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A method for assessing the short-term ability of power grid to accept renewable energy

A renewable energy and capacity technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problem of failure to reflect the consumption capacity of the power grid system, failure to provide reference for power grid system scheduling, and restrictions on the ability of the power grid to accept renewable energy, etc. problems, to achieve the effect of simple operation, strong applicability and comprehensive consideration

Active Publication Date: 2019-06-04
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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Problems solved by technology

In order to ensure the reliability and economy of power system operation, the ability of the grid to accept renewable energy is limited
A large number of studies have been carried out at home and abroad on the short-term capacity of wind power and photovoltaic renewable energy in the power grid, but the indicators proposed so far only reflect the maximum installed capacity of wind power and photovoltaic power from the local and system levels, and cannot provide reference for power grid system scheduling And it fails to reflect the absorptive capacity of the grid system

Method used

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  • A method for assessing the short-term ability of power grid to accept renewable energy
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  • A method for assessing the short-term ability of power grid to accept renewable energy

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Embodiment Construction

[0038] In order to better understand the present invention, the present invention will be further described below in conjunction with specific embodiment:

[0039] The short-term time scale referred to in the present invention is within days, and a method for assessing the short-term capacity of a power grid to accept renewable energy includes the following steps:

[0040] (1) Select the influencing factors of the grid's short-term ability to accept renewable energy:

[0041] Factors affecting the short-term ability of the grid to accept renewable energy include AGC reserve level, short-term fluctuation of net load, system economic peak-shaving capacity, system peak-shaving demand, and grid transmission channels; for regions with a super high proportion of wind and solar (similar to the Three North regions) Only the transmission channel of the power grid has a certain impact on the capacity of the power grid. Generally, the transmission channel does not affect the capacity of ...

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Abstract

The invention relates to the technical field of a power market, specifically to an assessment method for short-term renewable energy admitting ability of a power grid. The influence factors for the short-term renewable energy admitting ability of the power grid comprise AGC backup level, a net load short-term fluctuation value, system economic peak adjusting ability, system peak adjusting requirement and a power grid external transmitting channel; assessment indexes for the short-term renewable energy admitting ability of the power grid comprise system frequency modulation ability adequacy and system peak adjusting ability adequacy; the system frequency modulation ability adequacy is defined as a ratio of system frequency modulation ability to system frequency modulation requirement; the short-term renewable energy admitting ability of the power grid can be assessed by working out the system frequency modulation ability adequacy; and the assessment method is all-around in consideration, simple and convenient to operate, and high in applicability.

Description

technical field [0001] The invention relates to the technical field of electric power market, in particular to a method for assessing the short-term ability of a power grid to accept renewable energy. Background technique [0002] In recent years, my country's clean energy has developed rapidly. According to China's 2050 high-proportion renewable energy development scenario and path research, by 2050, China's annual wind and solar renewable energy power generation will account for 63.6% of the total power generation. The promotion and development of a high proportion of renewable energy has become the norm in my country's energy development. The large-scale utilization of wind and light energy comes from the energy saving and emission reduction benefits of power generation, but at the same time, due to the fluctuation and randomness of wind and light output, the uncertain factors on the supply side of the power system are increased. In order to ensure the reliability and ec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q50/06
CPCG06Q50/06H02J3/00H02J2203/20
Inventor 林溪桥严旭韩帅秦丽娟曾博张阁高立克杨艺云
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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