State Grid Provides Secured Power Supply for CIIE, Serving Shanghai's Role as Lounge to Meet Global Friends
The second China International Import Expo (CIIE) will be held in Shanghai from November 5 to 10. As one of the important supporting organizations, State Grid Shanghai Electric Power Company has been actively constructing the Internet of Things in Electricity (IOTE), and promoting the transition of the power supply from “equipment-centered” to “data-centered”.
Relying on the achievements of the IOTE, Shanghai Electric Power Company will strive to realize the goal of “Six Zeroes and Three Ensures” － “zero power grid equipment defects, zero flashing of important load, zero power supply service complaints, zero security and terrorism events, zero human errors, zero network information security vulnerabilities” and “to ensure the power supply of the venues, the urban infrastructure, and for Shanghai’s production and daily life”, in an effort to guarantee power supply for the second CIIE.
IOTE: Enabling A More Intelligent and Comprehensive Power Supply
Since this year, Shanghai Electric Power Company has been meticulously implementing State Grid’s strategy of building a world-class energy internet company with "Three Functions and Two Networks", actively exploring the application of modern information technology such as mobile communications and artificial intelligence, promoting the Internet of Things and human-computer interaction throughout the power grid, and building comprehensive status awareness, efficient information processing and an swift and flexible IOTE, in an effort to upgrade the power supply of the CIIE to an “intelligent operation”.
The transition from equipment management to data management represents the most profound change brought about by the IOTE for the CIIE power supply. A data-centered system can identify equipment defects faster and more accurately, as well as the vulnerabilities of power grid operations, and then rectify them in a targeted way, thus significantly improving the efficiency and capability of the power grid.
Taking safety of key transmission lines as an example, visual monitoring devices can automatically identify the hidden risks in cranes, bulldozers, excavators and issue early warnings; distributed optical fiber vibration monitoring devices can record real-time cable vibrations, and quickly determine the location of the fault or hidden risk accordingly; the intelligent manhole cover will monitor environmental data in the cable well in real time, which will effectively guarantee the safety of the cable channel while providing a reference for repair personnel operating underground.
Apart from transmission lines, power grids around the site of CIIE have also been equipped with smart sensing devices, and IOTE has even made its way to customers. Robots make round-the-clock inspections on various status indicators of the switch cabinet in the substation; auxiliary control systems not only accurately obtain the position of the personnel in each substation, but also monitor temperature, humidity, fire risk and technical indicators therein; all substations of the National Convention and Exhibition Center in Shanghai are equipped with smart cameras, smart monitoring terminals and smart locks, which can help operation and maintenance staff to remotely monitor equipment and ensure its security.
The massive amount of data from the Internet of Things is also beneficial to distribution, sharing and analysis. Key information and data such as those of main power stations, lines, customers and resources in core power supply areas is collected and then relayed to the power supply command system visually, allowing for a “panoramic view” of the equipment state.
Meanwhile, Shanghai Electric Power Company has built a management and Internet of Things platform and a big data platform. Through the use of algorithms such as multidimensional statistical analysis, machine learning, and multi-layer neural network deep learning, the company has also established a data-driven state evaluation model as well as a fault diagnosis and prediction model to realize “holographic judgment” of the power grid.
More importantly, the IOTE promotes the interconnection of the underlying data of the power grid, which lays a solid foundation for the “one schema” management of the power supply. Through applications such as the accurate location of faults, automatic analysis of power failure impact range, and analysis of user load on heavy overload, precise “full control” can be actualized in the fault management of the power grid.
New Standards: A More Efficient and Resilient Power Supply
Despite successfully securing the power supply for the first CIIE, Shanghai Electric Power Company did not cease to advance. Instead, various new technologies has allowed the entire company to realize that the existing power supply model requires further innovation and optimization. Since the beginning of this year, based on experience of the first CIIE, the company has standardized the grid security from five aspects － the organization system, command system, emergency system, technical system and operations system, forming new standards of power supply based on the IOTE which services Shanghai’s role as "a lounge to meet global friends".
Based on such standards, Shanghai Electric Power Company has established a power supply command system consisting of one general headquarters, three frontline headquarters and 20 primary level emergency command centers. At the same time, an emergency system comprised of one resource supply base, three high-voltage repair bases, 11 power supply companies and 173 grid-based power supply locations is ready to deal with all kinds of power grid emergencies.
In terms of the technical system, such standards specify the configuration standards of the monitoring equipment of the Internet of Things and the information and communication support standards of vehicle and individual equipment configuration, so as to ensure that the technical equipment meets the requirements of real tasks. In addition to the full popularization of handheld mobile terminals, walkie-talkies and other communication equipment, the company has also introduced advanced technologies, such as AR glasses and digital individual system for the first time in power supply this year, which has comprehensively improved the efficiency of information and command interaction, using technologies to save manpower, and management to investment.
In terms of the business system, the inspection work during this year’s power supply will take a turn from last year’s “on-site duty, dynamic inspection” to “smart care, active intervention”. Through the implementation of the new power supply standards, this year’s CIIE is expected to add only 16% of on-site inspection personnel for a 40% increase of power supply work, and the main venues’ route inspection personnel will be reduced by half.
According to the new standards, the substations and transmission lines of 220 kV and above within Shanghai's main power grid have been put into full protection and full wiring. All repair bases, repair stations, repair personnel, and emergency repair vehicles distributed throughout the city are also ready to embrace the second CIIE in their best condition.
In terms of the user-side protection, Shanghai Electric Power Company has added ultra-quiet diesel generators to the core venues of the event, and connected to the distribution box that can be quickly switched in 0.5 seconds. At the same time, all loads in the core venues are connected to the UPS (uninterruptible power supply), which not only ensures zero flashing when the power is switched, but also can supply continuous power for 60 minutes, thus meeting the “N-3” standard of the venues’ power supply.
Sources: People.com.cn, and Shanghai Electric Power Company, State Grid