With the continuous advancement of China's power industry, there is a growing demand for the efficient operation of major equipment in power transmission and transformation enterprises, as well as for the professional performance of personnel. To meet these demands, power transmission and distribution companies have adopted modern management techniques such as remote monitoring, telemetry, and communication systems. These innovations enable real-time observation and improve the level of production automation. Through substation security and video surveillance systems, operators can remotely monitor equipment conditions and staff activities, receive real-time alarm notifications, and review past incidents via video recordings.
In recent years, the development of smart grids has become a central focus in China's power system industry. Smart substations play a crucial role in this transformation. An intelligent substation is an advanced, reliable, integrated, low-carbon, and environmentally friendly system that digitizes station information, networks the communication platform, and standardizes data sharing. It automatically performs functions such as data acquisition, measurement, control, protection, and monitoring, while supporting advanced capabilities like real-time grid control, intelligent adjustment, online analysis, and collaborative decision-making. The networking, digitization, and automation of smart substation management are key trends in the power industry, with unattended operation and integrated safety management being essential for grid modernization.
Security video surveillance has long been used in the power sector due to the widespread geographical distribution of transmission substations, which often cover hundreds or even thousands of square kilometers. Network-based video monitoring is therefore critical. Power companies have utilized 2M dedicated communication lines to facilitate video surveillance, and early systems were known as substation remote image monitoring systems. Over time, these systems have evolved beyond simple video surveillance to include perimeter protection, environmental monitoring, lighting control, access control, and fire detection integration.
Nanjing Nanzi Information Technology Co., Ltd. has developed its own substation remote vision systems, video and environmental monitoring systems, and smart substation integrated auxiliary monitoring solutions. These products have full intellectual property rights and are widely deployed across nearly 10,000 substations in China, covering voltage levels from 750kV down to 35kV.
Traditional substation security and video surveillance systems primarily rely on analog video surveillance to provide remote monitoring of equipment and environments. They also integrate features such as perimeter protection, intrusion detection, environmental monitoring (temperature, humidity, smoke, flood), and alarm linkage.
With the adoption of the IEC 61850 standard and the use of photoelectric transformers, smart grid research and pilot projects have gained momentum in China. The concept of digital intelligent substations has been implemented in practice, with several digital intelligent substations already built nationwide.
A digital intelligent substation converts all station information from analog to digital, establishing a communication network and system. Its automation structure is physically divided into intelligent primary equipment and networked secondary equipment, and logically into three levels: process level, bay level, and station control level. The new digital substation includes signal acquisition systems, digital relay protection, integrated automation, and smart auxiliary systems like video and environmental monitoring.
China’s power companies are mainly composed of five power generation groups and two major grid companies—State Grid Corporation of China and China Southern Power Grid. The application of intelligent substation auxiliary systems has seen significant progress within both companies. State Grid promotes an integrated monitoring platform, while China Southern Power Grid focuses on video and environmental monitoring systems.
The Smart Substation Integrated Auxiliary Monitoring Platform, primarily used by State Grid, consists of seven subsystems: video monitoring, environmental monitoring, intelligent control, security, access control, fire control, and remote linkage. The video surveillance subsystem uses cameras, video processing units, and lightning protection devices to capture and compress video and audio data, which are then stored locally or uploaded to a master station through an integrated network. Intelligent analysis enables real-time monitoring of critical areas, tracking of anomalies, and quick alerts during emergencies.
The power environment monitoring subsystem includes temperature and humidity sensors, SF6 detectors, wind speed sensors, flood detectors, air conditioning controllers, and more. The intelligent control subsystem manages auxiliary facilities like lighting, ventilation, and drainage, allowing both local and software-based control, withè”动 based on environmental and alarm data.
The security guard subsystem includes infrared alarms, electronic fences, and key alarms, enhancing the effectiveness of video surveillance. The access control subsystem prevents unauthorized entry, recording every access event. The fire-fighting subsystem communicates with the fire control host, and the four remote linkage subsystems support video linkage during remote operations or accidents.
The Smart Substation Video and Environmental Monitoring System, mainly applied in China Southern Power Grid, follows technical specifications set by Guangdong Power Grid. These standards define communication protocols, video codecs, and streaming formats, ensuring interoperability between different manufacturers' devices.
Finally, the Grid Security Video Surveillance Integrated Management Platform provides networked management of multiple substation systems across a region, supporting a multi-level architecture from substation to provincial platforms. This ensures centralized control, efficient monitoring, and enhanced security across the entire power grid.
Torsion Spring,Double Torsion Spring Torque,Double Torsion Spring,Heavy Torsion Spring
Dongguan Jiufukai Hardware Products Co., Ltd , https://www.jfkspring.com