CN204177912U - Based on Distribution Network Failure early warning and the positioning system of GIS application - Google Patents

Abstract

The utility model discloses a distribution network fault early warning and positioning system based on GIS application, which comprises: a plurality of fault indicators arranged on cables or overhead lines and a data collector arranged in a power transmission line base station. The collector receives the radio frequency signal emitted by the fault indicator and converts it into a GPRS/GSM signal to communicate with the central station; The control station is connected, and the main control station communicates with the GIS system of the power grid through TCP/IP; it also includes an administrator terminal, and the administrator terminal receives the information sent by the central station. The utility model has a practical, advanced and safe intelligent distribution network fault location system based on GIS, which provides differential line monitoring data information for the SG186 production management system.

Description

Distribution network fault warning and positioning system based on GIS application

Technical field:

The utility model relates to a distribution network fault early warning and positioning system based on GIS application.

Background technique:

With the advancement of the national smart grid construction strategy, large-scale intelligent construction of distribution networks with multiple points, wide areas and large equipment differences will face the problem of huge capital investment. So far, the pilot construction of distribution network automation in the past two decades still covers less than 8% of the power supply area. Traditional distribution network automation solutions require large investment, low cost performance, high requirements for primary equipment, long construction period, and difficult maintenance. Widespread promotion. With the construction of the national smart grid and the rapid advancement of the "three sets and five majors" of the State Grid Corporation of China, it is imperative to build a large-scale intelligent distribution network.

At present, distribution network automation systems are basically built in various network provinces, and they have also played an important role as expected. However, various factors such as design and cost have limited the benefits of the automation system and the detection objects. There is an urgent need for a cost-effective, Safe and effective monitoring equipment and application systems are used to supplement and improve the automation system, which is the fault location system and fault indicator equipment.

Invention content:

In order to overcome the defects of the existing technology, the purpose of this utility model is to provide a distribution network fault early warning and positioning system based on GIS application, according to the relevant guidance documents of the State Grid Corporation and the research results of the project, from the physical structure, data structure, technical structure , Function deployment, interface implementation, software platform configuration and security system are designed, and a practical, advanced and safe GIS-based intelligent distribution network fault location system is built to provide differential line monitoring data information for the SG186 production management system.

The utility model solves the technical problem and adopts the following technical solutions:

Distribution network fault warning and positioning system based on GIS application, which includes:

A plurality of fault indicators installed on cables or overhead lines and a data collector installed in the power transmission line base station, the collector receives the radio frequency signals emitted by the fault indicators and converts them into GPRS/GSM signals and communicates with the central station communication;

The central station is set in the monitoring machine room, and the central station is connected with the master control station located in the distribution network monitoring machine room through the RS232 serial port, and the master control station communicates with the GIS system of the power grid through TCP/IP;

An administrator terminal is also included, and the administrator terminal receives the information sent by the central station.

The collector includes a GPRS module, a conversion module connected with the GPRS module, a radio frequency transceiver module connected with the conversion module, the radio frequency transceiver module of the collector and the radio frequency transceiver module of the fault indicator Communication, the GPRS module transmits the radio frequency signal emitted by the fault indicator to the central station.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

Distribution network equipment has the characteristics of large number, wide coverage, multiple voltage levels, complex wiring, frequent equipment changes, and huge amount of basic data information. With the development of social economy and the improvement of people's quality of life, people put forward higher and higher requirements for power supply reliability, power quality and service quality. The operation of the system will greatly improve the predictability and preventability of faults in distribution network equipment. When the operating parameters of the equipment are abnormal, it can automatically prompt and alarm, avoiding the fact that faults in the past must be found by manual inspections or feedback by power users dialing 95598, resulting in emergency repairs. Delay, greatly improve the normal working cycle and stability of power supply equipment, reduce power outage time and frequency, thereby enhancing the reliability of distribution network operation, reducing the occurrence of power outage accidents in distribution network, meeting the needs of modern society for power supply reliability, and significantly improving power enterprises. social image, and achieved great social benefits.

Description of drawings:

Fig. 1 is the overall configuration diagram of the system of the utility model; Fig. 2 is a schematic diagram of the communication between the fault indicator and the collector; Fig. 3 is the system configuration of the utility model.

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways:

Embodiment: This embodiment is based on the distribution network fault early warning and positioning system of GIS application, which includes:

A plurality of fault indicators installed on cables or overhead lines and a data collector installed in the power transmission line base station, the collector receives the radio frequency signals emitted by the fault indicators and converts them into GPRS/GSM signals to communicate with the central station, The collector is located in the power control box near the fault indicator;

The central station is set in the monitoring machine room, and the central station is connected with the master control station located in the distribution network monitoring machine room through the RS232 serial port, and the master control station communicates with the GIS system of the power grid through TCP/IP;

An administrator terminal is also included, and the administrator terminal receives the information sent by the central station.

As shown in Figure 2, the collector includes a GPRS module, a conversion module connected with the GPRS module, a radio frequency transceiver module connected with the conversion module, the radio frequency transceiver module of the collector and the fault indicator The wireless radio frequency transceiver module communicates, and the GPRS module transmits the radio frequency signal emitted by the fault indicator to the central station.

In specific facilities, the utility model system is composed of several monitoring nodes, a monitoring center and a communication system. The monitoring node is composed of a collector and one or more groups of fault indicators, and is responsible for collecting and uploading information such as remote signaling and telemetry. The monitoring center is composed of the main station system, the central station, etc. It is responsible for collecting and storing remote signaling and telemetry data. When a fault occurs, the main control station calls the GIS platform topology service to analyze the fault location and transmits the fault information to Other business management systems. The communication system uses GPRS, GSM, radio frequency signal, and Internet technology to realize the communication among various hardware such as fault indicators, collectors, and central stations.

The communication system is divided into: a short-distance wireless transmission system based on radio frequency signals between the fault indicator and the collector, a remote transmission system based on GPRS, GSM, etc. between the collector and the central station, and a remote transmission system based on RS232 serial port information transmission system, the system main control station communicates with the GIS platform and other business systems through the TCP/IP power intranet.

Detection node: Each monitoring node is composed of several groups of fault indicators and collectors. Each group of overhead fault indicators includes 3 short-circuit and grounding two-in-one fault indicators, and each group of cable line fault indicators includes 3 short-circuit fault indicators and one ground fault indicator. Each fault indicator has fault detection, radio frequency communication, and battery management functions. The fault indicator is powered by a dry battery. When the line is running normally, the fault indicator is in a sleep standby state. When the monitored line fails, the fault indicator on the corresponding phase transmits a radio frequency signal according to its own address code and information code. Collectors within the receiving range will forward the information through the public GSM/GPRS system after receiving the signal. One collector can receive radio frequency signals of multiple groups of fault indicators at the same time, and the maximum coverage of the collector can reach a diameter of 300 meters. The collector can be powered by solar panels or 220V power supply, and a lithium battery is used as a reserve power supply.

The monitoring center is composed of the system master control station, central station and other parts. The central station is installed in the monitoring machine room, connected to the system main control station through the RS232 interface, used to receive the information sent by the collector, and send the relevant alarm information to the administrator terminal in the form of SMS; the system main control station is installed in the distribution network monitoring The computer room, after receiving the information transmitted by the central station terminal, analyzes the content of the information, integrates with the grid GIS platform, makes a corresponding display on the geographic information map, and sends an alarm short message to the administrator through the central station, and at the same time manages the information for other businesses. The system provides relevant data.

In actual implementation, the system is mainly installed at substation outgoing lines, important branch lines, and important power equipment. Each line is equipped with a set of monitoring points (a total of 3) to realize remote monitoring and fault location of these points. When the faulty node detects When the fault condition occurs, it sends its own address and fault cause to the periphery. When the peripheral node receives the data, it first checks whether it exists on the same fault line and has the same fault cause. If there is the same line and the same cause of failure. That is to add its own address and the cause of the failure into the message queue and send it again. When the collector receives the information, it will send the information to the monitoring center through the GSM network in the form of SMS or GPRS. This message will activate the application program of the monitoring center, prompting the administrator of the faulty line and the cause of the fault. Then the monitoring center invokes the topology analysis function of the fault point of the power grid GIS platform. Combined with the fault indicator topology on the GIS graph, the fault point is judged. The fault point analysis rules are as follows: search from the power supply end, search for the last faulty fault indicator, and the power supply range of this fault indicator (up to each branch The first fault indicator, the branch without a fault indicator installed, the entire branch is the fault range), that is, the fault line area. For fault information, provide positioning and key coloring functions, display fault sections and related indicator devices in different colors, and inform users which section of the line the specific fault occurs on. The user uses the positioning function to realize the positioning and display of the corresponding fault information on the whole network map based on the geographical model information.

The effect of this system implementation is shown in the table below:

Claims (2)

1. A distribution network fault early warning and positioning system based on GIS applications, characterized in that it includes: A plurality of fault indicators installed on cables or overhead lines and a data collector installed in the power transmission line base station, the collector receives the radio frequency signals emitted by the fault indicators and converts them into GPRS/GSM signals and communicates with the central station communication; The central station is set in the monitoring machine room, and the central station is connected with the master control station located in the distribution network monitoring machine room through the RS232 serial port, and the master control station communicates with the GIS system of the power grid through TCP/IP; An administrator terminal is also included, and the administrator terminal receives the information sent by the central station. 2. The distribution network failure early warning and positioning system based on GIS application according to claim 1, wherein the collector includes a GPRS module, a conversion module connected with the GPRS module, a connection module connected with the conversion module A radio frequency transceiver module, the radio frequency transceiver module of the collector communicates with the radio frequency transceiver module of the fault indicator, and the GPRS module transmits the radio frequency signal emitted by the fault indicator to the central station.