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Online automatic power distribution method and device

A power distribution device and automatic technology, applied in the direction of multi-phase network elimination/reduction of asymmetry, multi-phase network asymmetry reduction, etc., can solve the problem of unbalanced three-phase load on the low-voltage side, to reduce line loss on the low-voltage transmission side, Solve the unbalanced power consumption and reduce the effect of three-phase load asymmetry

Active Publication Date: 2014-08-20
长沙高升电子电器科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide an online automatic power distribution method and device to solve the existing technical problem of unbalanced three-phase load on the low-voltage side

Method used

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  • Online automatic power distribution method and device
  • Online automatic power distribution method and device
  • Online automatic power distribution method and device

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Embodiment Construction

[0040] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0041] The online automatic power distribution method and device of the present invention switch the power supply of single-phase users online by collecting the current or voltage on the three-phase transmission line, so as to meet the purpose of balanced power distribution among single-phase users on the low-voltage side.

[0042] refer to figure 2 , the preferred embodiment of the present invention provides an online automatic power distribution method, which is used for power distribution selection when three-phase transmission lines supply power to single-phase users. In this embodiment, the distribution transformer first converts the high-voltage power into low-voltage power for domestic use. The low-voltage side of the distribution transforme...

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Abstract

The invention discloses an online automatic power distribution method and device. The method comprises the steps that a first voltage value corresponding to a phase-A line in a three-phase electric transmission line, a second voltage value corresponding to a phase-B line in the three-phase electric transmission line, a third voltage value corresponding to a phase-C line in the three-phase electric transmission line and a fourth voltage value corresponding to a power supply line of a single-phase user are collected; the first voltage value, the second voltage value and the third voltage value are compared with one another, and the largest voltage value is determined; the difference value of the largest voltage value and the fourth voltage value is calculated, and whether the difference value is zero or not is judged; if the different value is zero, no power distribution instructions are generated, and the original power distribution state is kept; if the difference value is not zero, a power supply of the single-phase user is switched to the phase line corresponding to the largest voltage value. According to the online automatic power distribution method and device, power utilization balance on the three-phase branch circuit can be ensured to the maximum through the power supply distribution strategy, practicability and computational efficiency are high, the three-phase load dissymmetry can be reduced to the maximum, low-voltage electric transmission side line damage is reduced, and power supply safety, reliability and efficiency are improved.

Description

technical field [0001] The invention relates to the field of power supply control, in particular, to an online automatic power distribution method and device. Background technique [0002] With the continuous improvement of people's living standards, a large number of high-power single-phase household appliances, such as: air conditioners, electric water heaters, rice cookers, microwave ovens, ovens, etc., have entered ordinary households. These household appliances bring people comfort, convenience and fast life. , It also has a certain impact on the safety and economic operation of the low-voltage power supply system of the power supply department. refer to figure 1 , the existing power supply network leads three three-phase power supply lines from the low-voltage side of the 10KV / 380V / 220V distribution transformer through the air switch and AC contactor, and the A-phase, B-phase, and C-phase lines of each three-phase power supply line are respectively Access multiple si...

Claims

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Application Information

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IPC IPC(8): H02J3/26
CPCY02E40/50
Inventor 孙万红姚攀欧阳杰
Owner 长沙高升电子电器科技有限公司
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