Voltage electric energy situation estimation method for large photovoltaic power station

Abstract

The invention discloses a voltage electric energy situation estimation method for a large photovoltaic power station. The method comprises the steps of estimating a voltage electric energy situation of the photovoltaic power station in an early stage of establishing the large photovoltaic power station and in a running period of the power station, detecting an environment in a region where the photovoltaic power station is located, and obtaining environment data; processing the environment data, and building an environment model of the whole photovoltaic power station; modeling a photovoltaic battery pack, and performing combination to form a photovoltaic array; by modeling an inverter, a transformer and a power grid side, collecting a current to the inverter, and transmitting the current to the power grid side through the transformer; and establishing an assessment module, and giving out an assessment result for performing numeralization on voltage quality and an output situation of a power grid. According to the method, technical support and basic data are provided for consumption and construction of the photovoltaic power station, a basis is provided for wind and light abandoning electric quantity calculation, solar resources are fully utilized, and higher economic and social benefits are obtained.

Description

technical field [0001] The invention relates to power system technology, in particular to a method for estimating the voltage and power conditions of a large-scale photovoltaic power station. Background technique [0002] With the development of human beings, energy issues have become an important issue affecting the quality of human life. One of the main ways to solve the energy problem is to vigorously develop clean energy and optimize the energy structure. Compared with thermal power and hydropower generation, new energy represented by wind power and solar power has unique advantages, such as clean and pollution-free, renewable, and less affected by the region. In this context, the country began to attach importance to and vigorously support the photovoltaic industry, and the photovoltaic industry has developed rapidly. It is expected that during the "13th Five-Year Plan" period, the proportion of renewable energy will be greatly increased. By 2020, the installed capaci...

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Problems solved by technology

[0008] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a method for estimating the voltage and electric energy of a large-scale photovoltaic power station. Simulate the theoretical output of the power station to evaluate the output and voltage quality of the power station, find possible problems as soon as possible, provide technical support and basic data for the consumption and construction of photovoltaic power stations, provide a basis for the calculation of abandoned wind and photovoltaic power, and make full use of Solar energy resources, to obtain greater economic and social benefits

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