CN203965567U - A kind of two distant electric power monitorings and Fault Quick Diagnosis system - Google Patents

Abstract

A kind of two distant electric power monitorings and Fault Quick Diagnosis system, it is made up of sensor group, on off state output device, current temperature display instrument, communication equipment and background server 5 major parts, and sensor group is arranged on the cable that needs monitoring; On off state output device is arranged on the position of switch or relay; Current temperature display instrument is arranged on is convenient to see the position of looking; Communication equipment is arranged on Special electric cabinet the inside conventionally; Background server is deployed in electrical network machine room; Sensor group is delivered to current temperature display instrument and communication equipment by the temperature collecting and current value by optical fiber transmission, the data that communication equipment receiving sensor group sends over, and gather on off state, then send to background server.The utility model is integrated in one the technology such as the present computer technology, communication network technology, can realize the real-time telemetry of an equipment distant place, remote signalling on power distribution network, is electric power monitoring and the diagnostic device of a kind of scientific structure, easy to use, handling safety.

Description

A Two-remote Power Monitoring and Fault Rapid Diagnosis System

Technical field:

The utility model relates to a two-remote power monitoring and fault rapid diagnosis system, which is a remote monitoring, display and alarm system for power network nodes and equipment in the power industry. The utility model belongs to the technical field of electric power monitoring and diagnosis equipment.

Background technique:

At present, in my country's electric power, the large-scale interconnection and the independent provincial power grid are interconnected, and there are more electric power and power station constructions, so that there are many hidden safety hazards and power failures in the power grid lines that cannot be detected and eliminated in time. In terms of detection and early warning of power failures, There are still many deficiencies and loopholes. The safe operation of power equipment is the first defense system to avoid major power grid accidents, and the normal and safe operation of power line node stations is one of the most critical core factors, and its safety requirements are obvious. Circuit accidents will not only cause their own losses but also interrupt the power supply, causing many unnecessary losses. In recent years, with the rapid development of electric power in my country, electric power equipment is affected by various factors, especially accidents such as insulation aging, leakage, high temperature and fire, which cause heavy losses.

Utility model content:

1. Purpose: The purpose of this utility model is to provide a two-remote power monitoring and fault rapid diagnosis system, which overcomes the shortcomings of the existing technology, integrates modern computer technology, communication network technology and other technologies, and can realize matching Remote real-time telemetry and remote signaling of equipment on the power grid meet the needs of the power distribution system in the direction of open, integrated and integrated comprehensive automation, and meet the actual equipment needs of my country's large-scale technical transformation of urban and rural power grids. It is a power monitoring and diagnostic equipment with scientific structure, convenient use and safe operation.

2. Technical solution:

Eryao is the abbreviation of telemetry (remote measurement) and remote signaling (remote signal). Eryao is the main data basis to establish a circuit node communication network, monitor data signals in real time, and achieve the purpose of real-time monitoring and rapid diagnosis and alarm.

A two-remote power monitoring and fault rapid diagnosis system of the utility model (hereinafter referred to as the system) is mainly composed of five major parts: sensor group, switch state output device, current temperature display instrument, communication machine, background server and so on. The positional connection relationship and signal direction between them are: the sensor group is installed on the cable to be monitored; the switch state output device is installed at the switch or relay; the current and temperature display is installed at a convenient viewing position; the communication machine is usually installed Inside the special electrical cabinet; the background server is deployed in the power grid computer room. The sensor group transmits the collected temperature and current values to the current temperature display instrument and the communicator through the optical fiber. The communicator receives the data sent by the sensor group, collects the switch status, and then sends it to the background server.

The sensor groups are cable temperature and current measurement sensors, and each group of sensors includes three cables of three-phase electricity and four sensors for zero-sequence current. A total of 24 sensors in 6 groups can be connected to the communicator through optical fiber at the same time.

The switch state output device is a device used to measure switch position signals, transformer fault signals, and action signals of protection devices. A total of 12 input states can be connected to the communicator through cables at the same time.

The current temperature display instrument is an optical fiber communication current temperature display instrument. It can display the temperature, current and fault data of four current temperature sensors at the same time. The current temperature display instrument is connected with the current temperature sensor through the optical fiber.

The communicator collects sensor group and switch state output device data, saves the data locally, and sends the data to the background server. The communication machine is composed of data acquisition board, communication module, local FLASH memory and power supply. The relationship between them is: the data acquisition board receives the temperature and current data sent by the sensor group and collects the status of each switch state output device. After packaging, it sends it to the background server through the communication module. At the same time, the communication opportunity backs up the data to the local FLASH memory. The power module provides power for the operation of the communicator, and can choose CT self-powered or 220V mains power supply. The data acquisition board is a dual-core board composed of a single-chip microcomputer and an FPGA. The FPGA is used to expand the communication interface for communication with the sensor group and the input interface for collecting switch state output device data. The single-chip microcomputer is used to process the received data; the communication module is The device used to communicate with the background server can support GPRS communication module, WIFI communication module, etc.; the local FLASH memory is 64M SPI type FLASH, which is used to store sensor group data, switch status output device data and device fault information, as needed It can be expanded to a larger capacity; the power supply is a device that provides working power for the above modules. It can be powered by CT or directly connected to 220V mains power supply. The power supply will convert the voltage from the two sources into the voltage required by the system.

The background server is a web server. The data of all sensor groups and switch status will eventually be sent to the server, which monitors the operating status of each power equipment through analysis and judgment, and indicates the location of the faulty equipment when a certain power equipment fails, and gives an alarm. The background server is the central system of the whole system.

The principle and working conditions of the utility model are briefly introduced as follows:

The sensor group periodically converts the collected current and temperature data into optical signals and sends them to the current temperature display and the communication machine respectively. Through the current temperature display instrument, the current, temperature data and fault information can be viewed intuitively in real time on site. After the communicator receives the data from the sensor group, it will store the received data in the internal memory. At the same time, the communicator will also continuously process up to 12 switching signals and store them in the internal memory. middle. The communicator also sends the data in the memory to the background server program in real time or regularly for further data processing.

3. Advantages and efficacy: The advantages of a two-remote electric power monitoring and fault rapid diagnosis system of the present invention are:

1) Realize two important features of telemetry and remote signaling.

2) Remote signaling plug-in with independent functions, the capacity can be configured according to requirements, the basic capacity is 12 channels, and can be expanded to any number of channels. SOE resolution is less than 2 milliseconds. The software anti-jitter time can be set from 10-60000 milliseconds, and the pulse width of binary input is greater than 5 milliseconds. Collect event sequence records and transmit them remotely.

3) Realize the monitoring and alarming of the two elements of current and temperature. Wide measurement range, current input nominal value: 1A-2500A; current sampling accuracy: 0.5 level (0.1 level can be achieved for special requirements); short-term excessive AC input current is applied to 2000% of the nominal value, and the duration is less than 1S, the system Normal work; 10 times the rated current measurement error <3%.

4) Intelligent judgment of fault current. Detect feeder faults, identify phase-to-phase faults, single-phase ground faults, etc., and actively report fault information to the master station.

5) The current temperature sensor adopts CT self-power.

6) The sensor group and the communicator, the sensor group and the temperature and current display instrument adopt optical fiber communication, and the communication is safe and reliable.

7) The temperature and current display instrument displays current and temperature data in real time, with low power consumption.

8) The communicator can support 6 groups of 24 current and temperature sensors at the same time.

9) The communicator can process 12 switching signals at the same time.

10) The communicator has a storage function. It can record all recent fault information and all sensor current and temperature data, and store historical data (fault information, SOE, fixed-point data, etc.) for more than six months, and can be expanded as needed.

11) The communication machine adopts the transmission regulations of DL/T 634.5101-2002 telecontrol equipment and system part 5-101 and the transmission regulation of D/T634.5104-2002 telecontrol equipment and system part 5-104.

12) The communicator supports CT power supply and 220V mains power supply.

13) The communicator uses super capacitors to store electricity to ensure that the data can be sent to the background server in time after power failure.

14) The communication machine supports GPRS remote communication, and the communication module supports all communication operators such as 2G, 2.5G, and 3G networks.

15) Configure GPRS communication device (including antenna). Configure 1 maintenance port, 1 serial communication port, and 1 RS485 port, which can be expanded to 4 serial communication ports as required. Support IEC608-70-5-101:2002, IEC60870-5-104 and other communication protocols to communicate with the master station and sub-station. With IEC608-70-5-101:2002, DNP3.0 supports balanced and unbalanced communication modes. Support for specific substation protocols.

16) The power consumption of the whole machine is low, the static power consumption of the whole machine is less than 1W, and the maximum power consumption of the whole machine is less than 5W.

Description of drawings

Fig. 1 is the structural representation of the utility model

Detailed ways

See Fig. 1, a two-remote power monitoring and fault rapid diagnosis system of the present invention (hereinafter referred to as the system) is mainly composed of five major parts: sensor group, switch state output device, current temperature display instrument, communication machine, background server, etc. The positional connection relationship and signal direction between them are: the sensor group is installed on the cable that needs to be monitored; the switch state output device is installed at the position of the switch or relay; the current and temperature display is generally installed at a convenient viewing position; It is installed in a special electric cabinet; the background server is deployed in the power grid computer room. The sensor group transmits the collected temperature and current values to the current temperature display instrument and the communicator through the optical fiber. The communicator receives the data sent by the sensor group, collects the switch status, and then sends it to the background server.

The sensor groups are cable temperature and current measurement sensors, and each group of sensors includes three cables of three-phase electricity and four sensors for zero-sequence current. A total of 24 sensors in 6 groups can be connected to the communicator through optical fiber at the same time.

The switch state output device is a device used to measure switch position signals, transformer fault signals, and action signals of protection devices. A total of 12 input states can be connected to the communicator through cables at the same time.

The current temperature display instrument is an optical fiber communication current temperature display instrument. It can display the temperature, current and fault data of four current temperature sensors at the same time. The current temperature display instrument is connected with the current temperature sensor through the optical fiber.

The communicator collects sensor group and switch state output device data, saves the data locally, and sends the data to the background server. The communication machine is composed of data acquisition board, communication module, local FLASH memory and power supply. The relationship between them is: the data acquisition board receives the temperature and current data sent by the sensor group and collects the status of each switch state output device. After packaging, it sends it to the background server through the communication module. At the same time, the communication opportunity backs up the data to the local FLASH memory. The power module provides power for the operation of the communicator, and can choose CT self-powered or 220V mains power supply. The data acquisition board is a dual-core board composed of a single-chip microcomputer and an FPGA. The FPGA is used to expand the communication interface for communication with the sensor group and the input interface for collecting switch state output device data. The single-chip microcomputer is used to process the received data; the communication module is The device used to communicate with the background server can support GPRS communication module, WIFI communication module, etc.; the local FLASH memory is 64M SPI type FLASH, which is used to store sensor group data, switch state output device data and device fault information. It can be expanded to a larger capacity; the power supply is a device that provides working power for the above modules. It can be powered by CT or directly connected to 220V mains power supply. The power supply will convert the voltage from the two sources into the voltage required by the system.

The background server is a web server. The data of all sensor groups and switch status will eventually be sent to the server, which monitors the operating status of each power equipment through analysis and judgment, and indicates the location of the faulty equipment when a certain power equipment fails, and gives an alarm. The background server is the central system of the whole system.

Claims (1)

1. A two-remote electric power monitoring and rapid fault diagnosis system, characterized in that it is composed of sensor groups, switch state output devices, current and temperature display instruments, communication machines and background servers, and the sensor groups are installed in the monitoring areas. on the cable; the switch state output device is installed at the position of the switch or relay; the current and temperature display is installed at a position convenient for viewing; the communication machine is usually installed in a special electric cabinet; the background server is deployed in the power grid room; The temperature and current values are transmitted to the current temperature display instrument and the communicator through the optical fiber, and the communicator receives the data sent by the sensor group, collects the switch status, and then sends it to the background server; The sensor group is a cable temperature and current measurement sensor, each group of sensors includes three cables of three-phase electricity and four sensors for zero-sequence current, and 6 groups of 24 sensors are connected to the communication machine through optical fibers at the same time; The switch state output device is used to measure the switch position signal, the transformer fault signal, and the action signal of the protection device, and a total of 12 input states are connected to the communication machine through cables at the same time; The current temperature display instrument is a kind of optical fiber communication current temperature display instrument, which simultaneously displays the temperature, current and fault number of four current temperature sensors, and the current temperature display instrument is connected with the current temperature sensor through an optical fiber; The communicator collects sensor group and switch state output device data, saves the data locally, and sends data to the background server; the communicator is composed of a data acquisition board, a communication module, a local FLASH memory and a power supply, and the data acquisition board receives The temperature and current data sent by the sensor group collects the status of each switch state output device, and after packaging, it is sent to the background server through the communication module. At the same time, the communication opportunity backs up the data to the local FLASH memory, and the power module provides power for the operation of the communication machine. Choose CT self-power supply or 220V mains power supply; the data acquisition board is a dual-core board composed of single-chip microcomputer and FPGA. To process the received data; the communication module is a device used to communicate with the background server, and can support GPRS communication module and WIFI communication module; the local FLASH memory is 64M FLASH, which is used to store sensor group data and switch status output device Data and equipment failure information; the power supply is the equipment that provides working power for the above modules, and it uses CT to take power or directly connects to 220V mains for power supply. The power supply will convert the voltage from the two sources into the voltage required by the system; The background server is a network server, and the data of all sensor groups and switch states will eventually be sent to the server, and the server can monitor the operating status of each electric device through analysis and judgment, and indicate the location of the faulty device when a certain electric device fails. And call the police.