What are the new requirements for the application of security technology in smart grid construction?

The construction and development of the power industry is an important support for the country's economic development, and the smart grid is an important part of the power system. Its safe and efficient operation is related to the stability and security of the entire power system and even the people's livelihood. In order to accelerate the development of the national economy and meet people's demands for electricity and reliability of electricity use, the state has proposed grid reform as early as the 12th plan. At this stage, the state has increased its efforts to support the intelligent construction of the power grid.

Some time ago, the introduction of the development plan of Guangdong, Hong Kong and Macao Dawan District caused great sensation, and the construction of smart grid is an important part. It is reported that from 2018 to 2022, the power grid investment in the Pearl River Delta region will exceed 170 billion yuan, speeding up the planning of smart grid construction in Guangdong, Hong Kong and Macao Dawan District. The goal is to basically build a safe, reliable, green and efficient smart grid by 2022. Of course, not only Guangdong, Hong Kong and Macau, Dawan District, other provinces and municipalities are also stepping up the construction of smart grids to provide basic support for regional economic development.

Because the power industry is extremely demanding on production safety and stability, security equipment and systems were introduced earlier. However, the early security systems used in the power industry were mainly video surveillance applications, mainly defending power plants, substations and other places to prevent electricity. The facility was stolen and destroyed. At present, with the gradual landing of the concept of smart grid, the power industry has put forward some new requirements for the application of security technology.

First, strengthen the front-end collection function

In the early stage, the security system applied to the power industry focused on the security of “anti-theft and destruction” of power equipment, while ignoring the power environment, site temperature, fault alarm, remote remote control switch and other power environment or alarm information. Collection. Many related front-end acquisition equipment deployed in substations cannot meet the requirements of power operation, no matter the function and quality. Even many substations still need to arrange regular meter reading.

Most substations are in complex environments such as lightning strikes, corona, noise, and electromagnetic field interference. The requirements for monitoring facilities are high. The front-end surveillance cameras must have anti-riot characteristics to increase the adaptability in a constant temperature and humidity environment. At the same time, the front-end sensors that collect analog voltages such as temperature, humidity, current, voltage, and meters need to have high sensitivity, and different intervals can be set according to actual applications. In addition, the front end also needs to install some alarm signal acquisition equipment to collect relevant data and actively identify and analyze whether the transmission and transformation lines are leaking and short-circuiting, whether important equipment is flooded, whether there is fire or theft in the equipment room and warehouse, etc. And take the initiative to ensure that the power equipment can operate normally and safely under the constant environmental changes and long-term work.

Second, access to mobile video devices

Due to the high risk and safety risks of electric power workplaces, the inspection robots, the transmission line unmanned helicopter intelligent inspection system, and the access of mobile video equipment such as vehicles and individual soldiers can replace the manual “duty” to meet anytime and anywhere. Security requirements for monitoring and inspection of the internal and external parts of the substation.

Especially in the power ramps where there is accumulated water, dark light, insufficient ventilation, and even toxic and harmful gases, the inspection robot will play an important application value, and can replace the personnel for routine inspection to ensure the normal operation of the equipment in the power tunnel and prevent it. Illegal acts such as theft, private pulling of wires.

In addition, the robot fully utilizes the skills of “feeling, watching, smelling” through intelligent technology. For example, the infrared thermal imager can accurately sense the temperature of the power equipment, and can sense the temperature and humidity, smoke, and air in the air through various sensors. Specific gas (CO, O2, CH4, H2S...) concentration, etc., and the meter reading is monitored by the visible light camera to see the meter reading, and when a suspicious situation is found, it will automatically judge and alarm, and even the self-service fire extinguishing robot can extinguish the fire. .

Again, intelligent video analytics applications

It is well known in the industry that intelligent video analysis functions such as face recognition, motion detection, and zone detection are not new words in the security industry. They have been increasingly used in safe cities, finance, etc. However, intelligent video analysis functions are The application in the smart grid is still in the initial stage, but in the future, intelligent video analysis will be more combined with the application of power scene requirements, and it has the ability to adapt to the power field, and it can be more powerful.

According to a person in charge of a security industry security solution in the industry, the face recognition technology is embedded in the integrated monitoring system of the substation, and the face in the video stream is captured by the intelligent analysis server, and the recognition ratio is determined according to the pre-established face database. Equivalent, an alarm is issued as soon as an unrelated or illegal person is found.

Another person in the industry said that the intelligent meter reading and knife gate state analysis system was built in the substation, using video intelligent analysis technology to directly read the substation's on-site dial degree and analyze the opening and closing state of the knife gate, so that the video analysis technology is intelligent monitoring of the substation. A new application has been added.

Finally, each system is fused in parallel

The power industry security system includes many intelligent devices and systems such as video surveillance, environmental monitoring, fire protection, intelligent control, security perimeter, access control management and intelligent inspection. The back-end encoding processing equipment must integrate and manage the information of each subsystem such as video data, environmental data, power data, alarm data, etc., and realize linkage alarm between data, and establish a complete realization of substation equipment safety, personnel safety and environmental safety. The three-dimensional security control system ensures the safe, stable and reliable operation of the entire smart grid system. This is also the requirement for the application of security technology in power plants and substations. At the same time, the integration of security monitoring system and smart grid automation management system is also the innovation and development direction of security technology in large enterprises. The integration of the two can help the grid informationization, automation and interaction, provide a variety of auxiliary means for the network to reduce staff and increase efficiency, make the grid operation and maintenance more stable, and the protection is more secure, thus ensuring the development of the national economy and social progress for safe use of electricity. Strong demand.

to sum up:

Under the trend of strong support for smart grid construction in the country, according to the demand, security enterprises will have large-scale networked monitoring platforms, high-definition cameras, intelligent video analysis, robots and other high-end products with advanced technologies such as AI, Internet of Things and big data. Display space. Undoubtedly, the security system with monitoring as the model is becoming the smart weapon of the grid. In the future, it will participate more in the power safety production management, and contribute to improving the operation, management efficiency and power supply safety of the intelligent substation. (Author: Huang Wenfeng)