Recently, the State Grid Mengxi - Tianjin south, Yu Wang - Weifang UHV project (hereinafter referred to as the "two horizontal" project construction preparation) will coordinate the Ping Wei and Huainan - Nanjing - Shanghai 1 million volts high voltage AC three phase expansion project site construction project coordination meeting held in Beijing and Jiangsu, the national grid has begun to attack planning, a number of UHV lines landing work.
The state environmental protection department in October 20th to be approved Mengxi - Tianjin South exchange, Jiuquan - Hunan UHV DC transmission engineering construction project environmental impact assessment and publicity, means that the two UHV transmission project EIA will be passed; then, in accordance with the procedures for formal approval stage, will enter the national development and Reform Commission, based on projections, the two AC lines is expected to be approved early next year.
The "two horizontal" project for approval
The "two horizontal project" is expected to be approved, and the national grid is deployed ahead of time. Once the project is approved, it can start construction quickly.
Recently, the national grid "two horizontal project" construction preparation coordination meeting is held in Beijing. In order to achieve the "two horizontal" project approval fast start, after the start in order to promote the goal of the meeting summed up the construction characteristics and two horizontal "Engineering", the reasonable arrangement of construction management and division of labor, especially for substation land clearance in advance time and work requirements. The requirements of the company, the construction units according to the "two cross project the actual situation, the implementation of the new requirements of the construction management, and ready to work from the organization and personnel, establish a new system for land clearance, engineering design and construction plans, construction engineering etc..
According to the introduction, the total length of the "two horizontal project" line is 2 x 1664.5 kilometers, through the economic developed zone around Bohai and Shanxi, Shaanxi, Hebei and other provinces. At present, Tianjin Mengxi Nantes high voltage engineering construction management program has completed the first draft and to solicit the opinions of the relevant units, the project is being carried out pre preliminary design review; Yulin Hengshan Weifang UHV project is the preliminary design of pre propulsion.
"The two project" by the national grid is called the key transmission channel to implement the national action plan for the prevention of air pollution, including Zhungeer, Northern Shaanxi, Shanxi and Jinzhong planning and construction of the power supply, power transmission to the eastern region of North China, in line with China's overall energy flow and strategic deployment.
In fact, in October 20th, the state environmental protection department intends to approve the Mengxi - Tianjin South exchange, Jiuquan - Hunan UHV DC transmission engineering construction project environmental impact assessment and publicity. Among them, Mengxi - Tianjin South 1 million volt AC power transmission project, will build Mengxi 1 million volt substation, the need to build 3000 MVA main transformer 2 group, 1 group, low voltage high voltage reactor 4 reactor group, low voltage capacitor group 3, 1 million volt and 500 thousand volt outlet 2 back outlet 4 back; the new North Shanxi 1 million volt substation. The need to build 3000 MVA main transformer 2 group, 3 group, low voltage high voltage reactor 3 reactor group, low voltage capacitor group 5, 1 million volt and 500 thousand volt outlet outlet 4 back to 4.
At the same time, the new Beijing West 1 million volt substation, the need to build 3000 MVA main transformer 2 group, 3 group, low voltage high voltage reactor 4 reactor group, low voltage capacitor group 8, 1 million volt and 500 thousand volt outlet 4 back outlet 4 back; the new Tianjin South 1 million volt substation, need to build 3000 MVA main transformer group, 2 high pressure reactor group 1, group 8, low voltage reactor and low voltage capacitor group 4, 1 million volt and 500 thousand volt outlet outlet 6 back to 6.
At the same time, the new AC line Mengxi - Shanxi Province - Beijing West - Tianjin South 1 million volt transmission line length
608 km; construction of the 1 million volt Beijing East Ji'nan line PI into the Tianjin South substation 1 million volt transmission line, the line length of about 8 kilometers.
At the same time, the State Environmental Protection Department of Jiuquan publicity to Hunan 800 thousand volts high voltage DC transmission project will be built, sending 800 thousand V Jiuquan converter station, require the construction of converter transformer 24, build another 4 standby, 800 thousand volt DC grounding wire outlet 1 back, 1 back, 750 thousand volt AC outlet 9 back.
At the same time, the newly built 800 thousand terminal Hunan converter station will need to build 24 converter transformers, another 4 spare parts, 800 thousand volts DC outlet 1 times, the grounding pole outlet 1 turns, 500 thousand volts AC outlet 7 return. At the same time, the DC line has a new 800 thousand volt DC transmission line, with a total length of 2413 kilometers.
Industry analysts said the two UHV projects have won the National Energy Bureau to carry out preparatory work for the "path", without objection and in the approval process basically, reporting in accordance with normal procedures, is expected to be approved by the state, and in accordance with the National Energy Administration approval process of accounting, the two AC lines is expected in the next year at the beginning of the year approved.
Coming to the peak of construction
In fact, in the near future, the national grid is carrying out several preparatory work for the construction of UHV, and 2015-2016 years will be the peak of the UHV line construction.
The national Power Grid Corp annual work conference has made clear, will have to start the construction of the "three cross" Huainan - Nanjing - Shanghai, Ximeng - Shandong, West Inner Mongolia - Tianjin exchange and Ningdong - Zhejiang UHV DC projects before the end of this year, is currently the only Mengxi - Tianjin UHV AC without approval; at the same time, before the end of fighting approved by the Jiuquan - Hunan UHV DC transmission project.
After the first half of the Huainan - Shanghai UHV AC line is approved, the three quarter Ximeng - Shandong UHV project has been approved by the ndrc. Plus Mengxi - Tianjin, Yu Wang - Weifang two AC lines approved soon, the State Grid is for UHV lines landing busy like a raging fire.
In October 16th, the first bid section of the Ningdong - Zhejiang + 800 thousand volt HVDC project was started, and the base first base casting began in No. 232 tower.
Shaanxi electric transmission line project first tenders in Ningxia and Shaanxi company at the junction of the hohgjingzi Township No. 201 tower, stop in Wuqi County of Xiaowan Xinai tower No. 401 Zhang Qu, line length of 87.955 km, a total of 160 base tower. The basis for artificial hole digging, the tower as a free-standing tower conductor with the first cross section of the steel core aluminum line biggest.
In October 21st, the first meeting of the coordinated leading group of the national Power Grid Corp Huainan Nanjing Shanghai 1 million volt high voltage exchange project and the three phase extension of the peace market was held in Jiangsu. The national grid requires all units to form the Taizhou Railway Station and the Yangtze River crossing scheme as soon as possible, to ensure that the three phase project of the first quarter of next year and put into operation Pingyu overall project safety and quality stability; consider the project related work station, staging operation in advance, advance planning arrangements for large transport, handover test, supporting the construction of debugging and other related work.
Huainan - Nanjing - Shanghai UHV project is by far the largest, the largest investment, the biggest difficulty of UHV AC power transmission project, with a technical difficulty, challenge and difficult construction equipment three characteristics.
It is reported that the Huainan - Nanjing - Shanghai UHV AC project of new Nanjing, Taizhou, Suzhou 3 substations, the expansion of Huainan, Shanghai West substation, the new substation capacity of 1200 KVA, the new transmission line 2 x 779.5 km, the erection of double circuit on same tower (local four circuits on the same tower erection), via Anhui, Jiangsu and Shanghai. Three phase transmission project including HuaiNan Railway Station 1 1 million volt Pingyu qualifying interval, a new double circuit on the same tower (the unilateral line) line of about 5 km. At present, the work of land expropriation, design, procurement, construction and so on is carried out smoothly according to the milestone plan, and the overall safety and quality situation is stable.
In October 23rd, Hunan electric power maintenance company broke the news, the national network of Hunan electric power plans through the expansion of Zhuzhou Yuntian 500 thousand volt substation, make the substation to the largest in Hunan, with UHV docking landing, to meet the needs of economic development and resource utilization.
Hongyuan securities analysts pointed out that the approval of UHV transmission line has been a major breakthrough, the 33 lines to be built. This year is one of the major breakthroughs in line approval, and the rate will be approved by the "Three - two - straight" UHV line. In order to meet the demand of large energy bases in China, it is estimated that there will be about 24 UHVDC transmission lines and 9 UHV AC lines before and after 2020. In addition to the Energy Bureau's 12 transmission line, the current national network is planning a new "five hand five straight" scheme, which will ensure the sustainability of the UHV construction.
Good equipment dealer
With the intensive construction of the domestic UHV project, the national grid has released the second UHV AC engineering equipment bidding plan of the State Grid in October 15th.
The analysis of the industry said that the landing of UHV will bring benefits to UHV equipment suppliers.
In October 15th, the second UHV AC project tendering plan for the state grid was released this year, including UHV combined appliances, main transformers, reactors and other major equipment. Ximeng to Shandong UHV AC transmission project for the year second approved the construction of UHV AC transmission line, for the year third UHV lines; according to the bidding plan, the supply of equipment is to be completed by the end of next year before delivery.
According to the national grid Ximeng - Shandong UHV substation project bidding plan a total of 1000kV combined electrical equipment, GIS tender 30 intervals, 20 1000kV transformers, 1000kV shunt reactor 28 Taiwan, 132 Taiwan, lightning arrester transformer 128.
At the same time, the national grid also plans for UHV capacitor group 9, 39 groups of circuit breaker and isolating switch, series compensation device 2 sets, 18 sets of switch cabinet, pillar insulator porcelain insulation 695; station transformer 18 units, 60 units of 110KV reactor, 550kV combination electric appliance and 110kV special switch 40 sets in total. In accordance with the single main transformer 40 million yuan, 21 million yuan a single reactor, a single GIS interval of about 100 million yuan calculation, Ximeng to Shandong UHV project three equipment size of approximately 800 million yuan, 588 million yuan and 3 billion yuan.
Hong Yuan Securities analysts point out that UHV is an important part of China's implementation of the energy structure adjustment. The adjustment of energy structure in China is mainly reflected in the improvement of energy consumption at the consumer side and the increase of the proportion of clean energy at the supply side. The change of supply and demand has increased the imbalance between resources and load centers, and the demand for large capacity long-distance transmission is more intense. It is estimated that by 2030, the scale of the transmission of electricity from the west to the East and the south to the north will be increased to around 450 million kilowatts.
"The UHV investment of about 360 billion yuan in the next 4 years will bring new business increments to power equipment manufacturers and provide great profit flexibility for them. We judge the peak of the line examination and approval in 2015, and the peak for the performance of the equipment manufacturers will be in 2016. Hong Yuan Securities analyst believes that the expected high level of electrical equipment manufacturers, the main China XD, TBEA, XJ Electric will fully benefit.
(Huaxia times)
