Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Reliability assessment method of large-scale grid-connected photovoltaic power station

A photovoltaic power station, reliability technology, applied in the direction of instruments, data processing applications, resources, etc., can solve the problems that the evaluation indicators of photovoltaic power stations have not been clearly raised

Inactive Publication Date: 2016-01-13
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many domestic studies on the power generation reliability of power systems containing photovoltaic power plants from the perspective of load, and a relatively comprehensive evaluation index system has also been established. However, evaluation indicators from the perspective of the reliability of photovoltaic power plants themselves have not been clearly proposed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reliability assessment method of large-scale grid-connected photovoltaic power station
  • Reliability assessment method of large-scale grid-connected photovoltaic power station
  • Reliability assessment method of large-scale grid-connected photovoltaic power station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A method for evaluating the reliability of a large-scale grid-connected photovoltaic power station, comprising the following steps:

[0056] Step 1: Divide the state of the photovoltaic power station: divide the state of the photovoltaic power station into the first to mth states, where m is the number of states of the photovoltaic power station.

[0057] Step 2: Extract evaluation data: the evaluation data includes: the i-th sampling output power F of the photovoltaic power plant at time t OP [x i (t)],

[0058] Step 3: Calculate the reliability index: the reliability index includes: the expected E of the output power at time t OP , Variance V of output power at time t OP , Coefficient of variation β of output power at time t, probability of insufficient output power POPS, frequency of insufficient output power FOPS, expected EOPS of insufficient output power, and duration of insufficient output power DOPS.

[0059] The evaluation data is taken from the simulation ...

Embodiment 2

[0080] The difference from Embodiment 1 is that the evaluation data is taken from the real-time operation data of the photovoltaic power station, and the state of the photovoltaic power station is a different operating state defined for the photovoltaic power station before the evaluation;

[0081] The desired output power E OP The calculation method is:

[0082] E O P ( t ) = 1 N Σ i = 1 N F O P [ x i ( t ) ] - - - ( 8 )

[0083] Among them, t is the evaluation time, x i (t) is the sta...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a reliability assessment method of a large-scale grid-connected photovoltaic power station. The method comprises a photovoltaic power station state division step, an assessment data extraction step and a reliability index calculation step. Reliability indexes comprise an expectation of output power (EOP) at a time t, a variance of output power (VOP) at the time t, a variation coefficient [beta] of output power at the time t, a probability of an output power shortage (POPS), a frequency of the output power shortage (FOPS), an expectation of the output power shortage (EOPS) and duration of the output power shortage (DOPS). If reliability of an existing photovoltaic power station is assessed, calculation data is extracted from real-time operation data. If reliability of a photovoltaic power station constructed in a plan is assessed, calculation data is extracted from photovoltaic power station operation state simulation data. The reliability of the photovoltaic power station is assessed from the point of view of the photovoltaic power station reliability, and the method plays an important guiding role in making of a reliability assessment and maintenance plan of the existing photovoltaic power station and design and construction of the future photovoltaic power station.

Description

technical field [0001] The invention relates to a method for evaluating the reliability of a photovoltaic power station, in particular to a method for evaluating the reliability of a large-scale grid-connected photovoltaic station, which belongs to the technical field of photovoltaic power generation. Background technique [0002] In recent years, solar photovoltaic power generation technology has continued to develop rapidly, and the installed capacity of grid-connected photovoltaic power generation has grown rapidly. In 2013, for the first time, the newly added capacity of solar photovoltaic in the world exceeded the newly added capacity of wind power. It is estimated that by 2020, the cumulative installed capacity of photovoltaic power generation in my country will exceed 20GW. However, due to the many types of photovoltaic project structures in China and the long-term rush to install them, the reliability level varies, and the failure and low efficiency of photovoltaic p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06Q10/06G06Q50/06
Inventor 朱晓荣王羽凝黄晶生
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com