How to Select Medium Voltage Distribution Equipment in State Grid
Release time:
2022/08/29 20:58
In order to improve the healthy operation level of the equipment, compact the responsibility system of the equipment owner, strengthen the patrol inspection, defect elimination, channel protection, line protection and electricity protection of the transmission and distribution lines in the power supply area, and carry out the "pull-net type" hidden danger investigation and defect elimination work of "horizontal to edge, vertical to bottom and full coverage" in the jurisdiction area; complete distribution automation coverage of 114 lines, comprehensive maintenance of 8 lines, cumulative installation of 67 line branch section switches, and elimination of 36 line equipment defects; Timely optimize the power supply structure of the grid, increase capacity and rotate 40 distribution transformers; Strengthen the voltage quality control of substation busbars to provide high-quality voltage guarantee for the power supply side of the distribution area. Through the implementation of the above measures, the reliability of power supply of distribution network in Huaibin County has been effectively improved, and the local residents have been ensured to have a bright and warm festival.
Medium voltage distribution cabinet is an important part of the distribution system, according to the need to achieve the medium voltage distribution line open, close, section and other functions, widely used. The company's medium voltage distribution cabinet mainly includes SF6 indoor and outdoor ring network switchgear, solid insulation switchgear, environmental protection gas switchgear, armored removable metal enclosed switchgear and other products, the product voltage covers 12-40.5kV voltage level.
In order to ensure that the power supply is foolproof during the college entrance examination, prepare in advance, and deploy in an all-round way, starting from the aspects of responsibility implementation, power dispatching, emergency repair, power supply service and power protection measures, etc., formulate power protection plans, carry out specific division of work for various departments, and actively implement various power protection measures. The company's substation maintenance center organizes staff to inspect 110 kV substations within its jurisdiction and conduct infrared temperature measurement to understand the operation of power grid equipment in real-time. The power transmission and distribution operation inspection center and the urban power supply center patrol the power protection personnel to strengthen the patrol of 110 kV power transmission and distribution lines and 10 kV power distribution stations involved in the power supply of the test site, so as to eliminate hidden dangers in the bud in time and ensure the healthy operation of the lines.
The monitor of the secondary operation and inspection class of power distribution in the cable operation and inspection center of Xining power supply company said that the successful test of the new mode indicates that the switching stations that could not add fiber channels can use medium voltage carrier technology to connect to the main station of power distribution automation, realize three remote coverage of equipment that does not have light conditions at the end, and promote the automation and practical level of power distribution to be further improved.
Distributed photovoltaic access brings randomness, volatility and other characteristics, while making the distribution network an active network. The access of electric vehicle charging piles will also improve the unpredictability of the side load of the distribution network. All these promote the upgrading of distribution automation. During the planning and 14.5 period, 100 of the municipal companies in the main distribution stations in Area I will be fully covered. The proportion of "three remote" medium voltage distribution switches reached 50%, and all the new equipment was integrated with standardized distribution equipment once or twice, effectively stimulating investment in the field of distribution automation.
The intelligent distribution box with ultra-high demand for equipment in the far-away area of Hubei 618 Line can meet the demand of increasing power supply in the local residential market, and realize that the distribution station in the early stage of the distribution box can pull the network transformer according to the working space spacing of 1kv to meet the daily inspection management requirements. The surrounding environment is good, and the secondary application can be fully utilized to realize the automation of the distribution network. The distribution box is equipped with short-distance inspection equipment and the company's long-distance power supply solution. First according.
During the snowfall, closely follow the weather changes and implement various power supply guarantee measures in accordance with the principles. In the cold wind, the security personnel will step up their inspection and care of power facilities such as substations, power distribution rooms, transmission lines, etc., timely investigate and control all kinds of environmental hidden dangers, and continue to do a good job in differentiated operation and maintenance such as heating equipment operation monitoring and infrared temperature measurement. In addition, in areas prone to icing, deicing personnel and ice melting vehicles are on standby at any time. The personnel on duty at 19 ice observation points and 24 ice observation posts carry out real-time icing observation, test important meteorological parameters such as wind speed, temperature and humidity, and timely grasp the operation status of the line.
On the morning of the 30th, at the examination center for the college entrance examination, Xiang Bao's power personnel came to the school power distribution room. according to this, together with the electrician on duty, they sorted out and investigated the operation of the school power distribution room's equipment, the distribution of internal important loads and the configuration of self-provided emergency power supply. they also carried out infrared temperature measurement and detection on the power distribution equipment to comprehensively investigate the hidden dangers of safe power supply during the college entrance examination.
The main function of the power distribution equipment in the data center is the on-off, control and protection of electric energy. The most important power distribution equipment is the power distribution cabinet. The data center power distribution cabinet is divided into medium voltage power distribution cabinet and low voltage power distribution cabinet. Medium voltage distribution cabinet is mainly 10kV voltage level, connected to the mains upward, and connected to the low voltage distribution cabinet downward. The low-voltage distribution cabinet is mainly 400V voltage level, which further converts, distributes, controls, protects and monitors the electric energy.
Jining Power Supply Company visited key customers of power protection in advance, grasped the electricity demand of customers in time, carried out comprehensive and detailed inspection on the switching of customers' backup power supply and self-provided generators, and arranged special personnel to supervise and assist customers in rectification of problems found. Organize rainbow communist party member service team to stick to the equipment site involved in power protection, carry out dynamic inspection and marking of first-class power distribution equipment such as power distribution room, ring network cabinet, line, etc., supervise and guide the power management units in important places to inspect the electrical equipment inside the activity venues, ensure the safe and stable operation of the equipment, and ensure the power supply during the activity.
Jining Power Supply Company visited key customers of power protection in advance, grasped the electricity demand of customers in time, carried out comprehensive and detailed inspection on the switching of customers' backup power supply and self-provided generators, and arranged special personnel to supervise and assist customers in rectification of problems found. Organize rainbow communist party member service team to stick to the equipment site involved in power protection, carry out dynamic inspection and marking of first-class power distribution equipment such as power distribution room, ring network cabinet, line, etc., supervise and guide the power management units in important places to inspect the electrical equipment inside the activity venues, ensure the safe and stable operation of the equipment, and ensure the power supply during the activity.
On the 22nd, Linxi County Power Supply Company relied on the system to comprehensively carry out the management of heavy overload and light no-load equipment for substations, main transformers, transmission and distribution lines and distribution transformers, so as to comprehensively improve the operation quality of equipment and optimize the power supply structure.
According to the experience of previous years, the electricity load of residents rose sharply during the May Day holiday, and the operating pressure of distribution network in urban areas increased. In order to do a good job in ensuring electricity during the May Day period, preparations and careful arrangements were made in advance. A week in advance to hold the May Day Power Protection Special Meeting, and formulate. According to the analysis of weak lines according to the operation of the power grid in previous years, the potential safety hazards of high and low voltage power distribution lines and power distribution facilities shall be investigated in advance, and rectification plans shall be formulated in time for all kinds of potential safety hazards found and eliminated before the festival.
At 11 o'clock on the 12th, at Shenjiang Road, Pudong, Shanghai, the deputy director of the marketing department, wearing a helmet and white protective clothing, was in the power distribution room to help customers eliminate potential safety hazards. Less than 300 meters away from the power distribution room, a number of production lines are ready to resume production.
Electromechanical power distribution: high and low voltage power distribution engineering, transformer installation, power distribution cabinet installation, power distribution transformation, power distribution capacity increase and reduction, power maintenance, power distribution room maintenance, high and low voltage power engineering, electromechanical installation, power and electrical engineering, etc. Installation and commissioning of substation engineering, industrial and civil high and low voltage complete sets of equipment, power equipment maintenance engineering, power scheme, drawing design, power supply planning, power supply process.
It also carried out one-on-one energy sorting and guarantee work for enterprise customers, implemented grid control for 76 substations, 63 switching stations, 45 distribution stations and 519 cables involved in enterprise power supply, and arranged corresponding emergency repair teams to ensure that once a fault occurs, it can be disposed of in the first place to ensure reliable electricity consumption for customers.
Recently, the Communist Party member service team of jia county Power Supply Company came to the workshop of the factory to visit and check the operation of high and low voltage power distribution cabinets and other production electrical equipment, and went deep into the power distribution room to carefully investigate whether there were any potential safety hazards.
Advanced communication technologies such as Beidou, 5G and quantum encryption assist in achieving full coverage of switch island lines; advanced applications such as switch-on quick-break feeder automation and centralized feeder automation comprehensively enhance the self-healing capability of medium-voltage power grid faults ...... The new demonstration distribution network built by Zhoushan Power Supply Company has become a necessary option for improving the power supply capacity and quality of remote island distribution networks.
Once the senior high school and senior high school entrance examination is imminent, the examination and power protection work has also entered a critical moment. In order to effectively do a good job in the safe and reliable power supply during the 2022 high school and high school entrance examination in Tai'an City, it has been deployed in advance in recent days to actively investigate and eliminate the shortage of urban power supply lines and power distribution equipment, strengthen inspection and monitoring of substations, and deal with problems in a timely manner. Ensure the operation of equipment and ensure that the power supply during the examination is foolproof.
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