CN202817905U - Electric energy quality on-line analysis monitoring apparatus for photovoltaic power generation system - Google Patents
Electric energy quality on-line analysis monitoring apparatus for photovoltaic power generation system Download PDFInfo
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- CN202817905U CN202817905U CN2012205142626U CN201220514262U CN202817905U CN 202817905 U CN202817905 U CN 202817905U CN 2012205142626 U CN2012205142626 U CN 2012205142626U CN 201220514262 U CN201220514262 U CN 201220514262U CN 202817905 U CN202817905 U CN 202817905U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Photovoltaic Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses an electric energy quality on-line analysis monitoring apparatus for a photovoltaic power generation system, which can perform long-time and continuous monitoring on the electric energy quality of a photovoltaic power station according to the characteristics of the electric energy quality of the photovoltaic power station. The electric energy quality on-line analysis monitoring apparatus comprises a data collection module, a data transmission module and a monitoring host, wherein the monitoring host comprises a data analysis module and a monitoring module, the data collection module comprises a voltage transformer, a current transformer and a data collection card, the data transmission module is flexible in transmission mode, and can employ an Ethernet or an RS485 for transmission, the data analysis module and the monitoring module are integrated into a monitor, and the data analysis module calculates and obtains various parameters of the electric energy quality of the photovoltaic power station, and various parameters are displayed on the monitoring module. The electric energy quality on-line analysis monitoring apparatus for a photovoltaic power generation system is simple in structure and strong in practicality and can be widely applied to the places for analyzing and monitoring the electric energy quality of the photovoltaic power station.
Description
Technical field
The utility model relates to a kind of photovoltaic generating system quality of power supply on-line analysis supervising device, belongs to photovoltaic plant power system monitoring field.
Background technology
In recent years solar energy conduct has the regenerative resource of potentiality to be exploited to be developed rapidly most, and obtains the great attention of countries in the world, and wherein photovoltaic generation is the most important form that present solar energy utilizes.Photovoltaic plant mainly is comprised of photovoltaic battery array, inverter, step-up transformer and grid integration, control protection and electric power meter etc.; wherein photovoltaic battery array changes luminous energy into electric energy and exports with direct current; inverter is converted to alternating current output with the direct current of input, accesses electrical network behind the low-voltage alternating-current electric boost of step-up transformer with inverter output.The generated output of photovoltaic plant depends on light radiation amount and battery component temperature, generated output presents intermittence and uncertainty, unexpected variation when solar radiation, can cause generated output to fluctuate widely, this is equivalent to impact load to electrical network, so that cause voltage ripple of power network and flickering; In addition, a large amount of combining inverters that use of photovoltaic plant extensively adopt pulse width modulation (PWM) technology that direct current is converted to alternating current, can produce each harmonic content in the transfer process, also can affect the quality of power supply of power supply.
The quality of power supply is used for characterizing the good and bad degree of electric energy quality, comprises quality of voltage and frequency quality two parts.Wherein, quality of voltage is divided into again amplitude and waveform quality two aspects, and usually with voltage deviation, voltage fluctuation and flicker, the indexs such as imbalance of three-phase voltage degree are weighed voltage magnitude, weigh waveform quality with voltage sinusoidal wave distortion rate.Frequency quality is then weighed with frequency departure.The quality of voltage problem can be divided into again stable state and transient state two classes: the stable state disturbance comprises voltage deviation, three-phase imbalance, flickering and harmonic problem; The transient state disturbance comprises temporary overvoltage, voltage collapse, voltage swells and the instantaneous disruption of powering.According to the characteristics of photovoltaic plant and photovoltaic electric station grid connection operation, the power quality problem of photovoltaic plant mainly is voltage deviation, frequency departure, harmonic wave, flickering and tri-phase unbalance factor.
Electric energy quality monitoring is the prerequisite of improving power quality problem, photovoltaic generating system quality of power supply on-line analysis supervising device can provide detailed and reliable power quality data, and can find at any time quality of power supply interference incident, for the photovoltaic generating system safe operation is offered help.Photovoltaic generating system quality of power supply on-line analysis supervising device is a kind of multi-functional devices such as data acquisition, transfer of data, data analysis and condition monitoring that integrate, can carry out on-line analysis to the power quality index of photovoltaic plant output power, the performance of assessment photovoltaic plant helps to analyze the various approach that improve the quality of power supply; Power quality data according to history is analyzed, and the power quality problem that may occur current photovoltaic generating system carries out early warning.
Summary of the invention
The purpose of this utility model provides the photovoltaic generating system quality of power supply on-line analysis supervising device that a kind of cost is lower, communication mode is flexible, convenient and practical, realizes on-line analysis and the monitoring of the quality of power supply of photovoltaic plant.
For achieving the above object, the utility model provides a kind of photovoltaic generating system quality of power supply on-line analysis supervising device, it is characterized in that: comprise data acquisition module, data transmission module and monitoring host computer, described monitoring host computer comprises data analysis module and monitoring module, described data acquisition module is crossed data transmission module with the data communication device that collects and is delivered to monitoring host computer, is presented on the monitoring module of monitoring host computer through behind the data analysis module of monitoring host computer.
As a kind of improvement, described data acquisition module comprises voltage transformer, current transformer and data collecting card, and described voltage transformer summation current transformer is delivered to data collecting card with the data that collect.
As a kind of improvement, described data transmission module is with Ethernet transmission or RS485 transmission.
The utility model can easily be monitored every power quality index of photovoltaic plant, and this device operating efficiency that improved simple to operate, easy to use, obvious provides guarantee to the normal operation of photovoltaic plant.
Description of drawings
Accompanying drawing 1 is the structured flowchart of the utility model photovoltaic generating system quality of power supply on-line analysis supervising device.
Embodiment
A kind of embodiment of photovoltaic generating system quality of power supply on-line analysis supervising device, as shown in Figure 1, comprise data acquisition module 1, data transmission module 2 and monitoring host computer 3, described monitoring host computer comprises data analysis module 31 and monitoring module 32, described data acquisition module 31 is crossed data transmission module 2 with the data communication device that collects and is delivered to monitoring host computer 3, is presented on the monitoring module 32 of monitoring host computer through behind the data analysis module 31 of monitoring host computer 3.
As a kind of improved embodiment, described data acquisition module 31 comprises voltage transformer, current transformer and data collecting card, and described voltage transformer summation current transformer is delivered to data collecting card with the data that collect.Data acquisition module 1 need to obtain the voltage and current data from the also site of photovoltaic plant, can by after the conversion of voltage transformer summation current transformer, be gathered by the voltage, the current data capture card that are fit to electrical network (high pressure or low pressure).
As a kind of improved embodiment, described data transmission module 31 is with Ethernet transmission or RS485 transmission.Data transmission module can be selected different transmission meanss according to the demand of photovoltaic plant, comprises Ethernet transmission means and RS485 transmission means, and wherein the Ethernet transmission can be divided into again cable network transmission and wireless network transmissions dual mode.
The course of work: the voltage of photovoltaic plant, electric current convert the acceptable signal of data collecting card to through overvoltage sensor and current sensor respectively, pass through again phase compensation, after adjusting the phase error of each phase of three-phase electricity, enter data collecting card, the signal that data collecting card is crossed by certain sample frequency Collect conversion, and sampled data is transferred on the monitoring equipment.Data analysis module 31 and monitoring module 32 are set on the monitoring equipment, obtain the indices of the quality of power supply by the processing to data, and on the monitoring module 32 that shows.
Claims (3)
1. photovoltaic generating system quality of power supply on-line analysis supervising device, it is characterized in that: comprise data acquisition module (1), data transmission module (2) and monitoring host computer (3), described monitoring host computer (3) comprises data analysis module (31) and monitoring module (32), described data acquisition module (1) is crossed data transmission module (2) with the data communication device that collects and is delivered to monitoring host computer (3), is presented on the monitoring module (32) of monitoring host computer (3) behind the data analysis module (31) through monitoring host computer (3).
2. photovoltaic generating system quality of power supply on-line analysis supervising device according to claim 1, it is characterized in that: described data acquisition module (1) comprises voltage transformer, current transformer and data collecting card, and described voltage transformer summation current transformer is delivered to data collecting card with the data that collect.
3. photovoltaic generating system quality of power supply on-line analysis supervising device according to claim 1 is characterized in that: described data transmission module (31) is with Ethernet transmission or RS485 transmission.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205142626U CN202817905U (en) | 2012-10-09 | 2012-10-09 | Electric energy quality on-line analysis monitoring apparatus for photovoltaic power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012205142626U CN202817905U (en) | 2012-10-09 | 2012-10-09 | Electric energy quality on-line analysis monitoring apparatus for photovoltaic power generation system |
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| CN202817905U true CN202817905U (en) | 2013-03-20 |
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| CN2012205142626U Expired - Fee Related CN202817905U (en) | 2012-10-09 | 2012-10-09 | Electric energy quality on-line analysis monitoring apparatus for photovoltaic power generation system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837764A (en) * | 2013-03-27 | 2014-06-04 | 江苏理工学院 | Electric energy quality evaluation system and method for household solar photovoltaic power generation |
| CN105914791A (en) * | 2016-06-08 | 2016-08-31 | 甘肃上航电力运维有限公司 | Photovoltaic power station energy saving control system |
| CN112630558A (en) * | 2020-11-25 | 2021-04-09 | 广东电网有限责任公司电力科学研究院 | Park electric energy quality analysis system and control method |
| CN113725893A (en) * | 2021-08-02 | 2021-11-30 | 华能陕西定边电力有限公司 | Wind-powered electricity generation field power quality monitoring devices with multiple wireless communication mode |
-
2012
- 2012-10-09 CN CN2012205142626U patent/CN202817905U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837764A (en) * | 2013-03-27 | 2014-06-04 | 江苏理工学院 | Electric energy quality evaluation system and method for household solar photovoltaic power generation |
| CN103837764B (en) * | 2013-03-27 | 2016-11-02 | 江苏理工学院 | Electric energy quality detection method for household solar photovoltaic power generation |
| CN105914791A (en) * | 2016-06-08 | 2016-08-31 | 甘肃上航电力运维有限公司 | Photovoltaic power station energy saving control system |
| CN105914791B (en) * | 2016-06-08 | 2018-11-13 | 甘肃上航电力运维有限公司 | Photovoltaic plant energy-saving control system |
| CN112630558A (en) * | 2020-11-25 | 2021-04-09 | 广东电网有限责任公司电力科学研究院 | Park electric energy quality analysis system and control method |
| CN113725893A (en) * | 2021-08-02 | 2021-11-30 | 华能陕西定边电力有限公司 | Wind-powered electricity generation field power quality monitoring devices with multiple wireless communication mode |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20171009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |