總體架構

With the continuous development of smart power grid, power supply and distribution security has gradually come into people's vision. Traditional manual inspection is incompatible with the current construction of intelligent distribution room. A kind of intelligent and efficient environment monitoring system of distribution room (distribution room moving ring system) has become an important link in the construction of smart power grid.

The distribution room environment control system is mainly composed of environmental monitoring, equipment status monitoring, video monitoring, security monitoring, electrical fire monitoring and other functions. By using the Internet of Things, computer, video processing, sensor and other technologies, the electrical equipment environment and operation data in the power distribution room are sent to the cloud monitoring platform through the switch and the mobile monitoring host, and the data is sent to the mobile APP of the operation and maintenance personnel, realizing equipment monitoring and linkage operation.

The environmental monitoring system of the power distribution room realizes the functions of electric quantity collection, ozone monitoring, anti-theft monitoring, fire monitoring, main transformer temperature monitoring, access control, lighting control, water level monitoring, video monitoring, voice prompt reporting, risk control, air conditioning control, dehumidification control, water pump control, remote reporting, telemetry, remote communication, remote control and so on.

Distribution power station of expressway provides reliable and stable power supply for operation and management of expressway. Once problems occur in distribution power station, the normal use of expressway communication system, monitoring system, charging system, power supply and distribution system, lighting system and ventilation system will be affected, with unimaginable consequences.

The toll station, service area and tunnel station of the expressway are all equipped with corresponding distribution power stations. The distance between each distribution power station is far away and the distribution is scattered. The inspection and operation and maintenance only rely on manual means, which not only costs high, but also fails to find problems in time and has poor efficiency, which affects the guarantee effect of the power system.

According to the characteristics of the distribution power station on the highway, the solution of integrated security measurement and control and power environment remote monitoring is designed. The content covers: power supply and distribution, UPS, battery, switching power supply, air conditioning, temperature and humidity, access control, fire protection, lightning protection, video, network and so on. Improve operation and maintenance efficiency, ensure the safety of highway distribution power station.

Program objective

It provides an overall solution of power environment monitoring for distribution power stations of highway toll stations, service areas and tunnel stations, realizing five functions of centralized real-time monitoring, remote maintenance and management, fault warning and notification, historical data query and unattended.

Scheme introduction

Hangzhou Lingqi Highway distribution power station power environment monitoring solution integrates hardware and software. Based on ARM architecture, Linux operating system, B /S mode and convenient embedded WEB service mode, the monitoring content covers power supply and distribution, switching power supply, environmental monitoring, UPS, security monitoring and other contents. Based on the power environment monitoring scheme of the distribution power station on the upper expressway, the centralized real-time monitoring, remote operation management, fault warning and notification, historical data query and unattended computer room are realized.

Online monitoring, sensor technology, digital processing technology and wireless communication technology are adopted to realize remote online monitoring and monitoring of the running state of the power equipment and the environment around the equipment through a variety of sensors and field monitoring devices installed on the power equipment. When the power equipment fails or the field is abnormal, The environment monitoring system of the distribution room can automatically collect information in the first time, and send monitoring information (data, voice, video, etc.) and alarm information to the cloud platform, so that the operation and maintenance personnel can know the running status of the equipment in time without having to go to the site, providing reliable guarantee for the power supply of the distribution room.

The traditional environmental monitoring of the distribution room is mainly carried out by the staff to measure and inspect the distribution devices one by one. As a result, it is time-consuming and costly, which can neither reflect the real situation nor solve practical problems in time. The environmental monitoring and control system of the intelligent distribution room is mainly composed of environmental monitoring, equipment status monitoring, video monitoring, security monitoring, electrical fire monitoring and other functions. It mainly realizes the real-time collection and processing of environmental data such as temperature, humidity, SF6 gas, smoke and cable ditch water level in the distribution room. Real-time acquisition and processing of the running state of switchgear, transformer and other equipment; Save remote images of power equipment operation, equipment operation and site environment, and upload them to the unified monitoring cloud platform for visual display and monitoring; Collect electrical fire monitoring system data in real time and upload the data to the unified monitoring cloud platform.

Advantages and characteristics

Q/GDW 1517.1 -- 2014 Video Surveillance System and Interface Part I: Technical Requirements, the enterprise standard on video surveillance promulgated by State Grid Corporation in May 2015, is based on Part B of the standard interface, in order to meet the functional requirements of the auxiliary integrated monitoring system of substation, some necessary extensions are made. It is required that the interface standard should pass the State Grid video surveillance standard test of China Academy of Electrical Science and Technology or State Grid Institute of Electrical Science and Technology, and provide a passing report.

This system requires the use of "Q/GDW 1517.1-2014 Power Grid Video Monitoring System and Interface Part I: Technical Requirements" SIP protocol as the video part of the communication interface protocol, video data (including image intelligent analysis data, remote video license) are connected to the auxiliary integrated monitoring host of the substation.

This system requires the substation security subsystem, fire subsystem, power environment subsystem, lighting air conditioning fan control subsystem, a key to pass subsystem, guard registration are connected to the substation station integrated monitoring host, communication protocol IEC103 protocol.

Auxiliary integrated monitoring host

The auxiliary integrated monitoring host integrates the substation's intelligent multidimensional video subsystem, security subsystem, fire subsystem, power environment subsystem, lighting air conditioning fan control subsystem, infrared thermal imaging temperature measurement subsystem, one key pass, guard registration and other information of the substation's physical area data, online monitoring data, primary equipment and secondary equipment operation data into a unified whole The station monitoring management platform can complete intelligent image recognition analysis, process and analyze all video information and data information of the station, build an integrated monitoring management platform with complete monitoring and display functions, and provide a complete and independent monitoring and display client at the station. The auxiliary integrated monitoring host (MVU) transmits various videos, data, information, signals and alarms required by the master station to the master station, and receives and executes various instructions and data issued by the master station to realize all functions and linkage functions of each system.

Security subsystem, fire subsystem, power environment subsystem, lighting air conditioning fan control subsystem, one key pass, guard registration using IEC61850 protocol access to the station terminal auxiliary integrated monitoring host (MVU), and in the auxiliary integrated monitoring host (MVU) centralized display.

Relevance shows the realization of comprehensive monitoring of the target

The correlation display technology is used to combine all the image information, power environment information, safety fire information, key access information, equipment operation information, equipment temperature information and other contents associated with the monitoring target on the same page, which can do the overall and all-round monitoring, research and judgment of the monitoring target.

The image correlation display of equipment is required to take the primary equipment of the substation as the unit to realize the correlation display of all images, instrument readings, power environment, lighting control, air conditioning control, fan control, related security information, fire information and so on for each primary equipment of the substation. It is to display all the image information related to the equipment (multi-angle pictures of different cameras), equipment working status information, intelligent analysis data of the equipment, environmental information of the area where the equipment is located (temperature and humidity), fire protection equipment information of the area where the equipment is located (electronic fence, infrared radiation, fire alarm), etc., on the same page. Ensure that staff can fully grasp all equipment status information.

White light night vision achieves color image acquisition without light condition

For the conventional video surveillance system installed in substation, satisfactory monitoring images cannot be obtained at night or without illumination. This specification requires that the outdoor gimbal camera installed in substation must use LED white light to fill light, and the LED white light can rotate up and down synchronously with the camera. To ensure that the camera can monitor clear and colorful on-site images at night or without lighting conditions, so as to enhance the actual effect of on-site monitoring of the substation. The LED white light can be automatically turned on and off according to the lighting situation (automatically turned off when the light is enough, automatically turned on when the light is insufficient). Meanwhile, the LED white light can also be controlled at the station and far away.

Intelligent analysis, real-time monitoring and intelligent alarm of all substation instruments

This system requires all the meters of the substation for all, accurate monitoring, requires the system to carry out intelligent analysis according to the video image, real-time acquisition of the digital amount of each meter reading in the substation, the meter reading exceeds the warning value, the system intelligent alarm prompt, and according to the functional analysis of each meter data to form a trend chart.

Intelligent video analysis

Substation auxiliary comprehensive monitoring system requires intelligent analysis function at the substation terminal to realize intelligent analysis of substation instrument reading, circuit breaker and isolation switch turn-on indicator, switch cabinet turn-off indicator and isolation switch contacts in place and in place, and upload the analysis results.

On-line infrared thermal imaging or thermal sensor monitoring equipment or ambient temperature monitoring

Substation auxiliary comprehensive monitoring system requires that online infrared thermal imager or thermal sensor camera and analysis software be installed at the substation terminal, which can remotely rotate the infrared thermal imager or thermal sensor camera up and down, left and right to monitor different targets. Visible light images, temperature data and temperature images of monitoring targets can be obtained in real time. Analyze and judge the detected infrared thermal imaging or thermal sensitivity imaging, form temperature record and curve record, send alarm signals when the temperature warning value is exceeded, and upload the record, curve and alarm signal to the main station in real time. When the temperature is abnormal, intelligent alarm is given and the camera is linked for multi-screen and multi-angle video display and combined with thermal imaging and thermal sensitivity display.

Track monitoring technology for equipment dense occasions

Some special areas of substations are not suitable for installing multiple cameras due to various reasons such as small monitoring Angle, narrow space or dangerous environment.

The auxiliary integrated monitoring system of substation requires the installation of track cameras and related control software in various protection rooms, 10kV switch rooms and 35kV switch rooms of the substation. The track cameras can be controlled and operated remotely, and all monitoring information on each control (protection, high voltage) cabinet can be obtained in real time. The track monitoring camera must be able to move in both horizontal and vertical directions to ensure that there are no dead corners for monitoring targets.

The camera installed on the track must come with LED white light, which can be raised and lowered, moved horizontally, rotated left and right, so as to ensure a colorful and clear monitoring image at night.

Substation terminal hardware basic configuration

Video equipment of substation auxiliary integrated monitoring system (such as camera, NVR, DVR, etc.) should adopt the same brand of video equipment, and should be the products of domestic mainstream brands. The main equipment configuration of substation auxiliary integrated monitoring system includes:

Infrared gun camera Camera (perimeter, gate)

High Speed infrared Network Ball Machine (Indoor)

High Speed infrared Network Ball Machine (Outdoor)

Multi-view panoramic network camera

Explosion-proof network ball machine

Main control building foyer infrared ball machine

White light high speed integrated gimbal camera

License plate recognition camera

Thermal responsive camera

Orbital camera

Integrated monitoring of the host MVU

Video processing unit (network video Recorder NVR)

Three-phase dual power switcher