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An Adaptive Platform Voltage Control Method

A voltage control method and self-adaptive technology, applied in AC network voltage adjustment, electrical components, circuit devices, etc., can solve problems such as adverse effects of amplification, charging pile interference, energy waste, etc., and achieve reference and high precision effects

Active Publication Date: 2022-07-15
YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

This creates the problem of mutual interference between charging piles.
If the voltage fluctuation of the power grid happens to happen at this time, it is easy to amplify the adverse effects
[0004] In the prior art, in order to ensure the stability of the voltage and current output by the charging pile, the charging pile is generally equipped with a voltage stabilizing device, but if the voltage stabilizing device is turned on for a long time, it will cause unnecessary waste of energy, and the stable voltage cannot be achieved when the device is turned off. purpose, so a real-time judgment is required

Method used

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  • An Adaptive Platform Voltage Control Method
  • An Adaptive Platform Voltage Control Method
  • An Adaptive Platform Voltage Control Method

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Embodiment Construction

[0029] An adaptive platform voltage control method, comprising the following steps:

[0030] Step 1: Sampling

[0031] The power grid and each charging pile are sampled, and the sampling frequency is greater than or equal to 100 times the fundamental frequency, and the sampling is carried out continuously.

[0032] The grid signal obtained by sampling is U a cos(2πf a t+ω a ) indicates that the data collected by each charging pile is represented by U i cos(2πf i t+ω i ), where i is the serial number of the charging pile, 1≤i≤n, and n is the total number of charging piles.

[0033] The grid signals and charging pile signals collected at the same time are called one group, and the power grid signals and charging pile signals collected at the next moment are called the next group.

[0034] Step 2: Data Fitting

[0035] When the number of collected data is greater than or equal to 10n, use the following formula to fit the intermediate parameter k ij ,

[0036]

[0037...

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Abstract

The invention belongs to a voltage control method, in particular to a self-adaptive platform voltage control method. It includes, step 1: sampling, sampling the power grid and each charging pile, and sampling is performed continuously. The grid signals and charging pile signals collected at the same time are called one group, and the power grid signals and charging pile signals collected at the next moment are called the next group. Step 2: Data fitting, fitting the required intermediate parameters; Step 3: Calculating, calculating the data at the next moment, and judging whether it meets the requirements. The significant effect of the present invention is: the application fully considers the mutual influence of a group of charging piles, establishes a complete data processing process, and perfectly solves the problem of mutual influence due to unstable voltage in the station area. data processing method. Through verification, the results calculated by this method are closer to the actual measurement results, with higher accuracy and more reference.

Description

technical field [0001] The invention belongs to a voltage control method, in particular to a self-adaptive platform voltage control method. Background technique [0002] The voltage fluctuation in Taiwan area is one of the common power grid pollution in Taiwan area. Fluctuating voltages affect almost all electrical equipment in the network. Today, with the increasing popularity of electric vehicles, there are charging piles for charging electric vehicles near many buildings. The voltage fluctuation of the power grid will directly affect the charging effect of the charging pile, ranging from low charging efficiency to damage to the car battery pack and even fire. [0003] In order to reduce the cost of charging piles and improve construction efficiency, several charging piles are often built continuously, and the supporting equipment of charging piles are sometimes shared. This causes the problem of interference between the charging piles. If the voltage fluctuation of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/14
CPCH02J3/144Y02B70/3225Y04S20/222
Inventor 吕卫民田书然黄志方曹洋宋峰高义新刘杰刘俊旭曹建德邵华强郭晶孙晓光潘明郝飞飞
Owner YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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