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Polaris Transmission and Distribution Network News: Since the beginning of this year, all units of the company have conscientiously implemented the strategic deployment of "three types and two networks, world-class", actively promoted the construction of ubiquitous power Internet of Things, and continuously innovated practices in big data applications, smart energy services, and achieved positive results.
cloud main site makes the power grid more efficient and smarter
Big data is changing the ecology of the traditional industry, and the power industry is no exception. Large-scale collection and systematic analysis of power data can optimize various links such as power production, transmission, and consumption, monitor grid operation in real time, predict failure risks, and optimize the operation and maintenance emergency repair process.
However, the smart grid distribution automation main station under the traditional operation and maintenance mode can only realize the operation and maintenance management of the power transmission and transformation equipment itself. With the access to massive data, the traditional main site architecture can no longer meet the higher requirements of safety, reliability, flexibility and efficiency of the power grid.
In a sense, mobile Internet has accelerated the big data process, and big data has promoted the development of cloud computing. When the distribution network that is closely related to people's lives encounters the "cloud", what changes will it bring?
On May 28, State Grid Shanghai Power Company built the first distribution IoT cloud main site in China. This is an upgrade to the main station of smart grid distribution automation by applying Internet of Things technology.
"If the distribution IoT is compared to the central nervous system of the human body, then the distribution IoT cloud main site is our brain." said Dr. Ran, head of the research and development of the distribution IoT cloud main site. The main power distribution Internet of Things website after
cloudization is connected to 17,858 medium and low voltage distribution stations, 123,989 public transformer stations, 10.653 million low-voltage customers that provide electricity supply guarantees for Shanghai residents and enterprises, as well as various distributed power supplies, charging piles, etc. The data it generates is no longer limited to power grid equipment such as transmission lines and substations, but includes IoT-sensing data from various smart terminals. These perceptual data updated in units of billions per second interact with information related to maintenance, marketing and regulation professionals, so as to achieve comprehensive collection and layered processing.
At 10:00 on June 27, Gong Dai, an employee of Shanghai Pudong Power Supply Company, opened the cloud main station on the computer in the office. At the same time, colleague Tang Li used a handheld terminal to scan the equipment labels of distribution transformers and intelligent distribution terminals at the Zhangjiang distribution station in Haoyuan. Five seconds later, Gong Dai saw the terminal scanned by Tang Li completed registration and configuration on the cloud main site, and the corresponding information of the associated device also appeared. After
data collection, the most important thing is analysis. In-depth analysis and application of power data can not only improve the operational efficiency and level of the power grid, but also integrate it with macroeconomics, people's lives, social security, road traffic and other information to promote economic and social development. At present, the cloud main station has the ability to analyze the Internet of Things data, which can provide practical solutions for the entire process management of distribution network operation and inspection information.
At present, the cloud main station has functions such as basic electrical data collection, environmental status collection, dynamic topology identification, low-voltage fault analysis, power quality monitoring, automatic reactive power compensation, and reporting of power outage information.
It is worth mentioning that the plug-and-play function of the intelligent matching terminal is the plug-and-play function. Taking medium-sized table areas as an example, each table area has more than 1,000 variables. The previous automation control system needed to configure point tables for each device in advance to record the usage of each variable. One employee completed the point table configuration of up to one or two table areas every day. The order and content of intelligent configuration terminals in different station areas are different. Each station area must be configured separately and debugged and checked one by one during on-site access. The intelligent configuration terminal plug-and-play allows the main station to no longer configure the point table, shortening the device access time from 4 hours to 5 minutes.
applies edge computing to actively perceive information. At 18:00 on May 30, the switch of an outdoor 10 kV box low-voltage outlet line in Gutongliu Village, Pudong, Shanghai tripped. At 18:01, the emergency repairman He Yongming's mobile phone received a notice, and at 18:27, the fault was eliminated. When a
failure occurs, the intelligent distribution terminal installed on the box transformer station side records this trip event and reports it to the cloud main station system in real time.The cloud main station system immediately sent the emergency repair ticket generated by the fault to the handheld terminal of the emergency repair personnel online. After receiving the work order, the emergency repair personnel find the fault point according to the fault zone name and line name and deal with it. It took less than 30 minutes from tripping to solving the problem, greatly reducing the troubleshooting time. This mainly comes from the rapid grasp of fault information, relying on edge computing. Because it is close to the data source, has good real-time performance, fast response and high security, edge computing has become the core technology of the ubiquitous power Internet of Things perception layer.
In the ubiquitous power Internet of Things scenario, relying on the large number of intelligent distribution terminals in the power grid, through the combination of cloud main station computing analysis + local edge computing, the detection data of "distribution and transformation station area-cable box-electric meter box-low voltage customer" can be combined to realize automatic analysis and rapid positioning of fault segments and power outage customers. It can even combine and analyze various equipment status data, environmental monitoring data and customer power consumption data to achieve early warning of distribution network faults. On the day the main cloud site was built, the ubiquitous power Internet of Things intelligent sensing device performance detection system in the same room entered the trial operation mode. The integrated development of the perception device performance detection system and the cloud-based main station of the distribution Internet of Things will further promote the extensive connection and interaction of distribution equipment, in-depth information collection and data fusion analysis.
The construction of the main network of distribution IoT cloud site has just begun. With the commercial use of 5G, State Grid Shanghai Power will rely on the 5G application platform to actively promote research and demonstration of innovative 5G applications such as intelligent distributed distribution automation, precise load control, distribution network synchronous phasor measurement unit, distributed energy control, power consumption information collection, mobile operations, etc.
Electric Internet of Things helps Tianjin turn around
htmlOn August 14, the Tianjin Municipal Government and State Grid Co., Ltd. signed the "Framework Agreement on Accelerating the Implementation of "Three Types and Two Networks" and Building "Five Modern Tianjin" and Promoting the Strategic Cooperation of Coordinated Development of Beijing-Tianjin-Hebei" signed by the company and local governments on the construction of "Three Types and Two Networks".Building a smart city and building a pioneer city in the energy revolution is the goal of Tianjin and a complex system project. Guided by the company's strategic goal of "three types and two networks, world-class", State Grid Tianjin Power Company takes this as an opportunity to fully serve the construction of "five modern Tianjins", promote the construction of ubiquitous power Internet of Things, strengthen the nervous system of urban operation, and strive to be the gorgeous transformation of the city.
At night, the colorful lights on both sides of the Haihe River decorate the city with a particularly beautiful look, and rows of street lights silently protect the city's night.
A street lamp pole located at the intersection of Wangchuanchang No. 1 Road and Huachang Street seems ordinary, but it has the "eye" to see it, and you can speak with it when you open your mouth.
"Hello! You are already in a deep water-stabilized area, with a water depth of 25 cm in front of you. Please pay attention to your travel safety." After a heavy rain, when passers-by walk to a low-lying water-stabilized area, you will hear such a reminder sound from the street lights above your head.
It turns out that this base street lamp pole is equipped with a smart lamp pole, which integrates a surveillance camera and voice broadcast function. It is combined with the water level monitoring device installed in the middle of the pole body. Once the water accumulation depth exceeds the set value, the surveillance camera detects that someone enters a low-lying area, it will send an alarm to the backend, and staff can remotely remind pedestrians through broadcast.
surveillance camera, water level sensing, voice broadcast and other devices intelligently linkage, making street lights the "eye" and "mouth" of smart cities, providing more services to the people.
Ubiquitous power Internet of Things provides unlimited possibilities for the construction of smart cities. Liu Haoyu, a technician at the Metrology Center of Tianjin Academy of Electrical Sciences, is applying the new smart meter in the laboratory to simulate and detect the sub-item power consumption of household appliances. Relying on the advanced quantity test units in Tianjin Key Laboratory, State Grid Tianjin Power has developed the first new generation of smart meter with intelligent load recognition function around the ubiquitous power Internet of Things.
"This new smart meter is no different from a conventional meter in appearance. The three major functions of load identification, status monitoring, and power outage reporting are modularly designed and embedded in the base meter, which can be quickly and conveniently replaced, bringing customers a safe and efficient smart electricity experience."Tianjin Electric Power staff introduced that by adopting the "cloud + edge computing" technology, this meter can not only accurately "identify" household appliances, but also collect real-time household electricity load types and various electrical appliances consumption and distribution information. Through refined power consumption data monitoring and energy consumption early warning analysis, customers can find high-energy-consuming appliances in homes and provide energy-saving guidance.
At present, the first batch of new smart meters have been piloted in the Talent Apartment of China-Singapore Tianjin Eco-City, and the new meter meter function runs stably. State Grid Tianjin Electric Power plans to select 700 residential customers to install and apply on-site in the China-Singapore Tianjin Eco-City, and at the same time accelerate the development of system application functions, and finally Build a comprehensive energy service solution on the residential side to realize the accurate collection and monitoring of household loads, and provide customers with smart interactive value-added services such as energy conservation diagnosis, identification of power safety hazards, and electrical appliance evaluation.
is not only for residents' customers, but also has successfully applied the new smart meter at the commercial customer level. "Recently, we have used intelligent perception technology for electricity consumption, successfully carried out comprehensive energy consumption measurement and evaluation services for a restaurant of a multinational catering group, and issued energy consumption analysis reports such as electricity consumption monitoring and analysis, energy consumption benchmarking, etc., to realize the classification and itemized measurement of energy on the commercial customer side, and provide assistance to enterprises to further save energy and reduce consumption. "Dong Delong, a technician at the Metrology Center of Tianjin Academy of Electrical Sciences, said.
Network Tianjin Power will promote new smart meters to more large chain catering, commercial activity centers and other commercial customers, carry out energy consumption monitoring, behavioral analysis, energy conservation guidance and other electricity consumption services, intuitively display energy measurement data on the client, realize data monetization, and provide data analysis support for more companies to carry out energy conservation work.
makes everything interconnected, feel smart energy new experience
"The success rate of electricity consumption information collection is 99.3%, and the line loss in Wangfan Village No. 1 station area line loss has abnormal fluctuations..." On August 20, Mao Yong, director of Lei Gong Power Supply Station of Anlu Power Supply Company in Xiaogan, Hubei Province, logged in to the "Team Perspective Windows" pipe In just 10 minutes, a detailed analysis report was obtained. The platform automatically queryed and intelligently analyzed more than 30 business systems and more than 140 assessment indicators, and monitored a total of 11 abnormal problems. According to this analysis report, Cheng Zhibing, director of Leigong Power Supply Station, quickly drafted the work order for the key work tasks of the day and carried out special inspections.
This year, State Grid Hubei Power Co., Ltd. integrated various professional information systems, opened up the information barriers between more than 30 key business systems, realized the integration of cross-professional data such as operation, maintenance, and marketing, and formed a unified data asset. On this basis, the company provided the power supply station with an efficient and fast digital management platform - "team perspective window".
"team perspective window" Reduced the pressure of power supply services for grassroots teams and improved the response speed of power supply services. At present, staff from 1,049 grassroots power supply stations in Hubei can collect real-time data on the station area concentrator disconnection, current and voltage through the "team perspective window" to actively monitor and discover power consumption abnormalities and equipment failures on the customer side.
distribution automation makes the power grid smarter. The distribution network is a key link connecting the main network, customers and various distributed interactive terminals, and is also the main battlefield for the construction of ubiquitous power Internet of Things. At present, State Grid Hubei Power has built distribution automation main stations in 13 cities and cities, and has begun practical applications in Wuhan, Ezhou , Yichang , Xianning , Xiaogan, Huangshi and other places. In the first half of this year, the company A total of 627 remote control operations were carried out, with a success rate of 99.75%.
In April, in order to deepen the construction of ubiquitous power Internet of Things, State Grid Hubei Power set up a distribution Internet of Things demonstration zone in Ezhou, and carried out pilot projects in terms of full coverage of power distribution automation, intelligent distribution transformer terminal applications, intelligent management of distribution cables and deepening application of power supply service command systems.
At present, Ezhou Power Supply Company has achieved full coverage of power distribution automation in the main urban area. The company's distribution network fault search and processing time has dropped significantly, the turn-over operation time has been shortened from 33 minutes to 1.5 minutes, and the fault isolation time has been shortened from 57 minutes to within 3 minutes, and a record of automatic fault analysis, isolation and load transfer process within 13 seconds.The company's operation and maintenance complaint work orders fell by 40% year-on-year, and the reliability of distribution network power supply increased to 99.96%.
According to the three-year goal of the State Grid Hubei Power Distribution Automation Construction and Application, by 2020, the province's urban agricultural grid medium voltage distribution line distribution automation coverage will reach 95%, achieving considerable, measurable, fault positioning and isolation of distribution network main lines, and achieving self-healing in some areas. By 2025, State Grid Hubei Power will build a distribution network with certain self-healing capabilities, realizing automatic isolation of overhead and underground cable network failures and automatically restore power supply.
10, the 7th World Military Games will be held in Wuhan. State Grid Hubei Electric will take advantage of this power guarantee opportunity to integrate PMS2.0 system, power grid geographic information system platform, power supply service command and other business systems, integrate various online monitoring systems, and build an intelligent power guarantee command platform with collaborative command, comprehensive display, early warning and early control, intelligent interaction, task control and other functions as the core.
In addition, State Grid Hubei Electric Power is focusing on creating an smart energy service demonstration project to provide replicable and popularizable experience for the promotion of power banks of the Yangtze River and comprehensive energy services.
"Scan the code with your mobile phone and you can use the shore power, which can save about 100,000 yuan in the whole year." On June 25, when the cruise ship "Yangtze River Gold 3" used shore power at Zigui Port, Yichang, motorist Chen Li said. Shore power is being recognized and welcomed by more and more ship owners. In the green shore power pilot zone of the Three Gorges Dam District of the Yangtze River, State Grid Hubei Power vigorously promotes and applies the shore power cloud network platform, expands value-added businesses such as power trading and big data analysis, and creates a three-dimensional service ecosystem based on shore power and the entire industrial chain.
State Grid Hubei Electric Power provides a "Internet +" smart energy consumption solution for the under-construction Ezhou Airport aviation metropolitan area, and builds a clean and low-carbon energy consumption system with electricity as the priority. The project will become the first airport in the country to use river water source heat pumps; create an "Internet +" big data platform to realize the intelligent operation and management of the entire airport energy system, and complement each other in multiple energy sources and efficient utilization. By then, the airport's renewable energy utilization rate will reach 16%, saving about 33.66 million kilowatt-hours of electricity per year, which is equivalent to reducing fossil energy consumption by 10,000 tons.
Disclaimer: The above content is reprinted from Polaris Electric Power News Network, and the content posted does not represent the position of this platform.
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