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A low-voltage power supply early warning system and method

An early warning system, low-voltage technology, applied in the direction of AC network voltage adjustment, etc., can solve the problems of not being able to effectively mention low-voltage early warning-rectification business work, not taking into account the problem of upper-level power supply, and not being able to dynamically predict low-voltage problems, etc. Achieve the effect of improving analysis ability and data-based decision-making level, promoting lean management, improving early warning and ability to solve power supply quality problems

Active Publication Date: 2021-09-21
GUANGZHOU DIKO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system has the following disadvantages: 1) It does not consider the actual power consumption, such as the low voltage occurrence time is very short, and a large number of outdoor agricultural tools produce temporary low voltage during the busy season; 2) It only judges whether there is low voltage based on the data of one station area Problem, did not take into account the issue of the superior power supply, and could not trace the root cause of the low voltage problem; 3) The frequency of alarms was very high, which made the power supply management personnel tired of coping, and could not effectively mention the low voltage early warning-rectification business work; 4) Cannot dynamically predict the low voltage problem in the next few days

Method used

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  • A low-voltage power supply early warning system and method
  • A low-voltage power supply early warning system and method
  • A low-voltage power supply early warning system and method

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Experimental program
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Effect test

Embodiment 1

[0055] Such as figure 1 , 2 As shown, step 200 is executed, and the equipment file module 100 reads the equipment data through the data interface, and establishes the topological diagram of the power supply logic relationship of "household - station area - 10kV line - substation", and calculates the maximum allowable load capacity of each equipment attribute. Split processing and statistical storage of the monitoring point data. At least one of monitoring point data user data, station area data and 10kV line data, wherein the user data includes voltage, current and power; the station area data includes voltage, current, power, temperature and latitude and longitude; the 10kV line data includes The voltage, current and power of the first, middle and last stages.

[0056] Step 210 is executed, and the data collection module 110 performs data collection. According to the identification of each measuring point in the topology diagram of the power supply logic relationship, the ...

Embodiment 2

[0061] Such as image 3 As shown, the system is mainly composed of four major functional subsystems: power supply quality data acquisition is the basic source of platform data, which can integrate power supply quality data from multi-party distribution network power supply quality monitoring such as voltage monitoring system, harmonic monitoring system, and marketing system; Intelligently analyze the monitoring data to obtain the required power supply quality level information, including five modules: power supply quality assessment, power supply quality warning, harmonic power flow, disturbance source identification, and power supply quality trend prediction. Each module can cooperate with each other to analyze the result information Shared by other modules; the expert decision-making system provides technical support for practical applications such as power supply quality management and power supply planning for management departments. The power supply quality governance fee...

Embodiment 3

[0088] Such as Figure 4 As shown, the system consists of four functional modules: data acquisition module, data storage and processing module, low-voltage intelligent diagnosis module, and expert management strategy library; the data acquisition module automatically (timingly) collects distribution network SCADA system and metering automation through the data interface. System, voltage monitoring system, energy system and other monitoring point data are classified, processed and statistically stored; the low-voltage intelligent diagnosis module conducts multi-dimensional diagnostic analysis and summarizes low-voltage characteristics according to the data classified and processed in the previous period; the expert management strategy system follows The low-voltage feature data automatically retrieves the policy library, and automatically summarizes and outputs the current low-voltage problems in the station area, the main characteristics of low-voltage, governance principles, a...

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Abstract

The invention provides a power supply low-voltage early warning system and method, wherein the system includes an equipment file module, and also includes the following module: used to automatically and / or regularly read through the data interface according to the identification of each measuring point in the topology diagram of the power supply logical relationship Data acquisition module for each monitoring point data; data analysis module for data analysis based on the collected load data and power supply quality standards: used for the maximum load capacity of each device in the topological diagram of the power supply logic relationship and the collected load A low-voltage early warning module for data comparison; a GIS module for partition display based on low-voltage results and equipment latitude and longitude. The invention can greatly improve the efficiency of low-voltage control, improve the identification rate of low-voltage problems, standardize the means of low-voltage problem control, evaluate the effect of low-voltage control in real time, realize the economical operation of power grids in station areas, achieve energy saving and loss reduction, and improve the ability of power grid voltage regulation , Improve the quality of power supply and increase the voltage qualification rate.

Description

technical field [0001] The invention relates to the technical field of power grid management, in particular to a power supply low voltage early warning system and method. Background technique [0002] The national standard "Power Quality Power Supply Voltage Deviation" (GB / T 12325-2008) stipulates that the limit of the power supply voltage deviation is: the sum of the absolute value of the positive and negative deviations of the power supply voltage of 35kV and above shall not exceed 10% of the nominal voltage, 20kV The deviation of the three-phase power supply voltage up to and below is ±7% of the nominal voltage, and the allowable deviation of the 220-volt single-phase power supply voltage is +7% and -10% of the nominal voltage. The so-called "low voltage", that is, the voltage value at the user's metering device is lower than the lower voltage limit specified by the national standard for one hour. [0003] In addition to affecting the normal power consumption of customer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12
CPCH02J3/12
Inventor 虞晓骏谢松华陈鹏
Owner GUANGZHOU DIKO ELECTRONICS TECH
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