CN104574222A - Method for storing distributed photovoltaic power station operation data - Google Patents

Method for storing distributed photovoltaic power station operation data Download PDF

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Publication number
CN104574222A
CN104574222A CN201510050882.7A CN201510050882A CN104574222A CN 104574222 A CN104574222 A CN 104574222A CN 201510050882 A CN201510050882 A CN 201510050882A CN 104574222 A CN104574222 A CN 104574222A
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Prior art keywords
power station
photovoltaic power
distributed photovoltaic
distributed
data
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CN201510050882.7A
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Chinese (zh)
Inventor
高云峰
潘霄峰
刘纯
董存
刘德伟
黄越辉
王跃峰
张楠
礼晓飞
王晶
戴松霖
王江元
许晓艳
马烁
李鹏
李丽
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Beijing Electric Power Co Ltd
CLP Puri Zhangbei Wind Power Research and Test Ltd
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Beijing Electric Power Co Ltd
CLP Puri Zhangbei Wind Power Research and Test Ltd
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Application filed by State Grid Corp of China SGCC, China Electric Power Research Institute Co Ltd CEPRI, State Grid Beijing Electric Power Co Ltd, CLP Puri Zhangbei Wind Power Research and Test Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510050882.7A priority Critical patent/CN104574222A/en
Publication of CN104574222A publication Critical patent/CN104574222A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06Energy or water supply
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/22Indexing; Data structures therefor; Storage structures

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  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Economics (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Resources & Organizations (AREA)
  • Marketing (AREA)
  • Primary Health Care (AREA)
  • Strategic Management (AREA)
  • Tourism & Hospitality (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention relates to a method for storing distributed photovoltaic power station operation data. The method includes: acquiring the sunshine duration of a region where a distributed photovoltaic power station is located in the current season; determining the working time of the distributed photovoltaic power station; determining time sequence data generated by the operation of the distributed photovoltaic power station and the type of the time sequence data; storing the working time data of the distributed photovoltaic power station. The method has the advantages that the feature that the photovoltaic power station does not work at night is utilized, the night idle time period of the photovoltaic power station is neglected during photovoltaic power station data storage, so that storage space is saved greatly, and search speed of the stored data is increased favorably.

Description

A kind of method of distributed storage photovoltaic plant service data
Technical field
The present invention relates to a kind of method of field of new energy generation, specifically relate to a kind of method of distributed storage photovoltaic plant service data.
Background technology
Distributed photovoltaic power generation refers in particular to be built near user place, and the method for operation is generated power for their own use with user side, unnecessary electricity online, and with the photovoltaic generation facility that distribution system balance adjustment is feature.
Distributed photovoltaic power generation follow suit measures to local conditions, clean and effective, scattered distribution, the principle that utilizes nearby, make full use of local solar energy resources, substitute and reduce fossil energy consumption.
Distributed photovoltaic power generation refers in particular to employing photovoltaic module, sun power is directly converted to the distributed generation system of electric energy.It is a kind of novel, tool generating with broad prospects for development and comprehensive utilization of energy mode, it is advocated and generates electricity nearby, grid-connected nearby, change nearby, the principle used nearby, effectively can not only improve the generated energy of same size photovoltaic plant, also efficiently solve the loss problem of electric power in boosting and long-distance transport simultaneously.
The distributed photovoltaic power generation system be most widely used at present is the photovoltaic generation project building City Building roof in.This intermediate item must access public electric wire net, is neighbouring customer power supply together with public electric wire net.
Distributed photovoltaic power generation has following characteristics:
One is that output power is relatively little.Generally speaking, the capacity of a distributed photovoltaic power generation project is within thousands of watts.Different from centralized power station, the size of photovoltaic plant is very little on the impact of generating efficiency, therefore also very little on the impact of its economy, and the rate of return on investment of low profile photovoltaic system can't be lower than large-scale.
Two is that pollution is little, and environmental benefit is given prominence to.Distributed photovoltaic power generation project, in power generation process, does not have noise, can not produce air and water yet and pollute.
Three is to alleviate local shortage of electric power situation to a certain extent.But the energy density of distributed photovoltaic power generation is relatively low, the power of every square metre of distributed photovoltaic power generation system only about 100 watts, adds the building roof limited area of applicable installation photovoltaic component, can not fundamentally solve shortage of electric power problem.
Four is the electricity consumptions depositing of can generating electricity.The generating of large-scale ground power station is boosting access power transmission network, only runs as generating power station; And distributed photovoltaic power generation is access power distribution network, generating electricity consumption is also deposited, and requires on-site elimination as much as possible.
Distributed photovoltaic power generation system, also known as distributing generating or distributed energy supply, refer in the less photovoltaic generation electric power system of the on-the-spot or close electricity consumption situ configuration of user, to meet the demand of specific user, support the economical operation of existing power distribution network, or meet the requirement of these two aspects simultaneously.
The basic equipment of distributed photovoltaic power generation system comprises the equipment such as photovoltaic cell component, photovoltaic arrays support, direct current conflux case, DC power distribution cabinet, combining inverter, AC power distribution cabinet/AC distribution panel, also has electric power system supervising device and environment monitoring device in addition.Its operational mode is under the condition having solar radiation, the solar cell module array of photovoltaic generating system is by the electric energy of sun power conversion output, concentrate through direct current conflux case and send into DC power distribution cabinet, be reverse into alternating current by combining inverter and supply building own load, unnecessary or not enough electric power regulates by connecting electrical network.
Along with the appearance of encouraging distributed photovoltaic development policies, a large amount of accesses in distributed photovoltaic power station, create considerable influence to the power balance of electric system.For ensureing system cloud gray model safety, must monitor the practical operation situation in distributed photovoltaic power station.But due to distributed photovoltaic power station One's name is legion, the data volume that need store is huge, for saving storage space, must improve the service data storage means in distributed photovoltaic power station.
Summary of the invention
For solving above-mentioned deficiency of the prior art, the object of this invention is to provide a kind of method of distributed storage photovoltaic plant service data, utilize photovoltaic plant idle feature at night, when storing photovoltaic plant data, ignore the not working hour of photovoltaic plant at night, thus greatly save storage space, be also conducive to improving the seek rate to storing data simultaneously.There is a basic understanding some aspects in order to the embodiment to disclosure, shown below is simple summary.This summarized section is not extensive overview, neither determine key/critical component or describe the protection domain of these embodiments.Its sole purpose presents some concepts by simple form, in this, as the preamble of following detailed description.
The object of the invention is to adopt following technical proposals to realize:
The invention provides a kind of method of distributed storage photovoltaic plant service data, its improvements are, described method comprises the steps:
(1) sunshine-duration of location, distributed photovoltaic power station current season is obtained;
(2) working time in distributed photovoltaic power station is determined;
(3) obtain distributed photovoltaic power station and run the time series data and type that produce;
(4) distributed storage photovoltaic plant operating time data.
Further, described step (1) comprising: the sunshine-duration distributed data obtaining longitude and latitude area from existing meteorogical phenomena database; According to place, distributed photovoltaic power station longitude and latitude, find the distributed photovoltaic power station location sunshine-duration to distribute, obtain the sunshine-duration of current season.
Further, described step (2) comprising: intensity of sunshine affects the working time in distributed photovoltaic power station, then photovoltaic panel power=transformation ratio * intensity of sunshine, it is the start time that photovoltaic panel has output power that sunshine-duration starts Trs, end time at sunshine Tre is that photovoltaic panel stops exerting oneself the time, distributed photovoltaic power station working time t=Tre-Trs.
Further, in described step (3), from equipment or the monitor supervision platform in distributed photovoltaic power station, with 104, modbus Real Time Communication obtains distributed photovoltaic power station and runs the time series data and type that produce; Described time series data type comprises: remote measurement and the remote signalling data such as inverter power, invertor operation state, distributed photovoltaic power station active power, reactive power.
Further, in described step (4), each remote measurement, remote signalling data store by all the period of time by conventional store mode, if meritorious power storage is P (Date, 0,0 ... 0, Pts ... Pte, 0 ... 0,0), according to the working time obtained in step (2), for distributed photovoltaic power station time series data adds to have period mark, data are expressed as P (Date, Trs, Tre, t, Pts,, Pte), be that unit is stored in database according to day.
Compared with immediate prior art, the excellent effect that technical scheme provided by the invention has is:
The method of a kind of distributed storage photovoltaic plant service data provided by the invention.Utilize distributed photovoltaic power station idle feature at night.On the data store, the photovoltaic plant working time is determined according to place longitude and latitude and season, take only to the photovoltaic plant working time and have and periodly carry out data storage, such as, whether there is value not distinguish to data in the past, store whole day twenty four hours data, but each department valid data have been only the sunshine-duration, the invalid data of such every day will take large quantity space, therefore namely the method can ensure the storage of effect data, also can reduce the storage of extraneous data in a large number, improve disk space utilization factor.In reading and writing data, because invalid data amount reduces in a large number, therefore to when inquiring about sometime, inquiry velocity also will improve in a large number.
In order to above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more embodiment comprises.Explanation below and accompanying drawing describe some illustrative aspects in detail, and its instruction is only some modes in the utilizable various mode of principle of each embodiment.Other benefit and novel features become obvious by considering by reference to the accompanying drawings along with detailed description below, and the disclosed embodiments will comprise all these aspects and theirs is equivalent.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the outline flowchart of the method for distributed storage photovoltaic plant service data in the embodiment of the present invention;
Fig. 2 is the technology introduction figure of the method for distributed storage photovoltaic plant service data in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The following description and drawings illustrate specific embodiment of the invention scheme fully, to enable those skilled in the art to put into practice them.Other embodiments can comprise structure, logic, electric, process and other change.Embodiment only represents possible change.Unless explicitly requested, otherwise independent assembly and function are optional, and the order of operation can change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The scope of embodiment of the present invention comprises the gamut of claims, and all obtainable equivalent of claims.In this article, these embodiments of the present invention can be represented with term " invention " individually or always, this is only used to conveniently, and if in fact disclose the invention more than, be not the scope that automatically will limit this application is any single invention or inventive concept.
As illustrated in fig. 1 and 2, be outline flowchart and the technology introduction figure of the method for distributed storage photovoltaic plant service data in the embodiment of the present invention respectively, the invention provides a kind of method of distributed storage photovoltaic plant service data, comprise the steps:
1, from existing meteorogical phenomena database, obtain the sunshine-duration distributed data in each longitude and latitude area;
2, according to photovoltaic plant place longitude and latitude, find the photovoltaic plant location sunshine-duration to distribute, obtain the sunshine-duration of current season; Because the factors such as intensity of sunshine, temperature, cloud amount directly can affect the electricity conversion of photovoltaic panel, wherein intensity of sunshine has the greatest impact, what can be similar to is expressed as photovoltaic panel power=transformation ratio * intensity of sunshine, therefore the sunshine-duration starts (Trs) for photovoltaic panel start time of output power, end time at sunshine (Tre) for photovoltaic panel stop exert oneself the time, distributed photovoltaic power station working time t=Tre-Trs.
3, the working time of this photovoltaic plant is determined according to the sunshine-duration obtained;
4, obtain photovoltaic plant from equipment or monitor supervision platform and run the time series data and type that produce;
From equipment or the monitor supervision platform in distributed photovoltaic power station, with 104, modbus Real Time Communication obtains distributed photovoltaic power station and runs the time series data and type that produce; Described time series data type comprises: remote measurement and the remote signalling data such as inverter power, invertor operation state, distributed photovoltaic power station active power, reactive power.
5, photovoltaic plant time series data being added to have period mark, is that unit is stored in database according to day.
Each remote measurement, remote signalling data store by all the period of time by conventional store mode, if meritorious power storage is P (Date, 0,0 ... 0, Pts ... Pte, 0 ... 0,0), according to the working time obtained in step (2), for distributed photovoltaic power station time series data adds to have period mark, data are expressed as P (Date, Trs, Tre, t, Pts,, Pte), be that unit is stored in database according to day.
The present invention utilizes photovoltaic plant idle feature at night, when design data storage organization, ignores the not working hour of photovoltaic plant at night, thus greatly saves storage space, is also conducive to improving the seek rate to storing data simultaneously.
Should be understood that the particular order of the step in disclosed process or level are the examples of illustrative methods.Based on design preference, should be appreciated that, the particular order of the step in process or level can be rearranged when not departing from protection domain of the present disclosure.Appended claim to a method gives the key element of various step with exemplary order, and is not to be limited to described particular order or level.
In above-mentioned detailed description, various feature is combined in single embodiment together, to simplify the disclosure.This open method should be interpreted as reflecting such intention, that is, the embodiment of theme required for protection needs the more feature of feature clearly stated in each claim.On the contrary, as appending claims reflect, the present invention is in the state fewer than whole features of disclosed single embodiment.Therefore, appending claims is clearly merged in detailed description hereby, and wherein every claim is alone as the preferred embodiment that the present invention is independent.
Description above comprises the citing of one or more embodiment.Certainly, all possible combination describing parts or method in order to describe above-described embodiment is impossible, but those of ordinary skill in the art should be realized that, each embodiment can do further combinations and permutations.Therefore, embodiment described herein is intended to contain all such changes, modifications and variations fallen in the protection domain of appended claims.In addition, " comprise " with regard to the term used in instructions or claims, the mode that contains of this word is similar to term and " comprises ", just as " comprising, " be in the claims used as link word explain such.In addition, be used in any one term in the instructions of claims " or " be to represent " non-exclusionism or ".
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.

Claims (5)

1. a method for distributed storage photovoltaic plant service data, is characterized in that, described method comprises the steps:
(1) sunshine-duration of location, distributed photovoltaic power station current season is obtained;
(2) working time in distributed photovoltaic power station is determined;
(3) obtain distributed photovoltaic power station and run the time series data and type that produce;
(4) distributed storage photovoltaic plant operating time data.
2. the method for claim 1, is characterized in that, described step (1) comprising: the sunshine-duration distributed data obtaining longitude and latitude area from existing meteorogical phenomena database; According to place, distributed photovoltaic power station longitude and latitude, find the distributed photovoltaic power station location sunshine-duration to distribute, obtain the sunshine-duration of current season.
3. the method for claim 1, it is characterized in that, described step (2) comprising: intensity of sunshine affects the working time in distributed photovoltaic power station, then photovoltaic panel power=transformation ratio * intensity of sunshine, it is the start time that photovoltaic panel has output power that sunshine-duration starts Trs, end time at sunshine Tre is that photovoltaic panel stops exerting oneself the time, distributed photovoltaic power station working time t=Tre-Trs.
4. the method for claim 1, it is characterized in that, in described step (3), from equipment or the monitor supervision platform in distributed photovoltaic power station, with 104, modbus Real Time Communication obtains distributed photovoltaic power station and runs the time series data and type that produce; Described time series data type comprises: inverter power, invertor operation state, distributed photovoltaic power station active power and reactive power telemetry and remote signalling data.
5. the method for claim 1, is characterized in that, in described step (4), according to the working time obtained in step (2), for distributed photovoltaic power station time series data adds to have period mark, data are expressed as P (Date, Trs, Tre, t, Pts ... Pte), be that unit is stored in database according to day.
CN201510050882.7A 2015-01-30 2015-01-30 Method for storing distributed photovoltaic power station operation data Pending CN104574222A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1713592A (en) * 2004-06-27 2005-12-28 华为技术有限公司 Realization of universal data collection
US20070112876A1 (en) * 2005-11-07 2007-05-17 Blaisdell Russell C Method and apparatus for pruning data in a data warehouse
US20090271791A1 (en) * 2005-12-19 2009-10-29 Commvault Systems, Inc. System and method for performing time-flexible calendric storage operations
CN101894153A (en) * 2010-06-29 2010-11-24 武汉绿色网络信息服务有限责任公司 Annular storage list-based dynamic data compressing and storing method
CN102324180A (en) * 2011-08-24 2012-01-18 广州市特种机电设备检测研究院 Energy-conservation on-line data acquisition method of elevator long distance and device
CN103733195A (en) * 2011-07-08 2014-04-16 起元技术有限责任公司 Managing storage of data for range-based searching
CN103906210A (en) * 2014-04-09 2014-07-02 河海大学 Dormancy scheduling method for sensor network node of distribution type photovoltaic power generation device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1713592A (en) * 2004-06-27 2005-12-28 华为技术有限公司 Realization of universal data collection
US20070112876A1 (en) * 2005-11-07 2007-05-17 Blaisdell Russell C Method and apparatus for pruning data in a data warehouse
US20090271791A1 (en) * 2005-12-19 2009-10-29 Commvault Systems, Inc. System and method for performing time-flexible calendric storage operations
CN101894153A (en) * 2010-06-29 2010-11-24 武汉绿色网络信息服务有限责任公司 Annular storage list-based dynamic data compressing and storing method
CN103733195A (en) * 2011-07-08 2014-04-16 起元技术有限责任公司 Managing storage of data for range-based searching
CN102324180A (en) * 2011-08-24 2012-01-18 广州市特种机电设备检测研究院 Energy-conservation on-line data acquisition method of elevator long distance and device
CN103906210A (en) * 2014-04-09 2014-07-02 河海大学 Dormancy scheduling method for sensor network node of distribution type photovoltaic power generation device

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Application publication date: 20150429