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Home > > Wind turbine news > > Wind power has a random, intermittent characteristics Wind power has a random, intermittent characteristics
Wind power has a random, intermittent characteristics, the objective need a certain amount of flexibility in adjusting the power to match. China¡¯s power structure is irrational, the system faces the growing problem of lack of peaking capacity. China¡¯s coal-dominated energy resource endowments determine the characteristics of our country with coal-based power structure, and in the coal-heating unit and installed in a large proportion, in order to meet the heating needs in winter, peaking capacity heating unit very limited; hydropower installed capacity in China, the run-of-a larger proportion of water, adjust the properties of a good proportion of small hydro, large hydro power plants by irrigation, navigation, flood control, utilization impact of peaking capacity is subject to certain constraints; nuclear power for safety and economic considerations generally do not participate in peak shaving. Constrained by the power structure has long been China¡¯s electric power system peak load capacity is insufficient. With the rapid development of large-scale wind power, the system is running in addition to the changes required to meet the load, but also contribute to tracking the fluctuations in wind power, wind power characteristics of the anti-peaking power peaking significantly increased the difficulty. Since peaking capacity shortage, "Three North" regions (Northeast, Northwest, North China) wind power base of local consumptive lack of capacity, coupled with small-scale cross inter-provincial network, wind power base abandoned the wind problem is more serious, causing great investment and waste of resources. Peaking power for the development of wind power generators development plan to achieve goals. Of the 2015 total of wind power installed capacity 100 million kilowatts in 2020 of 150 million kilowatts of wind power development goals, to improve existing units of peaking capacity, based on the future need to accelerate the construction of pumped storage, gas-fired power generation peaking power, and actively develop peak performance, high parameters, high-capacity, high-efficiency coal-fired units, and good speed regulation performance of large hydropower bases to meet system peak demand, wind power and peaking power to promote the coordinated development . Gas-fired power generation has a good ability to regulate and peak performance. Gas turbine with a full load from the start to run, usually less than 20 minutes, quick start, time can be shorter, so the spinning reserve and peaking units to become a good option. China should develop a certain small wind turbines amount of gas generation, and give full play to start the gas turbine fast, convenient adjustment of benefits, take the system peak load task. With gas prices rising, gas-fired power generation tariff higher. Integrated natural gas supply, price and other factors, the future construction of our gas-fired generation will be modest, mainly to serve as peaking power, and moderate development of combined heat and power unit cooling more. From the power system economic point of view, the scale of the development of gas-fired power plant needs further research to achieve the improvement of China¡¯s energy structure and meet the overall balance of power system peak load. Pumped Storage Power Station is the wind turbines most mature energy storage power supply. The development of pumped storage power station, can effectively reduce the coal-fired thermal power installed capacity, reducing the depth of coal-fired power peaking, improve the operating efficiency of coal to reduce fossil energy consumption, reduce greenhouse gas emissions. To meet and network after a large-scale wind power system peak load demand and system cost-effective operation of the "five" period, China needs to increase the pumped storage power station construction, and energy storage technologies to accelerate the development of demonstration . To promote coordination of wind power and pumped-storage development, the development of pumped storage power plant to fully consider the size and layout of sites for the distribution of resources and the structural characteristics of regional power supply. China¡¯s resource-rich sites for pumped storage, pumped storage power station pre-site national total over 130 million kilowatts. Eastern and central regions of China¡¯s electricity load centers, a large difference between peak power load, pumped storage power station site resources better, the next major base-load operation of nuclear power construction in the large-scale, large-scale outside calls (fire, wind bale) regulation rates are limited, so should increase the "three Chinese" (North, Central, East) and Southern Power Grid covers the construction of pumped storage power station area intensity; in the northeast and northwest regions, to meet large-scale wind power development, but also the need to accelerate send-side pumping region Related Questions: |
