Giant Wind Bases: 10 Years at a Glance

Discussion on Wind Power Development Policy in Parity Era

Shi Jingli
Research Fellow, Energy Research Institute of NDRC

Based on the targets set out in the Energy Development Action Plan 2016-2030 that non-fossil energy accounts for 20% of primary energy and non-fossil energy accounts for 50% of total electricity generation, the share of electricity generated from renewable energy may need to rise from 27.6% last year to 33% at the end of the 14th Five-Year Plan Period. In addition, our country has now shifted the date of peak in carbon emissions from around 2030 to before 2030, in this context, the wind-solar power will add up to hundred gigawatts of new installed capacity each year.

The Overall Solution of the Distributed Wind Power and Multi-Energy Complementary in Parity Era

Zhang Wei
Vice President, Wind Energy Design Institute, Ming Yang Smart Energy Group Co., Ltd.

Our company has analyzed the current bidding cost in the Three Norths, Central Eastern and Southern China and Offshore, and the result is optimistic. Our considerations mainly include the equipment cost, and that the development of fan technology in the next two to three years may lead to the reduction of the construction cost of the whole wind farm. So in the long run, the cost of wind farm construction, whether onshore, large base in the Three Norths, onshore in Central Eastern and Southern China, including offshore in the future, should be significantly reduced. Especially in the Three Norths, judging from the new trend of this year, the host cost is expected to fall to about RMB 3,000 per kw or even less in the future base construction project with parity, and the investment cost of offshore construction will fall within RMB 15,000 per kw. Of course, the goal requires our harder work.

Study of the Development of Large-scale Wind Project with No Subsidy

Li Qiange
Product Marketing Manager, Envision Energy

Proper configuration of energy storage facilities can effectively cope with power brownouts. The integrated system of wind-solar power storage network launched by Envision Energy this year can achieve the coordinated construction of wind-solar power as far as possible. However, currently there are still some problems in this coordinated construction, and the more used is a single new energy electric field with separate energy storage facilities. In fact, energy storage facilities are very similar to wind turbines. Energy storage facilities also have two key indicators, one is capacity, the other is charging and discharging speed, similar to the single capacity and impeller diameter of wind turbines. When designing the integrated wind storage plan, we will fully consider the cost-effectiveness in respect of energy storage capacity and charge/discharge rate.

Ten Year Journey: Giant Wind Bases Enter to the New Era

Chen Qiuhua
General Manager of Solution Center of Wind Power Group, Xinjiang Goldwind Science & Technology Co., Ltd.

After the practice and exploration of the large base, we summarize four important factors: 1. Industrial development, technological progress, capacity improvement and ecological harmony still have some problems to be addressed, such as long operation cycle and lack of stability of power grid planning; 2. Wind resource assessment needs to be more precise, including the impact of wake turbulence; 3. In terms of operation and maintenance, ecological environmental protection, equipment quality and other issues need to carry out operation and maintenance technical transformation; 4. Consumption and trading are also the key issues to be addressed in the 14th Five-Year Plan Period.

Customized Wind Farm for Large Base in Accordance with Local Conditions

Chen Peng
Manager of Customized Solutions Department£¨Market Support Center, CSSC Haizhuang Windpower Co., Ltd.

There are four key points of wind farm customization: the first is site selection from a macro level. Choose the optimal area in the early stage of site selection, which also determines the success or failure of the development. The second is measuring the wind towers. When conducting large scale base development, it is suggested that in mountainous areas, increase radar retests in three special areas respectively in high, medium, and low altitudes. While the plain area can measure one wind tower, but it is suggested to increase to two or three towers in order to reduce risk. The third is the layout of wind turbines. According to the resources, it is recommended to add a tail flow recovery area greater than 14D behind the three or four rows when conducting large scale base development. The fourth is road and power lines planning. We need to discretize the geographic elements involved in roads. Geographic information such as wind farm access points, plant site conditions, sensitive areas, existing roads, and slopes are captured and incorporated constraints to maximize road design.

Discussion on the impact of typhoon and other catastrophic risks on wind power projects

Zhang Shiyi
Head of risk management department of Huatai Insurance Brokerage Co., Ltd

The offshore wind catastrophe model is divided into four core modules, namely, the wind farm module, the wind and wave intensity module, the analysis module, and the underwriting strategy module. One of the highlights is that the wind farm module is based on the classical wind farm model, which takes into account the complex undulating ground and terrain changes. The second highlight is that the maximum wind speed model is also based on typhoon data from the northwest Pacific Ocean, and the roughness database is plotted and edited in conjunction with the superimposition of complex downdraft surfaces including topographic roughness.