The Nineteenth National Congress of the Communist Party of China pointed out that it is necessary to strengthen the construCTion of infrastructure networks including the power grid and enhance China's economic construction advantages. In recent years, State Grid Corporation of China has continued to promote the construction of first-class urban power grids in 10 key cities, increased investment in power grid infrastructure, improved users' service experience and experience with the power grid, and served the needs of economic and social development and the people's beautiful life.

Establish a two-level operation and maintenance management and control system. State Grid Beijing Electric Power Construction City and District “1 + 16” two-level operation and maintenance management and control model, respectively exercising the roles of “supervision and control” and “command and dispatch”; establish a two-level center coordinated supervision and control mechanism, through “key node monitoring, to-do "Task push", which embeds operating standards and management requirements, effectively promotes the timely and standardized work of the two-level center and front-line teams; implements closed-loop management and control of the entire business process, develops an operation inspection app, and displays work order progress, personnel positions, and operations in real time Quality, etc., to achieve considerable online status, followable trajectory, and work quality can be checked.

Establish an "integrated emergency repair" management model. State Grid Tianjin Electric Power has established three emergency repair centers for urban power supply networks by region, under the unified command of the company's emergency leadership team, and centrally allocates emergency repair teams, equipment and other resources in case of emergencies; sorts out equipment accidents, important power protection, regional fire And meteorological, geological disasters and other emergency support needs, the three centers are equipped with 14 types of emergency repair equipment to improve power support and major disaster emergency support capabilities; establish emergency professional rotation training system, prepare annual emergency backbone training plan, The daily work such as uninterruPTed power operation is an important part of the training, and the professional quality of personnel is continuously improved.

Optimize the organization and business model of uninterrupted power operations. China Open Power Offshore Power Co., Ltd. builds an uninterrupted operation system, establishes a live operating room and an uninterrupted operation technology R & D operation center, formulates urban power grid uninterrupted operation repair service standards, establishes a monitoring and evaluation model of operator safety protection equipment, and improves the development and configuration of operating equipment Level; benchmark Tokyo Electric Power, pilot application of the third generation of live working robots, promote low-voltage uninterrupted operation and short insulated pole operations, covering all four major categories, 33 live operating projects, and improve the ability of uninterrupted operation; implement planned blackout voltage drop Take action to carry out weekly forecasts of households during power outages, optimize construction processes for industrial expansion and technological transformation, and achieve planned maintenance and zero power outages in the central city within three years.

Data drives the construction of urban power IoT stations. State Grid Qingdao Company strives to open up the data channels of smart transformer terminals and smart meters, to achieve consistent operation and distribution of data sources and minute-level monitoring and collection of customer-side power consumption data, automatically Lock out power outages, improve repair efficiency and accuracy; R & D equipment status detection Edge computing application, which collects switch status, current and voltage data every minute and analyzes abnormal data, automatically generates and dispatches work orders for hidden defects, and realizes active lean operation and maintenance; develops an integrated data management platform, unifies data models, and calls interfaces , The application of mobile terminals, electronic tags and plug-and-play technology to automatically update data, to achieve the basic information of the device "once entry, sharing and sharing", effectively reducing the problem of repeated entry.

Promote automatic second-level distribution of work orders. State Grid Nanjing Company has established a working mechanism, directly issuing active repair work orders, quickly analyzing and judging incidents such as power outages and abnormal equipment operation indicators, and implementing active repair and active operation and maintenance prior to customer repairs, reducing customer repairs and repairs from the source. Complaint; Establish work order data pool, comprehensively use historical dispatch matching, repair grid positioning and other technologies to automatically carry out work order dispatch. The average work order dispatch time is 2.7 seconds, and the dispatch accuracy rate is 99.86%; strengthen performance management and set up professional indicators , Set a minimum threshold, link distribution time and accuracy with personal performance, and promote continuous improvement in the efficiency and accuracy of automatic distribution.

Build a low-voltage cable and channel sensing system. State Grid Suzhou established a low-voltage cable and channel identification system. Based on the "State Grid Core" RFID, it interconnected the various elements of equipment information management, inspection management, and project management to build a comprehensive and accurate IoT network. On-site state awareness system, applying low-power sensing wireless transmission technology, developing intelligent live detection equipment, establishing a mapping connection between RFID and sensing terminals, obtaining underground traffic data, and powerfully supporting comprehensive equipment state management and real-time resource allocation; establishment A cloud-based intelligent platform that develops modules such as artificial intelligence diagnosis and remote expert diagnosis, realizes real-time processing and intelligent diagnosis of inspection data, sensor collected data, and comprehensively improves the lean management level of low-voltage cables.

Deepen the 10kV line loss management. State Grid Hangzhou Company strengthened the power collection operation and maintenance of substation 10 kV lines, special transformers and public transformers. It monitors daily collection of failed data and continuously regulates meter rotation management to improve the quality of power data collection. Equipped with a coordination mechanism to achieve front-line business connectivity and information sharing; daily tracking and monitoring of key information such as maintenance plans, fault handling, and marketing expansion, dynamically matching line loss models with field equipment operating methods, and improving line model maintenance quality.

Carry out demand management of urban power grid construction. State Grid Ningbo Company constructed a grid planning system, divided into five levels of grids: “city, county, district, power grid, and power supply unit” to optimize and perfect the grid grid at all levels; sort out the construction needs and develop according to load hotspots Direction, coordinating the requirements of urban power grid construction, municipal relocation, and industrial expansion, and compiling annual key construction plans; jointly with the government to release the planning results of facilities such as switch stations, cable ducts, etc., and incorporating them into the government's planning detailed regulations, forming legally effective Documents; solidify typical power supply modes, study multiple modes such as world-class standard city power grids, new urbanization characteristic power grids, and beautiful rural typical power grids, and differentiate design standards and optimal wiring methods.

Promote smart regulation of urban power grid protection. State Grid Fuzhou Company formulated a unified set list template for existing urban power grid protection equipment, streamlined set items, and standardized the use of protection functions; developed a set setting system, penetrated the operation inspection and control system data, and realized the online setting and release of protection settings; integration Protect data, user data, and grid data, implement intelligent analysis and auxiliary decision-making of fixed values, conduct full-process auxiliary research and judgment on protection anomalies, automatically generate fault location analysis and fault handling suggestions, reduce the workload of control personnel, improve the efficiency of fault handling, and promote protection Upgrade to intelligent decision-making.

Establish a full-chain power supply reliability management system. State Grid Xiamen Company strengthened budget-type accurate management and control of households during power outages, compiled an annual power outage pre-control table, implemented quarterly and monthly decomposed management and control, and fulfilled rewards and punishments in accordance with the method of "total control and monthly settlement"; Embedding the control of the number of households at the time of a power outage into the full business process of feasibility study establishment, construction and construction, implementing a project blackout plan upgrade approval system, and strengthening the entire process of management and control; focusing on reducing the frequency of failures, limiting the scope of failures, and increasing the speed of power restoration, Centralized development of line lightning protection and anti-breakage management, promotion and application of emergency power supply measures in 17 types of typical scenarios, comprehensive implementation of the "return to power, repair after" mode, comprehensive measures to reduce the number of households in the event of a power failure.

By: JUCRO Electric (Focus on Vacuum Interrupter, Vacuum circuit breaker, Vacuum contactor , Current/Voltage transformer, SF6 Circuit Breaker, Isolation Switch and Switchgear)

2019.12.21