KR20190064782A - New regeneration energy monitoring system - Google Patents

Abstract

The present invention relates to a renewable energy monitoring system which can easily check state and power information on a plurality of peripheral devices. According to the present invention, the renewable energy monitoring system comprises: a solar device including a plurality of solar modules for converting light into DC power; a connection board device for outputting a first power measurement value obtained by measuring the DC power when the DC power is input; an inverter device for converting the DC power input through the connection board device into AC power to output the same to the outside, and outputting a second power measurement value obtained by measuring the AC power; a weather measuring device for measuring and outputting a temperature value corresponding to a surface temperature of the solar modules and a solar radiation amount value corresponding to a solar radiation amount; and a web monitoring unit (WMU) for generating monitoring information on the basis of the first and second power measurement values, the temperature value, and the solar radiation amount value and storing the same in an external server.

Description

{NEW REGENERATION ENERGY MONITORING SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a renewable energy monitoring system, and more particularly, to a renewable energy monitoring system that can easily check status and power information of a plurality of peripheral devices.

In recent years, the social cost of power supply has soared, and it is difficult to meet the rapidly increasing demand. In view of the social problems, the government plans to supply 1 million green homes to 2020 by 2020, And subsidies are provided for the installation of new and renewable energy facilities to support the spread of renewable energy including wind power and solar power.

As a result, the demand for power generation facilities for new and renewable energy has increased, and the development of power generation facilities has been actively conducted.

However, since the solar power generation facilities to date have been designed to be suitable for large capacity, it is in the process of developing solar power generation facilities for low capacity such as home use.

Recently, research is underway to enable users to check status information such as power generated from photovoltaic power generation facilities from the outside.

It is an object of the present invention to provide a new and renewable energy monitoring system which is easy to check status and power information for a plurality of peripheral devices.

A renewable energy monitoring system according to the present invention is a solar power apparatus including a plurality of solar modules for converting light into direct current power, a first power measurement value obtained by measuring the direct current power at the time of inputting the direct current power An inverter device for converting the DC power input through the connection unit into AC power and outputting the AC power to the outside and outputting a second power measurement value obtained by measuring the AC power; A monitoring device for measuring and outputting a solar radiation value corresponding to a temperature value and a solar radiation amount corresponding to the surface temperature and monitoring information based on the first and second power measurement values, You can include a Web Monitoring Unit (WMU) that stores on the server.

In addition, the WMU may include a DNS (Domain Name Server) module for connecting the user terminal to a web corresponding to the web access request when a web access request is input from an external user terminal, A first power amount generated based on the second power measurement value, a second power amount output based on the second power measurement value, a power efficiency, a surface temperature corresponding to the temperature value, and a value corresponding to the insolation value The first diagnosis information diagnosing the state of the plurality of solar modules according to whether the first power amount belongs to the surface temperature and the standard production power amount range set according to the solar radiation amount, Comparing the first and second amounts of power to determine whether the amount of loss of power that is lost at the time of power conversion in the inverter apparatus falls within a set reference loss amount A status diagnostic module for generating second diagnostic information diagnosing the status of the inverter device according to the detected temperature and the first and second diagnostic information, And a control module that stores the monitoring information in the external server and visualizes the monitoring information stored in the external server and transmits the visualized information to the user terminal when the user terminal accesses the web.

The reference production electric energy amount range may be a difference between the surface temperature and the set reference temperature, and a maximum electric energy amount and a minimum electric energy amount calculated based on the reference current and the reference voltage set according to the irradiation amount.

Wherein the state diagnosis module reduces the first power amount by 0.4% every 1 degree if the surface temperature is higher than the reference temperature based on the irradiation amount and if the surface temperature is lower than the reference temperature, The standard production power range in which the first power amount is increased by 0.4% may be extracted to diagnose whether the first power amount belongs.

Wherein the state diagnostic module generates the first diagnostic information indicating that each of the plurality of solar modules is in a normal state when the first power amount falls within the standard production power amount range, The first diagnostic information indicating that at least one of the plurality of solar modules is in a replacement state or an abnormal state can be generated.

The state diagnostic module generates the second diagnostic information indicating that the inverter device is in a steady state if the loss power amount falls within the reference loss power amount range and if the loss power amount does not fall within the reference loss power amount range, Or the second diagnostic information indicating that the second diagnostic information is abnormal.

The control module may update the communication protocol for the additional device when a new additional device is connected.

The WMU may further include an input module for inputting a display command and a display module for displaying the monitoring information under the control of the control module when the display command is input.

The control module may display a notification of an inspection request of the plurality of solar modules to the display module when the first diagnostic information indicating that the plurality of solar modules is in a replacement state or an abnormal state is input.

The control module may display a notification of an inspection request of the inverter device to the display module when the second diagnostic information indicating that the inverter device is replaced or abnormal is input.

The control module may calculate the surface temperature and the amount of change in the solar radiation amount, calculate the expected amount of power for the DC power according to the amount of change, and transmit the estimated amount of power to the user terminal.

The renewable energy system according to the present invention may further include at least one of an ACB (Air Circuit Breaker) and a VCB (Vaccum curcuit breaker) for supplying or blocking the AC power output from the inverter module to the outside.

The renewable energy system according to the present invention calculates status information transmitted from a plurality of peripheral devices and stores the status information in an external server. When the user terminal accesses the web, the monitoring information stored in the external server is visualized and transmitted to the user terminal, There is an advantage that the user can easily confirm the power consumed or produced by the plurality of peripheral devices.

1 is a system block diagram briefly showing a renewable energy system according to the present invention.
2 is a control block diagram showing a control configuration of a Web Monitoring Unit (WMU) shown in FIG.
3 is a graph showing current and voltage characteristic curves according to a change in irradiation dose.
4 is a graph showing current and voltage characteristic curves according to surface temperature changes of a plurality of solar modules.
5 is a flowchart illustrating an operation method of the renewable energy system according to the present invention.
6 is a flowchart illustrating an operation method of the renewable energy system according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, the renewable energy system according to the embodiment will be described in detail with reference to the drawings.

1 is a system block diagram briefly showing a renewable energy monitoring system according to the present invention.

Referring to FIG. 1, the renewable energy monitoring system may include a plurality of peripheral devices 110 to 160 and a Web Monitoring Unit (WMU) 200.

A plurality of peripheral devices 110 to 150 may include a solar device 110, a connection device 120, an inverter device 130, an air circuit breaker 140, a VACUM curcuit breaker 150, And a meteorological measuring device 160. The plurality of peripheral devices may include, but is not limited to, one or more of the components described above.

The solar device 110 may include a plurality of solar modules (not shown). The plurality of solar modules can convert solar light (light) into direct current power. The plurality of solar modules may be adjustable in angle through a separate mechanism to increase the light-condensing efficiency.

The connection unit 120 may be located between the solar device 110 and the inverter device 130 and may transmit the DC power input from the solar device 110 to the inverter device 130. [

The connection subsystem 120 may transmit the first power measurement value s1, which measures the DC power input from the solar power device 110, to the WMU 200 in real time or at set time intervals.

The connection unit 120 generates the first power measurement value s1 and provides the connection half control module 122 and the WMU 200 which are capable of providing or blocking the DC power to the inverter unit 130 Lt; RTI ID = 0.0 > s1 < / RTI >

The inverter device 130 can convert the DC power input from the connection unit 120 into AC power.

The inverter device 130 includes an inverter 132 for converting DC power into AC power, a second power measurement value s2 for controlling the operation of the inverter 132 and measuring the generated AC power, And an inverter communication module 136 that can transmit the second power measurement value s2 generated by the inverter control module 134 to the WMU 200. [

The ACB 140 is an air circuit breaker, which is used for protecting the circuit on the low-voltage side and is used on the secondary side of the generator. ACB 140 may generate third state information s3 for the current state in real time or at predetermined time intervals and transmit it to WMU 200. [

The VCB 150 is a vacuum circuit breaker, which is used for protecting the high-voltage side circuit and is used for the primary side of the generator. The VCB 150 may generate the fourth state information s4 for the current state in real time or at predetermined time intervals and transmit it to the WMU 200. [

The ACB 140 and the WCB 150 may be coupled to the connection unit 120 or the inverter unit 130, but are not limited thereto.

Third and fourth state information s3 and s4 may be information indicating an operation to maintain or interrupt the power supply or supply according to the current and / or voltage passing through the ACB 140 and the WCB 150 .

The meteorological instrument 160 can measure and output a solar radiation value corresponding to a temperature value and a solar radiation amount corresponding to the surface temperature of the plurality of solar modules. The meteorological apparatus 160 may transmit the fifth status information s5 including the temperature value and the irradiation value to the WMU 200 in real time or at predetermined time intervals.

The WMU 200 receives the first and second power measurement values s1 and s2 and the third to fifth status information s3 to s5 generated from the plurality of peripheral devices 110 to 160, And the second power measurement values s1 and s2 and may store the generated monitoring information f in the external server 300. [

The WMU 200 can visualize the monitoring information f stored in the external server 300 and transmit it to the user terminal 350 when the user terminal 350 externally accesses the web.

The WMU 200 can store different protocols for communication between the plurality of peripheral devices 110 to 160 and the web. When a new peripheral device (not shown) is connected in addition to the plurality of peripheral devices 110 to 160, The protocol for the new peripheral device can be updated and stored.

2 is a control block diagram showing a control configuration of a Web Monitoring Unit (WMU) shown in FIG.

2, the WMU 200 includes an input module 210, a display module 220, a storage module 230, a DNS (Domain Name Server) 240, an information calculation module 250, a status diagnosis module 260 And a control module 270.

The input module 210 may input a plurality of commands.

The display module 220 may display information under the control of the control module 250 in response to a command input from the input module 210. [ The display module 220 may display the monitoring information (f) mentioned in FIG. 1 under the control of the control module 250 when a display command among a plurality of commands is inputted, but is not limited thereto.

The storage module 230 may store different protocols for communication between the plurality of peripherals 110-160 and the external server 300 or the web.

The DNS module 240 may convert the domain name input from the user terminal 300 into an IP address so that the user terminal 300 is connected to the web.

The information calculation module 250 calculates a first power amount a1 based on the first power measurement value s1 and a second power amount a2 based on the second power measurement value s2, The second power amounts a1 and a2 are compared with each other to calculate the power efficiency, the surface temperature corresponding to the temperature value included in the fifth state information s5, and the state value a3 ) Can be calculated.

Here, the first power amount a1 may be an average value of the first power measurement value s1 measured for a set time, but is not limited thereto.

Also, the second power amount a2 may be an average value of the second power measurement value s2 measured during the set time, and is not limited thereto.

The state value a3 may include the surface temperature and the solar radiation amount, and may be an average value of the temperature value and the solar radiation amount value, but is not limited thereto.

The state diagnosis module 260 may calculate the state of the plurality of solar modules according to whether the first power amount a1 belongs to the surface temperature included in the state value a3 and the standard production power amount range set according to the solar radiation amount The first diagnosis information f1 and the first and second power quantities a1 and a2 are compared with each other to determine whether or not the loss power amount lost during power conversion in the inverter apparatus 130 falls within the set reference loss power amount range. It is possible to generate the second diagnostic information f2 diagnosing the state of the first diagnostic information 130. [

Here, the reference production electric energy amount range may indicate a difference between the surface temperature and the set reference temperature, and a maximum electric energy amount and a minimum electric energy amount calculated based on the reference current and the voltage set according to the radiation amount.

For example, it will be described with reference to FIG. 3 and FIG.

FIG. 3 is a graph showing a current and voltage characteristic curve according to a change in irradiation amount, and FIG. 4 is a graph showing current and voltage characteristic curves according to surface temperature changes of a plurality of solar modules.

FIG. 3 shows the current and voltage characteristics according to the irradiation dose when the surface temperature of the plurality of solar modules is 25 degrees.

Referring to FIG. 3, it can be seen that the current and the voltage become larger as the solar radiation amount is higher and the current and voltage characteristics are higher. However, the current and voltage characteristics show that the current approaches 0A when the voltage is 45V.

Also, referring to FIG. 4, the current and voltage characteristics are kept constant according to the surface temperature, but the lower the surface temperature, the more the difference in voltage characteristics may occur.

That is, based on the current and voltage characteristic curves shown in FIGS. 3 and 4, the state diagnosis module 260 may calculate the first power amount a1 every 1 degree if the surface temperature is higher than the reference temperature, Is 0.4%, and if the surface temperature is lower than the reference temperature, the standard production power range in which the first power amount (a1) is increased by 0.4% is extracted for every degree to determine whether the first power amount (a1) Can be diagnosed.

For example, when the reference temperature is 25 degrees and the surface temperature is 60 degrees, the state diagnostic module 260 can calculate the standard production power range for the first power amount a1 as follows.

Standard production power range = (reference temperature - surface temperature) * multiple (0.4%)

Therefore, when the value calculated by (25 - 60) * (0.4%) is -14%, the standard production power range is the maximum power amount by which the reference power amount with respect to the first power amount a1 is increased by 14% To -14% of the minimum power consumption can be applied.

In this manner, if the first power amount a1 is not within the maximum power amount and the minimum power amount range, the state diagnostic module 260 may generate first diagnosis information (for example, f1 < / RTI >

The state diagnostic module 260 can generate second diagnostic information f1 indicating that the plurality of solar modules are in a normal state when the first power amount a1 is within the maximum power amount and the minimum power amount range.

The state diagnostic module 260 generates second diagnostic information f2 indicating that the inverter device 130 is in a normal state when the loss power amount falls within the reference loss power amount range, It is possible to generate the second diagnostic information f2 indicating that the inverter device 130 is replaced or abnormal.

The control module 270 controls the first and second power amounts a1 and a2, the third and fourth state information s3 and s4, the state value a3, and the first and second diagnostic information f1 and f2, May be stored in the external server 300 at predetermined time intervals.

The control module 270 can visualize the monitoring information f stored in the external server 300 and transmit the visualized information to the user terminal 350 when the user terminal 350 accesses the web via the DNS module 240. [

The control module 270 may update the protocol for the new peripheral device and store it in the storage module 230 when a new peripheral device is connected in addition to the plurality of peripheral devices 110 to 160. [

The control module 270 may display the first and second diagnostic information f1 and f2 on the display module 220 while the user terminal 350 is not connected to the web.

That is, when the diagnosis information a6 indicates that the solar cell apparatus 110 is in an abnormal state or a replacement state, the control module 270 controls the display module 220 to display an inspection request for the solar cell apparatus 110 .

The control module 270 generates the first and second power amounts a1 and a2, the third and fourth state information s3 and s4, the state value a3, and the first and second power amounts a1 and a2 in accordance with an instruction input from the input module 210. [ And the second diagnostic information f1 and f2 may be visualized as a report type so as to be displayed on the display module 220. [

The control module 270 calculates the amount of change in the surface temperature and the solar radiation amount, calculates an expected amount of power for the DC power according to the amount of change, and transmits the estimated amount of power to the user terminal 250 or the display module 220 But is not limited thereto.

5 is a flowchart illustrating an operation method of the renewable energy monitoring system according to the present invention.

FIG. 5 shows a method of storing monitoring information (f) from the WMU 200 of the renewable energy monitoring system to the external server 300.

5, the WMU 200 of the renewable energy monitoring system includes a connection unit 120, an inverter unit 130, an air circuit breaker 140, a VCB (Vaccum curcuit breaker) 150, The first and second power measurement values s1 and s2 and the third through fifth status information s1 through s5 from the device 160 at step S410.

The WMU 200 can calculate the first and second amounts of power a1 and a2 and the state value a3 based on the first and second power measurement values s1 and s2 and the fifth state information s5 (S420).

That is, the information calculation module 250 included in the WMU 200 calculates the first power measurement value s1 based on the first power measurement amount a1 and the second power measurement value s2 based on the first power measurement value s1. The second power amount a2 and the first and second power amounts a1 and a2 are compared with each other to calculate the power efficiency, the surface temperature corresponding to the temperature value included in the fifth state information s5, The state value a3 including the solar radiation amount can be calculated.

The state diagnostic module 260 of the WMU 200 can determine whether the first power amount a1 belongs to the surface temperature included in the state value a3 and the standard production power amount range set according to the solar radiation amount S430).

The state diagnostic module 260 generates first diagnostic information f1 indicating that the plurality of solar modules are in a normal state when the first power amount a1 is within the standard production power range at step S440, the first diagnostic information f1 indicating that the plurality of solar modules is in the replacement state or the abnormal state can be generated (S450)

The state diagnostic module 260 of the WMU 200 compares the first and second power quantities a1 and a2 and determines whether the loss power loss in the inverter device 130 is within the set reference loss power amount range (S460).

The state diagnostic module 260 generates second diagnostic information f2 indicating that the inverter device 130 is in a steady state when the lost power amount falls within the reference loss power amount range at step S470, If it is not within the power amount range, the second diagnosis information f2 indicating that the inverter device 130 is in the replacement state or the abnormal state can be generated (S480)

The WMU 200 includes first and second power amounts a1 and a2, third and fourth status information s3 and s4, a status value a3 and first and second diagnostic information f1 and f2 The monitoring information f may be stored in the external server 300 and displayed on the display module 220 (S490).

6 is a flowchart illustrating an operation method of the renewable energy monitoring system according to the present invention.

6 shows an operation method of the WMU 200 when the user terminal 350 accesses the web through the WMU 200 of the renewable energy monitoring system.

Referring to FIG. 6, the WMU 200 of the new and renewed energy monitoring system can determine whether to access the web through the DNS (Domain Name Server) 240 of the user terminal 350 (S510).

If the user terminal 350 does not access the web, the WMU 200 can continuously perform the step S410 shown in FIG. 5.

The WMU 200 can request and receive the monitoring information f stored in the external server 300 when the user terminal 350 accesses the web at step S520.

Then, the WMU 200 can transmit the monitoring information f to the user terminal 350 (S530).

The features, structures, effects and the like described in the foregoing embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

Claims (5)

A photovoltaic device including a plurality of photovoltaic modules for converting light into direct current power;
A connection half device for outputting a first power measurement value obtained by measuring the DC power when the DC power is input;
An inverter for converting the DC power input through the connection unit into AC power and outputting the AC power to the outside and outputting a second power measurement value obtained by measuring the AC power;
A meteorological measurement device for measuring and outputting a solar radiation value corresponding to a temperature value and a solar radiation amount corresponding to a surface temperature of the plurality of solar modules; And
And a WMU (Web Monitoring Unit) for generating monitoring information based on the first and second power measurement values, the temperature value, and the insolation value and storing the generated monitoring information in an external server. The method according to claim 1,
The WMU,
A DNS (Domain Name Server) module for connecting the user terminal to a web corresponding to the web access request when a web access request is input from an external user terminal;
A first power amount based on the first power measurement value, a second power amount based on the second power measurement value, a power efficiency by comparing the first and second power amounts with each other, An information calculation module for calculating the surface temperature and the irradiation dose corresponding to the irradiation value;
Comparing the first diagnostic information and the first and second power quantities diagnosed with the state of the plurality of solar modules according to whether the first power amount belongs to the standard production power range set according to the surface temperature and the solar radiation amount, A state diagnostic module that generates second diagnostic information that diagnoses the state of the inverter device according to whether a loss power amount lost in power conversion in the inverter device falls within a set reference loss power amount range; And
The monitoring information including the first and second power amounts, the power efficiency, the surface temperature, the solar radiation amount, and the first and second diagnostic information is stored in the external server, and when the user terminal accesses the web, And a control module for visualizing the monitoring information stored in an external server and transmitting the visualized information to the user terminal. 3. The method of claim 2,
The reference production power range may be, for example,
A difference temperature obtained by comparing the surface temperature with a set reference temperature, and a maximum power amount and a minimum power amount calculated based on the reference current and the reference voltage set according to the irradiation amount,
Further comprising at least one of an ACB (Air Circuit Breaker) and a VCB (Vaccum curcuit breaker) for supplying or blocking the AC power output from the inverter module to the outside. The method of claim 3,
The condition diagnosis module includes:
If the surface temperature is higher than the reference temperature, the first amount of power is reduced by 0.4%, and if the surface temperature is lower than the reference temperature, the first amount of power is reduced by 0.4 %, And diagnoses whether or not the first power amount belongs,
Generating the first diagnostic information indicating that each of the plurality of photovoltaic modules is in a normal state if the first amount of power is within the standard production power amount range and if the amount of power is not within the standard production power amount range, Generating the first diagnostic information indicating that at least one of the optical modules is in a replacement or abnormal state,
Generates the second diagnostic information indicating that the inverter apparatus is in a steady state if the loss power amount falls within the reference loss power amount range and if the loss amount is not within the reference loss power amount range, Wherein said second diagnosis information is generated by said second diagnosis information. 3. The method of claim 2,
The WMU,
An input module for inputting a display command; And
And a display module for displaying the monitoring information under the control of the control module when the display command is input,
The control module includes:
Wherein when the first diagnosis information indicating that the plurality of solar modules is in a replacement state or an abnormal state is input,
Wherein when the second diagnostic information indicating that the inverter device is replaced or an abnormal state is input, an inspection request notification of the inverter device is displayed on the display module,
Calculating a variation in the surface temperature and the solar radiation amount, calculating an estimated power amount for the DC power according to the variation amount, and transmitting the estimated power amount to the user terminal.

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