An Optimal Scheduling Method of Power System Considering Photoelectric Access
A technology for optimizing scheduling and power systems, applied in system integration technology, information technology support systems, electrical components, etc., can solve the problem of lack of accurate control of photovoltaic field output, and achieve the effect of economic benefits
Active Publication Date: 2021-10-22
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO +2
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Problems solved by technology
It shortens the prediction time and improves the prediction accuracy of photoelectric output, but lacks more active and accurate control of photoelectric field output, and still passively eliminates fluctuations in photoelectric output, and its cost savings is achieved passively by relying on smaller fluctuations in photoelectricity
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[0027] The specific embodiments of the present invention will be further specifically described below through specific embodiments in conjunction with the accompanying drawings.
[0028] Such as figure 1 As shown, it is a flow chart of the optimal scheduling method of the present invention, including the following steps:
[0029] A) Obtain day-ahead load forecasting, transmission network topology, basic data of conventional units and backup plans, in units of hours, and divide the whole day into 24 periods, and build a mathematical model for day-ahead optimization:
[0030]
[0031]
[0032] Among them, M is the number of all conventional units, p i.T is the operating power of conventional unit i in T period, a i , b i and c i are the quadratic coefficient, the primary coefficient and the constant of the operation cost of the conventional unit i respectively, p D.T is the system load forecast value in T period, is the predicted value of photoelectric output in T p...
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The present invention relates to the field of power grid scheduling optimization, in particular to a power system optimization scheduling method considering photoelectric access, including the following steps: A) making a day-ahead plan; Score K w And initialize, according to the quality score K of each optical field w Update the day-ahead plan to form an intraday plan; C) Real-time control the conventional unit to execute the intraday plan within the time period, track the output of each photoelectric field and the output level of the conventional unit, calculate the photoelectric consumption benefit △E at the end of the period, and update each unit according to △E Optical field quality score K w , repeat steps B‑C until the scheduling of one day is completed. Improve the consumption of photoelectricity through short-term prediction with high prediction accuracy. At the same time, track the actual effect of photoelectric consumption by setting the quality score of the photoelectric field and the income of photoelectric consumption, and feed back into the intraday plan to make the consumption of photoelectricity more efficient. With initiative, the economic benefits of the photoelectric field can be brought into greater play.
Description
technical field [0001] The invention relates to the field of power grid scheduling optimization, in particular to a power system optimization scheduling method considering photoelectric access. Background technique [0002] Under the background of national energy reform, clean energy has achieved rapid development. Among them, wind and photovoltaic are developing most rapidly. Photoelectric fields are mainly built in areas with relatively rich wind energy resources such as mountainous areas and rural areas, while photovoltaic fields are mainly used in cities. It is mainly reflected in the construction and installation of photoelectric equipment on the top of urban buildings. As more and more photoelectric fields are connected to the city, the impact of the random variation of photoelectric field output with light intensity on the power quality of the grid is becoming more and more obvious. In some urban development studies, some scholars have proposed to build energy stor...
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IPC IPC(8): G06Q10/06G06Q50/06H02J3/00
CPCG06Q10/06312G06Q50/06H02J3/00H02J2203/20Y02E40/70Y04S10/50
Inventor 郁家麟方景辉唐锦江施海峰冯振宇张平陈其顾华东吴芳琳邬成锋张一鸣沈朗
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO