Mountainous region photovoltaic power station output characteristic evaluation method and system based on guarantee rate

A photovoltaic power station and output characteristic technology, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve problems such as increased risk

Active Publication Date: 2020-08-11
GUIZHOU POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Mountain photovoltaic power stations are different from plain area photovoltaic power stations. Their active output is affected by many factors such as installation location, mountain terrain, light intensity and angle, and the randomness of photovoltaic output. Operation brings great risks and challenges
And with the continuous increase of photovoltaic installed capacity and grid connection, the risk will further increase

Method used

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  • Mountainous region photovoltaic power station output characteristic evaluation method and system based on guarantee rate
  • Mountainous region photovoltaic power station output characteristic evaluation method and system based on guarantee rate
  • Mountainous region photovoltaic power station output characteristic evaluation method and system based on guarantee rate

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Embodiment 1

[0036] refer to Figure 1 to Figure 5 , which is the first embodiment of the present invention, this embodiment provides a method for evaluating the output characteristics of mountainous photovoltaic power plants based on the guarantee rate, including:

[0037] S1: Collect the time-series data series of historical active power output of mountainous photovoltaic power plants within the research period, and construct data samples. What needs to be explained is:

[0038] Collect the active power output data of mountain photovoltaic power plants for one year, and the sampling step (using the minimum time interval of data points) is 30 minutes;

[0039] Using the data collected in 365 days * 24 hours * 2 to calculate and obtain the time series data sequence of the annual active output of the mountain photovoltaic power station;

[0040] The labeling process was carried out separately, and 17520 data samples were constructed.

[0041] S2: Carry out data inspection, correction and...

Embodiment 2

[0077] refer to Figure 6 , is the second embodiment of the present invention. This embodiment is different from the first embodiment in that it provides a system for evaluating the output characteristics of mountain photovoltaic power plants based on the guarantee rate, including:

[0078] The sampling module 100 is used to collect the historical active output time-series data of mountainous photovoltaic power plants, and construct data samples; it is based on the communication module of the remote data acquisition platform, and integrates the communication chip and the storage chip on a circuit board, so that it has the ability to pass remote data. The data transmission function of the acquisition platform, for example, computers, single-chip microcomputers, and ARMs can be connected to the remote data acquisition platform through the RS232 serial port, and various voice and data communication functions can be realized through the AT command control module.

[0079] Checking m...

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Abstract

The invention discloses a mountainous region photovoltaic power station output characteristic evaluation method and system based on a guarantee rate, and the method comprises the steps: collecting a historical active output time sequence data sequence of a mountainous region photovoltaic power station in a research period, and constructing a data sample; performing data inspection, correction andper-unit processing on the data sample to obtain a data sample without unit dimension, and defining the data sample as a mark numerical value sequence; correspondingly grouping the mark numerical value sequences by utilizing the photovoltaic output time period, and arranging the grouped mark numerical values in a descending order according to the descending order of each group of mark numerical values; respectively calculating the active power output and guarantee rate of the mountain photovoltaic power station in each time period in the photovoltaic power output time period by utilizing the mark values after descending sort, and representing the active power output by using an output guarantee rate curve; and analyzing the active power output reference value of the mountain photovoltaic power station in different time periods and under different guarantee rate requirements in power peak regulation and power grid planning by utilizing the guarantee rate curve. The method is of great significance to active power output prediction of the mountain photovoltaic power station.

Description

technical field [0001] The invention relates to the technical fields of research on output characteristics, calculation of power system peak regulation, and dispatching operation, and in particular relates to a method and system for evaluating the output characteristics of mountainous photovoltaic power stations based on guaranteed rates. Background technique [0002] Mountain photovoltaic power stations are different from plain area photovoltaic power stations. Their active output is affected by many factors such as installation location, mountain terrain, light intensity and angle, and the randomness of photovoltaic output. Operation brings huge risks and challenges. And with the continuous increase of photovoltaic installed capacity and grid connection, the risk will further increase. Better grasp the active output characteristics of mountain photovoltaic power plants, evaluate their active output characteristics, and calculate the credible active output of mountain phot...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02J3/38H02J3/48
CPCH02J3/381H02J3/48H02J2203/20H02J2300/24Y02E10/56
Inventor刘文霞蒋泽甫何向刚钟以林胡江罗文雲邓朴龙蔷唐学用张彦张裕
OwnerGUIZHOU POWER GRID CO LTD