From the 'Winning Plan' in 1996 to now, China's wind power industry has entered the 'weak crown' year, and the wind power entering the 'adult period' has walked in the more mature and steady posture of the wave front of China's power system reform. After the industry has gone through large-scale development and fierce market competition, a series of quality improvement and efficiency work such as 'safety', quality' and 'efficiency' have been gradually put on the agenda. It is in this context that the magazine "Wind Energy" The sponsorship of the 'most beautiful wind farm' event came into being - from the outside to the inside, we tried to discover the beauty of wind power and show the story of the different 'listeners' to the industry.
Sweet Water Fort Wind Farm, the first cooperation is a model
There are many standards for 'beauty'. For wind power construction, there is a beauty of scale, a beauty of design, an ecological beauty, and a more efficient beauty. This sweet water castle wind farm is located at the top of the mountain at an altitude of more than 1,800 meters above sea level in Tianshui Town, Huan County, Gansu Province. To the reporters is the continuous optimization and progress of the quality of operation and maintenance, as well as the tireless pursuit of fine management. On this day, the highland winds of the Loess Plateau, young wind power people and 25 silently rotating fans, wrote the whole machine The successful chapter of the first cooperation between Shangzhong Zhuzhou Electric Locomotive Research Institute Co., Ltd. (hereinafter referred to as CRRC) and the owner China Resources Power Group (hereinafter referred to as China Resources).
'Sweet Water Fort Wind Farm is the first cooperation between China Resources Group and CRRC in the new energy wind power business. Overall, this is a very successful cooperation. The whole machine manufacturing level of CRRC is relatively high, and the unit is running stably. The performance of the market operation and maintenance team is also very good. In case of problems, it can respond in time. Thanks to the maintenance personnel of the CRRC, they have made great contributions and sacrifices for the wind field. In the interview process, the new energy operation and maintenance of China Resources and the Central Region Shi Jianming, general manager of the company, expressed his recognition of the cooperation and praise and recognition of the CRRC operation team.
It is understood that the first phase of the sweet water wind power project will install 25 sets of China National Vehicle WT2000D110 wind turbines with a hub height of 80m and a total installed capacity of 50WM. The wind farm started infrastructure construction in May 2015, and the first wind turbine was connected to the grid. In December, all wind turbines completed the '240' assessment and entered commercial use.
'The average wind speed of the sweet wind field in 2017 is 6.17 m / s, the theoretical power generation is 157.9 million kWh, and the on-grid electricity is 129 million kWh. The equivalent utilization hours of the wind turbines reached 2,693 hours, exceeding the feasibility of 7.72%. ' China Resources Group Sweet Water Fort The wind farm director Cao Jinxiang said. Undoubtedly, this is a number that both parties are very satisfied with.
As we all know, the problem of 'abandonment of wind and electricity' in the Three North Region has become the biggest constraint that has plagued the entire industry. There are figures showing that the average wind curtailment rate in the five northwestern provinces in 2017 was 24.6%. The economic losses brought about by the company have seriously affected the company's profitability and investment enthusiasm. At this time, 'reducing costs and increasing efficiency' has gradually become one of the most important industry themes and standards.
We will go back and look at the sweet water wind farm. In the case of a local power limit of 15% in 2017, the wind farm still completed 129 million kWh of on-grid electricity, which is behind the CRRC operation team and the owners. Optimize power generation efficiency and actively participate in the joint promotion of power marketization transactions.
Two breakthrough technology upgrades to help power generation efficiency rise frequently
With the improvement of the manufacturing level of wind turbines and technological advancement, the power generation rate of unit units has become possible. In 2017, in order to further meet the needs of the owners to maintain the stable operation of wind turbines and improve power generation efficiency, the CMU operation team is working on the fans. Equipment and electrical equipment have been optimized and upgraded by two major technical modules: converter and pitch.
'For the converter, the technical upgrade of the pitch is a big problem and breakthrough for any model in the industry. 'Chen Wenhuan, manager of the sweet water wind farm service of the China Bus Customer Service Center, said, 'We are on the one hand The software is upgraded to reduce the failure rate of the circuit breaker and increase the low wind speed power generation of the unit. On the other hand, the pitch is corrected by software and hardware upgrade.
The reporter learned that through these two technical upgrades, CRRC basically eliminated the failure of the fan in the circuit breaker and self-starting, which not only reduced the power loss caused by the fault, but also made the availability of the fan equipment reach 99.4%. The average MTBF exceeds 4000 hours, which greatly improves the reliable operation of the equipment and the increase of power generation.
On the other hand, based on a number of programs promoted by Gansu Province to promote new energy power priority scheduling and market-oriented transactions, China Resources also responded to the supply-side reform of the power market, actively seeking market power through power generation replacement, electricity trading, etc. The increase in total power generation in 2017 contributed an indispensable sum.
Fine management, improved maintenance quality, lower cost
In 2017, the average wind speed in Huan County was 6.17 m / s. From the data point of view, the wind resources of Sweet Water Fortress are not calculated. But with the advancement of the whole machine technology, the development standards of wind resources are also decreasing. Yes, more and more refined operation and maintenance management is also the best way to improve power generation efficiency and reduce operation and maintenance costs.
'At present, the per-capita management team of the CRRC operation team can reach 17-20 units/person. The entire sweet water wind farm has an installed capacity of 50,000 kW. We only have two operation and maintenance personnel stationed at the workstation. 'Talk about operation and maintenance capabilities, CRRC Zhao Shaowei, deputy general manager of Wind Power Customer Service Center, is very confident. 'Our operation and maintenance service has been exploring the fine management. CRRC has refined indicators on all aspects of wind farm operation, such as TBA, MTBF, fixed inspection, Spare parts, personnel training, etc., and use this as a traction to improve the technical and management capabilities of employees.
The improvement of the operation and maintenance personnel and the low failure rate of 0.04%/month are also the confidence of CRRC Wind Power to reduce the operation and maintenance personnel of the 50,000-kilowatt wind farm from 4 to 2 people.
It can be said that the current wind power industry's means of increasing efficiency from the technical level is nothing more than two points - technological innovation and refined management. Compared with technological innovation, the low efficiency of spare parts transportation required for fault repair is the biggest problem of operation and maintenance services. Improving the regional spare parts management capability has also become one of the main strengths of CRRC service.
According to Zhao Shaowei, based on the summary and analysis of the use of spare parts in various wind farms, CRRC has set up a spare parts warehouse serving the five northwestern provinces in Maojing Township, 140 km away from Tianshui Town, and established and optimized the transportation route. The supply speed of spare parts, but also reduce management costs and transportation costs.
'Including the intelligent operation and maintenance platform we are building, it is also a preventive operation and maintenance exploration based on refined management, and will be our key work for a long time in the future.' Zhao Shaowei said. The so-called preventive operation and maintenance Based on the big data platform, the operation data of each wind farm is analyzed, mined, and a smart operation and maintenance process of the fault prevention scheme is formed, and the possibility of fan failure is reduced from the root cause.
Rethinking the value of a wind farm
From the beginning of the interview, the author has been considering a question - what is the value of a wind farm.
Perhaps in the industry, the wind turbine is the asset, and the power generation is the value. As a clean energy source, wind power is a singular move. From this point of view, CRRC and the owner China Resources have made a perfect answer in the sweet water wind farm. ——The average wind speed in the first half of 2018 is 6.7 meters, and the wind farm theoretical power generation reaches 89 million kilowatt hours.
Huan County is located in the southeast of Gansu Province, east of Shaanxi Dingbian, west of Ningxia Guyuan. The annual precipitation is only 300 mm, the sunshine time is 2600 hours, and the evaporation area is 2000 mm. The perennial water shortage and strong wind make the original flat. The Jidong Plateau was plowed out of the stunning gullies and gullies.
The mountains in Huan County are covered by thick layers of loess, with few vegetation and loose soil. In the summer, when heavy rains change, roads will collapse. The current road leading to the wind farm is that we invested more than 3 million to rebuild, and in the future Every year, we will maintain a budget of 40-500,000 yuan on road repairs. 'Cao Jinxiang said.
The construction of the road not only ensures that the wind farm is completed and put into production as scheduled, but also greatly facilitates the villagers in the nearby mountains. In fact, not only the construction of the road, but also in the restoration of vegetation and soil and water conservation, China Resources also shoulders the responsibility of a state-owned enterprise.
Cao Jinxiang said that the Group has strict standards for water conservation and environmental protection work in every wind farm. Due to lack of water, restoration of vegetation has become the biggest problem in environmental protection work. The annual planting of trees in the wind field is not easy to lay down the grass seeds. Live. The grass seeds have been sprinkled for three years, until this year, the rain is more than in previous years, only to be able to break ground.
Standing on the top of the wind turbine, the grass, the sky complement each other, the white fan is patchwork. In this vast Loess Plateau, people feel their own small, but also sigh the power of human wisdom.
In the industry, China Resources is recognized as a quality customer. 'The people who cooperate with China Resources know that the spirit of the contract is the basic principle of cooperation. ' Referring to the corporate philosophy of China Resources, Shi Jianming said, 'I believe the owners and suppliers It is a mutually beneficial relationship. Only when we understand each other and mutual tolerance can we achieve a win-win situation.
As Shi Jianming said, a person in charge of the CSR Marketing Department has a deep understanding: Cooperation with China Resources is a covenant of trust and respect, but the more cooperation with companies that take into account the details and patterns, the more they can promote each other. Achieve a win-win situation.
Business has always been a protracted war. If you start with the creativity, capital and bravery, then the next thing to look at is toughness, rationality and pattern. It is foreseeable that the success of the first cooperation often indicates the future. A number of win-wins. The current wind power market will enter a new round of development climax in the three major areas of low wind speed, decentralized, and offshore wind power.
Exquisitely opened, and one hundred are waiting, this is really the best time!