Excellent performance continues

The prosperity of the power industry and the support of industrial policies, especially the launch of batches of "national brand" key projects in the field of power transmission and transformation, are like wisps of spring breeze, adding momentum to the development of China's electrical industry. The high-voltage switch industry is unprecedented in this rapid development of market opportunities.

Li Zhaolin, secretary general of the high-voltage switch branch of China Electrical Equipment Industry Association, said in an interview with a reporter from China Industry News, "The construction of large-scale ultra-high voltage and ultra-high voltage transmission lines not only brings huge business opportunities to the high-voltage switch industry, but also greatly promotes the development of technological level. promote". According to reports, in recent years, the high-voltage switch industry has continued to maintain a boom in production and sales. Last year, the total industrial output value was 96.094 billion yuan, an increase of 15.227 billion yuan over the previous year, and a growth rate of 18.83%. At the same time, the industry's research and development efforts have been continuously increased, the independent innovation has achieved remarkable results, the product structure adjustment has achieved breakthrough progress, and the output value of new products has reached 26% of the total industrial output value. Source: hvsi.cn

The power industry full of vigor and vitality has brought rare opportunities and severe tests to the high-voltage switch industry. The reporter learned that high-voltage switch products are an important part of power transmission and transformation projects, and their high-end technology has always been monopolized by foreign companies. The industry has grown significantly over the past decade and is now considered "world class". Its impressive performance is that its output ranks first in the world, its leading products adopt international standards, and it is not inferior to competing with multinational companies such as ABB and Siemens.

Recently, the construction of ultra-high voltage and ultra-high voltage power grids has stimulated the demand for high-end products in the field of power transmission and transformation. The urgent situation of "market-forced technology" has further spawned many technological innovations in the high-voltage switchgear industry, and its outstanding performance is remarkable:

High Voltage AC SF6

The technical level of circuit breaker products has reached the advanced level of similar products in the world, breaking the monopoly of foreign companies in this field; the market share of vacuum circuit breakers in the medium voltage field is as high as 97%.

The development of DC transmission technology is changing with each passing day. The manufacturing industry is led by Xi'an High-voltage Electrical Appliance Research Institute, relying on ultra-high voltage and ultra-high voltage transmission engineering projects, and has achieved re-innovation on the basis of completely introducing and absorbing world advanced technologies; A lot of work has been done in the development of technology and methods, DC equipment testing, and the formulation of relevant standards. It has the world's advanced software and hardware facilities that must be engaged in the research of AC and DC power transmission engineering systems, and has created a group of high-quality high-voltage DC power transmission engineering system research and complete design teams; The research and design of HVDC transmission engineering and the supply of complete sets of equipment related to the converter station. At present, the research of UHV DC transmission engineering system research, technology and method of complete set design, DC equipment test and other related projects are being carried out.

In addition, the UHV products developed by Xi'an Xikai High Voltage Electric Co., Ltd., Pinggao Group Co., Ltd., and New Northeast Electric (Shenyang) High Voltage Switchgear Co., Ltd. have successively passed the type test of Xi'an High Voltage Electric Appliance Research Institute in May this year; the industry The self-developed 800kV tank circuit breaker and 800kV GIS have filled the domestic gap, and the technical level has reached the international advanced level.

The journey still has fetters

According to the reporter's understanding, in recent years, the market situation of more than 100 million kilowatts of installed capacity per year has kept the high-voltage switch industry in a boom cycle, with full orders from enterprises and a booming scene.

"Apart from the order, what has the company gained?" said Li Ye, director of the National Development and Reform Commission's major technical equipment coordination office, who is well versed in the management of my country's electrical industry.

According to him, in 2007, my country imported 7 billion US dollars of various high, medium and low voltage switchgear and key accessories, and 80% of the high-end electrical products required for underground substations in subway construction and urban network reconstruction were imported products. Based on this, he believes that from the national macro level, the current supply capacity of the high-voltage switch industry is the satisfaction of quantity, not quality. He also said that at present, some domestic users do not buy domestic equipment, and they always feel that the phenomenon of "foreign moon is more round than China" exists objectively, resulting in many high-voltage switch products being "excluded" by key projects. However, from the analysis of the high-voltage switch industry's own situation, "from the perspective of key projects and the requirements of key users' satisfaction rate, there is a long way to go." Please visit: High-voltage switch network for more information

In this regard, the industry generally agreed. Li Zhaolin told reporters that the technical quality of high-voltage switch products has been greatly improved and improved in recent years. By importing, digesting and absorbing foreign technologies, it has developed high-end product development capabilities, and has performed well in supplying UHV test line segments. However, there is still a gap between the operational reliability level of high-volume products and foreign products. According to him, 90% of the industry is private and private enterprises, and the capabilities and levels of enterprises vary. At present, the market is oversupplied and the phenomenon of repeated construction is serious. The quality and process consistency problems of some products have not been fundamentally improved so far.

The reporter learned from interviews that promoting enterprises to improve product quality and actively adopt advanced technology has always been the focus of the high-voltage switch branch, and many measures have been taken successively.

It is certain that the awareness that there is no high-quality mainframe without high-quality accessories has been highly valued by the industry and enterprises, and has been deeply rooted in the hearts of the people. According to reports, since 1989, in response to the non-standard market of accessory products, the branch has insisted on carrying out the evaluation work of accessory manufacturers and products, and recommended the quality and reliability of the OEMs through the "High Voltage Switch Industry Newsletter" and China High Voltage Electric Network. High quality accessory products to ensure the quality of the host.

Experts believe that there are still constraints on the development of the industry. The more common problems are that the technological innovation ability is not enough, and there are not many self-owned brand products; there are many appraisal results of new products and new technologies, but they belong to high technology content, major technological innovation or realization. There are not many projects of technological breakthroughs; most of the products are the results of trial production and secondary development of foreign products, and there are few well-known brands and patented technologies that are truly self-developed for the first time and have Chinese intellectual property rights.

Innovation becomes the driving force

Industry insiders believe that the development of the power market represents the demand trend of today's high-voltage switch market to a certain extent, and meeting the power demand is undoubtedly the first task of the high-voltage switch industry.

Looking forward to the future market situation, investment in power grids will accelerate the support of the industry's prosperity. Lin Yida, deputy secretary general of China Electrical Equipment Industry Association, told reporters that the output of power generation equipment reached a historical peak of 130 million kilowatts in 2007, and power transmission and transformation equipment that lags behind power generation equipment will surely usher in a new high-speed development in 2008 and beyond. He revealed that according to the survey of the electrical industry, the power transmission and transformation industry will maintain a good momentum of development throughout the "Eleventh Five-Year Plan" period.

At the same time, Chang Hao, deputy general manager of State Grid DC Construction Company, gave an even more exciting introduction to the future UHV and EHV power grid construction projects. According to him, in the next two or three years, a number of "electric highways" will be started one after another, especially the localization route of self-centered and independent innovation will bring great opportunities to the domestic high-voltage switch manufacturing industry.

"The quality of high-voltage switchgear is very important to the safe and stable operation of the power grid. With the continuous expansion of transmission capacity, the requirements for its technical quality are getting higher and higher." Chang Hao said frankly, as a user, he hopes that the manufacturing industry will follow the principle of "quality is forever unchanged." The concept of "theme" provides high-quality products for power grid construction on schedule, so as to increase users' confidence in using domestic equipment. A document in hand of the reporter shows that during the "Eleventh Five-Year Plan" and the following period, the power industry construction represented by large coal power, large hydropower, large nuclear power and ultra-high voltage has continued to develop rapidly, the construction of power grids and the development of power transmission and transformation technology. The technical performance, operational reliability and product quality requirements of high-voltage switchgear are getting higher and higher. The reporter further learned that, according to the plan of China Electrical Equipment Industry Association, 2008 is the year when the industry catches up with the world's advanced level, produces results and produces products. The head of the secretariat of the high-voltage switch branch told reporters, "The work plan of the high-voltage switch branch this year is that the key equipment for 1000 kV AC transmission and ±800 kV DC transmission will be delivered on time, and will be installed and commissioned. At the same time, it is necessary to meet the The demand for a large number of high-demand and high-standard power transmission and transformation products in the snow disaster reconstruction work.”

Being in this conference, through listening to the briefings of government officials, the analysis of association leaders, the voices of key users, and the interaction between entrepreneurs, the reporter clearly felt that meeting the needs of the power industry for safety, energy saving, high efficiency and environmental protection will be the future high-voltage power industry. The direction and focus of switch product research and development. At the same time, I deeply feel the sense of urgency, mission and responsibility of industry insiders to break through the core technology of power transmission and transformation as soon as possible. Zheng Jun, director of Xi'an High Voltage Electrical Apparatus Research Institute, made it clear that as a member of the high voltage switch industry, we must be down-to-earth and do every job conscientiously. The prosperity of the industry requires each of us to make efforts. "In order to realize localization as soon as possible, we must speed up independent innovation, make great efforts to promote product structure adjustment, improve product quality and economic benefits, and achieve sound and rapid development of the high-voltage switch industry." Yuan Fuxing, deputy secretary-general of the high-voltage switch branch, said.