Micro-grid medium and small hydropower station abandoned water electric quantity calculation method considering runoff volume

A technology of small hydropower stations and calculation methods, which is applied in calculation, electronic waste recycling, single-network parallel feeding arrangement, etc., and can solve problems such as difficulty in satisfying the applicability, practicability and applicability of calculation methods

Pending Publication Date: 2019-04-16
广东电网有限责任公司韶关供电局
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Problems solved by technology

It can be seen that the existing technologies for calculating the power generation, generation capacity and installed capacity of the microgrid distributed power system do not fully

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  • Micro-grid medium and small hydropower station abandoned water electric quantity calculation method considering runoff volume
  • Micro-grid medium and small hydropower station abandoned water electric quantity calculation method considering runoff volume
  • Micro-grid medium and small hydropower station abandoned water electric quantity calculation method considering runoff volume

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] Such as figure 1 A method for calculating the amount of abandoned water in small and medium-sized hydropower stations in microgrids based on runoff is shown, including the following steps:

[0036] S101 Obtain the annual, monthly and daily runoff data of the small hydropower station's inflow flow from the database for processing, calculati...

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Abstract

The invention belongs to the technical field of power systems and automation thereof, and relates to a micro-grid medium and small hydropower station abandoned water electric quantity calculation method considering runoff volume. The invention is directed to the uncertainty of the inflow flow of the small hydropower station, the wind speed of the wind farm, and the sunshine intensity of the photovoltaic power station. The probability analysis method is used to calculate the initial flow value of the small hydropower station, the wind farm, the wind farm, the wind farm speed, and the solar farm's sunshine intensity according to the normal distribution law. Considering the limitation of the voltage variation in the microgrid and the microgrid accessing the distribution network, the installedcapacity is reduced according to the proportion of the initial installed capacity of small hydropower stations, wind farms and photovoltaic power stations. The expected goal is to achieve new energyutilization. The power generation efficiency, the utilization rate of power generation equipment, and the annual utilization hours of power generation equipment are maximized, and the amount of powergeneration in the operating cycles of day, month, year, and years is increased.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof, and relates to a method for calculating the amount of abandoned water in small and medium-sized hydropower stations in microgrids considering runoff. Background technique [0002] A microgrid is a grid form that integrates distributed sources (small hydropower, small wind power, photovoltaic power generation)-loads (water, electricity, gas, cooling, and heat loads) in a certain way. The microgrid is connected to the main grid at voltage levels such as 380V, 10kV, and 35kV. Under normal operating conditions, it operates in parallel with the main grid. Under heavy load, the microgrid absorbs power from the main grid, and may inject power into the main grid under light load. Power: In the case of a partial fault in the main grid or in the case of a fault in an adjacent micro-grid, it can operate in an isolated grid. Under the premise of ensuring power quality, t...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06H02J3/38
CPCH02J3/38G06Q10/06375G06Q50/06Y02W30/82
Inventor 陈永进吴杰康翁兴航
Owner 广东电网有限责任公司韶关供电局
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