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Method and system for evaluating stability of photovoltaic power station system

A system stability and photovoltaic power station technology, applied in the field of photovoltaic power generation evaluation, can solve the problems of no photovoltaic power station stability and practical test evaluation

Active Publication Date: 2017-11-14
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, for photovoltaic power plants, the host computer monitoring system is only for data collection and fault monitoring, without testing and evaluating the stability and practicability of photovoltaic power plants

Method used

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  • Method and system for evaluating stability of photovoltaic power station system
  • Method and system for evaluating stability of photovoltaic power station system
  • Method and system for evaluating stability of photovoltaic power station system

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Embodiment 1

[0056] An embodiment of the present invention provides a photovoltaic power station system stability evaluation system, such as figure 1 shown. The system includes a cloud monitoring platform big data processor, a data collector, an outdoor test device, an intelligent combiner box and an environment collector.

[0057] The photovoltaic power station includes one or more photovoltaic inverter systems, and the photovoltaic inverter system includes photovoltaic modules and photovoltaic inverters.

[0058] The photovoltaic inverter system is composed of photovoltaic modules and photovoltaic inverters. N photovoltaic inverter systems form a photovoltaic power station. The photovoltaic power station is generally of megawatt level, ten megawatt level and hundred megawatt level.

[0059] The photovoltaic power station of this embodiment adopts a distributed photovoltaic inverter, figure 1 In the process, each photovoltaic module is connected to the smart combiner box through sensors...

Embodiment 2

[0105]Based on the same inventive idea, the embodiment of the present invention also provides a method for evaluating the stability of a photovoltaic power station system. The technical means adopted to solve the technical problems are similar to the principle of a photovoltaic power station system stability evaluation system, and the repetitions are no longer repeat.

[0106] The method for evaluating the stability of the photovoltaic power plant system may include the following steps:

[0107] The smart combiner box collects the voltage and current of photovoltaic modules and uploads them to the cloud monitoring platform processor through the data collector;

[0108] The outdoor test equipment installed on the input and output sides of each photovoltaic inverter system uploads the voltage and current data of the photovoltaic inverter system to the processor of the cloud monitoring platform;

[0109] The photovoltaic inverter uploads the operating data and operating status t...

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Abstract

The invention provides a method and system for evaluating the stability of a photovoltaic power station system. The system comprises a cloud monitoring platform large data processor, a data collector, an outdoor test device, an intelligent combiner box and an environment collector. Different inverters uploads operation data, operation status, temperature, humidity and light intensity to the cloud monitoring platform large data processor through the data collector, wherein the temperature, humidity and light intensity are collected by the environment collector. The cloud monitoring platform large data processor calculates the generating capacity and operation data of a power station in real time, so as to compare the generating capacity differences of inverters of different manufacturers. The system uses the difference control algorithm of photovoltaic power station inverters of different manufacturers, a photovoltaic module health analysis algorithm and a fast photovoltaic power station failure rate detection and control algorithm to carry out evaluating, which provides a favorable reference for the effective management and predictive control of the photovoltaic power station.

Description

technical field [0001] The invention relates to a method and system for evaluating the stability of a photovoltaic power station system, belonging to the technical field of photovoltaic power generation evaluation. Background technique [0002] The publication number CN105260952 discloses a method for evaluating the reliability of a photovoltaic power station based on the Markov chain Monte Carlo method, which is used for a centralized photovoltaic power station composed of N power generation units, and each power generation unit includes the following four components: photovoltaic Arrays, DC combiner boxes, photovoltaic inverters, and transformers are finally connected to the AC grid; including the following steps: establishing a Markov chain model for each component, sampling the state, simulating the operation process, and judging the convergence of the algorithm. [0003] The publication number CN102496954 discloses a method for judging the stability of a grid-connected ...

Claims

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Application Information

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IPC IPC(8): H02J3/38G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06H02J3/383Y02E10/56Y02P80/20
Inventor 范瑞祥徐宁王文彬李琼蒙天骐
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST