large, and the termin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/14H02J3/32H02H7/26
CPCH02J3/144H02J3/322H02H7/26Y02B70/3225Y02T90/167Y04S20/222Y04S30/14
Inventor 马山牧彭代南
Owner 米果时代(北京)科技有限公司
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