CN110034583A - A kind of distributed photovoltaic island state multi-source monitoring system and monitoring method - Google Patents
A kind of distributed photovoltaic island state multi-source monitoring system and monitoring method Download PDFInfo
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- CN110034583A CN110034583A CN201910346448.1A CN201910346448A CN110034583A CN 110034583 A CN110034583 A CN 110034583A CN 201910346448 A CN201910346448 A CN 201910346448A CN 110034583 A CN110034583 A CN 110034583A
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- grid
- module
- distributed photovoltaic
- distribution box
- monitoring
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005070 sampling Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 15
- 238000004321 preservation Methods 0.000 claims description 13
- 230000004224 protection Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000009979 protective mechanism Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Classifications
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- H02J13/0017—
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- 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
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a kind of breakers, more particularly, to a kind of distributed photovoltaic island state multi-source monitoring system and monitoring method, the monitoring system includes grid-connected distribution box, grid-connected breaker, the main station system for being analyzed for monitoring grid-connected distribution box and acquisition data, the grid-connected distribution box, grid-connected breaker, main station system sequence are electrically connected, the monitoring system is externally connected with the distributed photovoltaic power supply system for powering to grid-connected distribution box, and the distributed photovoltaic power supply system is electrically connected with grid-connected distribution box.The present invention provides a kind of distributed photovoltaic island state multi-source monitoring system and monitoring method, pass through the setting of the grid-connected breaker for monitoring grid-connected distribution box and acquisition data, grid-connected distribution box is monitored using grid-connected breaker and carries out data acquisition, it is then sent to main station system to be analyzed, to judge the island state of distributed photovoltaic.
Description
Technical field
The present invention relates to a kind of breaker, more particularly, to a kind of distributed photovoltaic island state multi-source monitoring system and
Monitoring method.
Background technique
With the fast development of user side distributed photovoltaic, distributed photovoltaic presentation is multi-point and wide-ranging, multi-voltage grade accesses,
The features such as high permeability, conventional electrical distribution net develop into active power distribution network, to the safe and economical operation and power quality of power grid
It causes and seriously affects.
For the power supply reliability and safety for improving the distribute-electricity transformer district after distributed photovoltaic access, need to distributed photovoltaic
Isolated island monitoring is carried out, and existing grid-connected breaker does not have telecommunications functions, can not be monitored to its current state；
After power distribution network has a power failure, distributed photovoltaic should be forbidden to continue to generate electricity, form isolated island, to guarantee the person peace of O&M service personnel
Entirely.
Summary of the invention
It is an object of the invention to overcome existing shortcoming and deficiency, a kind of distributed photovoltaic island state multi-source prison is provided
Examining system and monitoring method, by the setting of the grid-connected breaker for monitoring grid-connected distribution box and acquisition data, utilization is grid-connected
Breaker monitors grid-connected distribution box and carries out data acquisition, is then sent to main station system and is analyzed, to judge distribution
The island state of photovoltaic.
To achieve the goals above, the present invention realizes by the following technical solutions:
A kind of distributed photovoltaic island state multi-source monitoring system is provided, the monitoring system includes grid-connected distribution box, use
In the grid-connected breaker, the main station system for being analyzed that monitor grid-connected distribution box and acquisition data, the grid-connected distribution
Case, grid-connected breaker, main station system sequence are electrically connected, and the monitoring system is externally connected with point for powering to grid-connected distribution box
Cloth photovoltaic power supply system, the distributed photovoltaic power supply system are electrically connected with grid-connected distribution box.
The present invention provides a kind of distributed photovoltaic island state multi-source monitoring system and monitoring method, by for monitoring simultaneously
The setting of net distribution box and the grid-connected breaker of acquisition data monitors grid-connected distribution box using grid-connected breaker and carries out data and adopts
Collection, is then sent to main station system and is analyzed, to judge the island state of distributed photovoltaic.
Preferably, the grid-connected breaker include sampling module, remote communication module, coincidence and Preservation tactics module and
Control centre MCU, the sampling module, remote communication module, coincidence and Preservation tactics module are electrically connected with control centre MCU
It connects.
Preferably, the sampling module, remote communication module, coincidence and Preservation tactics module and control centre MCU are equal
It is integrated in grid-connected breaker.
Preferably, the grid-connected breaker is equipped with the division switch of the protection of the control and overcurrent that switch for realizing division
Operation mechanical structure, overload protecting mechanism, short current protective mechanism.
Preferably, the sampling module includes voltage acquisition module, current acquisition module, switch state acquisition module, remains
Aftercurrent acquisition module, the voltage acquisition module, current acquisition module, switch state acquisition module, residual current acquire mould
Block is electrically connected with control centre MCU.
The present invention also provides the monitoring method of the distributed photovoltaic island state multi-source monitoring system described in one kind, features
It is, the specific steps are as follows:
(1) firstly, by sampling module to grid-connected distribution box carry out voltage acquisition, current acquisition, switch state acquisition with
And residual current acquisition；
(2) secondly, being transmitted the data acquired in step by remote communication module；It is transmitted to coincidence and protection plan
Slightly module is to export coincidence and security strategy；
(3) finally, by the data information of remote communication module and coincidence and the output of Preservation tactics module to main station system,
Main station system acquires out grid-connected real time data and location status and comprehensive descision prompt photovoltaic island state.
Compared with the prior art, the invention has the following advantages and beneficial effects:
The present invention provides a kind of distributed photovoltaic island state multi-source monitoring system and monitoring method, by for monitoring simultaneously
The setting of net distribution box and the grid-connected breaker of acquisition data monitors grid-connected distribution box using grid-connected breaker and carries out data and adopts
Collection, is then sent to main station system and is analyzed, to judge the island state of distributed photovoltaic.
Detailed description of the invention
Fig. 1 is the schematic diagram that a kind of distributed photovoltaic island state multi-source of the present invention monitors system.
Fig. 2 is the functional block diagram of the grid-connected breaker of Fig. 1.
Fig. 3 is the functional block diagram of the sampling module of Fig. 2.
Fig. 4 is the monitoring flow chart that a kind of distributed photovoltaic island state multi-source monitors system.
Fig. 5 is the partial schematic diagram of Fig. 1.
Fig. 6 is isolated island decision logic table.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment one
If Fig. 1 to Fig. 6 is the first embodiment that a kind of distributed photovoltaic island state multi-source monitors system, system packet is monitored
Include grid-connected distribution box 1, grid-connected breaker 2, the main website for being analyzed for monitoring grid-connected distribution box 1 and acquisition data
System 3, grid-connected distribution box 1, grid-connected breaker 2, main station system 3 are sequentially electrically connected, the monitoring system be externally connected with for
The distributed photovoltaic power supply system that grid-connected distribution box 1 is powered, the distributed photovoltaic power supply system are electrically connected with grid-connected distribution box 1
It connects.
Wherein, grid-connected breaker 2 include sampling module 21, remote communication module 22, be overlapped and Preservation tactics module 23 with
And control centre MCU24, sampling module 21, remote communication module 22, be overlapped and Preservation tactics module 23 and control centre
MCU24 electrical connection.
In addition, sampling module 21, remote communication module 22, coincidence and Preservation tactics module 23 and control centre MCU24
It is integrated in grid-connected breaker 2.
Wherein, grid-connected breaker 2 is equipped with the behaviour of the division switch of the protection of the control and overcurrent that switch for realizing division
Make mechanical structure, overload protecting mechanism, short current protective mechanism.
In addition, sampling module 21 includes voltage acquisition module 211, current acquisition module 212, switch state acquisition module
213, residual current acquisition module 214, the voltage acquisition module 211, current acquisition module 212, switch state acquisition module
213, residual current acquisition module 214 is electrically connected with control centre MCU24.
Embodiment two
Such as the embodiment that Fig. 1 to Fig. 5 is the monitoring method that a kind of distributed photovoltaic island state multi-source monitors system, this reality
Applying example is the monitoring method that the distributed photovoltaic island state multi-source based on embodiment one monitors system, the specific steps are as follows:
(1) it is acquired firstly, carrying out voltage acquisition, current acquisition, switch state to grid-connected distribution box 1 by sampling module 21
And residual current acquisition；
(2) secondly, being transmitted the data acquired in step (1) by remote communication module 22；Be transmitted to coincidence and
Preservation tactics module 23 is to export coincidence and security strategy；
(3) finally, passing through the data information of remote communication module 22 and coincidence and the output of Preservation tactics module 23 to main website
System 3, main station system 3 acquire out grid-connected real time data and location status and comprehensive descision prompt photovoltaic island state.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (6)
1. a kind of distributed photovoltaic island state multi-source monitors system, which is characterized in that the monitoring system includes grid-connected distribution
Case (1), grid-connected breaker (2), the main station system for being analyzed for monitoring grid-connected distribution box (1) and acquisition data
(3), the grid-connected distribution box (1), grid-connected breaker (2), main station system (3) sequence are electrically connected, and are connected outside the monitoring system
There is the distributed photovoltaic power supply system for powering to grid-connected distribution box (1), the distributed photovoltaic power supply system is matched with grid-connected
Electronic box (1) electrical connection.
2. distributed photovoltaic island state multi-source according to claim 1 monitors system, which is characterized in that described grid-connected disconnected
Road device (2) includes sampling module (21), remote communication module (22), coincidence and Preservation tactics module (23) and control centre
MCU (24), the sampling module (21), remote communication module (22), be overlapped and Preservation tactics module (23) and control centre
MCU (24) electrical connection.
3. distributed photovoltaic island state multi-source according to claim 2 monitors system, which is characterized in that the sampling mould
Block (21), remote communication module (22), coincidence and Preservation tactics module (23) and control centre MCU (24) are integrated in grid-connected
In breaker (2).
4. distributed photovoltaic island state multi-source according to claim 3 monitors system, which is characterized in that described grid-connected disconnected
Operation mechanical structure, the overload that road device (2) is equipped with the division switch of the protection of the control and overcurrent that switch for realizing division are protected
Protect mechanism, short current protective mechanism.
5. distributed photovoltaic island state multi-source according to claim 4 monitors system, which is characterized in that the sampling mould
Block (21) includes voltage acquisition module (211), current acquisition module (212), switch state acquisition module (213), residual current
Acquisition module (214), the voltage acquisition module (211), current acquisition module (212), switch state acquisition module (213),
Residual current acquisition module (214) is electrically connected with control centre MCU (24).
6. a kind of monitoring method of distributed photovoltaic island state multi-source monitoring system according to claim 5, feature
It is, the specific steps are as follows:
(1) it is acquired firstly, carrying out voltage acquisition, current acquisition, switch state to grid-connected distribution box (1) by sampling module (21)
And residual current acquisition；
(2) secondly, being transmitted the data acquired in step (1) by remote communication module (22)；It is transmitted to coincidence and guarantor
Shield policy module (23) is to export coincidence and security strategy；
(3) finally, passing through the data information of remote communication module (22) and coincidence and Preservation tactics module (23) output to main website
System (3), main station system (3) acquire out grid-connected real time data and location status and comprehensive descision prompt photovoltaic island shape
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346448.1A CN110034583A (en) | 2019-04-26 | 2019-04-26 | A kind of distributed photovoltaic island state multi-source monitoring system and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346448.1A CN110034583A (en) | 2019-04-26 | 2019-04-26 | A kind of distributed photovoltaic island state multi-source monitoring system and monitoring method |
Publications (1)
| Publication Number | Publication Date |
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| CN110034583A true CN110034583A (en) | 2019-07-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910346448.1A Pending CN110034583A (en) | 2019-04-26 | 2019-04-26 | A kind of distributed photovoltaic island state multi-source monitoring system and monitoring method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080130333A1 (en) * | 2004-12-16 | 2008-06-05 | Christian Angerer | Method for Recognizing the Load of an Island Inverter and Island Inverter |
| CN103606963A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/380V user distributor box grid-integration structure |
| CN104330707A (en) * | 2014-11-21 | 2015-02-04 | 国家电网公司 | Island detection system and island detection method |
| CN104795838A (en) * | 2015-04-24 | 2015-07-22 | 国家电网公司 | Intelligent anti-islanding device and automatic islanding detecting and destroying method |
| CN205646842U (en) * | 2016-05-23 | 2016-10-12 | 江苏省电力公司常州供电公司 | 10kV distributing type photovoltaic power generation access device that is incorporated into power networks |
| CN107706943A (en) * | 2017-11-10 | 2018-02-16 | 国家电网公司 | A kind of grid-connected open-circuit system of the lossless intelligent division of anti-isolated island with independent acquisition point and breaking method |
-
2019
- 2019-04-26 CN CN201910346448.1A patent/CN110034583A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080130333A1 (en) * | 2004-12-16 | 2008-06-05 | Christian Angerer | Method for Recognizing the Load of an Island Inverter and Island Inverter |
| CN103606963A (en) * | 2013-12-12 | 2014-02-26 | 国网上海市电力公司 | Distributed photovoltaic power station/380V user distributor box grid-integration structure |
| CN104330707A (en) * | 2014-11-21 | 2015-02-04 | 国家电网公司 | Island detection system and island detection method |
| CN104795838A (en) * | 2015-04-24 | 2015-07-22 | 国家电网公司 | Intelligent anti-islanding device and automatic islanding detecting and destroying method |
| CN205646842U (en) * | 2016-05-23 | 2016-10-12 | 江苏省电力公司常州供电公司 | 10kV distributing type photovoltaic power generation access device that is incorporated into power networks |
| CN107706943A (en) * | 2017-11-10 | 2018-02-16 | 国家电网公司 | A kind of grid-connected open-circuit system of the lossless intelligent division of anti-isolated island with independent acquisition point and breaking method |
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Effective date of registration: 20191210 Address after: Hangzhou City, Zhejiang province 310014 City Zhaohui District eight Applicant after: Power Science Research Institute of Zhejiang Electric Power Co., Ltd. Applicant after: Nanjing Soft Core Technology Co., Ltd. Address before: 210012 3 storeys of Building A, 106 Software Avenue, Yuhuatai District, Nanjing City, Jiangsu Province Applicant before: Nanjing Soft Core Technology Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190719 |