CN104701975A - Integrated monitoring system for low-voltage power distribution - Google Patents

Abstract

The invention relates to a power monitoring system, that is, a low-voltage power distribution comprehensive monitoring system. The low-voltage power distribution comprehensive monitoring system consists of a three-level network system consisting of a low-voltage power distribution monitoring center, a low-voltage power distribution comprehensive monitoring terminal and a collection terminal. Each centralized reading terminal on the bottom layer separately collects relevant parameters such as electric quantity, voltage, current, active power, reactive power, and power factor of the user’s electronic single-item meter in each meter box, and then uploads them to the low-voltage power distribution integrated monitoring terminal on the middle layer . The open architecture of the system is reflected in: providing multiple options on the hardware platform, operating system, and database management system platform; the system scale configuration is flexible, easy to expand, upgrade, and maintain; Standard data access interface. It is of great significance to accumulate online monitoring equipment operation experience and promote the further development of condition-based maintenance. In terms of management, it can also effectively save human resources, thereby improving efficiency and saving resources.

Description

Low-voltage power distribution integrated monitoring system

technical field

The invention relates to a power monitoring system, that is, a low-voltage power distribution comprehensive monitoring system.

Background technique

In the existing technology, with the continuous improvement of people's living standards and the continuous deepening of my country's power system reform, the power supply sector has gradually entered a new stage of market-oriented operation. People's demand for electricity is not only satisfied with electricity use, good power supply quality and service level have also become an important part of society's requirements for power supply enterprises. It is impossible to accurately measure the power consumption and line loss at the same time, to monitor the power quality in a timely manner and to effectively compensate reactive power, and to accurately predict the power load and real-time remote dispatch. Therefore, it is imperative to develop a standard and intelligent power parameter comprehensive monitoring system with the characteristics of low-voltage power distribution monitoring itself. the

Contents of the invention

The object of the present invention is to provide a low-voltage power distribution comprehensive monitoring system for power dispatching automation in view of the above-mentioned deficiencies. the

The technical solution of the present invention is: low-voltage power distribution integrated monitoring system, which consists of three levels: low-voltage power distribution monitoring center (upper Internet), low-voltage power distribution comprehensive monitoring terminal (middle-level GPRS network) and centralized copy terminal (bottom carrier/wireless network) Network system composition. the

Each centralized reading terminal on the bottom layer separately collects relevant parameters such as electric quantity, voltage, current, active power, reactive power, and power factor of the user’s electronic single-item meter in each meter box, and then uploads them to the low-voltage power distribution integrated monitoring terminal on the middle layer . the

The monitoring terminal stores, analyzes, assesses and manages the two sets of data, and transmits them as historical data to the upper low-voltage power distribution server through the GPRS public network for storage. the

The upper low-voltage power distribution server can change the configuration, preset and operation scheme of the middle low-voltage power distribution comprehensive monitoring terminal through GPRS communication, so as to realize the functions of remote adjustment, telemetry and remote signaling of field devices. the

The advantages of the present invention are: 1. The open architecture of the system is embodied in: multiple options are provided on the hardware platform, operating system and database management system platform, the system scale configuration is flexible, easy to expand, upgrade and maintain, and can be It integrates with other systems and provides a standard data access interface to the outside world. It is of great significance to accumulate online monitoring equipment operation experience and promote the further development of condition-based maintenance. 2. In terms of management, it can also effectively save human resources, thereby improving efficiency and saving resources. the

Detailed ways

The low-voltage power distribution comprehensive monitoring system consists of a set of low-voltage power distribution center, a set of low-voltage power distribution comprehensive monitoring terminal (middle-level GPRS network), centralized reading terminal (bottom carrier/wireless network) and user electronic single-item meter. Collected copying function Collected copying function is one of the main functions adopted by this system. The purpose is to achieve timely meter reading, avoid wrong copying, missing copying, estimated copying, etc., improve the measurement accuracy, and use efficient statistical analysis methods to solve the problem. It solves a series of problems such as meter reading difficulty, charging difficulty, statistical analysis and management difficulty, so as to effectively improve meter reading quality, meter reading efficiency and economic benefits. The centralized meter reading system needs to be popularized in a large area, and one of the key elements is to solve the problem of communication, that is, networking. The centralized copying part of the system adopts the combination of power carrier communication and wireless communication for centralized copying. Power carrier uses ready-made power lines for communication, and wireless communication uses radio frequency for wireless communication. These two methods eliminate the trouble of wiring and are suitable for various environments. In order to solve the problem that the power carrier and wireless are susceptible to environmental interference and cause the communication success rate to drop, we use an automatic routing algorithm designed by ourselves, which can automatically adjust the meter reading path according to changes in the environment, so that the entire system can collect data in time. the

Each centralized reading terminal on the bottom layer separately collects relevant parameters such as electric quantity, voltage, current, active power, reactive power, and power factor of the user’s electronic single-item meter in each meter box, and then uploads them to the low-voltage power distribution integrated monitoring terminal on the middle layer . At the same time, the monitoring terminal collects relevant parameters such as total power consumption, voltage, current, active power, reactive power and power factor on the substation. The monitoring terminal stores, analyzes and assesses two sets of data. And as historical data, it is uploaded to the upper low-voltage power distribution server through the GPRS public network for storage, making graphs, and further doing line loss analysis, load forecasting, voltage qualification rate assessment, power distribution planning, etc. The low-voltage power distribution comprehensive monitoring terminal also has reactive power compensation and distribution transformer anti-theft functions. The low-voltage power distribution server on the upper layer can change the configuration, preset, and operation plan of the low-voltage power distribution comprehensive monitoring terminal on the middle layer through GPRS communication. In this way, functions such as remote adjustment, telemetry, and remote signaling of field devices can be realized. the

The low-voltage power distribution monitoring center uses Windows 20003 SERVER as the operating system platform and MS SQL as the database platform. All applications are developed using VC++ and VB development tools. TCP/IP is used as the network communication protocol and the CLIENT/SERVER software structure is adopted. the

Claims (4)

1. A low-voltage power distribution comprehensive monitoring system, characterized in that it consists of a low-voltage power distribution monitoring center, a low-voltage power distribution comprehensive monitoring terminal and a three-level network system of centralized copying terminals. 2. According to the comprehensive monitoring system for low-voltage power distribution according to claim 1, it is characterized in that each centralized reading terminal at the bottom collects the electric quantity and voltage, current, active power and reactive power of the user's electronic single-item meter in each meter box respectively , and power factor and other relevant parameters, and then uploaded to the low-voltage power distribution integrated monitoring terminal in the middle layer. 3. According to claim 1 or 2, the low-voltage power distribution comprehensive monitoring system is characterized in that the monitoring terminal stores, analyzes and assesses two sets of data, and transmits the historical data to the upper low-voltage power distribution through the GPRS public network Server storage. 4. According to claim 4, it is characterized in that the low-voltage power distribution server of the upper layer can change the configuration, preset and operation scheme of the low-voltage power distribution comprehensive monitoring terminal of the middle layer through GPRS communication, thereby realizing remote adjustment, Telemetry, remote signaling and other functions.