Resource comprehensive utilization method for hydraulic power plant by adding biomass power generation apparatus

Abstract

The invention relates to a resource comprehensive utilization method for a hydraulic power plant by adding a biomass power generation apparatus. According to the method, the biomass power generation apparatus is added in or close to the hydraulic power plant; the installed capacity of the biomass power generation apparatus is less than or equal to a difference value between the installed capacity of the hydraulic power plant and the average output of the hydraulic power plant in a normal season and a dry season; a control protection system of the hydraulic power plant is upgraded to be an HBDCS control protection system; an excitation system of the biomass power generation apparatus is endowed with an overexcited function; in wet seasons, the biomass power generation apparatus can run in a phase modulation manner according to a dispatching instruction issued based on reactive electric quantity balance by a power grid dispatching center so as to overcome the shortcoming of insufficient reactive power of the power system; and in normal seasons and dry seasons, the biomass power generation apparatus can run at a relatively high power factor to generate more active electric quantity. According to the resource comprehensive utilization method, the power supply volume of the hydraulic power plant can be improved by 40-100%; the fixed cost of power transmission and transformation units of the hydraulic power plant can be reduced by 20-50%; the investment for the biomass power generation apparatus can be saved by 20-35%; and therefore, the comprehensive utilization and the value maximization of water power resources, the biomass resources and the hydraulic power plant stock assets are realized, and an accurate poverty-alleviation effect for the surrounding farmers and herdsmen is realized as well.

Description

technical field [0001] The invention relates to the field of energy, in particular to a resource comprehensive utilization method for adding biomass power generation devices to hydropower stations. Background technique [0002] Biomass includes crops, trees and other plants and their residues, livestock and poultry manure, organic waste, etc., through industrial processing and transformation, it can produce bio-based products (Biobased products), biofuels (Biofuels) and bioenergy (Bioenergy) . Photosynthesis on Earth produces about 220 billion tons of dry biomass per year, equivalent to 10 times the total global energy consumption. [0003] According to statistics, 60% of my country's crop straw can be used for energy purposes, which is about 210 million tons of standard coal, and about 40% of forest mining residues are unprocessed and utilized. The existing biomass energy available for development can reach at least 450 million tons t standard coal, and there are about 133...

AI Technical Summary

Problems solved by technology

There are four main problems: first, the large investment per kilowatt, resulting in high fixed costs; second, the high proportion of fuel costs, especially the high logistics costs of fuel, and the high moisture content of raw materials for storage (about 40%); The supply of raw materials is unstable; the fourth is that the combustion and thermal efficiency of biomass boilers are low

In general, my country's hydropower stations are generally in a state of meager profit or loss due to the low power generation in flat and dry seasons and the low utilization rate of power transmission and transformation facilities for supporting investment and construction, and the amortization of fixed costs is large.

[0009] Hydropower stations are generally located in mountainous and hilly areas, and the surrounding biomass resources are very rich. How to use the local abundant and storable biomass resources, add biomass power generation devices in or near the hydropower station, and operate with phase adjustment in the wet season, and the flat and dry seasons Generating active power, increasing the power supply and asset utilization rate of hydropower stations in normal and dry seasons, revitalizing the almost idle stock assets of power transmission and transformation facilities in flat and dry seasons, alleviating the contradiction between power grid abundance and drought, reducing investment in biomass power generation devices, and reducing biomass raw materials Logistics costs not only improve the operating efficiency of the hydropower station, but also increase the income of farmers and herdsmen around the hydropower station, achieve the effect of targeted poverty alleviation, and realize the comprehensive utilization and value maximization of hydropower resources, biomass resources, and stock assets of the hydropower station. No public reports have yet been made

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