Power Planning Method for Distributed Hybrid Generation System

Abstract

The invention provides a distributed hybrid power generation system power source planning method. The distributed hybrid power generation system power source planning method comprises the following steps that: pre-planning is performed so as to determine the number of wind turbine generator sets, photovoltaic arrays and small-sized hydropower stations and energy storage batteries which are considered to be installed, and a plurality of optional planning schemes can be generated according to a permutation and combination method; output power models of the wind turbines, the photovoltaic arrays, the small-sized hydropower stations and the energy storage batteries are respectively established; the system load power shortage rate and system energy excess rate of each optional plan are calculated, and whether each optional scheme accords with system reliability requirements is judged respectively, if the optional schemes accord with the system reliability requirements, subsequent steps are executed, otherwise, the optional schemes are discarded; and according to the system load power shortage rates and system energy excess rates of the plurality of optional schemes that accord with the system reliability requirements, corresponding cost discounted present values are calculated and arranged according to an ascending order, and optional schemes of which cost discounted present values are small are adopted as recommendable plans. The distributed hybrid power generation system power source planning method of the invention has the advantages of stability, reliability, comprehensiveness, authenticity and more benefits.

Description

technical field [0001] The invention relates to the technical field of power system distributed power distribution network, in particular to a power planning method for a distributed hybrid power generation system. Background technique [0002] The access of renewable energy is one of the urgent problems to be solved in the development of smart grid. Distributed power generation is an important form of renewable energy access to smart grid. It has the advantages of flexible power generation, clean and environmental protection, and small investment amount. The forms of distributed power include photovoltaic array power generation, wind turbine power generation, small hydropower, micro gas turbine power generation, fuel cell power generation, etc. The hybrid power generation system composed of a variety of distributed power sources is very different from the current mainstream thermal power generation system in my country. In addition, due to the randomness and anti-peaking ch...

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Problems solved by technology

The hybrid power generation system composed of a variety of distributed power sources is very different from the current mainstream thermal power generation system in my country. In addition, due to the randomness and anti-peaking characteristics of renewable energy power generation, it can be Renewable energy power generation sometimes cannot be effectively connected to the grid, and the economics of using renewable energy power generation is not high, so it is urgent to carry out reasonable power supply planning for distributed hybrid power generation systems in advance

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