A method and system for evaluating output characteristics of mountainous photovoltaic power plants based on guarantee rate

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

Active Publication Date: 2021-08-06
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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  • A method and system for evaluating output characteristics of mountainous photovoltaic power plants based on guarantee rate
  • A method and system for evaluating output characteristics of mountainous photovoltaic power plants based on guarantee rate
  • A method and system for evaluating output characteristics of mountainous photovoltaic power plants 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 can 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 module 200 is co...

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Abstract

The invention discloses a method and system for evaluating the output characteristics of a mountainous photovoltaic power station based on a guarantee rate, which collects the historical active power output time series data sequence of a mountainous photovoltaic power station within a research period, and constructs a data sample; performs data inspection, correction and standardization on the data sample. Unitized processing to obtain a unit-free data sample, which is defined as a tagged value sequence; use the photovoltaic output period to group the tagged value sequence accordingly, and arrange the grouped tagged values ​​in descending order according to the number of tags in each group from large to small; Use the marked values ​​arranged in descending order to calculate the active output and guarantee rate of the mountain photovoltaic power station in each period of the photovoltaic output period, and use the output guarantee rate curve to represent the active output; use the guarantee rate curve to analyze different periods in power peak regulation and grid planning , The reference value of the active output of mountainous photovoltaic power plants under different guarantee rate requirements. The method of the invention is of great significance for the prediction of the active output of the mountainous 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 & AuthorityPatents(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