Automatic active-power control method with both safety of power grid and minimum light waste considered for photovoltaic power stations

A technology for photovoltaic power station and power grid security, applied in control/regulation systems, regulating electrical variables, instruments, etc., can solve the problems of abandoned light, difficulty in ensuring scheduling fairness, and inability to restore the active power of photovoltaic power plants in time.

Active Publication Date: 2014-09-10
TSINGHUA UNIV +2
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Problems solved by technology

This method relies on the experience of the operators, and it is difficult to guarantee the fairness of dispatching. At the same time, when the security of the power grid is not limited an

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  • Automatic active-power control method with both safety of power grid and minimum light waste considered for photovoltaic power stations
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  • Automatic active-power control method with both safety of power grid and minimum light waste considered for photovoltaic power stations

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Embodiment Construction

[0023] The active power automatic control method of the photovoltaic power station proposed by the present invention, which takes into account the safety of the power grid and minimizes light waste, includes the following steps:

[0024] (1) From the data collection and monitoring control system of the power grid, collect the real-time down-spinning of the automatic power generation control unit of the current power grid, the active power deviation of the connection line between the photovoltaic power station and the power grid, and obtain the photovoltaic power station that can be accepted by the power grid from the power grid dispatching center active power Collect the real-time active power p of each photovoltaic power station connected to the grid w , active power lower limit Estimated maximum active power The real-time active power p of the connection line section between each photovoltaic power station and the grid s and active power cap

[0025] (2) Obtain the ...

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Abstract

The invention relates to an automatic active-power control method with both safety of a power grid and the minimum light waste considered for photovoltaic power stations and belongs to the technical field of operation and control of a new energy resource integration system. The automatic active-power control method includes taking active power of the photovoltaic power stations involved in automatic active-power control as control variable, the security constraint of the power grid and active-power adjustment capacity of the photovoltaic power stations as constraint conditions and the minimum light waste and the minimum active-power load rate deviation of the photovoltaic power stations as dual goals to construct the quadratic programming problem, efficiently solving by an interior point method, preferentially utilizing photoelectricity resources on the premise of safety of the power grid and considering fair-share scheduling among the photovoltaic power stations. The automatic active-power control method can be integrated into an active-power control master station system for photovoltaic power generation so as to implement the most proper control strategies according to the operation states of photovoltaic power generation and the power grid, guarantee sufficient backspin spare safety space for the power grid, active power at sections of connecting lines of the photovoltaic power stations and the power grid is safe, and fair-share scheduling among the photovoltaic power stations is considered.

Description

technical field [0001] The invention relates to an active power automatic control method of a photovoltaic power station that takes into account the safety of the power grid and minimizes light waste, and belongs to the technical field of operation and control of new energy access to power systems. Background technique [0002] The characteristics of strong randomness of optical resources, difficulty in forecasting, and anti-peak regulation make it more difficult to dispatch and control the active power of the power grid. How to maximize the utilization of photovoltaic power generation resources and absorb as much photovoltaic power generation as possible under the premise of ensuring the safety of the power grid has become one of the common challenges faced by the power grids where photovoltaic power generation bases are located. At present, the industry has conducted a lot of research on active power dispatching control after photovoltaic power generation is connected, and...

Claims

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Application Information

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IPC IPC(8): G05F1/66
Inventor 郭庆来王宏志王彬王东方吴文传贾昆孙宏斌张海宁张伯明李春来汤磊杨立滨
Owner TSINGHUA UNIV
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