CN108352808A

CN108352808A - Monitoring arrangement, collection device, monitoring system and monitoring method

Info

Publication number: CN108352808A
Application number: CN201780003769.0A
Authority: CN
Inventors: 浅尾芳久; 松下友久; 后藤哲生; 下口刚史
Original assignee: Sumitomo Electric Industries Ltd
Current assignee: Sumitomo Electric Industries Ltd
Priority date: 2016-02-17
Filing date: 2017-01-11
Publication date: 2018-07-31
Anticipated expiration: 2037-01-11
Also published as: CN108352808B; JP6790706B2; JP2017147923A

Abstract

Monitoring arrangement involved by one mode of the disclosure is used in the solar power system that the output line from solar panel is electrically connected with power inverter, wherein has：Electric current measurement unit measures the electric current of the output line；Voltage measurement unit measures the voltage of the output line；Processing unit generates the measurement information of the measurement result based on the electric current measurement unit；And communication unit, send the measurement information generated by the processing unit, the current value of the output line when voltage of the output line is risen and reached specified value by the processing unit is kept as deviant, and the processing unit generates the measurement information for indicating that the current value obtained by the deviant is subtracted from the measurement result of the electric current measurement unit.

Description

Monitoring arrangement, collection device, monitoring system and monitoring method

Technical field

The present invention relates to monitoring arrangement, collection device, monitoring system and monitoring methods.

This application claims based on 2 months 2016 Japanese publication filed in 17 days the 2016-28167th and October 18 in 2016 The priority of Japanese publication the 2016-204119th filed in day, and quote whole notes recorded in the Japanese publication Carry content.

Background technology

In recent years, the technology for being monitored to solar power system is had developed.For example, in Japanese Unexamined Patent Publication A kind of solar power generation monitoring system is disclosed in 2012-205078 bulletins (patent document 1).

Existing technical literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2012-205078 bulletins

Invention content

In one embodiment, monitoring arrangement is used in the output line from solar panel and is filled with electrical power conversion Set the solar power system of electrical connection, wherein have：Electric current measurement unit measures the electric current of the output line；Voltage measures Portion measures the voltage of the output line；Processing unit generates the measurement information of the measurement result based on the electric current measurement unit；With And communication unit, send the measurement information generated by the processing unit.The processing unit rises the voltage of the output line And the current value of output line when having reached specified value is kept as deviant, the processing unit, which generates, to be indicated from institute The measurement result for stating electric current measurement unit subtracts the measurement information of the current value obtained by the deviant.

According to other embodiment, monitoring method is in output line and power inverter electricity from solar panel Monitoring method in the monitoring arrangement used in the solar power system of connection, wherein the monitoring arrangement has：Galvanometer Survey portion measures the electric current of the output line；And voltage measurement unit, measure the voltage of the output line.The monitoring method includes： The step of generating the measurement information of the measurement result based on the electric current measurement unit；Send the step of the measurement information generated Suddenly；And the current value of output line when rising the voltage of the output line and having reached specified value as deviant into The step of row is kept.The step of generating the measurement information includes generating to indicate to subtract from the measurement result of the electric current measurement unit The measurement information of current value obtained by the deviant.

According to other embodiment, monitoring arrangement is in output line and power inverter electricity from solar panel Monitoring arrangement in the monitoring system used in the solar power system of connection, wherein have：Electric current measurement unit measures institute State the electric current of output line；Processing unit generates the measurement information of the measurement result based on the electric current measurement unit；And communication unit, Send the measurement information generated by the processing unit.The voltage supplied from the output line is used as electricity by the monitoring arrangement Source voltage and acted.The monitoring arrangement is also equipped with the capacitor that can accumulate the electric energy supplied from the output line.Institute It states processing unit and obtains using the electric energy that the capacitor is accumulated the measurement as a result, according to described in acquired at the regulation moment Result is measured to obtain the deviant of the electric current of the output line and be kept, the processing unit is utilized in the monitoring arrangement In the state that the supply voltage is acted, generates and indicate to subtract obtained by the deviant from the measurement result newly obtained Current value the measurement information.

According to other embodiment, collection device is in output line and power inverter electricity from solar panel Collection device in the monitoring system used in the solar power system of connection, wherein have：Communication unit, from the monitoring Monitoring arrangement in system receives the measurement result of the electric current of the output line and the measurement result of voltage；And processing unit, it is raw At the measurement information of the measurement result based on the electric current.The voltage supplied from the output line is used as electricity by the monitoring arrangement Source voltage and acted.Measurement of the processing unit based on the electric current and the voltage is as a result, by the electricity of the output line The current value of drops and output line when having reached specified value is kept as deviant, and the processing unit generates table Show the measurement information that the current value obtained by the deviant is subtracted from other measurement results of the electric current.

According to other embodiment, monitoring system is used in the output line from solar panel and is filled with electrical power conversion Set the solar power system of electrical connection, wherein have：Monitoring arrangement, measures the electric current of the output line, and sends measurement knot Fruit；And collection device, receive the measurement result from the monitoring arrangement.The monitoring arrangement will be from the output line The voltage of supply is acted as supply voltage.The voltage supplied from system side is used as supply voltage by the collection device And acted, the deviant of the electric current of the output line is obtained according to the measurement result received and kept, It generates and indicates to subtract the measurement information of the current value obtained by the deviant from measurement result described in other.

According to other embodiment, monitoring method is in output line and power inverter electricity from solar panel Monitoring method in the monitoring arrangement used in the solar power system of connection, wherein the monitoring arrangement has：Galvanometer Survey portion measures the electric current of the output line；And capacitor, the electric energy supplied from the output line can be accumulated.The monitoring Device acts the voltage supplied from the output line as supply voltage.The monitoring method includes：At the regulation moment The measurement of the electric current measurement unit is obtained using the electric energy that the capacitor is accumulated as a result, according to the acquired measurement knot Fruit obtains the deviant of the electric current of the output line and the step of kept；Generate the measurement based on the electric current measurement unit As a result the step of measurement information；And the step of sending the measurement information generated.Generate the step of the measurement information Suddenly include：In the state that the monitoring arrangement is acted using the supply voltage, generates and indicate described in newly obtain Measurement result subtracts the measurement information of the current value obtained by the deviant.

According to other embodiment, monitoring method is the monitoring method in the collection device that monitoring system has, described Monitoring system is used in the solar power system that the output line from solar panel is electrically connected with power inverter, Wherein, the monitoring method includes：The measurement knot of the electric current of the output line is received from the monitoring arrangement in the monitoring system The step of measurement result of fruit and voltage；Measurement based on the electric current and the voltage is as a result, by the voltage of the output line The step of current value of output line when declining and having reached specified value is kept as deviant；And it generates and is based on The step of measurement information of the measurement result of the electric current.The voltage supplied from the output line is used as electricity by the monitoring arrangement Source voltage and acted.The step of generating the measurement information include：Generate other measurement results indicated from the electric current Subtract the measurement information of the current value obtained by the deviant.

According to other embodiment, monitoring method is in output line and power inverter electricity from solar panel Monitoring method in the monitoring system used in the solar power system of connection, wherein the monitoring system has monitoring dress It sets and collection device.The monitoring arrangement acts the voltage supplied from the output line as supply voltage.It is described Collection device acts the voltage supplied from system side as supply voltage.The monitoring method includes：The monitoring dress The step of setting the electric current for measuring the output line and sending measurement result；The collection device is received from the monitoring arrangement The step of measurement result；The collection device obtains the electric current of the output line according to the measurement result received Deviant and the step of kept；And the collection device generate indicate from measured described in other result subtract it is described partially The step of measurement information of current value obtained by shifting value.

Description of the drawings

Fig. 1 is the figure for the structure for indicating the solar power system involved by the first embodiment of the disclosure.

Fig. 2 is the figure for the structure for indicating the power collecting units involved by the first embodiment of the disclosure.

Fig. 3 is the figure for the structure for indicating the solar battery cell involved by the first embodiment of the disclosure.

Fig. 4 is the figure for the structure for indicating the monitoring system involved by the first embodiment of the disclosure.

Fig. 5 is the figure of the structure of the monitoring arrangement in the monitoring system indicated involved by the first embodiment of the disclosure.

Fig. 6 has been to determine when the monitoring arrangement involved by the first embodiment of the disclosure handles measurement result The flow chart of sequence of movement.

Fig. 7 has been to determine when the monitoring arrangement involved by the first embodiment of the disclosure handles measurement result The flow chart of the other examples of sequence of movement.

Fig. 8 is the figure of the structure of the monitoring arrangement in the monitoring system indicated involved by the second embodiment of the disclosure.

Fig. 9 has been to determine the sequence of movement when monitoring arrangement involved by the second embodiment of the disclosure obtains deviant Flow chart.

When Figure 10 has been to determine that the monitoring arrangement involved by the second embodiment of the disclosure handles measurement result Sequence of movement flow chart.

Figure 11 is the figure of the structure of the collection device in the monitoring system indicated involved by the third embodiment of the disclosure.

When Figure 12 has been to determine that the collection device involved by the third embodiment of the disclosure handles measurement result Sequence of movement flow chart.

Specific implementation mode

[problems to be solved by the invention]

In the monitoring arrangement for example using sensor to measure the output current of solar panel, according to sensor State and type etc., sometimes, even if having offset if the measured value of sensor under the no current state of not electric current flowing It is not zero.In such case it is possible to be difficult with the measurement result of sensor to detect the exception of solar panel.

Therefore, the disclosure in a certain respect in, can accurately and easily measure solar panel to provide one kind The monitoring arrangement of output current, collection device, one of for the purpose of monitoring system and monitoring method.

[invention effect]

According to the disclosure, the output current of solar panel can accurately and be easily measured.

[summary of embodiment]

First, it enumerates the content of embodiment of the present disclosure and illustrates.

Monitoring arrangement involved by an aspect of this disclosure is used in output line and electricity from solar panel The solar power system of power conversion device electrical connection, wherein have：Electric current measurement unit measures the electric current of the output line；Electricity Measurement unit is pressed, the voltage of the output line is measured；Processing unit generates the measurement letter of the measurement result based on the electric current measurement unit Breath；And communication unit, send the measurement information generated by the processing unit.The processing unit is by the voltage of the output line The current value of output line when rising and having reached specified value is kept as deviant, and the processing unit, which generates, to be indicated The measurement information of the current value obtained by the deviant is subtracted from the measurement result of the electric current measurement unit.

In this way, by being configured to the electric current of the output line measured in the timing of the size for the voltage for being conceived to output line Value is used as deviant, and the measurement can be suitably corrected in the case where the measured value of electric current measurement unit has offset Value.Therefore, solar panel can accurately and be easily measured in involved monitoring arrangement in one aspect of the present disclosure Output current.

Preferably, the power inverter is started when the voltage of the output line reaches starting voltage, the rule Definite value is less than the starting voltage.

In this way, by be configured to be conceived to " monitoring arrangement starts under the voltage smaller compared to power inverter " and " since the switch in power inverter prestart power inverter is off-state etc., so solar panel is defeated Go out for off-state, there is no electric current flowing in output line ", it accurately can detect no current state and obtain more suitably Deviant.

Preferably, the monitoring arrangement acts the voltage supplied from the output line as supply voltage, The processing unit updates the deviant when the monitoring arrangement starts every time.

With this configuration, it can be satisfactorily corrected because for example to applications such as the electric current measurement unit i.e. core segments of sensor The variation of magnetizing effect caused by electric current and the offset of the sensor changed.

Preferably, the communication unit sends the measurement information using the power line communication via the output line, The monitoring arrangement acts the voltage supplied from the output line as supply voltage.

With this configuration, it is effectively utilizing the output line from solar panel and is realizing the simplification of structure Structure in, can accurately and easily measure the output current of solar panel.

It is further preferred that in the solar power system, the output line from multiple solar panels respectively with Power inverter is electrically connected, described defeated when the voltage of the output line has reached the specified value smaller than the starting voltage First current value of outlet has reached electricity smaller than the starting voltage and bigger than the specified value with the voltage of the output line In the case of the difference deficiency specified value of second current value of output line when pressure, the processing unit is by first current value Or second current value is kept as the deviant.

In this way, by be configured to the electric current measured value to sensor is compared confirmed be not present voltage dependence On the basis of set deviant, such as be capable of detecting when " certain a string in the string that multiple solar panels are connected in series Do not rise with other strings compared to output voltage due to having occurred failure, the electric current inflow syndrome serial from other strings is without for nothing Current status ", therefore can prevent from inappropriate electric current measured value being used as deviant.

Monitoring method involved by other aspects of the disclosure is turned with electric power in the output line from solar panel Monitoring method in the monitoring arrangement used in the solar power system of changing device electrical connection, wherein the monitoring arrangement tool It is standby：Electric current measurement unit measures the electric current of the output line；And voltage measurement unit, measure the voltage of the output line.The monitoring Method includes：The step of generating the measurement information of the measurement result based on the electric current measurement unit；Send the meter generated The step of measurement information；And the current value of output line when rising the voltage of the output line and having reached specified value is made The step of being kept for deviant.The step of generating the measurement information includes generating the meter indicated from the electric current measurement unit Survey the measurement information that result subtracts the current value obtained by the deviant.

In this way, by being configured to the electric current of the output line measured in the timing of the size for the voltage for being conceived to output line Value is used as deviant, and the measurement can be suitably corrected in the case where the measured value of electric current measurement unit has offset Value.Therefore, in the monitoring method involved by the disclosure, the output electricity of solar panel can accurately and be easily measured Stream.

Monitoring arrangement involved by other aspects of the disclosure is turned with electric power in the output line from solar panel Monitoring arrangement in the monitoring system used in the solar power system of changing device electrical connection, wherein have：Electric current measures Portion measures the electric current of the output line；Processing unit generates the measurement information of the measurement result based on the electric current measurement unit；With And communication unit, send the measurement information generated by the processing unit.The monitoring arrangement will be supplied from the output line Voltage is acted as supply voltage.The monitoring arrangement, which is also equipped with, can accumulate the electric energy supplied from the output line Capacitor.The processing unit obtains the measurement as a result, according to institute at the regulation moment using the electric energy that the capacitor is accumulated The measurement result obtained obtains the deviant of the electric current of the output line and is kept, and the processing unit is in the prison In the state that view apparatus is acted using the supply voltage, generation indicates to subtract from the measurement result newly obtained described The measurement information of current value obtained by deviant.

In this way, by being configured to the current value of the output line obtained at the regulation moment being used as deviant, do not have to monitor defeated The voltage of outlet can obtain suitable deviant with simple processing.In addition, can be with independent of defeated by coming from The mode of size of voltage value of output line after the supply voltage of outlet and supply unit start more reliably obtains properly Deviant.Also, such deviant is used, it can in the case where the measured value of electric current measurement unit has offset Suitably correct the measured value.Therefore, it is possible to accurate and easily measurement solar panel output current.In addition, passing through It is configured to use capacitor, the voltage supplied from the output line from solar panel can be carried out as supply voltage Action, while the temporary action at night etc. can be realized in simple structure, therefore it is battery-mounted with such as monitoring arrangement Situation is compared, and the long lifetime of realization device and cost effective is capable of.

Collection device involved by other aspects of the disclosure is turned with electric power in the output line from solar panel Collection device in the monitoring system used in the solar power system of changing device electrical connection, wherein have：Communication unit, from Monitoring arrangement in the monitoring system receives the measurement result of the electric current of the output line and the measurement result of voltage；And place Reason portion generates the measurement information of the measurement result based on the electric current.The electricity that the monitoring arrangement will be supplied from the output line Pressure is acted as supply voltage, and measurement of the processing unit based on the electric current and the voltage is as a result, by described defeated The current value of the output line when voltage of outlet declines and reached specified value is kept as deviant, the processing Portion generates the measurement information for indicating that the current value obtained by the deviant is subtracted from other measurement results of the electric current.

In this way, by being configured to be substituted in the monitoring arrangement for starting and stopping according to the generating state of solar panel Middle calculating deviant and deviant is calculated in collection device, can be set as only sending the letter of measurement result in monitoring arrangement Single structure, while can more reliably obtain suitable deviant.In addition, by the way that be configured to will be in the electricity for being conceived to output line The current value for the output line that the timing of the size of pressure measures is used as deviant, even if the measured value in monitoring arrangement has offset In the case of also can suitably correct the measured value.Therefore, it is possible to accurate and easily measurement solar panel output Electric current.In addition, it is battery-mounted due to not having to, the voltage supplied from the output line from solar panel can be used as power supply Voltage and acted, therefore compared with the battery-mounted situation of such as monitoring arrangement, be capable of realization device long lifetime and It is cost effective.

Monitoring system involved by other aspects of the disclosure is used in output line and electricity from solar panel The solar power system of power conversion device electrical connection, wherein have：Monitoring arrangement measures the electric current of the output line, concurrently Send measurement result；And collection device, receive the measurement result from the monitoring arrangement.The monitoring arrangement will be from institute The voltage for stating output line supply is acted as supply voltage.The voltage supplied from system side is used as by the collection device Supply voltage and acted, gone forward side by side according to the measurement result received to obtain the deviant of the electric current of the output line Row is kept, and is generated and is indicated to subtract the measurement information of the current value obtained by the deviant from measurement result described in other.

In this way, by being configured to be substituted in the monitoring arrangement for starting and stopping according to the generating state of solar panel It is middle to calculate deviant and be used as the voltage supplied from system side to calculate deviant in the collection device of supply voltage, Neng Gou It is set as only sending the simple structure of measurement result in monitoring arrangement, while can more reliably obtain suitable deviant. Also, such deviant is used, can suitably be corrected in the case where the measured value of monitoring arrangement has offset The measured value.Therefore, it is possible to accurate and easily measurement solar panel output current.In addition, due in monitoring arrangement In do not have to it is battery-mounted, can will from from solar panel output line supply voltage make monitoring as supply voltage Device action, therefore compared with the battery-mounted situation of such as monitoring arrangement, it is capable of the long lifetime and low cost of realization device Change.

Monitoring method involved by other aspects of the disclosure is turned with electric power in the output line from solar panel Monitoring method in the monitoring arrangement used in the solar power system of changing device electrical connection, wherein the monitoring arrangement tool It is standby：Electric current measurement unit measures the electric current of the output line；And capacitor, the electric energy supplied from the output line can be accumulated. The monitoring arrangement acts the voltage supplied from the output line as supply voltage.The monitoring method includes： The regulation moment obtains the measurement of the electric current measurement unit using the electric energy that the capacitor is accumulated as a result, according to acquired institute Measurement result is stated to obtain the deviant of the electric current of the output line and the step of kept；It generates and is measured based on the electric current The step of measurement information of the measurement result in portion；And the step of sending the measurement information generated.Generate the measurement The step of information includes：In the state that the monitoring arrangement is acted using the supply voltage, generates and indicate to take from newly The measurement result obtained subtracts the measurement information of the current value obtained by the deviant.

In this way, by being configured to the current value of the output line obtained at the regulation moment being used as deviant, do not have to monitor defeated The voltage of outlet can obtain deviant appropriate with simple processing.In addition, can be with independent of in monitoring arrangement profit It is more reliably obtained with the mode of the size of the voltage value of the output line after the line-voltage start of output line appropriate Deviant.Also, such deviant is used, can be fitted in the case where the measured value of electric current measurement unit has offset Locality corrects the measured value.Therefore, it is possible to accurate and easily measurement solar panel output current.In addition, passing through structure It, can be by the voltage supplied from the output line from solar panel as supply voltage and into action as using capacitor Make, while can realize the temporary action at night etc. in simple structure, therefore the feelings battery-mounted with such as monitoring arrangement Condition is compared, and the long lifetime of realization device and cost effective is capable of.

Monitoring method involved by other aspects of the disclosure is the monitoring side in the collection device that monitoring system has Method, the monitoring system are used in the solar energy hair that the output line from solar panel is electrically connected with power inverter Electric system, wherein the monitoring method includes：The electric current of the output line is received from the monitoring arrangement in the monitoring system The step of measurement result and the measurement result of voltage；Measurement based on the electric current and the voltage is as a result, by the output line Voltage decline and the current value of output line when having reached specified value the step of being kept as deviant；And it is raw At the measurement result based on the electric current measurement information the step of.The voltage that the monitoring arrangement will be supplied from the output line It is acted as supply voltage.The step of generating the measurement information includes generating other measurements indicated from the electric current As a result the measurement information of the current value obtained by the deviant is subtracted.

Monitoring method involved by other aspects of the disclosure is turned with electric power in the output line from solar panel Monitoring method in the monitoring system used in the solar power system of changing device electrical connection, wherein the monitoring system tool Standby monitoring arrangement and collection device.The monitoring arrangement is by the voltage supplied from the output line as supply voltage and into action Make.The collection device acts the voltage supplied from system side as supply voltage.The monitoring method includes：It is described The step of monitoring arrangement measures the electric current of the output line and sends measurement result；The collection device, which receives, comes from the monitoring The step of measurement result of device；The collection device obtains the output line according to the measurement result received Electric current deviant and the step of kept；And the collection device generates and indicates to subtract from measurement result described in other The step of measurement information of current value obtained by the deviant.

[detailed embodiment of the present application]

Hereinafter, being illustrated to embodiment of the present disclosure using attached drawing.In addition, to identically or comparably part is marked in figure Identical label is noted without its explanation is repeated.Alternatively, it is also possible to which at least part of the embodiment of following record is arbitrary Combination.

[structure of solar power system 401]

Referring to Fig.1, solar power system 401 has four power collecting units 60 and PCS (Power Conditioning System, power regulating system) 8.PCS8 includes copper bar 7 and power conversion unit 9.

In Fig. 1, four power collecting units 60 are typically illustrated, but more or less current collection list can also be set Member 60.

With reference to Fig. 2, power collecting units 60 include four solar battery cells 75 and copper bar 72.

In fig. 2, four solar battery cells 75 are typically illustrated, but can also be arranged more or less Solar battery cell 75.

With reference to Fig. 3, solar battery cell 75 includes four solar panels 78 and copper bar 77.

In figure 3, four solar panels 78 are typically illustrated, but can also be arranged it is more or it is less too Positive energy solar panel 78.

In solar power system 401, output line, that is, power line from multiple solar panels 78 respectively with PCS8 is electrically connected.

More specifically, the output line 1 of solar panel 78 have the first end that is connect with solar panel 78 and The second end being connect with copper bar 77.Each output line 1 comes together in output line 5 via copper bar 77.Copper bar 77 is for example set to connection The inside of case 76.

Solar panel 78 is converted to direct current power when receiving sunlight, by the energy of the sunlight received, And the direct current power of conversion is exported to output line 1.Here, solar panel 78 is, for example, multiple solar panel series connection The string being formed by connecting.

With reference to Fig. 2 and Fig. 3, output line 5 has first connected with the copper bar 77 in corresponding solar battery cell 75 End and the second end being connect with copper bar 72.Each output line 5 comes together in output line 2 via copper bar 72.Copper bar 72 is for example set to The inside of collector box 71.

Referring again to Fig. 1, in solar power system 401, as described above, from each of multiple solar panels 78 Output line 1 comes together in output line 5, and each output line 5 comes together in output line 2, each output line 2 and an example as power inverter PCS8 electrical connection.

More specifically, each output line 2 have in corresponding power collecting units 60 copper bar 72 connect first end and with The second end that copper bar 7 connects.In PCS8, inner wire 3 has the first end being connect with copper bar 7 and is connect with power conversion unit 9 Second end.

PCS8 is for example set to the inside of container 6.In PCS8, power conversion unit 9 is for example when via output line 1, copper bar 77, output line 5, copper bar 72, output line 2, copper bar 7 and inner wire 3 and receive in each solar panel 78 generate electricity generate Direct current power when, the direct current power received is converted into AC power and to system output.PCS8 monitors the electricity of output line 2 Pressure is started when the voltage of output line 2 reaches defined starting voltage, that is, starts electrical power conversion action.Thereby, it is possible to make PCS8 The voltage reduction that electric current when starting pulls in caused output line 2 converges on allowable range.PCS8 for example makes in prestart defeated Outlet 2 is off-state.

[structure of monitoring system 301]

With reference to Fig. 4, monitoring system 301 has four monitoring arrangements 101 and collection device 151.

In Fig. 4, four monitoring arrangements 101 being arranged in correspondence with a power collecting units 60 are typically illustrated, but More or less monitoring arrangement 101 can also be set.

Monitoring system 301 is used in solar power system 401.In monitoring system 301, the monitoring as handset fills The information of the sensor in 101 is set regularly or aperiodically to the transmission of collection device 151 as machine tool.

Monitoring arrangement 101 is for example set to connecting box 76.More specifically, monitoring arrangement 101 and four solar cells There are four unit 75 is respectively correspondingly arranged.Each monitoring arrangement 101 is for example electrically connected with corresponding output line 1 and output line 5.

Monitoring arrangement 101 measures the electric current of each output line 1 in corresponding solar battery cell 75 using sensor.

Collection device 151 is for example set near PCS8.More specifically, collection device 151 is for example in container 6 Portion is arranged in correspondence with PCS8, and is electrically connected with copper bar 7 through signal wire 46.In addition, collection device 151 can also be set to container 6 outside.

Monitoring arrangement 101 and collection device 151 via output line 2,5 by carrying out power line communication (PLC：Power Line Communication) carry out sent-received message.

More specifically, each monitoring arrangement 101 sends the measurement letter of the measurement result for the electric current for indicating corresponding output line 1 Breath.Collection device 151 collects the measurement result of each monitoring arrangement 101.

[structure of monitoring arrangement 101]

Fig. 5 is the figure of the structure of the monitoring arrangement in the monitoring system indicated involved by the first embodiment of the disclosure. In Figure 5, output line 1, output line 5 and copper bar 77 is shown in more detail.

With reference to Fig. 5, output line 1 includes side of the positive electrode output line 1p and negative side output line 1n.Output line 5 includes that side of the positive electrode is defeated Outlet 5p and negative side output line 5n.Copper bar 77 includes side of the positive electrode copper bar 77p and negative side copper bar 77n.

Although it is not shown, but the copper bar 72 in collector box shown in Fig. 2 71 and side of the positive electrode output line 5p and negative side export Line 5n includes respectively correspondingly side of the positive electrode copper bar 72p and negative side copper bar 72n.

Side of the positive electrode output line 1p have the first end connected with corresponding solar panel 78 and with side of the positive electrode copper bar 77p The second end of connection.Negative side output line 1n have the first end connected with corresponding solar panel 78 and with negative side copper The second end of 77n connections.

Side of the positive electrode output line 5p have with the side of the positive electrode copper bar 77p first ends connecting and with the side of the positive electrode copper in collector box 71 The second end of 72p connections.Negative side output line 5n have with the negative side copper bar 77n first ends connecting and in collector box 71 The 72n connections of negative side copper bar second end.

Monitoring arrangement 101 has 15, four processing unit 12, voltage measurement unit 13, communication unit 14, storage part sensors 16. In addition, monitoring arrangement 101 can also have more or less sensor 16 according to the quantity of output line 1.

Monitoring arrangement 101 is for example set near solar panel 78.Specifically, monitoring arrangement 101 is for example set It is placed in the inside of the connecting box 76 equipped with the copper bar 77 being connect with the output line 1 of measurement object.In addition, monitoring arrangement 101 also may be used To be set to the outside of connecting box 76.

Monitoring arrangement 101 is for example respectively via side of the positive electrode power cord 26n and negative side power cord 26p and side of the positive electrode output line 5p and the 5n electrical connections of negative side output line.Hereinafter, side of the positive electrode power cord 26n and negative side power cord 26p is also individually referred to as electricity Source line 26.

Monitoring arrangement 101 carries out the voltage supplied from the output line from solar panel 78 as supply voltage Action.More specifically, monitoring arrangement 101 is for example acted using the electric power received from output line 5 via power cord 26.

The sensor 16 of an example as electric current measurement unit measures the electric current of output line 1.More specifically, sensor 16 The current probe of Hall element type for measuring electric current in this way, connects using from the power circuit (not shown) of monitoring arrangement 101 The electric current that the electric power being subject to flows to measure the output line 1 by measurement object.

More specifically, four sensors 16 are for example when the supply for receiving electric power from the power circuit of monitoring arrangement 101 When, the electric current in corresponding negative side output line 1n is measured respectively, and will indicate that the signal of measurement result is exported to processing unit 12. In addition, four sensors 16 can also measure the electric current flowed by side of the positive electrode output line 1p.

Voltage measurement unit 13 measures the voltage of the output line from solar panel 78.More specifically, voltage measures Work of the portion 13 for example to being inputted from the terminal (not shown) being separately connected with side of the positive electrode power cord 26n and negative side power cord 26p For analog signal voltage signal implement equalization, filtering etc. signal processings be converted to digital signal.Voltage measurement unit 13 is logical It crosses and voltage value is calculated according to the sample waveform of the specified time limit of digital signal, to measure the voltage of power cord 26.Voltage measurement unit 13 will indicate that the signal of measurement result is exported to processing unit 12.

Processing unit 12 is configured to include CPU (Central Processing Unit, central processing unit), MPU (Micro Processing Unit, microprocessing unit) or FPGA (Field Programmable Gate Array, field-programmable Gate array) etc. and the RAM (Random Access Memory, random access memory) of memory etc. as operation.It is logical The readings such as the CPU are crossed to be stored in the program of the memory (not shown) such as RAM, PRMO and in the memory of operation be unfolded, and And acted according to the program, to realize processing unit 12 by the CPU etc..That is, processing unit 12 is regularly or aperiodically Generate the measurement information of the measurement result based on sensor 16.Specifically, processing unit 12 will be to receiving from each sensor 16 Signal the signal obtained from signal processings such as average and filter and be converted to digital signal, such as by the digital signal institute The measured value shown is saved in storage part 15.Storage part 15 stores measured value etc..Storage part 15 is, for example, RAM, EEPROM (Electrically Erasable Programmable Read Only Memory, Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read Only Memory, programmable read only memory) etc..Also, processing unit 12 is generated to guarantor The measured value for being stored in storage part 15 is added obtained from the ID of corresponding sensor 16 and the ID of the monitoring arrangement of itself 101 and is measured Information, and the ID of the measurement information of generation and collection device 151 as sending object is exported to communication unit 14.

Communication unit 14 can carry out sent-received message via output line 2,5.Communication unit 14 is, for example, PLC (Power Line Communication, power line communication) module.Specifically, communication unit 14 is filled through power cord 26 and output line 2,5 with collection Set 151 carry out power line communications.Communication unit 14 will be sent from the measurement information that processing unit 12 receives to collection device 151.

Referring again to Fig. 4, collection device 151 is via output line 2,5, copper bar 7,72 and signal wire 46 from multiple monitoring arrangements 101 receive measurement information.

Collection device 151 from a certain monitoring arrangement 101 for example when receiving measurement information, the measurement information that will receive It is corresponding with the ID for the monitoring arrangement 101 for being contained in measurement information foundation and be saved in storage part (not shown).

Collection device 151 for example according to Ethernet (registered trademark) standard come with 161 sent-received message of terminal installation.

For collection device 151 for example when receiving measurement information requirement from terminal installation 161, acquirement is stored in storage part 15 Measurement information and corresponding monitoring arrangement 101 ID and to terminal installation 161 send.

[action]

Each device in monitoring system 301 has computer.The arithmetic processing sections such as the CPU in the computer are from (not shown) Memory reads some or all programs of each step comprising following below scheme figure and execution respectively.Multiple device Program is able to install from outside.The program of multiple device is circulated with the state for being stored in recording medium respectively.

The current value of output line when the voltage of output line is risen and reached specified value by processing unit 12 is as deviant It is kept.Also, processing unit 12 generates the meter for indicating that the current value obtained by deviant is subtracted from the measurement result of sensor 16 Measurement information.

More specifically, with reference to Fig. 6, first, when the supply by receiving supply voltage via power cord 26 from output line 1 And monitoring arrangement 101 starts (step S1) after being started to processing unit 12, processing unit 12 uses the measurement knot of voltage measurement unit 13 Fruit proceeds by the voltage i.e. monitoring (step S2) of the voltage of power cord 26 of output line 2.

When the voltage of power cord 26 reaches specified value (being yes in step s 2), processing unit 12 obtains sensor at this time 16 measurement result, that is, measured value (step S3), and measured value, that is, current value of acquirement is stored in storage part as deviant 15.In addition, processing unit 12 is configured to reach the voltage of power cord 26 specified value and is responded and newly obtain sensor 16 Measured value.Alternatively, processing unit 12 can also be configured to the measured value of sensor 16 being saved in storage part 15 at any time, and in electricity The voltage of source line 26 has reached the timing of specified value from the newest measured value (step S4) of the acquirement sensor 16 of storage part 15.

Then, processing unit 12 newly receives measurement as a result, and obtaining deviant (step S5) from storage part 15 from sensor 16. Processing unit 12 generate to from the measurement result i.e. measured value subtract the value obtained by deviant add corresponding sensor 16 ID and Measurement information obtained from the ID of the monitoring arrangement 101 of itself, and the measurement information of generation is filled via communication unit 14 to collection Set 151 transmissions (step S6).

Later, processing unit 12 is carried out using deviant whenever receiving new measurement result from sensor 16 to measurement The transmission (step S5 and S6) of the correction of value and the measured value after correction to collection device 151.

In processing shown in Fig. 6, for example, above-mentioned specified value is less than the starting voltage of PCS8.In addition, for example, processing unit 12 update deviant when monitoring arrangement 101 starts every time.

More specifically, such as whenever monitoring arrangement 101 stops at night and when with rising with the sun dynamic, processing unit 12 Update into row offset value is handled.

That is, monitoring arrangement 101 carries out the action of (1) below (2).

(1) voltage of monitoring wire voltage, that is, output line 1, the measurement of the sensor 16 when by the low-voltages of PCS8 unstarts Value is stored as deviant, and subtracted from measured value later the correction process of the deviant.

(2) setting processing of the deviant is in the power activation of the associated monitoring arrangement 101 of the sunrise with every morning It carries out, to update deviant.

For example, in the PCS8 startings when the service voltage from output line 1 becomes near 300V, and monitoring arrangement 101 exists In the case of being started under service voltage near 100V, during the service voltage from output line 1 is 100V~300V, PCS8 is not acted.At this point, due to PCS8 switch for off-state etc. and the output of solar panel 78 be disconnect shape State does not have electric current flowing in output line 1.

Thus, for example above-mentioned specified value is set as 200V (that is, by the line voltage distribution i.e. measured value of the voltage of output line 2 Reach the electric current measured value of the sensor 16 under the timing of 200V as deviant) it is effective.

In addition, since the above-mentioned starting state every morning of monitoring arrangement 101 and PCS8 all occur, it can daily more New deviant.

Deviant it is possible that because for example to the magnetizing effect caused by the electric current of the applications such as the core segment of sensor 16 Variation and change, therefore as described above daily update deviant be effective.

The measured value 1 of output line when the voltage of output line has reached the above-mentioned specified value smaller than the starting voltage of PCS8 When the voltage of (the first current value) and output line has reached voltage smaller than the starting voltage of PCS8 and bigger than above-mentioned specified value In the case of the difference deficiency specified value of the measured value 2 (the second current value) of output line, processing unit 12 is by the first current value or Two current values are kept as deviant.

More specifically, with reference to Fig. 7, first, when the supply by receiving supply voltage via power cord 26 from output line 1 And monitoring arrangement 101 starts (step S11) after being started to processing unit 12, processing unit 12 uses the measurement knot of voltage measurement unit 13 Fruit proceeds by the voltage i.e. monitoring (step S12) of the voltage of power cord 26 of output line 2.

Then, when the voltage of power cord 26 reaches specified value 1 (being yes in step S12), processing unit 12 obtains at this time Measurement result, that is, measured value 1 of sensor 16, and be that the first current value is stored in 15 (step of storage part by the measured value of acquirement 1 S13)。

Then, (being yes in step S14), processing unit when the voltage of power cord 26 reaches than 1 big specified value 2 of specified value 12 obtain the measurement result, that is, measured value 2 namely the second current value of sensor 16 at this time, and the measured value of acquirement 2 is stored in Storage part 15 (step S15).

In addition, processing unit 12 is configured to reach the voltage of power cord 26 2 sound of specified value 1 or specified value Ying Erxin obtains the measured value of sensor 16.Alternatively, processing unit 12 can also be configured at any time protect the measured value of sensor 16 It is stored to storage part 15, and the timing for reaching in the voltage of power cord 26 specified value 1 or specified value 2 obtains sensing from storage part 15 The newest measured value of device 16.

Then, processing unit 12 obtains measured value 1 and measured value 2 from storage part 15, and calculates the absolute value of the difference (step of the two Rapid S16).

In the case where the absolute value of calculating is specified value or more (being no in step S16), the output of processing unit 12 indicates different Normal alarm (step S20).

On the other hand, in the case of the absolute value deficiency specified value of calculating (being yes in step S16), processing unit 12 will be counted Measured value 1 or measured value 2 are stored in storage part 15 (step S17) as deviant.

Then, processing unit 12 newly receives measurement result (step S18) from sensor 16.Processing unit 12 is obtained from storage part 15 Deviant, and generate to from the measurement result i.e. measured value subtract the value obtained by deviant add corresponding sensor 16 ID and Measurement information obtained from the ID of the monitoring arrangement 101 of itself.Then, processing unit 12 believes the measurement of generation via communication unit 14 It ceases to collection device 151 and sends (step S19).

Later, processing unit 12 is carried out using deviant whenever receiving new measurement result from sensor 16 to measurement The transmission (step S18 and S19) of the correction of value and the measured value after correction to collection device 151.

In processing shown in Fig. 7, monitoring arrangement 101 is in the starting voltage region below of PCS8 by line voltage distribution, that is, defeated The electric current measured value of sensor 16 under several points of the voltage of outlet 2 is compared, and confirmed electric current measured value and line electricity Deviant is set on the basis of the difference of pressure is unrelated and fixed.

For example, for the string that multiple solar panels are connected in series, have occurred for certain a string in multiple strings therefore In the case of barrier, output voltage does not rise compared with other strings, and the electric current from other strings is possible to flow into the string to break down. In this case, the magnitude of current of inflow changes according to the output voltage of the string to break down, is not fixed value.

Therefore, in the case where the electric current measured value of sensor 16 is not fixed value, it is possible to not be no current state, no It is suitble to the electric current measured value under the state being used as deviant.

Therefore, the electric current measured value of sensor is compared in the range that the prestarting voltages of PCS8 are such as 100V~300V And it confirmed that there is no setting deviant on the basis of voltage interdependence be effective.

In addition, processing unit 12, which can be directed to every output line 1, carries out Fig. 6 or processing shown in Fig. 7.

In addition, in the above example, the voltage handled by the monitoring arrangements such as output voltage of solar panel 78 101 is Positive voltage, but not limited to this.Monitoring arrangement 101 can also be handled negative voltage.That is, the disclosure can also apply to negative electricity The case where pressure.

In addition, in monitoring system involved by the first embodiment of the disclosure, monitoring arrangement 101 is configured to will always The voltage supplied from the output line of solar panel 78 is acted as supply voltage, but not limited to this.Monitoring arrangement 101 can also be configured to using for example being acted from the AC power that system side supplies.That is, as long as monitoring arrangement 101 exists The timing that the voltage of power cord 26 reaches above-mentioned specified value has started.

In addition, monitoring arrangement 101 is configured to send measurement information to collection device 151 using power line communication, but not It is limited to this.Monitoring arrangement 101 can also be configured to the communication using wireless communication etc. other than power line communications by measurement information to Collection device 151 is sent.

But by be configured to monitoring arrangement 101 using the power line communication via output line 2,5 by measurement information to receipts Acquisition means 151 are sent and by the voltage supplied from the output line from solar panel 78 as supply voltage and into action Make, the output line from solar panel 78 can be effectively utilized and realize the simplification of structure.

More specifically, a certain in multiple strings for example, for the string that multiple solar panels are connected in series In the case that deterioration has occurred in the solar panel of string, for example, according to other string compared with current value it is smaller and detect string It is abnormal, in addition, in the case where cable broken string etc. has occurred, the exception of string is detected as zero according to electric current.But if electric The measured value of flow sensor has offset, then can not carry out correct comparison or electric current will not become zero, thus be difficult to detect The exception of string.

Especially, in the structure that monitoring arrangement is acted using the generation power of solar panel, due to monitoring Device starts in the state that flowing has electric current, and therefore, it is difficult to the deviant of sensor is obtained under no current state.In this way Structure in the case of, need to cut off sensor from the output line of solar panel and measure deviant in advance, need to spend It takes time and energy.

In contrast, in the monitoring arrangement involved by the first embodiment of the disclosure, the measurement of sensor 16 is from too The electric current of the output line of positive energy solar panel 78.Voltage measurement unit 13 measures the voltage of the output line from solar panel 78. Processing unit 12 generates the measurement information of the measurement result based on sensor 16.Communication unit 14 sends the measurement generated by processing unit 12 Information.Here, the current value of the output line when voltage of output line is risen and reached specified value by processing unit 12 is as deviating Value is kept.Also, processing unit 12, which generates, to be indicated to subtract the current value obtained by deviant from the measurement result of sensor 16 Measurement information.

In this way, by being configured to the electric current of the output line measured in the timing of the size for the voltage for being conceived to output line Value is used as deviant, and the measured value can be suitably corrected in the case where the measured value of sensor has offset.

Therefore, it in the monitoring arrangement involved by the first embodiment of the disclosure, can accurately and easily measure too The output current of positive energy solar panel.

In addition, in monitoring system involved by the first embodiment of the disclosure, PCS8 is when coming from solar panel The voltage of 78 output line starts when reaching starting voltage.Also, in monitoring arrangement 101, above-mentioned specified value is less than PCS8's Starting voltage.

In this way, by be configured to be conceived to " monitoring arrangement 101 starts under the voltage smaller compared to PCS8 " and " due to It is that off-state etc. is exporting so the output of solar panel 78 is off-state in the switch of PCS8 prestarts PCS8 There is no electric current flowing in line ", it can accurately detect no current state and obtain more suitably deviant.

In addition, in monitoring arrangement involved by the first embodiment of the disclosure, processing unit 12 is every in monitoring arrangement 101 Deviant is updated when secondary starting.

With this configuration, it can be satisfactorily corrected caused by the electric current of application because of the core segment to sensor 16 Magnetizing effect variation and the offset of sensor 16 that changes.

In addition, the monitoring arrangement involved by the first embodiment of the disclosure is utilized via from solar panel 78 The power line communication of output line uses the voltage supplied from the output line from solar panel 78 to send measurement information Make supply voltage and is acted.

With this configuration, it is effectively utilizing the output line from solar panel 78 and is realizing the simple of structure In the structure of change, the accurate and easy measurement of the output current of solar panel 78 can be carried out.

In addition, in solar power system involved by the first embodiment of the disclosure, multiple solar-electricities are come from The output line of pond plate 78 is electrically connected with PCS8 respectively.Also, in monitoring arrangement 101, ratio is reached in the voltage of output line The first current value of output line and the voltage of output line when the small above-mentioned specified value of the starting voltage of PCS8, which have reached, compares PCS8 Starting voltage small and bigger than above-mentioned specified value voltage when output line the second current value difference deficiency specified value the case where Under, processing unit 12 keeps the first current value or the second current value as deviant.

In this way, by be configured to the electric current measured value to sensor is compared confirmed be not present voltage interdependence On the basis of set deviant, such as be capable of detecting when " certain a string in the string that multiple solar panels are connected in series Do not rise with other strings compared to output voltage due to having occurred failure, the electric current inflow syndrome serial from other strings is without for nothing Current status ", therefore can prevent from inappropriate electric current measured value being used as deviant.

In addition, in monitoring method involved by the first embodiment of the disclosure, first, monitoring arrangement 101 generates base In the measurement information of the measurement result of sensor 16.Then, monitoring arrangement 101 sends generated measurement information.By output line Voltage rise and the current value of output line when having reached specified value is kept as deviant.Then, monitoring arrangement 101 When generating measurement information, the measurement letter for indicating that the current value obtained by deviant is subtracted from the measurement result of sensor 16 is generated Breath.

Therefore, it in the monitoring method involved by the first embodiment of the disclosure, can accurately and easily measure too The output current of positive energy solar panel.

The calculating timing that present embodiment is related to the deviant compared with the monitoring system involved by first embodiment is different Monitoring system.It is identical as the monitoring system involved by first embodiment other than content described below.

With reference to Fig. 8, compared with the monitoring arrangement 101 involved by the second embodiment of the disclosure, monitoring arrangement 102 also has Standby timer 17 and capacitor 18.

Capacitor 18 can accumulate the electric energy supplied from the output line from solar panel 78.More specifically, electric Container 18 is, for example, the electrolytic capacitor that can accumulate the charge received from output line 5 via power cord 26.In solar cell In the state that plate 78 generates electricity, it is applied with the DC voltage of such as 1000V on the output line.

For timer 17 for example comprising counter, the count value of the counter is used as the current time in monitoring arrangement 102. Timer 17, which can use, for example accumulates electric energy in capacitor 18 and a direct acting.Timer 17 is when the regulation for becoming setting Processing unit 12 is announced the content to when the moment.

Processing unit 12 for example using information at the time of being received from collection device 151 via communication unit 14 come with collection device 151 obtain timing synchronization.More specifically, processing unit 12 corrects the count value of timer 17 by using time information, comes school Positive current time.

Processing unit 12 at the regulation moment for the supply for not receiving supply voltage from the output line from solar panel 78, The electric energy accumulated using capacitor 18 obtains measurement result.Also, processing unit 12 is obtained according to acquired measurement result The deviant of the electric current of the output line is simultaneously kept.

Also, processing unit 12 is in the state that monitoring arrangement 102 is acted by above-mentioned supply voltage, generate indicate from The measurement result newly obtained subtracts the measurement information of the current value obtained by deviant.

More specifically, with reference to Fig. 9, first, in the supply of the supply voltage from output line 1 stopping with sunset And for example stopped in the state of the action other than accepting the notice from timer 17 (being no in the step s 21), when From timer 17 receive at the time of becoming e.g. night the regulation moment this content notice when (in the step s 21 It is yes), processing unit 12 starts (step S22) using accumulation in the electric energy of capacitor 18.

Then, processing unit 12 obtains measurement result, that is, measured value (step S23) of sensor 16, is by the measured value of acquirement Current value is stored in storage part 15 as deviant.In addition, processing unit 12 is configured to receiving regulation from timer 17 The notice at moment is responded and is newly obtained the measured value of sensor 16.Alternatively, processing unit 12 can also be configured to sensor 16 measured value is saved in storage part 15 at any time, in the timing for receiving the notice at regulation moment from timer 17 from storage part 15 The newest measured value for obtaining sensor 16 is the measured value (step S24) acted before stopping at once.

Then, 12 stopping of processing unit acts, and waits until such as sunrise, that is, wait until by from output line 1 via Power cord 26 receive the supply of supply voltage and until monitoring arrangement 102 starts (step S25).

In addition, processing unit 12 can also be configured to will to start at the regulation moment and the current value and the defined threshold value that obtain into Row compares, and judges the acquirement failure of deviant based on comparative result.For example, being set in threshold value above-mentioned less than 1 ampere In the case that current value is several amperes, processing unit 12 is determined as the acquirement failure of deviant.In addition, the first embodiment party of the disclosure Monitoring arrangement involved by formula can also be configured to judge the acquirement failure of such deviant.

Referring to Fig.1 0, first, when by receiving the supply of supply voltage via power cord 26 by monitoring arrangement from output line 1 102 start, and after being started to processing unit 12 (step S31), processing unit 12 obtains deviant (step S32) from storage part 15.

Then, processing unit 12 receives measurement result (step S33) from sensor 16.Processing unit 12 generate to from the measurement As a result be measured value subtract the value obtained by deviant add the ID of corresponding sensor 16 and the ID of the monitoring arrangement of itself 102 and Obtained measurement information.Then, the measurement information of generation is sent (step by processing unit 12 via communication unit 14 to collection device 151 Rapid S34).

Later, processing unit 12 is carried out using deviant whenever receiving new measurement result from sensor 16 to measurement The transmission (step S33 and S34) of the correction of value and the measured value after correction to collection device 151.

As described above, in the monitoring arrangement 102 involved by the second embodiment of the disclosure, the measurement of sensor 16 comes From the electric current of the output line of solar panel 78.Processing unit 12 generates the measurement information of the measurement result based on sensor 16. Communication unit 14 sends the measurement information generated by processing unit 12.The voltage supplied from the output line is used as electricity by monitoring arrangement 102 Source voltage and acted.Capacitor 18 can accumulate the electric energy supplied from the output line.Processing unit 12 uses at the regulation moment Capacitor 18 accumulate electric energy come obtain measurement as a result, according to acquired measurement result come obtain the output line electric current it is inclined Shifting value is simultaneously kept.Also, processing unit 12 generates expression in the state that monitoring arrangement 102 is acted using supply voltage The measurement information of the current value obtained by deviant is subtracted from the measurement result newly obtained.

In addition, in monitoring method involved by the second embodiment of the disclosure, first, monitoring arrangement 102 is providing The electric energy that moment is accumulated using capacitor 18 measures to obtain as a result, being obtained from solar energy according to acquired measurement result The deviant of the electric current of the output line of solar panel 78 is simultaneously kept.Then, monitoring arrangement 102 generates the meter based on sensor 16 Survey the measurement information of result.Then, monitoring arrangement 102 sends generated measurement information.When generating the measurement information, monitoring Device 102 generates in the state that itself is acted using supply voltage and indicates to subtract offset from the measurement result newly obtained It is worth the measurement information of the current value of gained.

In this way, by being configured to the current value of the output line obtained at the regulation moment being used as deviant, do not have to monitor defeated The voltage of outlet can obtain suitable deviant with simple processing.In addition, can be with independent of by coming from output The mode of size of voltage value of output line after the supply voltage of line and monitoring arrangement 102 start more reliably obtains properly Deviant.Also, such deviant is used, it can be appropriate in the case where the measured value of sensor has offset Ground corrects the measured value.

Therefore, in the monitoring arrangement involved by the second embodiment of the disclosure and monitoring method, can be accurate and hold It changes places and measures the output current of solar panel.

In addition, by being configured to use capacitor 18, will can be supplied on one side from the output line from solar panel 78 The voltage given is acted as supply voltage, on one side the temporary action at realization night etc. in simple structure, therefore with Such as the battery-mounted situation of monitoring arrangement 102 is compared, and the long lifetime of realization device and cost effective is capable of.

Other structures and action are identical as the monitoring system involved by first embodiment, therefore are not repeated herein in detail It describes in detail bright.

Present embodiment is related to the collection device compared with the monitoring system involved by first embodiment and calculates deviant Monitoring system.It is identical as the monitoring system involved by first embodiment other than content described below.

In monitoring system involved by the third embodiment of the disclosure, monitoring arrangement 101 is without Fig. 6 and Fig. 7 institutes Show such correction using deviant to measured value, and by the measurement result of the electric current of output line 1 and voltage to collection device 151 send.The measurement result includes the output for example measured respectively by sensor 16 and voltage measurement unit 13 in identical timing The electric current and voltage of line 1.In addition, being for example attached with the sensing corresponding with measured value in monitoring arrangement 101 to the measurement result The ID of the ID of device 16 and the monitoring arrangement 101.

In monitoring system involved by the third embodiment of the disclosure, the measurement of monitoring arrangement 101 comes from solar-electricity The electric current of the output line of pond plate 78, and send measurement result.

Collection device 151 receives the measurement result from monitoring arrangement 101.Collection device 151 will be supplied from system side Voltage is acted as supply voltage.Collection device 151 according to for example regulation reception to measurement result and take It obtains the deviant of the electric current of the output line and is kept, generate and indicate to subtract the electric current obtained by deviant from other measurement results The measurement information of value.

Figure 11 is the figure of the structure of the collection device in the monitoring system indicated involved by the third embodiment of the disclosure. In fig. 11, output line 2, inner wire 3 and copper bar 7 is shown in more detail.

Referring to Fig.1 1, output line 2 includes side of the positive electrode output line 2p and negative side output line 2n.Inner wire 3 includes side of the positive electrode Inner wire 3p and negative side inner wire 3n.Copper bar 7 includes side of the positive electrode copper bar 7p and negative side copper bar 7n.

Side of the positive electrode output line 2p has and the side of the positive electrode copper bar 72p connections in the collector box 71 of corresponding power collecting units 60 First end and the second end being connect with side of the positive electrode copper bar 7p.Negative side output line 2n has and the current collection of corresponding power collecting units 60 The first end of negative side copper bar 72n connections in case 71 and the second end being connect with negative side copper bar 7n.

Side of the positive electrode inner wire 3p has and the side of the positive electrode copper bar 7p first ends connecting and the second end being connect with PCS8.Cathode Side inner wire 3n has and the negative side copper bar 7n first ends connecting and the second end being connect with PCS8.

Collection device 151 has communication unit 31, LAN (Local Area Network, LAN) communication unit 33, processing unit 34, storage part 35.Collection device 151 acts the voltage for example supplied from system side as supply voltage.That is, collecting Device 151 can utilize the electric power from system side and a direct acting.In addition, collection device 151 is not limited to be configured to using next From the electric power of system side, can also be configured to have battery and can by the battery one direct acting.

Communication unit 31 can carry out the power line communication via output line with monitoring arrangement 101.Communication unit 31 is, for example, PLC Module.

More specifically, communication unit 31 can via output line 2,5 sent-received message.Specifically, communication unit 31 Via signal wire 46 and output line 2,5 power line communication is carried out with monitoring arrangement 101.

Communication unit 31 in collection device 151 for example receives the meter from multiple monitoring arrangements 101 via output line 2,5 Survey result.That is, communication unit 31 receives the electric current and voltage of output line from solar panel 78 from each monitoring arrangement 101 Measure result.

More specifically, communication unit 31 is side of the positive electrode signal wire 46p and negative side signal wire 46n and anode through signal wire 46 Side copper bar 7p and negative side copper bar 7n are electrically connected.

It is counted for example, communication unit 31 is received via output line 2,5, copper bar 7,72 and signal wire 46 from multiple monitoring arrangements 101 Survey result.

Communication unit 31 when for example from a certain monitoring arrangement 101 receive measurement result when, by the measurement result received to Processing unit 34 exports.

Processing unit 34 is configured to comprising CPU, MPU or FPGA etc. and the RAM of memory etc. as operation, by this The readings such as CPU are stored in the program of the memory (not shown) such as RAM, PRMO and are unfolded in the memory of operation, and press It is acted according to the program, to realize processing unit 34 by the CPU etc..That is, processing unit 34 will be received from communication unit 31 it is defeated The electric current of outlet 1 and the measurement result of voltage and be for example additional to the measurement result monitoring arrangement 101 ID and current time It establishes corresponding and is stored in storage part 35.Storage part 35 stores measured value etc..Storage part 35 is, for example, RAM, EEPROM, PROM Deng.Also, processing unit 34 generates the measurement information based on measurement result as described later, and is saved in storage part 35.

LAN communication portion 33 for example connects according to Ethernet (registered trademark) standard and the transmission of terminal installation 161 into row information It receives.LAN communication portion 33 is, for example, the communication module according to Ethernet (registered trademark) specification.

Processing unit 34 obtains preservation when for example receiving measurement information requirement from end device 161 via LAN communication portion 33 It is sent to terminal installation 161 in the measurement information in storage portion 35 and the ID of corresponding monitoring arrangement 101 and via LAN communication portion 33.

The measurement of electric current and voltage of the processing unit 34 based on the output line from solar panel 78 is as a result, by the output The current value of the output line when voltage of line declines and reached specified value is kept as deviant.

Also, processing unit 34 generates other measurement results indicated from the electric current of the output line from solar panel 78 Subtract the measurement information of the current value obtained by deviant.

More specifically, referring to Fig.1 2, first, processing unit 34 is received from monitoring arrangement 101 regularly via communication unit 31 Or the measurement result that aperiodically sends and it is saved in storage part 35 (step S41).

Then, processing unit 34 selects and obtains be used for deviant among each measurement result for being stored in storage part 35 Calculating measured value.Specifically, processing unit 34 is selected and is obtained when the voltage of output line declines and reached specified value The current value of output line.For example, above-mentioned specified value is less than the starting voltage of PCS8.In addition, for example, processing unit 34 is in monitoring arrangement Deviant is updated when 101 each starting.In addition, for example, processing unit 34 calculates deviant by processing same as figure 7 (step S42).

In addition, before processing unit 34 is configured to select and obtain sunset at once or sunrise isotactic timing immediately after The current value of the output line at quarter.Alternatively, can also to be configured to select and obtain monitoring arrangement 101 initial at one day for processing unit 34 Or the current value of last acquired output line.In this case, for example, the processing unit 12 in monitoring arrangement 101 will Measured value with to obtain moment foundations corresponding and be saved in storage part 15, and using measured value and its acquirement moment as measure result to Collection device 151 is sent.

Then, the current value selected is saved in storage part 35 (step S43) by processing unit 34.

Then, processing unit 34 obtains deviant (step S44) from storage part 15, and from the electric current for being stored in storage part 35 Each measured value subtracts deviant and is corrected to the measured value.In addition, processing unit 34 can also be configured to using deviant After being corrected from the measured value that monitoring arrangement 101 newly receives, which is saved in 35 (step of storage part S45)。

In addition, processing unit 34 can also be configured to the second embodiment of the disclosure involved by monitoring arrangement in the same manner as The current value selected is compared with defined threshold value, and judge the acquirement failure of deviant based on comparative result.Example Such as, in the case where threshold value is set to less than 1 ampere and above-mentioned current value is several amperes, processing unit 34 is determined as deviant Obtain failure.In this case, if being stored with other measured values for the calculating that be used for deviant in storage part 35, The measured value can be used as deviant by processing unit 34.

As described above, in the monitoring system involved by the third embodiment of the disclosure, the measurement of monitoring arrangement 101 comes From the electric current of the output line of solar panel 78, and send measurement result.Collection device 151, which receives, comes from monitoring arrangement 101 Measurement result.Monitoring arrangement 101 acts the voltage supplied from the output line as supply voltage.Collection device 151 act the voltage supplied from system side as supply voltage, and it is defeated to obtain this according to the measurement result received The deviant of the electric current of outlet is simultaneously kept, and is generated and is indicated to subtract the electricity obtained by deviant from other measurement results of the electric current The measurement information of flow valuve.

In addition, in the monitoring method of monitoring system involved by the third embodiment of the disclosure, first, monitoring arrangement The electric current of 101 output lines of the measurement from solar panel 78, and send measurement result.Then, collection device 151, which receives, comes From the measurement result of monitoring arrangement 101.Then, collection device 151 obtains the output line according to the measurement result to reception The deviant of electric current is simultaneously kept.Then, collection device 151, which generates, indicates to subtract obtained by deviant from other measurement results The measurement information of current value.

In this way, by being configured to be substituted in the monitoring arrangement for starting and stopping according to the generating state of solar panel Deviant is calculated in 101 and is being used as the voltage supplied from system side to calculate deviant in the collection device 151 of supply voltage, It can be set as only sending the simple structure of measurement result in monitoring arrangement 101, while can more reliably obtain properly Deviant.Also, such deviant is used, it can be appropriate in the case where the measured value of sensor has offset Ground corrects the measured value.

Therefore, in the monitoring system involved by the third embodiment of the disclosure and monitoring method, can be accurate and hold It changes places and measures the output current of solar panel.

In addition, in monitoring system involved by the third embodiment of the disclosure, without being carried in monitoring arrangement 101 The voltage supplied from the output line from solar panel 78 can be made monitoring arrangement 101 as supply voltage by battery Action, therefore compared with the battery-mounted situation of such as monitoring arrangement 101, it is capable of the long lifetime and low cost of realization device Change.Monitoring system involved by this first embodiment for the disclosure is also same.

In addition, in collection device involved by the third embodiment of the disclosure, communication unit 31 connects from monitoring arrangement 101 Receive the measurement result of the electric current of the output line from solar panel 78 and the measurement result of voltage.The generation of processing unit 34 is based on The measurement information of the measurement result of the electric current.Monitoring arrangement 101 by the voltage supplied from the output line as supply voltage and into Action is made.Measurement of the processing unit 34 based on the electric current and voltage is as a result, the voltage of the output line is declined and has reached specified value When the current value of the output line kept as deviant.Also, processing unit 34 generates other meters indicated from the electric current Survey the measurement information that result subtracts the current value obtained by deviant.

In addition, in the monitoring method of collection device involved by the third embodiment of the disclosure, first, collection device 151 from monitoring arrangement 101 receive the output line from solar panel 78 electric current measurement result and voltage measurement knot Fruit.Then, measurement of the collection device 151 based on the electric current and voltage is as a result, the voltage of the output line is declined and has reached rule The current value of output line when definite value is kept as deviant.Then, collection device 151 generates the meter based on the electric current Survey the measurement information of result.Also, collection device 151 generates other meters indicated from the electric current when generating the measurement information Survey the measurement information that result subtracts the current value obtained by deviant.

In this way, by being configured to be substituted in the monitoring arrangement for starting and stopping according to the generating state of solar panel Deviant is calculated in 101 and calculates deviant in collection device 151, can be set as only sending meter in monitoring arrangement 101 The simple structure of result is surveyed, while can more reliably obtain suitable deviant.In addition, by being configured to be conceived to The current value for the output line that the timing of the size of the voltage of output line measures is used as deviant, even if in the measured value of sensor Also the measured value can be suitably corrected in the case of with offset.

Therefore, in the collection device involved by the third embodiment of the disclosure and monitoring method, can be accurate and hold It changes places and measures the output current of solar panel.

In addition, it is battery-mounted due to not having to, the voltage supplied from the output line from solar panel 78 can be used Make supply voltage and acted, therefore compared with the battery-mounted situation of such as monitoring arrangement 101, is capable of the length of realization device Service life and cost effective.Monitoring system involved by this first embodiment for the disclosure is also same.

Other structures and action are identical as the monitoring system involved by first embodiment, therefore are not repeated herein in detail Thin explanation.

It is believed that the above embodiment is all to illustrate in all respects, content and not restrictive.The scope of the present invention It is not indicated by above description, is indicated by claims, it is intended that include the meaning and range being equal with claims Interior whole changes.In addition, the scope of the present invention is also intended to carries out possible change comprising those skilled in the art to embodiment Mode obtained from shape and the other modes for realizing the arbitrarily combination of more than one embodiment.

Above explanation includes the feature of note appended below.

[note 1]

A kind of monitoring arrangement is used in the output line from solar panel and is electrically connected too with power inverter Positive energy electricity generation system, wherein have：

Electric current measurement unit measures the electric current of the output line；

Voltage measurement unit measures the voltage of the output line；

Processing unit, the measurement information of the measurement result based on the electric current measurement unit；And

Communication unit sends the measurement information generated by the processing unit,

The current value of the output line when voltage of the output line is risen and reached specified value by the processing unit It is kept as deviant,

The processing unit, which generates, to be indicated to subtract the electric current obtained by the deviant from the measurement result of the electric current measurement unit The measurement information of value,

The electric current measurement unit is the current sensor of Hall element type,

The communication unit sends the measurement information using the power line communication via the output line,

The power inverter acts the voltage supplied from the output line as supply voltage,

The power inverter makes the output line be off-state in prestart,

The specified value is less than the starting voltage of the power inverter.

[note 2]

A kind of monitoring arrangement is the solar energy being electrically connected with power inverter in the output line from solar panel Monitoring arrangement in the monitoring system used in electricity generation system, wherein have：

Processing unit generates the measurement information of the measurement result based on the electric current measurement unit；And

The monitoring arrangement acts the voltage supplied from the output line as supply voltage,

The monitoring arrangement is also equipped with the capacitor that can accumulate the electric energy supplied from the output line,

The processing unit obtains the measurement as a result, according to institute at the regulation moment using the electric energy that the capacitor is accumulated The measurement result obtained obtains the deviant of the electric current of the output line and is kept,

In the state that the monitoring arrangement is acted using the supply voltage, the processing unit, which generates, to be indicated from new The measurement result obtained subtracts the measurement information of the current value obtained by the deviant,

The regulation moment is at the time of not supplying the supply voltage,

The power inverter makes the output line be off-state in prestart.

[note 3]

A kind of collection device is the solar energy being electrically connected with power inverter in the output line from solar panel Collection device in the monitoring system used in electricity generation system, wherein have：

Communication unit receives the measurement result and voltage of the electric current of the output line from the monitoring arrangement in the monitoring system Measurement result；And

Processing unit generates the measurement information of the measurement result based on the electric current,

Measurement of the processing unit based on the electric current and the voltage is as a result, the voltage of the output line is declined and is reached The current value of output line when having arrived specified value is kept as deviant,

The processing unit, which generates, to be indicated to subtract the current value obtained by the deviant from other measurement results of the electric current The measurement information,

The monitoring arrangement has electric current of the current sensor of Hall element type as the electric current for measuring the output line Measurement unit,

The communication unit receives the measurement information using the power line communication via the output line,

The power inverter makes the output line be off-state in prestart,

The specified value is less than the starting voltage of the power inverter.

[note 4]

A kind of monitoring system is used in the output line from solar panel and is electrically connected too with power inverter Positive energy electricity generation system, wherein have：

Monitoring arrangement, measures the electric current of the output line, and sends measurement result；And

Collection device, receive the measurement from the monitoring arrangement as a result,

The collection device acts the voltage supplied from system side as supply voltage, according to the institute received State measurement result obtain the output line electric current deviant and kept, generate indicate from described in other measure result subtract Go the measurement information of the current value obtained by the deviant.

The monitoring arrangement and the collection device sent respectively using the power line communication via the output line and The measurement information is received,

The power inverter makes the output line be off-state in prestart.Label declaration

1,2,5 output line

1p, 2p, 5p side of the positive electrode output line

1n, 2n, 5n negative side output line

3 inner wires

3p side of the positive electrode inner wires

3n negative side inner wires

6 containers

7 copper bars

7p side of the positive electrode copper bars

7n negative side copper bars

8 PCS

9 power conversion units

12 processing units

13 voltage measurement units

14 communication units

15 storage parts

16 sensors (electric current measurement unit)

17 timers

18 capacitors

26 power cords

26n side of the positive electrode power cords

26p negative side power cords

31 communication units

33 LAN communication portions

34 processing units

35 storage parts

46 signal wires

46p side of the positive electrode signal wires

46n negative side signal wires

60 power collecting units

71 collector box

72 copper bars

72p side of the positive electrode copper bars

72n negative side copper bars

75 solar battery cells

76 connecting boxs

77 copper bars

77p side of the positive electrode copper bars

77n negative side copper bars

78 solar panels

101,102 monitoring arrangements (handset)

151 collection devices (machine tool)

161 terminal installations

301 monitoring systems

401 solar power systems

Claims

1. a kind of monitoring arrangement is used in the sun that the output line from solar panel is electrically connected with power inverter Energy electricity generation system, wherein have：

Voltage measurement unit measures the voltage of the output line；

The current value of the output line when voltage of the output line is risen and reached specified value by the processing unit as Deviant is kept,

The processing unit, which generates, indicates to subtract the current value obtained by the deviant from the measurement result of the electric current measurement unit The measurement information.

2. monitoring arrangement according to claim 1,

The power inverter is started when the voltage of the output line reaches starting voltage,

The specified value is less than the starting voltage.

3. monitoring arrangement according to claim 1 or 2,

The monitoring arrangement acts the voltage supplied from the output line as supply voltage, and the processing unit is in institute It states and updates the deviant when monitoring arrangement starts every time.

4. monitoring arrangement described in any one of claim 1 to 3,

The monitoring arrangement acts the voltage supplied from the output line as supply voltage.

5. monitoring arrangement according to claim 2,

In the solar power system, the output line from multiple solar panels is electrically connected with power inverter respectively It connects,

The processing unit is in the case of the difference deficiency specified value of the first current value and the second current value, by first current value Or second current value is kept as the deviant, first current value is that the voltage of the output line reaches The current value of the output line when specified value smaller than the starting voltage, second current value is the output line The current value of output line when voltage has reached voltage smaller than the starting voltage and bigger than the specified value.

6. a kind of monitoring method is the solar energy hair being electrically connected with power inverter in the output line from solar panel Monitoring method in the monitoring arrangement used in electric system, wherein

The monitoring arrangement has the electric current measurement unit for the electric current for measuring the output line and measures the voltage of the output line Voltage measurement unit,

The monitoring method includes：

The step of generating the measurement information of the measurement result based on the electric current measurement unit；

The step of sending the measurement information generated；And

The current value of the output line when voltage of the output line being risen and having reached specified value is carried out as deviant The step of holding,

The step of generating the measurement information includes generating to indicate to subtract the offset from the measurement result of the electric current measurement unit It is worth the measurement information of the current value of gained.

7. a kind of monitoring arrangement is the solar energy hair being electrically connected with power inverter in the output line from solar panel Monitoring arrangement in the monitoring system used in electric system, wherein have：

The processing unit obtains the measurement as a result, according to acquired at the regulation moment using the electric energy that the capacitor is accumulated The measurement result obtain the deviant of the electric current of the output line and kept,

In the state that the monitoring arrangement is acted using the supply voltage, the processing unit, which generates, to be indicated to obtain from new The measurement result subtract the measurement information of the current value obtained by the deviant.

8. a kind of collection device is the solar energy hair being electrically connected with power inverter in the output line from solar panel Collection device in the monitoring system used in electric system, wherein have：

Communication unit receives the measurement result of the electric current of the output line and the meter of voltage from the monitoring arrangement in the monitoring system Survey result；And

Measurement of the processing unit based on the electric current and the voltage is as a result, the voltage of the output line is declined and is reached The current value of output line when specified value is kept as deviant,

The processing unit generates the institute for indicating that the current value obtained by the deviant is subtracted from other measurement results of the electric current State measurement information.

9. a kind of monitoring system is used in the sun that the output line from solar panel is electrically connected with power inverter Energy electricity generation system, wherein have：

The collection device acts the voltage supplied from system side as supply voltage, according to the meter received Result is surveyed to obtain the deviant of the electric current of the output line and be kept, generates and indicates to subtract from measurement result described in other The measurement information of current value obtained by the deviant.

10. a kind of monitoring method is the solar energy being electrically connected with power inverter in the output line from solar panel Monitoring method in the monitoring arrangement used in electricity generation system, wherein

The monitoring arrangement has：Electric current measurement unit measures the electric current of the output line；And capacitor, it can accumulate from institute The electric energy of output line supply is stated,

The monitoring method includes：

The measurement of the electric current measurement unit is obtained as a result, according to being taken using the electric energy that the capacitor is accumulated at the regulation moment The measurement result obtain the deviant of the electric current of the output line and the step of kept；

The step of generating the measurement information of the measurement result based on the electric current measurement unit；And

The step of sending the measurement information generated,

The step of generating the measurement information include：In the state that the monitoring arrangement is acted using the supply voltage Under, generate the measurement information for indicating that the current value obtained by the deviant is subtracted from the measurement result newly obtained.

11. a kind of monitoring method, is the monitoring method in the collection device that monitoring system has, the monitoring system is used In the solar power system that the output line from solar panel is electrically connected with power inverter, wherein the monitoring Method includes：

The measurement result of the electric current of the output line and the measurement result of voltage are received from the monitoring arrangement in the monitoring system The step of；

Measurement based on the electric current and the voltage is as a result, when the voltage of the output line being declined and having reached specified value The step of current value of the output line is kept as deviant；And

The step of generating the measurement information of the measurement result based on the electric current,

The step of generating the measurement information includes generating to indicate to subtract the deviant from other measurement results of the electric current The measurement information of the current value of gained.

12. a kind of monitoring method is the solar energy being electrically connected with power inverter in the output line from solar panel Monitoring method in the monitoring system used in electricity generation system, wherein

The monitoring system has monitoring arrangement and collection device,

The collection device acts the voltage supplied from system side as supply voltage,

The monitoring method includes：

The step of monitoring arrangement measures the electric current of the output line and sends measurement result；

The collection device receives the step of measurement result from the monitoring arrangement；

The collection device obtains deviant and the progress of the electric current of the output line according to the measurement result received The step of holding；And

The collection device generates the measurement letter for indicating that the current value obtained by the deviant is subtracted from measurement result described in other The step of breath.