CN113852350B - Photovoltaic power plant control fortune is held system - Google Patents
Photovoltaic power plant control fortune is held system Download PDFInfo
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- CN113852350B CN113852350B CN202111156217.8A CN202111156217A CN113852350B CN 113852350 B CN113852350 B CN 113852350B CN 202111156217 A CN202111156217 A CN 202111156217A CN 113852350 B CN113852350 B CN 113852350B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 110
- 238000012423 maintenance Methods 0.000 claims abstract description 87
- 238000012545 processing Methods 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000003860 storage Methods 0.000 claims abstract description 20
- 238000007726 management method Methods 0.000 claims description 33
- 238000004458 analytical method Methods 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 26
- 230000011664 signaling Effects 0.000 claims description 18
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000003745 diagnosis Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000013499 data model Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000007619 statistical method Methods 0.000 claims description 6
- 238000013480 data collection Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000004422 calculation algorithm Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 238000013500 data storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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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
- 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
Abstract
The application discloses a photovoltaic power station monitoring operation and maintenance system, which comprises a back-end data acquisition system, an operation and maintenance front-end system, a back-end data transmission, storage and processing system and a back-end operation and maintenance management system; from the perspective of actual on-site operation and management, the functions of monitoring, controlling, producing, managing and the like are deeply integrated through a set of complete photovoltaic power station monitoring operation and maintenance system, and all independent systems are comprehensively opened, so that the operation and maintenance requirements of operation and maintenance personnel of the photovoltaic power station are met.
Description
Technical Field
The application belongs to the technical field of control of photovoltaic power stations, and particularly relates to a photovoltaic power station monitoring operation and maintenance system.
Background
At present, as the photovoltaic power station has more devices, each device is monitored by a monitoring system of the device, such as an inverter and a box transformer, a data acquisition card is often adopted, data is sent into a ring network switch and then into a data storage server of the ring network switch, and the inverter and the box transformer are monitored by the monitoring system. Therefore, the current photovoltaic power station monitoring system adopts a technical mode of uniformly monitoring after respective data of an inverter, a box transformer system, an AVC/AGC, an environment monitor, a current collecting circuit, an electric energy meter and the like are collected.
But for operation and maintenance personnel, production equipment monitoring is only a part of the production of the photovoltaic power station. Besides, the production report form is filled, the production data is counted, the operation ticket of the production operation and maintenance work ticket is issued, and the operation and maintenance work is required to be carried out by on-site operation and maintenance personnel. At present, the photovoltaic power station is basically in a state of little person on duty, so that 1-2 operators on duty can deal with the scattered work, and great inconvenience is brought to the work of on-site operation and maintenance personnel.
Disclosure of Invention
The application aims to provide a photovoltaic power station monitoring operation and maintenance system, which aims to solve the problems that in the prior art, the number of on-site operation and maintenance personnel of a photovoltaic power station is small, and the photovoltaic power station cannot be used for producing various scattered works.
In order to achieve the above purpose, the present application adopts the following technical scheme:
a photovoltaic power station monitoring operation and maintenance system comprises a back-end data acquisition system, an operation and maintenance front-end system, a back-end data transmission, storage and processing system and a back-end operation and maintenance management system;
the back-end data acquisition system is used for acquiring real-time operation data of photovoltaic power station equipment and the system;
the operation and maintenance front-end system is used for operation and maintenance management, statistical analysis and report production; monitoring and managing equipment and systems in the photovoltaic power station according to the operation data acquired by the back-end data acquisition system;
the back-end data transmission, storage and processing system is used for data processing, data transmission, storage and data calculation;
the data processing is used for carrying out remote control locking, photovoltaic power station equipment control and regulation operation on remote control and remote regulation data processing; performing engineering value conversion processing on telemetry data; the remote signaling quantity data is processed, remote measurement and remote signaling quantity parameters are modified into needed values and states, state inversion can be achieved on the remote signaling quantity data, and the time sequence of the remote signaling quantity data is recorded;
the data transmission storage is used for buffering the data which is failed to be transmitted in the transmission node when the uplink transmission link is interrupted; after the uplink resumes communication, transmitting the buffered data in a compressed manner; encrypting the data stream during transmission of the data;
the data calculation is used for calling an operation and maintenance front-end system, carrying out statistical analysis and producing reports, realizing automatic filling of generated energy daily reports, monthly reports and annual reports, and establishing a fault analysis data model;
the back-end operation management system is used for editing the photovoltaic power station work ticket and the operation ticket template, and storing and pushing the fault processing knowledge base.
Optionally, the operation and maintenance front-end system specifically includes: the system comprises an operation monitoring system, an operation alarm system, an operation maintenance management system, a production statistics system and a fault analysis system;
the operation monitoring system is used for monitoring and operating the operation of the system equipment;
the operation alarm system is used for automatically monitoring and alarming system equipment, and triggering an operation and maintenance management system and a production statistics analysis system according to current alarm information;
the operation and maintenance management system is used for managing working tickets and operation tickets of the photovoltaic power station and storing and pushing fault processing knowledge bases;
the production statistical system is used for automatically filling production reports of the photovoltaic power station;
the fault analysis system is used for calling the operation data monitored by the operation monitoring system and diagnosing the faults of the equipment and the system.
Optionally, the monitoring content of the operation alarm system includes: photovoltaic subarray monitoring, box transformer monitoring, inverter monitoring, photovoltaic panel support control, combiner box monitoring, collector line monitoring and AGC/AVC monitoring.
Optionally, the photovoltaic power station work ticket and operation ticket management includes: after the relevant fault information of the system is found, the corresponding system, equipment work ticket and operation ticket are directly triggered, and when the corresponding alarm fault is processed, all the processed information is saved after the equipment alarm information disappears.
Optionally, storing and pushing the fault handling knowledge base includes: the faults are classified and counted according to the equipment and the fault types, and a fault processing knowledge base is formed; when the similar faults occur again, pushing relevant work tickets and operation ticket contents to the staff.
Optionally, the fault analysis system performs equipment and system fault diagnosis specifically includes: and calling all operation data monitored by the operation monitoring system, and building a relevant diagnosis analysis model according to a plurality of fault analysis data models set by the fault analysis system or according to a data calculation tool free fitting data combination provided by the system, so as to carry out data statistics analysis and carry out equipment and system fault diagnosis.
Optionally, after the back-end data acquisition system acquires real-time operation data of the photovoltaic power station equipment and the system, the acquired data is sent into a real-time database for the operation and maintenance front-end system to monitor and alarm the equipment and the system in the photovoltaic power station.
Optionally, the data collected by the back-end data collection system includes telemetry, telemetry and telemetry data.
Optionally, the back-end data transmission, storage and processing system is further used for checking the rationality of the data, eliminating overflow and failure data beyond the rationality range, and generating corresponding alarm information; the method is also used for carrying out zero drift processing on the data, defining a zero setting range for each measured value, and resetting the measured value to zero when the measured value is smaller than a certain dead zone; and the automatic bypass generation processing is also used for setting automatic bypass generation processing, and when a bypass generation line is bypassed, the values of the active, reactive and current of the bypass are automatically replaced by the values of the generated line, and the bypass generation table is logged in.
Optionally, the back-end operation management system is further used for canceling and modifying the issued work ticket and operation ticket; storing and pushing the fault processing knowledge base comprises counting working tickets and operation tickets with the same alarm type to form a fault knowledge base; when the same alarm triggers the working ticket and the operation ticket automatically next time, the staff pushes the related historical working ticket and operation ticket.
The beneficial effects of the application are as follows:
1. the photovoltaic power station monitoring operation and maintenance system provided by the embodiment of the application comprises a back-end data acquisition system, an operation and maintenance front-end system, a back-end data transmission, storage and processing system and a back-end operation and maintenance management system; from the perspective of actual on-site operation and management, the functions of monitoring, controlling, producing, managing and the like are deeply integrated through a set of complete photovoltaic power station monitoring operation and maintenance system, and all independent systems are comprehensively opened, so that the operation and maintenance requirements of operation and maintenance personnel of the photovoltaic power station are met.
2. The photovoltaic power station monitoring operation and maintenance system provided by the embodiment of the application can be used for classifying and counting similar work tickets and operation tickets, counting the work tickets and operation tickets with similar alarm types and forming a fault knowledge base. When the next similar alarm triggers the working ticket and the operation ticket automatically, the related historical working ticket and operation ticket are pushed at the same time for operators to refer to, so that the fault processing efficiency is improved.
3. The photovoltaic power station monitoring operation and maintenance system provided by the embodiment of the application is provided with a data buffer mode, when an uplink transmission link is interrupted, the system can immediately enter the data buffer mode, and data which are failed to be transmitted are buffered at a transmission node. After the uplink resumes communication, the system starts the breakpoint resume function, and under the condition of not influencing the real-time data transmission, the buffered data is transmitted in a compressed mode, so that the transmission efficiency is improved.
4. The photovoltaic power station monitoring operation and maintenance system provided by the embodiment of the application can display the system equipment alarm information in a text, chart and audible and visual alarm mode and perform alarm recording.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 is a schematic diagram of a photovoltaic power plant monitoring operation and maintenance system according to an embodiment of the present application.
FIG. 2 is a schematic diagram of monitoring content of an alarm system according to an embodiment of the present application.
FIG. 3 is a schematic diagram of a work ticket and operation ticket management in an embodiment of the present application.
Detailed Description
The application will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The following detailed description is exemplary and is intended to provide further details of the application. Unless defined otherwise, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the application.
The embodiment of the application provides a photovoltaic power station monitoring operation and maintenance system, which integrates functions of monitoring, control, production, management and the like deeply through a set of complete photovoltaic power station monitoring operation and maintenance system from the angles of actual on-site operation and maintenance and management, and comprehensively opens up each independent system to meet the operation and maintenance requirements of operation and maintenance personnel of the photovoltaic power station.
As shown in fig. 1, a photovoltaic power station monitoring operation and maintenance system includes: the system comprises an operation and maintenance front-end system, a back-end data acquisition system, a back-end data transmission, storage and processing system and a back-end operation and maintenance management system.
In the embodiment, the operation and maintenance front-end system mainly realizes the functions of system equipment operation monitoring and operation, system equipment alarm management, operation and maintenance management, statistical analysis, production report and the like of operators in the photovoltaic power station. Comprising the following steps: the system comprises an operation monitoring system, an operation alarm system, an operation maintenance management system, a production statistics system and a fault analysis system.
Specifically, the operation monitoring system mainly realizes operation monitoring and operation functions of the system equipment, and as an example, contents monitored by the operation monitoring system include, but are not limited to: A. a power station information overview; B. monitoring a photovoltaic subarray; C. monitoring a box transformer; D. monitoring an inverter; E. controlling a photovoltaic panel bracket; F. monitoring a collecting box; G. an environmental detector; H. monitoring a collecting line; I. AGC/AVC monitoring; J. optical power prediction monitoring; K. and (5) monitoring an electric energy meter. A, B, C, D, E, F, being located in a production safety area, is controllable and monitorable; G. h, I, J, K, because of being located in two production areas, is required by the safety of the power network, is one-way communication, and can only be monitored and not controlled.
Specifically, the operation and maintenance front-end system displays the alarm information of the system equipment in a text, chart and audible and visual alarm mode, and performs alarm recording. The operation alarm system realizes automatic monitoring and alarm of system equipment, and as an example, the monitoring content of the operation alarm system comprises but is not limited to: A. a power station information overview; B. monitoring a photovoltaic subarray; C. monitoring a box transformer; D. monitoring an inverter; E. controlling a photovoltaic panel bracket; F. monitoring a collecting box; H. monitoring a collecting line; I. AGC/AVC monitoring.
In a preferred embodiment of the application, the operation alarm system can also automatically trigger the operation and maintenance management system and the production statistical analysis system according to the current alarm information.
Specifically, the operation and maintenance management system mainly realizes the management functions of a photovoltaic power station work ticket and an operation ticket (two tickets) and the storage and pushing functions of a fault processing knowledge base.
As an example, the management function of the working ticket and the operation ticket (two tickets) can automatically and directly trigger the corresponding working ticket and the operation ticket of the system and the equipment according to the system related fault information found by the operation alarm system, and can also be manually added by an operator. When the operator finishes processing the corresponding alarm faults and the equipment alarm information disappears, the operation and maintenance management system automatically saves all the processed information. The storing and pushing functions of the fault processing knowledge base are to classify and count faults according to equipment and fault types, and form the fault processing knowledge base. When similar faults occur again, the operation and maintenance management system pushes the contents of the related work tickets and the operation tickets (two tickets) for reference of operators.
Specifically, the production statistics system is used for realizing the automatic filling function of the photovoltaic power station production report.
As an example, the automatic filling of the production report can automatically fill daily reports, monthly reports and annual reports of the generated energy of the photovoltaic power station. The production statistics system can automatically read the related data such as the power generation amount of the photovoltaic power station inverter, the online electric energy meter and the like monitored by the operation monitoring system, and perform related calculation according to the logic relationship.
Specifically, the fault analysis system can call all operation data monitored by the operation monitoring system to perform data statistics analysis, so as to perform equipment and system fault diagnosis.
As an example, an operator may set up several failure analysis data models according to the failure analysis system (for example, may set up an analysis model according to the analysis methods provided in documents Cong Weilun, zhang Bo, xia Yadong, xing Chaolu, university of electronic technology energy science and engineering institute, or patent 201910300340.9, photovoltaic array failure diagnosis method and apparatus based on space-time distribution characteristics, etc.), or may set up a relevant diagnosis analysis model by freely fitting a data combination according to a data calculation tool provided by the system.
In this embodiment, the back-end data acquisition and storage system has the main function of acquiring real-time operation data of photovoltaic power station equipment and the system. The method comprises the steps of collecting real-time operation data of photovoltaic power station equipment and a system through data collection software, and sending the collected data into a real-time database (redis, PI and the like) for being used in an operation and maintenance front-end system: and the photovoltaic power station equipment and the system are monitored in real time by the operation monitoring system and the operation alarm system.
Specifically, the data types collected by the back-end data collection and storage system comprise telemetry, remote signaling, remote pulse and other data types.
As one example, data within a photovoltaic power plant that needs to be collected includes, but is not limited to, the following monitoring, surveillance data:
A. a power station information overview; B. monitoring a photovoltaic subarray; C. monitoring a box transformer; D. monitoring an inverter; E. controlling a photovoltaic panel bracket; F. monitoring a collecting box; G. an environmental detector; H. monitoring a collecting line; I. AGC/AVC monitoring; J. optical power prediction monitoring; K. and (5) monitoring an electric energy meter.
As an example: inverter monitoring, the acquisition of which includes but is not limited to the following data:
(1) Inverter telemetry data: inverter solar power generation, accumulated power generation, cabinet temperature, conversion efficiency, PV voltage, PV current, PV input power, phase voltage, phase current, power factor, output active power, output reactive power, etc
(2) Inverter telemetry data: inverter start, stop, reset signals, inverter fault signals, etc
In this embodiment, the function of the back-end data transmission, storage and processing system is a data processing, transmission, storage and data calculation function such as remote control and remote signaling.
Specifically, the data processing mainly includes: remote control and remote adjustment data processing, remote measurement data processing and remote signaling data processing.
As one example, remote control, remote adjustment amount data processing:
the photovoltaic power station monitoring operation and maintenance system provided by the application has a remote control locking function. The lockout condition includes: the direct current voltage is lower than the lower limit, and the power-saving switch, the switch or the circuit is in an overhauling state and the like;
the photovoltaic power station monitoring operation and maintenance system provided by the application is provided with a controlled and regulated object: opening/closing of a breaker and a disconnecting link; switching on/off of the machine set; adjusting a transformer tap; switching and adjusting reactive compensation equipment; set point control (analog and pulse); protecting the functions of lower loading of fixed values and the like; aiming at the characteristic of more photovoltaic power station inverters and box-type transformer equipment, the batch remote control function can be realized by a batch processing technology means.
As one example, telemetry data processing:
the photovoltaic power station monitoring operation and maintenance system provided by the application can perform engineering value conversion processing through linear algorithm conversion, nonlinear algorithm conversion and the like. Such as: linear algorithm conversion: the minimum and maximum values of the analog-to-digital converted data correspond to the minimum and maximum values of the engineering quantity of the analog quantity, and are converted into the engineering quantity by y=kx+b. Nonlinear algorithm conversion: nonlinear conversion is converted by one interpolation through points on a set of curves given in sequence. Meanwhile, a data rationality checking function is set, overflow and failure data exceeding a rationality range are removed, a database is not input, and corresponding alarm information is generated. A data zero-shift processing function is set, and a zero-shift range (zero dead zone) is defined for each measured value. For measurements less than a certain dead zone, the measurement may be reset to zero. And setting an automatic bypass substitution processing function, and when a bypass is substituted for a line, automatically replacing the value of the substituted line with the values of the active, reactive and current of the bypass and logging in a substitution table.
As one example, telemetry traffic data processing:
the photovoltaic power station monitoring operation and maintenance system provided by the application can realize a manual counting function on remote signaling quantity data. Remote measurement and remote signaling quantity parameters in a real-time database of the transformer substation are modified into needed values and states, so that display information of a background monitor and a main station of a monitoring system of the transformer substation is changed, various data and running states in an actual station are not changed, and special monitoring or control is realized.
The photovoltaic power station monitoring operation and maintenance system provided by the application can realize a state negation function for remote signaling quantity data. Different states of the equipment 0 and 1 can be inverted according to the requirement, and parameters of the open and close states and normal/abnormal states of the total station equipment are unified.
The photovoltaic power station monitoring operation and maintenance system provided by the application can be used for performing a time sequence recording function on remote signaling volume data, and can smoothly record the remote signaling volume data in time according to time so as to realize SOE event sequence recording.
Specifically, the data transmission and storage functions include the following:
as an example, the photovoltaic power station monitoring operation and maintenance system provided by the application is used for transmitting communication data by using standard power specifications. The data service provided outwards is sent to the outside after the network forward isolating device.
As an example, the photovoltaic power station monitoring operation and maintenance system provided by the application sets a data buffer mode; when the uplink transmission link is interrupted, the system can immediately enter a data buffering mode, and data with transmission failure is buffered at the transmission node. After the uplink resumes communication, the system starts the breakpoint resume function, and the buffered data is transmitted in a compressed manner without affecting the real-time data transmission.
As an example, the photovoltaic power station monitoring operation and maintenance system provided by the application sets the encryption function of the data stream; and an encryption algorithm such as SSL, DES, base and the like can be selected to encrypt and transmit the pushed data stream in real time, and meanwhile, a decryption algorithm of an opposite terminal is provided, so that the data security of the equipment is ensured.
As an example, the photovoltaic power station monitoring operation and maintenance system provided by the application is provided with corresponding database software (redis and the like) and hardware (Langchao NF5270M5 and the like) for data storage. The storage space at least meets the size of the storage space for storing the photovoltaic power station monitoring operation and maintenance system for 3 years.
Specifically, the data calculation function includes the following:
as an example, the photovoltaic power station monitoring operation and maintenance system provided by the application can perform algebraic operation types, logical operation and mixed operation such as addition, subtraction, multiplication, division, square, evolution, absolute value taking, sign inversion, algebraic sum, integration, average, maximum, minimum and the like, and the calculation period of the calculation points can be freely set.
The data calculation function is called by the operation and maintenance front-end system production statistics system and the fault analysis system. And the automatic filling of the daily report, the monthly report and the annual report of the generated energy and the establishment of a fault analysis data model are realized.
In this embodiment, the back-end operation and maintenance management system mainly realizes functions of editing the photovoltaic power station working ticket and the operation ticket (two tickets) template, storing and pushing the fault processing knowledge base.
Specifically, system engineers and operation staff can edit photovoltaic power station work ticket and operation ticket (two ticket) templates in the back-end operation management system. And the two tickets which have been issued are cancelled and modified. And meanwhile, classifying and counting similar or same working tickets and operation tickets, and counting the working tickets and operation tickets with similar or same alarm types to form a fault knowledge base. When the next similar or same alarm triggers the working ticket and the operation ticket automatically, the related historical working ticket and operation ticket are pushed at the same time for operators to refer to, so that the fault processing efficiency is improved.
It will be appreciated by those skilled in the art that the present application can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the application or equivalents thereto are intended to be embraced therein.
Claims (9)
1. The photovoltaic power station monitoring operation and maintenance system is characterized by comprising a rear-end data acquisition system, an operation and maintenance front-end system, a rear-end data transmission, storage and processing system and a rear-end operation and maintenance management system;
the back-end data acquisition system is used for acquiring real-time operation data of photovoltaic power station equipment and the system; the type of the operation data collected by the back-end data collection system comprises telemetry, remote signaling and remote pulse data; sending the collected operation data into a real-time database for real-time monitoring of the photovoltaic power station equipment and the system by an operation monitoring system and an operation alarm system in an operation and maintenance front-end system;
the operation and maintenance front-end system is used for operation and maintenance management, statistical analysis and report production; monitoring and managing equipment and systems in the photovoltaic power station according to the operation data acquired by the back-end data acquisition system; the operation and maintenance front-end system comprises: the system comprises an operation monitoring system, an operation alarm system, an operation maintenance management system, a production statistics system and a fault analysis system; the operation monitoring system is used for monitoring and operating the operation of the system equipment according to the operation data acquired by the back-end data acquisition system; the operation alarm system is used for automatically monitoring and alarming the system equipment according to the operation data acquired by the back-end data acquisition system, and triggering the operation and maintenance management system and the production statistics analysis system according to the current alarm information; the operation and maintenance management system is used for managing working tickets and operation tickets of the photovoltaic power station and storing and pushing fault processing knowledge bases; the production statistics system is used for automatically filling the production report of the photovoltaic power station; the fault analysis system is used for calling the operation data monitored by the operation monitoring system and diagnosing the faults of equipment and the system;
the back-end data transmission, storage and processing system is used for providing data processing, data transmission, storage and data calculation for remote control and remote signaling data;
the data processing is used for carrying out remote control locking, photovoltaic power station equipment control and regulation operation on remote control and remote regulation data processing; performing engineering value conversion processing on telemetry data; the remote signaling quantity data is processed, remote measurement and remote signaling quantity parameters are modified into needed values and states, state inversion can be achieved on the remote signaling quantity data, and the time sequence of the remote signaling quantity data is recorded;
the data transmission storage is used for buffering the data which is failed to be transmitted in the transmission node when the uplink transmission link is interrupted; after the uplink resumes communication, transmitting the buffered data in a compressed manner; encrypting the data stream during transmission of the data;
the data calculation is used for calling an operation and maintenance front-end system, carrying out statistical analysis and producing reports, realizing automatic filling of generated energy daily reports, monthly reports and annual reports, and establishing a fault analysis data model;
the back-end operation management system is used for editing the photovoltaic power station work ticket and the operation ticket template, and storing and pushing the fault processing knowledge base.
2. The photovoltaic power plant monitoring operation and maintenance system according to claim 1, wherein the operation alarm system monitoring content comprises: photovoltaic subarray monitoring, box transformer monitoring, inverter monitoring, photovoltaic panel support control, combiner box monitoring, collector line monitoring and AGC/AVC monitoring.
3. The photovoltaic power plant monitoring operation and maintenance system according to claim 1, wherein the photovoltaic power plant work ticket, operation ticket management comprises: after the relevant fault information of the system is found, the corresponding system, equipment work ticket and operation ticket are directly triggered, and when the corresponding alarm fault is processed, all the processed information is saved after the equipment alarm information disappears.
4. A photovoltaic plant monitoring operation and maintenance system according to claim 3, wherein the storing and pushing of the fault handling knowledge base comprises: the faults are classified and counted according to the equipment and the fault types, and a fault processing knowledge base is formed; when the similar faults occur again, pushing relevant work tickets and operation ticket contents to the staff.
5. The photovoltaic power plant monitoring operation and maintenance system according to claim 1, wherein the fault analysis system performs equipment and system fault diagnosis specifically comprising: and calling all operation data monitored by the operation monitoring system, and building a relevant diagnosis analysis model according to a plurality of fault analysis data models set by the fault analysis system or according to a data calculation tool free fitting data combination provided by the system, so as to carry out data statistics analysis and carry out equipment and system fault diagnosis.
6. The photovoltaic power plant monitoring operation and maintenance system according to claim 1, wherein after the back-end data acquisition system acquires real-time operation data of the photovoltaic power plant equipment and the system, the acquired data is sent into a real-time database for the operation and maintenance front-end system to monitor and alarm equipment and the system in the photovoltaic power plant.
7. The photovoltaic power plant monitoring operation and maintenance system of claim 6, wherein the data collected by the back-end data collection system includes telemetry, and telemetry data.
8. The photovoltaic power station monitoring operation and maintenance system according to claim 1, wherein the back-end data transmission, storage and processing system is further used for checking the rationality of data, eliminating overflow and failure data beyond the rationality range, and generating corresponding alarm information; the method is also used for carrying out zero drift processing on the data, defining a zero setting range for each measured value, and resetting the measured value to zero when the measured value is smaller than a certain dead zone; and the automatic bypass generation processing is also used for setting automatic bypass generation processing, and when a bypass generation line is bypassed, the values of the active, reactive and current of the bypass are automatically replaced by the values of the generated line, and the bypass generation table is logged in.
9. The photovoltaic power plant monitoring operation and maintenance system according to claim 1, wherein the back-end operation and maintenance management system is further configured to cancel and modify an issued work ticket and an operation ticket; storing and pushing the fault processing knowledge base comprises counting working tickets and operation tickets with the same alarm type to form a fault knowledge base; when the same alarm triggers the working ticket and the operation ticket automatically next time, the staff pushes the related historical working ticket and operation ticket.
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| CN202111156217.8A CN113852350B (en) | 2021-09-29 | 2021-09-29 | Photovoltaic power plant control fortune is held system |
| PCT/CN2022/070952 WO2023050643A1 (en) | 2021-09-29 | 2022-01-10 | Monitoring, operation and maintenance system for photovoltaic power station |
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| CN202111156217.8A CN113852350B (en) | 2021-09-29 | 2021-09-29 | Photovoltaic power plant control fortune is held system |
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| CN113852350B (en) * | 2021-09-29 | 2023-11-03 | 中国华能集团清洁能源技术研究院有限公司 | Photovoltaic power plant control fortune is held system |
| CN116865447B (en) * | 2023-07-20 | 2024-01-26 | 南京欧陆电气股份有限公司 | Distributed wind power and photovoltaic complementary power generation control management method and system |
| CN116910224B (en) * | 2023-09-13 | 2023-11-21 | 四川金信石信息技术有限公司 | Method and system for extracting switching operation information based on large language model |
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| WO2023050643A1 (en) | 2023-04-06 |
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