| In recent years,my country has put forward the concept of "dual-carbon transformation" and sustainable green development,and the development of new energy technologies needs to be explored urgently.Wind power generation is regarded as the clean energy utilization method with the most development potential among new energy sources,and the large-scale construction of wind farms has important practical significance for solving the problems of resource shortage and environmental protection.The Mulan area mainly uses thermal power as the power supply,and the power generation is in a single form.With the development of the local social economy,the power load gradually increases.Heilongjiang’s "14th Five-Year Plan" outline points out that the long-term goal of 10 million kilowatts of new wind power installed capacity should be achieved by 2035.The Mulan area is rich in wind resources and has the conditions for building wind farms.In response to the national call,local energy advantages will be brought into play.,This paper proposes the design scheme of the 99.2MW wind farm in Mulan area based on the actual demand.This paper firstly investigates the economic situation and the status quo of the power grid in Mulan area,analyzes the close relationship between the wind power system and the power grid system in detail,and clarifies the development scale and power dispatching plan of the wind farm.Then,the current situation at home and abroad was discussed.According to the theory of wind power generation,the maximum utilization rate of wind energy was obtained,and the permanent magnet synchronous generator model was used to propose optimization strategies to deal with the volatility,randomness and unpredictability of wind energy.relationship with output power.Then,referring to the meteorological data of the Mulan area in the past 20 years,the site selection is carried out,and the measured data of the wind farm wind towers are sorted and analyzed.The annual on-grid electricity of the wind farm can be accurately calculated under the condition of various discounts.Then,the scheduling relationship is clarified,the line path scheme is formulated,and the wire vibration prevention optimization is carried out.Finally,the electrical part of the wind farm is designed.In the electrical primary part,the main wiring layout is designed,the electrical equipment is selected through short-circuit current calculation,the lightning protection and grounding protection is performed on the booster station side of the system,and the primary side equipment layout plan is formulated;In the electrical secondary part,a design scheme is proposed for the system protection module,including the selection of safety automatic devices and system protection devices,a set of wind power prediction system is given,and the supporting devices are arranged.Based on the analysis and research of the meteorological conditions,geographical conditions,wind measurement data,and current status of the power grid in the Mulan area,this paper designs a wind farm.Install 31 wind turbines with a single capacity of 3200 k W,with a total capacity of99.2MW.The low-temperature wind turbines of IECIIIC and above are selected.The hub is erected at a height of 100 m.Compared with the factory,it can save about 34,900 tons of coal per year,and correspondingly,it can also reduce the emission of various air pollutants every year,which has good development value.After being connected to the grid,the power supply structure of the power grid in the Mulan area can be enriched,and the local renewable energy can be fully utilized. |