In the vast Gobi Desert，An Old Wind Farm Achieves Phoenix Nirvana、Rise from the ashes。From 1.5 MW to 2.0 MW to 2.5 MW，Until the first in Ningxia“Replacing the small with the big”Pilot project——State Power Investment Zhongwei Xiangshan Wind Farm Renewal Pilot Project 6.25 MW large inland units online，It has recorded the development and changes of the mainstream wind power models in China in the past ten years.，It has become a milestone in the upgrading and transformation of old wind farms.。July 19，The project ushered in the first anniversary of full capacity grid-connected power generation.。

The Transformation of a Wind Farm，What are the breakthroughs behind the wind power industry?？How to realize the old wind farm“Nirvana rebirth”？Of the wind farm“Replacing the small with the big”An answer is given by the renewal pilot project.。

Dead wood meets spring 

Old wind farm“Break the cocoon into a butterfly”

Zhongwei City is one of the areas with the richest wind energy resources in Ningxia Hui Autonomous Region.。The mountains in the south of Zhongwei are rolling.，The main peak is magnificent，It's for“Fragrant Hill”。State Power Investment Zhongwei Xiangshan Wind Farm is located here.。“From the beginning of the 21st century，The State Power Investment Corporation has made every effort to promote the coordinated development of centralized and distributed new energy.。2011，The Xiangshan Wind Farm was officially put into operation，It has become the first grid-connected wind farm in Shapotou District, Zhongwei City, Ningxia.，It is also the largest wind farm in Shapotou District.。”Wu Yang, deputy general manager of Zhongwei New Energy of State Power Investment Corporation, told Zhongneng Media.，The total installed capacity of the wind farm is 148.5 MW，It has been in operation for more than 12 years before the renovation.。From 2021，To improve energy efficiency，And that service life of the wind farm is prolon，Reduce operation and maintenance costs，The wind farm began to improve the quality and efficiency of the wind farm.“Replacing the small with the big” Reform 。Through the unremitting efforts of the project builders，Original 99 units 1.5 MW small wind turbine，“Make a complete change”For 24 units 6.25 megawatt windmill。The project adopts Sany Heavy Energy 6..25 MW Wind Power Equipment，At constant total capacity，The number of wind turbines has been reduced by three quarters，Unit availability increased to 99.7%Above。

“When the upgrading and transformation began in that year，The epidemic has not been fully liberalized.，Unit transportation、The movement of personnel has been restricted.，In the Gobi Desert, the cold wind is biting.。But in order to put the project into production as soon as possible,，We prioritize production、Coordinate transportation、Send more people，The number of people on the project site has doubled.。”Dong Xinfeng, the project manager of Zhongwei Xiangshan of Sany Heavy Energy, remembered the scene of that year.。 “Take this project as the carrier，The State Power Investment Corporation has realized the landing of many innovative projects.，These include three practical patents and two scientific research projects of the group.。”Wu Yang said，Zhongwei Xiangshan Wind Farm aims to improve the quality and efficiency of existing wind power projects，Rely on“Isochoric update+Capacity increase”The pattern of，Fully excavate the old wind farm land、Wind energy resource value。It is reported that，The item after isochoric replacement，The second phase of construction will be started.。The total installed capacity of the second phase project is also 148..5 MW，There is no need for land acquisition.，The capacity is increased in the original wind field.，Sany Heavy Energy 6 will still be used.25MW Wind Turbine。“Replacing the small with the big”The efficiency and benefit of power generation are greatly improved.，Under the same wind resource condition，More empty seats are freed up，Ffectively save land resource，Leap-forward upgrade of wind capture capability of the unit，Generate more electricity with fewer fans。

Unlimited potential

 “Replacing the small with the big”Market space is beginning to show

More than a decade ago.，Be known as“Go to the south of the Great Wall”Ningxia，With its unique scenery resources,，Successfully boarded the express train of China's new energy development，Become the first comprehensive demonstration area of new energy in China。Here，Wind farms are springing up like mushrooms after a spring rain.，Constructed the northwest region.“Green line of defense”。More than a decade later，Facing the wind farm“Aging”The challenge of，Ningxia has once again become the pioneer of national reform.。2021，Released by Ningxia《About Developing Old Wind Farms in Ningxia“Replacing the small with the big”Notice to update the pilot》，Become a pioneer in upgrading wind farms。June 2023，The National Energy Administration has promulgated《Management Methods for Upgrading and Decommissioning of Wind Farms》（Hereinafter referred to as《Management measures》），It fills the policy gap in the upgrading and decommissioning management of wind farms in China.。《Management measures》Put forward，If the operation time exceeds 15 years or the capacity of a single unit is less than 1.Upgrading of 5 MW wind farm。This move foreshadows，In the large wind power base、Offshore wind power、After rural wind power，Upgrading and transformation of wind farms will become a new growth pole of wind power development in China.。

According to the China Wind Energy Association，By the end of 2023，12 million kilowatts of wind turbines have been operating for more than 15 years.，Have the need for transformation and upgrading。Anticipated“Fifteen five”End of term，There will be about 93 million kilowatts1.Wind turbines of 5 MW and below are facing upgrading.，The market prospect is broad。From the single unit capacity of the unit，According to statistics，The single unit capacity of units operating for more than 10 years is mainly concentrated in models below 2 MW.，The single unit capacity of units operating for more than 15 years is mainly concentrated below 1 MW.。Most of the wind turbines that will expire in service in 2025 are 0..5~1 MW model，Most of the wind turbines that will expire in service in 2030 are 1~2 MW model。“Replacing the small with the big”After upgrading and transformation，More installation space will be released from the blank machine sites in the areas with superior wind resources.。According to the regional wind resources,，“Replacing the small with the big”The wind farms in urgent need of upgrading and transformation are mainly concentrated in Inner Mongolia.、 Jilin 、Heilongjiang、Liaoning、Xinjiang、Gansu、Ningxia、Shanxi、Shandong、Hebei and Jiangsu。Industry experts said，Expected by the end of 2025，“Three North”The scale of wind turbines with potential technological transformation demand in the region is about 38 million kilowatts.。“The developer is right‘Replacing the small with the big’The market is very promising，But at present, most of them are in a wait-and-see attitude.。The main reason is the problem of electricity price subsidy.，If there is no clearly defined policy，It is impossible to estimate the rate of return on investment.，It won't start easily.‘Replacing the small with the big’。”Liu Jianting, key account manager of Sany Heavy Energy, said.。According to the National Development and Reform Commission《Notice on Issues Related to the New Energy On-grid Tariff Policy in 2021》，From 2021，For newly approved onshore wind power projects，No more subsidies from the central government，Implement parity access to the Internet。“Replacing the small with the big”Wind farms of the right age will be completed and put into operation before 2021.，All of them enjoy state financial subsidies.。If rebuilt during the subsidy period，It will face the problem of how to liquidate the follow-up subsidies.。Take the State Power Investment Zhongwei Xiangshan Wind Farm Upgrading and Reconstruction Project as an example.，According to introduction，The first phase of the isovolumetric renewal project will continue the subsidy policy until 2031.，Upon expiration, the on-grid electricity price shall be implemented according to the new grid-connected projects.，The second phase of the capacity expansion project will implement the on-grid tariff according to the new project.。The reporter combed and found，《Management measures》Since the release，There is already Zhejiang、Hebei、Gansu、Ningxia、Fujian and other provinces and regions issued a notice on the declaration of upgrading and decommissioning of wind farms in 2024.。Among，Ningxia《About Developing Old Wind Farms in Ningxia“Replacing the small with the big”Notice to update the pilot》Clear，Equal volume renewal and unexpired subsidy are two conditions for enjoying the original subsidized electricity price.。According to different local policies and electricity price requirements，Zhongwei Xiangshan Wind Farm Upgrading and Transformation Through the Practice of Landing Subsidy Policy，It provides a reference for the transformation of wind farms in other regions.。

With the advancement of pilot construction,，The support policies of local governments are gradually being refined.。Industry feedback，At present“Replacing the small with the big”The economic benefits of the project are becoming more and more mature，With the gradual improvement of the electricity market and the green certificate and green electricity trading mechanism,，The transformed wind farm can obtain stable income.，Thus stimulating greater investment and participation.。

Foreseeable，With the aging of many wind turbines，Wind power market“Replacing the small with the big”Upgrading is about to enter a peak period.。

 

Source：《China Electric Power News》