KR102338517B1 - Remote terminal unit for solar power generation - Google Patents

Abstract

The present invention relates to a remote terminal unit (RTU) for solar power generation. More particularly, the present invention relates to an RTU for solar power generation, including: a collection module that collects solar power generation data and transmits the solar power generation data to an analysis server that detects abnormal occurrence of the solar power generation, controls a solar power generation facility according to a server control command received from the analysis server, and transmits a control error based on a preset ring topology when receiving a control error from the analysis server; a communication module for transmitting the control error to an external control center when the control error is received from the collection module based on the ring topology, and receiving a preset control command in response to the control error; and a security module that verifies integrity of the control command based on the ring topology, wherein at least one of the collection module, the communication module, and the security module is configured to control a control target according to the control command when receiving the control command based on the ring topology.

Description

RTU {REMOTE TERMINAL UNIT FOR SOLAR POWER GENERATION}

The present invention relates to a Remote Terminal Unit (RTU) for photovoltaic power generation, and more specifically, controls the photovoltaic power generation facility according to the server control command of the analysis server that detects the photovoltaic power generation abnormality, but the photovoltaic power generation facility and When an error occurs despite the control of the analysis server due to an error such as hardware or software of the RTU, a photovoltaic power generation that can control the error target based on the ring topology so that a preset level of QoS is provided according to the cause of the error It is about RTU for.

Electric energy consumption is continuously increasing worldwide. However, since the amount of energy resources based on fossil fuels is limited, there is a trend to increase the proportion of power generation from renewable energy sources such as solar power generation and wind power generation.

In the case of producing electric energy using such new and renewable energy generation, it is possible to reduce environmental pollutants such as greenhouse gases and fine dust, as well as increase the stability of energy supply from the perspective of sustainable future energy, so its importance is growing day by day. have.

Among them, the solar power generation system has the advantage of having less restrictions on the installation location and the ability to freely determine the installation size according to the need, so the distribution is expanding.

However, the output power of the photovoltaic system varies throughout the day due to external factors such as dust, clouds, and snow, and is also greatly affected by seasonal factors. In order to improve the output power uncertainty, improve the reliability of the power system, and improve the power quality, it is necessary to predict the output power by monitoring the photovoltaic power generation output power and detect the occurrence of an abnormality.

Since such a photovoltaic power generation system must produce electricity stably, prompt notification and action must be taken when a failure occurs.

However, since the photovoltaic power generation facility is usually large in scale and installed in an area that can receive a lot of sunlight, it is difficult to immediately diagnose when a failure occurs, and it takes a lot of manpower, time and money to restore it.

In particular, if the RTU that collects and transmits power generation information produced by the photovoltaic facility breaks down, the power generation status cannot be checked from the remote analysis server, so the power generation status of the photovoltaic facility cannot be grasped until the RTU is restored. There was a problem that a big setback occurred in the operation of the solar power generation facility.

In addition, in general, when the remote analysis server detects an abnormality in solar power generation, the solar power generation facility is controlled through the RTU, but when a failure or error of the facility occurs due to a specific event such as lightning, the remote analysis server cannot detect it it might be In the event of such an analysis server error, an alternative to normalize the system is needed.

: Korea Patent No. 10-1492528 (2015.02.12. Announcement)

The problem to be solved by the present invention is to control the solar power generation facility according to the server control command of the analysis server that detects the solar power generation abnormality, but the control of the analysis server due to errors such as hardware or software of the solar power generation facility and RTU In spite of this, when an error occurs, it is to provide an RTU for photovoltaic power generation that can control the error target based on the ring topology so that a preset level of QoS is provided according to the cause of the error.

In order to solve the above-described problems, the RTU for photovoltaic power generation according to an embodiment of the present invention collects photovoltaic power generation data and transmits it to an analysis server that detects an abnormal occurrence of photovoltaic power generation, and from the analysis server A solar power generation facility is controlled according to a received server control command, but when a control error is received from the analysis server, a collection module that transmits the control error based on a preset ring topology, and a collection module based on the ring topology control It may include a communication module that transmits an error to the external control center when receiving an error, receives a preset control command in response to the control error, and a security module that verifies the integrity of the control command based on the ring topology. .

In this case, at least one of the collection module, the communication module, and the security module may control a control target according to the control command when receiving the control command based on the ring topology.

In addition, the collection module, the communication module, and the security module may perform a control command based on QoS for each level preset according to the control error.

In addition, the collection module, the communication module, and the security module, when receiving a token circulating at a preset cycle based on the ring topology, load the token with information data to be transmitted and transmit it to the destination module, and the information data is It may be one of a control error, a control command according to QoS of a preset level, or a result of executing the control command.

In addition, the collection module, the communication module and the security module detect the communication state of the previous module by transmitting a token circulated at a preset cycle based on a preset ring topology, and if a token is not received from the previous module within a preset period It may be determined that an error has occurred in the previous module.

In addition, the ring topology forms a bidirectional ring topology, and when one of the collection module, the communication module, and the security module detects the occurrence of an abnormality in the previous module, the token is based on the ring topology in the reverse direction of the current token transmission direction. can be transmitted.

In addition, further comprising a switch control module for controlling the switch on / off of the collection module, the communication module and the security module, one of the collection module, the communication module, and the security module, when detecting the occurrence of an abnormality in the previous module , a control command for resetting the switch of the previous module may be transmitted to the switch control module.

In addition, one of the collection module, the communication module, and the security module notifies the control center when an abnormality in the previous module is detected even after a switch reset, but if the previous module in which the abnormal occurrence is detected is a communication module, the collection The module may notify the abnormality of the communication module to the control center using internal wireless communication.

In addition, the communication module, when receiving a specific control command from the control center, a service management terminal of a service company that provides the user with the power of the photovoltaic site managed by the control center, and the user of the user who receives the power The terminal may request an agreement on the execution of the specific control command, and upon power agreement, the corresponding control command may be transmitted to the destination module.

In addition, the communication module, upon receiving the specific control command, requests authentication to the security module through the ring topology, and performs the agreement when the authentication of the security module is completed, and the security module provides the service It is possible to perform authentication for the management terminal and the user terminal.

In addition, the collection module, the communication module and the security module include a preset level corresponding to the information data in the received token as priority information, and if there is priority information in the received token, compare it with its own priority information If the priority information included in the received token is at a lower level, information data pre-stored in the received token may be deleted, and information data for one's own specific event may be loaded and transmitted.

In addition, the control command may be one of control of the solar power generation facility, control of RTU ring topology abnormality, control of software update of the collection module, and control of specific function errors of the collection module.

In addition, the collection module, the communication module and the security module receive the information data if the destination module is itself when receiving a token including information data, and if the destination module is not itself, the next based on a preset ring topology The received token can be sent to the module.

The RTU for photovoltaic power generation according to an embodiment of the present invention, when a control error of the analysis server occurs due to a failure/error of the photovoltaic power generation facility and RTU, etc., a control command according to a preset level of QoS based on a ring topology You can control the error target (control target) by sending it.

At this time, the integrity of the control command transmitted through the ring topology is verified through the agreement of the authenticated agreeers (service management terminal and user terminal), and the ring topology priority is given according to the QoS level of the control command to provide high-level control. By preferentially transmitting and processing commands, it is possible to strengthen security functions and promote overall system stability.

In addition, reliability according to the control can be provided by checking the response to the execution result for the control command according to the control error.

In addition, by periodically checking the status of the RTU component modules (communication module, collection module and security module) using the token of the ring topology, when an abnormality occurs in the component module, the specific module is notified and controlled through notification and control commands. The communication failure can be solved by restoring the

In this case, by using the bidirectional ring topology, when an abnormality is detected in the ring topology of the first direction, it is possible to continuously support QoS by performing communication based on the ring topology of the second direction, which is the reverse of the first direction.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a view showing an overall solar power generation system for explaining an RTU according to an embodiment of the present invention.
2 is a configuration block diagram showing a schematic configuration of an RTU according to an embodiment of the present invention.
3 is a diagram for explaining an operation of an RTU using a ring topology according to an embodiment of the present invention.
4 is a diagram illustrating a level of a control command according to QoS according to an embodiment of the present invention.
FIG. 5 is a diagram for explaining an operation of RTU consensus based on the ring topology of FIG. 3 .

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

Sizes and relative sizes of components indicated in the drawings may be exaggerated for clarity of description. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited items.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components.

Although the first, second, etc. are used to describe various elements or elements, these elements or elements are not limited by these terms, of course. These terms are only used to distinguish one element or component from another. Therefore, it goes without saying that the first element or component mentioned below may be the second element or component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

The following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing an overall solar power generation system for explaining an RTU according to an embodiment of the present invention.

1, the photovoltaic power generation system according to an embodiment of the present invention is a photovoltaic power generation facility 10, RTU (100-) capable of receiving actual photovoltaic data collected from the photovoltaic power generation facility 10 1 to 100n), the analysis server 200 , the database 300 , and various sensors 350 installed in the vicinity of the solar module array 11 may be included.

Here, the photovoltaic power generation data is information collected from each of the photovoltaic module array 11 , the connection board 12 and the inverter 13 of the photovoltaic power generation facility 10 , and the amount of power generation, line voltage and It may be a variety of information such as line current, phase, accumulated power generation, and operation/non-operation status. In addition, information collected from the sensor 350 may be included.

The photovoltaic power generation facility 10 may include a photovoltaic module array 11 , a connecting board 12 and an inverter 13 , and in an embodiment of the present invention, as shown in FIG. 1 , but a coupling method of each configuration can be easily changed by the designer.

In the solar module array 11 , a plurality of solar cell modules that convert sunlight incident on the surface into electrical energy are connected in series or in parallel. The photovoltaic module array 11 may output a DC current and provide it to the connection panel 12 , and a plurality of solar module arrays 11 may be connected to one connection panel 12 .

The connection panel 12 may measure voltage information and current information for each solar module and each time period. A plurality of solar module arrays 11 may be connected in parallel to the connection panel 12 . The connection panel 12 may connect the solar module array 11 and the inverter 13-1 to connect DC power generated from the solar module array 11 in series/parallel to collect. At least one connection panel 12 may be connected to one inverter 13 - 1 .

The inverter 13 may be connected to a plurality of connection boards 12 and cables to receive DC power. In addition, the inverter 13-1 converts the generated power provided in the DC form from the connection panel 12 into an AC to transmit power through the grid power. At this time, the information on the AC power generated by the inverter may be analyzed in real time in the analysis server 200 through the RTU (Remote Terminal Unit, 100-1 to 100-n) for each site.

At this time, the analysis server 200 may be an AI-based analysis system capable of analyzing anomaly detection and anomaly prediction based on solar power generation data received from each RTU, and monitoring overall solar power generation.

The RTU (100-1) can store the photovoltaic power generation data required for analysis in the analysis server 200 in the DB 300, and the RTU 100-1 and the inverter 13-1 have RS-485 communication, etc. It can be connected with a possible cable. At this time, the RTU collects solar power generation data through RS-485 communication, etc., and receives a control command (server control command) according to the abnormal detection of the analysis server 200 from the analysis server 200 to operate the solar power generation facility. can be controlled

The overall control and management of the photovoltaic power generation can be controlled through the analysis server 200, and due to the occurrence of hardware or software errors of the RTU 100-1 or hardware errors of the photovoltaic power generation facility 10, etc. When a control error of the analysis server 200 occurs, the RTU 100 for photovoltaic power generation according to an embodiment of the present invention provides QoS for each level for the control error to control the control target that is the cause of the control error By doing so, it is possible to normalize the solar power generation system.

Here, the control error occurs when the analysis server 200 detects an abnormality in the control of the solar power generation facility 10, and when it is confirmed that an abnormality occurs without normal restoration (for example, when a control error occurs due to software update of the RTU) ), the analysis server 200 may provide a notification about the corresponding control error to the RTU 100-1, and the RTU 100-1 according to an embodiment of the present invention controls the corresponding control based on the ring topology. Control of errors can be performed.

2 is a configuration block diagram showing a schematic configuration of an RTU according to an embodiment of the present invention. 3 is a diagram for explaining an operation of an RTU using a ring topology according to an embodiment of the present invention.

Referring to FIG. 2 , the RTU 100 according to an embodiment of the present invention may include a collection module 110 , a communication module 120 , and a security module 130 , and further includes a switch control module 140 . may include The plurality of RTUs 100-1 to 100-n of FIG. 1 may include the configuration of the RTU 100 of FIG. 2 and implement the same function.

Also, referring to FIG. 3 , the collection module 110 , the communication module 120 , and the security module 130 may form a ring topology that circulates the token T based on a preset ring topology. Each module 110 to 130 may have one physical transmission/reception port, but logically it has a ring topology (a) in a first direction and a ring topology (b) in a second direction opposite to the first direction. A bidirectional ring topology can be formed.

Each module 110 to 130 receives a token that is circulated based on a preset ring topology, and may transmit information data, destination module, priority information, etc. in the token in its turn. At this time, when a token including information data is received from a specific module, that is, one of the modules 110 to 130, the information data is received if the destination module is itself, and if the destination module is not itself, a preset ring topology is used. can send the received token to the next module. In addition, when the destination module confirms receipt of a token including information data, information is deleted from the corresponding token, and the free token can be circulated again based on the ring topology.

The collection module 110 collects photovoltaic power generation data from the photovoltaic power generation facility 10 at a preset period, transmits it to the analysis server 200 that detects the occurrence of a photovoltaic power generation abnormality, and is received from the analysis server 200 . The solar power generation facility can be controlled according to the control command.

In addition, the collection module 110 according to an embodiment of the present invention may transmit a control error to the external control center 400 based on a preset ring topology when receiving a control error from the analysis server 200 .

To this end, the collection module 110 may be installed with a plurality of software capable of collecting, storing, transmitting, processing data, and the like.

The communication module 120 may transmit a control error to the external control center 400 upon receiving a control error from the collection module 110 based on the ring topology, and may receive a preset control command in response to the control error.

The security module 130 may verify the integrity of the control command based on the real-time clock (RTC) based on the ring topology.

At this time, at least one of the modules 110 to 130 may control a control target, ie, an error target, according to the control command when receiving a control command based on the ring topology.

The RTU 100 according to an embodiment of the present invention may perform a control command based on a preset QoS for each level according to a control error. As an example, it may be defined as follows, and is not limited thereto, and may be further classified or added by a designer.

At this time, each control level (Level1 to Level4) can distinguish the control for control errors based on the stability by the collection module 110, the security by the security module 120, and the remote control by the communication module 130. And, the level can be divided according to the prioritized factors (stability, security, and remote control).

Here, the stability may be the maintenance of the normal operation of the collection module 110 for stabilization of the photovoltaic system.

Security can be maintained through the integrity and authentication of participants.

The remote control may be the control of the control object according to the agreement of the participants (Owner: the control center 400, the service management terminal 500, and the user terminal 600) participating in the control execution.

The factors (stability, security, and remote control) prioritized at each level can be confirmed through FIG. 4 .

4 is a diagram illustrating a level of a control command according to QoS according to an embodiment of the present invention. Referring to FIG. 4 , it is possible to check a priority element of a control command according to QoS for each level. At this time, each level is based on all elements, but the elements that are particularly prioritized are distinguished.

The highest level, Level 4, is based on maximum acquisition of all elements, and may focus specifically on remote control. In addition, level 3 is focused on stability, level 2 is security, and level 1 can be the minimum support of each element.

On the other hand, the control command according to each level is transmitted to the destination module based on the ring topology as shown in FIG. 3 to control the control target. In this case, the control command is transmitted through the ring topology after agreement and integrity verification as shown in FIG. 5 are completed. can be transmitted.

A process of performing a control command based on QoS for each level according to an embodiment of the present invention can be described with reference to FIGS. 2 to 5 .

Referring to FIG. 3 , the security module 130 of the RTU 100 according to an embodiment of the present invention generates an initial token circulating a ring topology at a preset cycle based on a real-time clock (RTC) and transmits it to the next module. can At this time, the token may be a free token, and when each module 110 to 130 receives a token circulating at a preset cycle based on the ring topology in its turn, it loads the information data to be transmitted in the token and transmits it to the destination module. can

Here, the information data may be one of a control error, a control command according to a preset level of QoS, and a result of executing the control command. That is, in order to provide QoS according to each level, information data according to function execution can be loaded in the corresponding modules 110 to 130 .

In addition, the control error may be an abnormality of the solar power generation facility, an error in the RTU ring topology, a control error according to a software update of the collection module 110 and an error according to an abnormality in a specific function of the collection module 110 . Control error is determined or predicted whether the solar power generation abnormality or the RTU abnormality is determined or predicted according to the analysis of the solar power generation data (power generation amount, etc.), etc. of the analysis server 200, and the analysis server 200 can be received from

In addition, the control command may be control of the solar power generation facility, control of RTU ring topology abnormality, control of software update of the collection module and control of specific functional errors of the collection module, and the like.

The highest level, Level 4, is based on maximum acquisition of all elements, and may focus specifically on remote control. For example, when the ring topology is performed based on the topology (a) of the first direction, the collection module 110, when receiving a control error from the analysis server 200, applies a control error to the token received in its turn. It can be sent on and off. In this case, when the destination module is designated as the communication module 120 and the control error is greater than or equal to solar power generation, level 4 may be included as priority information in the token.

Based on the topology (a) of the first direction, the collection module 110 transmits the token including the information data to the security module 130, and the security module 130 checks the destination module, and since it is not itself, the next module The token including the received information data may be transmitted to the in-communication module 120 .

Since the destination module is itself, the communication module 120 may transmit a control error of information data to the control center 400 and receive a control command corresponding to the control error to provide QoS corresponding to the control command. That is, as shown in FIG. 5, the participants (the service management terminal 500 and the user terminal 600) request an agreement on the execution of the control command, and when all participant terminals agree, the security module 120 requests integrity verification. Information data can be loaded on a token and transmitted.

When the security module 120 receives a token based on the ring topology (a), it authenticates the participant terminals to verify the integrity, and when the verification is completed, the communication module 110 sends a control command to the collection module 120 That is, a command for controlling the photovoltaic power generation facility according to level 4 (eg, resetting the power of a part or all of the facility) may be transmitted.

The collection module 120 can control by transmitting a control command to the photovoltaic power generation facility that is the control target when receiving the control command, and check the control command result to display the normal operation of the photovoltaic power generation facility in the token to the control center 400 can be notified by

Here, the normal operation check can be confirmed by checking that there is no abnormality in the photovoltaic data received from the photovoltaic power generation facility after the control command, and it should be notified to the control center 400 within a preset time. Accordingly, the QoS according to level 4 can secure the integrity of the control command and reliability by checking the response to the control command execution result.

In this case, the ring topology may be guaranteed to provide QoS according to level 4 during the process from transmission of a control error according to level 4 to confirmation of a response to a result of performing a control command.

In addition, Level 3 is based on all factors (remote control, security and stability), but with a particular focus on stability, where the time factor can be prioritized for immediate processing. As an example, referring to FIG. 3 , the collection module 110 , the security module 120 , and the communication module 130 use the transmission of a token circulated at a preset cycle based on a preset ring topology (a) to transfer the previous module. communication status can be detected.

Specifically, each module 110 to 130 may check a preset period in real time by driving a timer in synchronization with the real-time clock of the security module 120 . At this time, each module 110 to 130 may determine that an abnormality has occurred in the previous module if the token circulating from the previous module is not received within a preset period.

At this time, the specific module (one of 110 to 130) that has determined the abnormality of the previous module notifies the abnormality of the corresponding module to the control center 400, and a control command from the control center 400, that is, the power switch of the abnormal module Upon receiving a control command for resetting , the switch of the abnormal module may be reset by transmitting it to the switch control module 140 .

On the other hand, for immediate processing, instead of notifying the control center 400 of the detection of a control error (abnormality occurrence module), the control command (power switch reset command of the abnormality module) is directly switched from the specific module that has determined the abnormality occurrence module. It may be transmitted to the module 140 . That is, in this case, the process of agreeing on the control command can be omitted.

In addition, the specific module can continuously provide QoS by transmitting a token based on the ring topology (b), which is the reverse of the current token transmission direction, when an abnormal occurrence of the previous module is detected.

On the other hand, if one of the collection module 110 , the communication module 120 and the security module 130 detects an abnormality in the previous module (abnormal occurrence module) even after the switch reset, the control center 400 is notified and inspected. can request At this time, if the previous module in which the abnormal occurrence is detected is the communication module 120, the collection module 110 may notify the abnormality of the communication module 120 to the control center 400 using internal wireless communication (Internet, etc.) have.

Through periodic status check of the collection module 110 , the communication module 120 , and the security module 130 , it is possible to immediately process a control error caused by an abnormality, thereby providing reliability for the level 4 control. In addition, by using a bidirectional topology, QoS can be continuously provided even when a specific module malfunctions.

In addition, level 2 focuses on security, and is a case in which a control error occurs due to a change in software that implements the functions (collection, storage, transmission, processing, etc.) of the collection module 110 . may be a case in which a notification such as a software update is received from the analysis server.

At this time, the collection module 110 transmits the control error to the control center 400 based on the ring topology, and the control center 400 transmits a control command, that is, a control command for the corresponding software update to the communication module 120, and , according to the control command, the communication module 120 requests the security module 130 to verify the integrity of the software based on the ring topology, and when the integrity of the security module 130 is verified, the communication module 120 collects the software control command. It is transmitted to the module 110 so that an update of the corresponding software can be performed.

In addition, level 1 can provide QoS through the minimum support of each element. Specifically, the collection module 110 can transmit a control error on a token when an error occurs due to a specific function, and restart the control command based on the ring topology from the control center 400, that is, software that implements a specific function. The software can be restarted by receiving the control command.

At this time, each module 110 to 130 includes a preset level in the received token as priority information, and if the received token has priority information, the priority information included in the received token is lower than its own priority information If it is a level, it is possible to preferentially process a control command with a high level by deleting the information data pre-stored in the received token and transmitting the information data for one's own specific event.

In this way, the RTU 100 according to an embodiment of the present invention can promote system stabilization of the analysis server 200 by performing a control command based on QoS for each level preset according to a control error through a ring topology. Reliable QoS can be provided through consensus and integrity verification.

At least some of the embodiments of the present invention described above may be implemented as computer-readable codes on a computer-readable recording medium. For example, in FIGS. 2 to 5 , the operation of each module 110 to 130 providing QoS for each level based on the ring topology can be implemented as computer readable codes on a computer readable recording medium. can

The computer-readable recording medium may include any type of recording device in which data readable by a computer system is stored.

Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. may include

In addition, the computer-readable recording medium is distributed and implemented in network-connected computer systems, so that the computer-readable code can be stored and executed in a distributed manner.

Although embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1000: Solar power anomaly detection system
100, 100a to 100n: RTU
110: collection module 120: communication module
130: security module 140: switch control module
200: analysis server 300: DB
350: sensor
10: solar power generation equipment 11: solar module array
12: connection panel 13: inverter group
13a to 13n: inverter

Claims (12)

The solar power generation data is collected and transmitted to the analysis server that detects the occurrence of solar power generation abnormality, and the solar power generation facility is controlled according to the server control command received from the analysis server, but when a control error is received from the analysis server a collection module for transmitting the control error based on the set ring topology;
a communication module for transmitting a control error from the collection module based on the ring topology to an external control center and receiving a preset control command in response to the control error; and
A security module for verifying the integrity of the control command based on the ring topology,
At least one of the collection module, the communication module, and the security module controls a control target according to the control command when receiving the control command based on the ring topology,
The collection module, the communication module, and the security module perform a control command based on the QoS for each level preset according to the control error,
The control command is the fourth level, control of the solar power generation facility, the third level, control over RTU ring topology, the second level, software update control of the collection module, and the first level, specific function error of the collection module becomes one of the controls for
The collection module transmits a control command to the photovoltaic power generation facility when receiving a control command for a control error due to the photovoltaic abnormality, and checks the control command result to confirm the normal operation of the photovoltaic power plant. It provides the fourth level of QoS by notifying the external control center on a ring topology-based token,
The collection module, the communication module, and the security module provide the third level of QoS by resetting the corresponding module when detecting an abnormality in the ring topology,
The collection module provides the second level of QoS by updating the corresponding software when an error occurs due to the software update, and restarts the software performing the specific function when an error occurs according to a specific function to the first level of QoS RTU for photovoltaic power generation, which provides delete According to claim 1,
The collection module, communication module and security module,
Upon receiving a token circulating at a preset cycle based on the ring topology, the information data to be transmitted is loaded onto the token and transmitted to the destination module,
The information data is one of the control error, a control command according to QoS of a preset level, and a result of performing the control command, RTU for photovoltaic power generation. According to claim 1,
The collection module, communication module and security module,
Based on a preset ring topology, a token circulated at a preset cycle is transmitted to detect the communication state of the previous module, and if a token is not received from the previous module within a preset cycle, it is determined that an abnormality has occurred in the previous module. RTU for power generation. 5. The method of claim 4,
The ring topology forms a bidirectional ring topology,
One of the collection module, communication module, and security module, when detecting an abnormal occurrence of the previous module, transmits a token based on a ring topology that is the reverse direction of the current token transmission direction, RTU for photovoltaic power generation. 5. The method of claim 4,
Further comprising a switch control module for controlling the switch on / off of the collection module, the communication module and the security module,
One of the collection module, communication module and security module, when detecting the occurrence of an abnormality in the previous module, transmits a control command to reset the switch of the previous module to the switch control module, RTU for photovoltaic power generation. 7. The method of claim 6,
One of the collection module, communication module and security module,
If an abnormality in the previous module is detected even after the switch reset, the control center is notified. If the previous module in which the abnormal occurrence is detected is a communication module, the collection module notifies the control center of the abnormality in the communication module using internal wireless communication. Notifying, RTU for solar power. According to claim 1,
The communication module is
When receiving a specific control command from the control center, the service management terminal of the service company that provides the user with the power of the photovoltaic power generation site managed by the control center and the user terminal of the user receiving the power of the specific control command RTU for photovoltaic power generation that requests a consensus on performance and transmits the control command to the destination module when power is agreed. 9. The method of claim 8,
The communication module, upon receiving the specific control command, requests authentication to the security module based on the ring topology, and performs the agreement when the authentication of the security module is completed,
The security module, the RTU for photovoltaic power generation to perform authentication for the service management terminal and the user terminal. 4. The method of claim 3,
The collection module, communication module and security module,
A preset level corresponding to the information data is included in the received token as priority information, and if the received token has priority information, the priority information included in the received token is lower than its own priority information If this is the case, RTU for photovoltaic power generation, which deletes the information data stored in the received token and transmits information data for its own specific event. delete 4. The method of claim 3,
The collection module, communication module and security module,
When receiving a token containing information data, if the destination module is itself, the information data is received, and if the destination module is not itself, the received token is transmitted to the next module based on a preset ring topology, solar power generation for RTU.

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