JP6134462B2 - Power generation facility monitoring system - Google Patents

Description

  The present invention relates to a power generation facility monitoring system, and more specifically, a power generation system including a plurality of power generation systems each having a power generation source that generates DC power and a power conditioner that converts power from the power generation source from DC to AC. The present invention relates to a monitoring system for monitoring the power generation status of equipment.

  In recent years, power generation using renewable energy such as sunlight, wind power, wave power, running water, geothermal heat, etc. has been promoted, and power generation in various forms on various scales from small-scale power generation of several watts to large-scale power generation of several thousand kW. Has been made. Here, typical solar power generation will be described. A plurality of solar cell arrays configured by a plurality of solar cell modules that generate direct-current power by sunlight are connected in parallel to a power conditioner, and the power from each solar cell array Are integrated into a power conditioner, and DC power is converted into AC power by a power conditioner and used as power for factories, stores, etc., as well as commercial power, or sold to commercial power sources.

  By the way, in the power generation system, if an abnormality occurs in the power generation source such as a solar cell, good power generation cannot be maintained. If an abnormality occurs in the power generation source, this abnormality is detected early and the abnormality is resolved. It is desirable to be able to do so. Therefore, for example, as disclosed in Patent Document 1 below, a technique has been proposed in which an abnormality of the solar cell array can be detected when an abnormality occurs in the solar cell array.

JP 2005-340464 A

  According to the technique disclosed in Patent Document 1, when an abnormality occurs in each solar cell array, the abnormality can be detected, but when an abnormality occurs in the power conditioner and the equipment after the power conditioner. Cannot detect this anomaly. In particular, in large-scale power generation of several thousand kW or more, a power conditioner connected to a plurality of solar cell arrays is used as one power generation system, and the entire power generation facility is configured by the plurality of power generation systems. In such a situation, it is desired to be able to detect an abnormality in the power generation system including the power conditioner and an abnormality in the entire power generation facility.

  Therefore, an object of the present invention is to provide a power generation facility monitoring system that can detect an abnormality in a power generation system including a power conditioner and an abnormality in the entire power generation facility.

The power generation facility monitoring system of the present invention monitors the power generation status of a power generation facility having a plurality of power generation systems each having a power generation source that generates DC power and a power conditioner that converts the power from the power generation from DC to AC. A series measurement unit for measuring the power generation amount for each power generation series, and an overall measurement unit for measuring the power generation amount of the entire power generation facility, and calculating and calculating based on the measurement value obtained by the series measurement unit wherein by the I by that comparison with monitoring the power status of each power series, it calculates and compares based on measurement values obtained by the measurements obtained by the series measurement unit and the entire measuring unit It monitors the power generation status of the entire power generation facility.

The power generation facility monitoring system of the present invention may further calculate “A / B” where A = actual power generation amount and B = maximum power generation amount that can be output.
Further, the value of “A / B” may be corrected and compared.
Furthermore, the value of “(A / B) × H” is compared with the correction value of the value of “A / B”: H = C / D, C = rated output of the power conditioner, and D = maximum output of the power generation source. It is good also as what to do.

Further, the power generation facility monitoring system of the present invention provides a power generation state of a power generation facility including a plurality of power generation systems each having a power generation source that generates DC power and a power conditioner that converts the power from the power generation source from DC to AC. The power generation facility is a monitoring unit that measures a power generation amount for each power generation series, a total measurement unit that measures a power generation amount of the entire power generation facility, and a measurement value obtained by the series measurement unit And a transmission means for transmitting the measurement value obtained by the overall measurement unit to a server, the server recording a value transmitted from the transmission means, and a value recorded in the recording means. calculating means for calculating on the basis of a comparison means for comparing the calculation result of the calculating means, the power generation of the respective power generation system by calculating and comparing on the basis of measured values obtained by the series measuring unit Monitors the situation, it may be one that monitors the power generation state of the entire power plant by calculating and comparing on the basis of measured values obtained by the measurements obtained by the series measurement unit and the entire measuring unit .
Here, the server may include a mail transmission unit that transmits a mail to an administrator of the power generation facility when the comparison result exceeds a predetermined threshold.

  In the monitoring system of the present invention, the power generation amount of each of a plurality of power generation systems including the power conditioner is measured by the series measurement unit, and the power generation amount of the entire power generation facility is measured by the overall measurement unit, and each measurement value is obtained. Calculate and compare based on. Therefore, the power generation status for each power generation system and the power generation status of the entire power generation facility can be monitored, and this abnormality can be detected when an abnormality occurs in the power generation system including the power conditioner or the entire power generation facility.

  When monitoring the power generation status of the power generation series, the actual power generation amount of each power generation series is directly compared, or the power generation amount of each power generation series is virtually calculated from the power generation amount of the entire power generation facility. A method such as comparing the calculated value with the actual power generation amount of each power generation series, and determining that there is an abnormality in the power generation series when there is a difference exceeding a predetermined threshold in the comparison result Can be illustrated. When monitoring the power generation status of the entire power generation facility, the total value of the actual power generation amount of each power generation system is compared with the value of the actual power generation amount of the entire power generation facility, and a predetermined threshold is set as the comparison result. For example, when an excess difference occurs, it is possible to exemplify a method of determining that an abnormality has occurred in the entire power generation equipment, particularly in the equipment after the power generation series.

  In the present invention, the entire power generation facility includes a plurality of power generation sources such as solar cell arrays, and does not exclude the configuration for monitoring the power generation status for each power generation source as disclosed in Patent Document 1. However, by omitting the configuration for monitoring the power generation status for each power generation source, the following advantages can be obtained.

  If you want to monitor the power generation status for each power generation source, you must provide a measurement unit that measures the power generation amount for each power generation source, and perform calculation and comparison processing based on the actual power generation amount for each power generation source. The overall equipment configuration becomes complicated and the monitoring process becomes complicated. In particular, in a large-scale photovoltaic power generation facility of, for example, several thousand kW, there are hundreds or thousands of solar cell arrays as power generation sources, and monitoring individual solar cell arrays is excessive. It becomes monitoring. On the other hand, if the configuration for monitoring the power generation status for each power generation source is omitted and the power generation status is monitored for each power generation system including the power conditioner as in the present invention, excessive monitoring is performed for each power generation source. You don't have to. When an abnormality occurs in the power generation source, it is possible to narrow down the power generation series having the abnormality in the power generation power source, and it is possible to find abnormal power generation sources in the power generation series by inspecting the narrowed power generation series. .

By the way, a plurality of power generation systems do not always have the same power generation amount that can be output to the maximum. For example, if the power generation capacity of the power generation sources of some power generation systems is low or the output capacity of the power conditioners of some power generation systems is low, there is a difference in the amount of power that can be output to the maximum among the power generation systems. Thus, when there is a difference in capacity between the power generation series, there is a possibility that a sufficiently effective comparison result cannot be obtained even if the actual power generation amount of each power generation series is directly compared. Therefore, in the invention of claim 2,
A = actual power generation amount,
B = maximum power generation that can be output,
"A / B" is calculated. Thereby, the numerical value which considered the capability of the electric power generation series can be obtained as a numerical value used as the basis of comparison. Note that the value of “A / B” can be regarded as a power generation rate.

  Further, all of the electric power generated by the power generation source is input to the power conditioner and is not output from the power conditioner. This is because there is a transmission loss and a conversion loss in the power conditioner. Here, these losses are not always constant in each power generation series. Therefore, in the invention of claim 3, the value of “A / B” which is the power generation rate is corrected and compared. Here, the value to be corrected can be appropriately determined for each power generation series or the entire power generation facility, such as a value derived based on demonstration data or a value assumed based on empirical rules.

And in invention of Claim 4,
Correction value: H = C / D,
C = Rated output of the power conditioner (maximum output value of the power conditioner),
D = maximum output of the power generation source (maximum value that can generate power from the power generation source),
As a result, the value of “(A / B) × H” is compared. That is, correction is performed by multiplying the power generation rate “A / B” by the correction value: H, and the corrected power generation rate (corrected power generation rate) is compared. Such correction is focused on the fact that the above-described loss causes a difference depending on the combination of various power generation sources and power conditioners.

  The inventions of claim 5 and claim 6 are provided with transmission means for transmitting the power generation facility to the server with the numerical value of the power generation amount of the power generation system and the power generation amount of the entire power generation facility. The monitoring system is constructed using an external server connected by a LAN or the like. As a result, the manager of the power generation facility can obtain information on the power generation status of the power generation facility by accessing the server even if the manager of the power generation facility is far away from the power generation facility.

  In particular, in the invention of claim 6, when an abnormality occurs in the power generation system or the entire power generation facility, the administrator automatically sends a mail to the portable terminal or personal computer of the power generation facility administrator. You can quickly find out about this anomaly without accessing.

  As described above, according to the present invention, it is possible to provide a power generation facility monitoring system capable of detecting an abnormality in a power generation system including a power conditioner and an abnormality in the entire power generation facility. This makes it possible to first find and narrow down abnormal power generation systems, and then find abnormal power generation sources within the narrowed power generation system. The power generation amount can be monitored well and abnormal power sources can be found, reducing the burden of monitoring the power generation amount.

It is a block diagram which shows the outline of the monitoring system of the power generation equipment which concerns on this invention. It is a table | surface which shows the specification according to series. It is a table | surface which shows each electric power generation series for every 30 minutes, and the whole electric power generation amount. It is a graph which shows each electric power generation series for every 30 minutes, and the whole electric power generation amount. It is a table | surface which shows each power generation series for every 30 minutes, and the whole power generation rate. It is a graph which shows each power generation series for every 30 minutes, and the whole power generation rate. It is a table | surface which shows each power generation series for every 30 minutes, and the correction | amendment power generation rate of the whole. It is a graph which shows each power generation series for every 30 minutes, and the whole correction | amendment power generation rate.

  An example of an embodiment of a power generation facility monitoring system according to the present invention will be described below.

  As shown in FIG. 1, the entire power generation facility 10 is configured to include a plurality of power generation systems 20, and the power generated by each power generation system 20 is used for power used in factories, stores, etc. It is used as electric power sold to an electric power source or electric power stored in a battery. In this example, in order to facilitate understanding of the invention, an example in which the power generation facility 10 is configured by the four power generation systems 20 of the first to fourth systems is shown for convenience of explanation.

  Each of the first to fourth power generation series 20 includes a plurality of solar cell arrays 22 and a power conditioner 24 in which the solar cell arrays 22 are connected in parallel. Here, the solar cell array 22 is configured such that a plurality of solar cell modules 21 are connected in series so that power having a voltage sufficient for use can be generated, such as power having a voltage of 200V. The power generated by the solar cell module 21 is DC power, but is adjusted to three-phase AC power by the power conditioner 24 and output. In this document, for convenience of explanation, an aggregate of a plurality of solar cell arrays 22 connected to one power conditioner 24 is referred to as an “array group 23”.

  On the output side of each power generation series 20, a series measurement unit 30 that measures the actual power generation amount for each power generation series 20 is provided, and the total power generated by connecting the power generation series 20 in parallel is generated as power generation equipment 10. Is provided with an overall measuring unit 31 that measures the amount of power generation of the entire power generation facility 10. Here, the series measurement unit 30 and the overall measurement unit 31 may be configured using a device such as a watt hour meter.

  The power generation facility 10 includes a measurement unit 40 configured using a computer, and the measurement unit 40 is connected to an external server 50 via the Internet or a dedicated LAN. Then, the measurement unit 40 functions as “a transmission unit 41 that transmits the measurement values obtained from the series measurement unit 30 and the overall measurement unit 31 to the server 50” by executing a predetermined program. The server 50 is an external device of the power generation facility 10, but constructs the monitoring system 60 together with the series measurement unit 30, the overall measurement unit 31, and the measurement unit 40.

  The server 50 is configured by using a computer, and by executing a predetermined program, the “recording unit 51 for recording the measurement value transmitted from the measurement unit 40” and “the numerical value recorded in the recording unit 51 are set. "Calculating means 52 for performing various calculations based on", "Comparison means 53 for comparing numerical values calculated by the calculating means 52", "If the comparison result by the comparing means 53 exceeds a predetermined threshold value, the power generation series 20 and the power generation equipment 10 is functioning as a mail transmission means 54 ”for transmitting this information to the portable terminal of the manager of the power generation facility 10, a personal computer, etc. In addition, the server 50 accesses the server 50 and requests the disclosure of information by the administrator of the power generation facility 10, so that various numerical values as shown in FIGS. 3, 5, and 7, and FIGS. And a graph as shown in FIG. 8 is output.

  By the way, in each electric power generation system | strain 20, the capability of the power conditioner 24 and the array group 23 is not the same, but becomes a specification as shown in FIG. In FIG. 2, the power conditioner 24 is abbreviated as “power conditioner”.

  First, for the power conditioner 24, the maximum power that can be output, that is, the rated output is 5.50 kW, which is the capability of the power conditioners 24 of the first series, the second series, and the third series. Is 5.20 kW. In the power generation facility 10 as a whole, the total capacity of all the power conditioners 24 is 21.70 kW.

  Next, for the array group 23, the maximum generated power, which is the capacity of the array group 23 of the first series and the second series, is 6.45 kW, but the array group 23 of the third series is 5.16 kW, the fourth series. The array group 23 is 6.02 kW. In the power generation facility 10 as a whole, the total capacity of all the array groups 23 is 24.08 kW.

  Note that even if the power generated by the array group 23 is large, the power output from the power conditioner 24 is limited by the power conditioner 24 capability if the power conditioner 24 capability is small. On the other hand, no matter how large the power conditioner 24 is, if the power generated by the array group 23 is small, the power conditioner 2 naturally does not output more power than the power generated by the array group 23. Therefore, the capacity as the power generation series 20 is 5.50 kW for the first series and the second series, 5.16 kW for the third series, and 5.20 kW for the fourth series, and becomes 21.36 kW as a whole.

Further, in each power generation system 20, there is a difference in capacity between the power conditioner 24 and the array group 23, and the capacity ratio of the power conditioner 24 to the capacity of the array group 23 (capacity of the power conditioner 24 / the capacity of the array group 23. Capability) is 0.85 for the first and second series, 1.07 for the third series , and 0.86 for the fourth series, and is 0.90 as a whole. In addition, it can be known that there is waste as a system from the capacity difference between the power conditioner 24 and the array group 23, and if there is a large capacity difference between the power conditioner 24 and the array group 23, either capacity is On the other hand, an excess amount is generated, which is not efficient. Therefore, in selecting and setting the power conditioner 24 and the array group 23, the difference in capacity should not be increased.

  Next, monitoring of the power generation status of each power generation system 20 and monitoring of the power generation status of the entire power generation facility 10 by the monitoring system 60 configured as described above will be described.

  FIG. 3 shows the actual power generation amount of the four power generation systems 20 of the first to fourth systems, the total power generation amount obtained by summing the power generation capacity of each power generation system 20, and the actual power generation capacity of the power generation facility 10 as a whole. It is a table | surface which shows total electric power generation amount, and a numerical value is an actual measurement value for every 30 minutes in 5:00 to 18:30. FIG. 4 is a graph showing changes in the amount of power generation in the four power generation systems 20 of the first to fourth systems and the power generation equipment 10 as a whole. As shown in FIG. 4, by graphing and outputting the results of actual measurement, it is possible to visually grasp changes in the amount of power generation and differences in power generation status between the power generation series 20.

  Regarding the monitoring of the power generation status of the power generation series 20, the power generation quantity 20 in each power generation series 20 is directly compared, and the power generation series 20 has a difference exceeding a predetermined threshold compared to the other power generation series 20. May be determined as abnormal. Further, a numerical value obtained by dividing the total power generation amount by the number of power generation series 20 is assigned to each power generation series 20, and the assigned numerical value is compared with the actual power generation value of each power generation series 20 to obtain a predetermined value. If there is a difference exceeding the threshold value, it may be determined that the power generation series 20 is abnormal. For example, in FIG. 4, the power generation amount of the third series is a little smaller overall than the other series, and if this difference does not exceed a preset threshold value, it is determined to be normal, If the threshold value is exceeded, it can be determined that some kind of power drop abnormality has occurred.

  Regarding the monitoring of the power generation status of the entire power generation facility 10, as shown in FIG. 3, the total power generation amount obtained by calculating the power generation amount of each power generation series 20 measured by the series measurement unit 30 and the total measurement unit 31 were measured. If the total power generation amount is compared and a difference exceeding a predetermined threshold is generated, it may be determined that the equipment after the power generation series 20 is abnormal. The abnormality includes a state in which a large transmission loss has occurred between the series measurement unit 30 and the overall measurement unit 31 for some reason. In the case of this example, if the total power generation amount and the total power generation amount shown in FIGS. 3 and 4 are compared, there is no significant difference between the two, so it is determined that the current state is normal. In FIG. 4, the total power generation amount is indicated by a thick solid line, and the total power generation amount is indicated by a thick dashed line.

  By the way, the output characteristics of the array group 23 and the power conditioner 24 of each power generation series 20 are usually mixed with various specifications. For this reason, in order to make a more accurate determination, not only the comparison of the power generation amounts described above but also the output characteristics of the array group 23 and the power conditioner 24 as described based on FIGS. 5 to 8 below are considered. It is desirable to perform the comparison.

FIG. 5 shows the four power generation systems 20 of the first to fourth systems and the entire power generation equipment 10.
A = actual power generation amount,
B = Maximum amount of power that can be output (series capacity, in the case of the total, the total value of the series capacity),
"A / B" is calculated and tabulated as "power generation rate", and FIG. 6 is a graph showing changes in the power generation rate. As shown in FIG. 6, by graphing and outputting the result of the actual power generation rate, it is possible to visually grasp the change in the power generation rate and the difference in the power generation status between the power generation series 20. In particular, the power generation facility 10 as a whole can also be compared with the same index as that of the power generation series 20 by representing the power generation rate.

In this example, since the actual power generation amount (kWh) for 30 minutes is measured, the maximum power generation amount B that can be output is the maximum power generation amount (kWh) that can be output in 30 minutes,
B = power generation capacity (kW) × 0.5 (h),
The numerical value of is applied.
In the table of FIG. 5, for example, the power generation rate of the first sequence at time 10:00 is B (sequence capability) = 5.50 kW in FIG. 2, so A / B = 2.50 kWh / (5.50 kW × 0.5h) = 90.91%.

  Regarding the monitoring of the power generation status of the power generation series 20, the power generation rate values in the respective power generation series 20 are compared, and the power generation series 20 having a difference exceeding a predetermined threshold compared with the other power generation series 20 is generated. What is necessary is just to judge that it is abnormal.

Next, in FIG. 7, in the first power generation system to the fourth power generation system 20 and the power generation equipment 10 as a whole, the power generation rate is corrected in consideration of the difference in specifications of each power generation system 20,
Correction value: H = C / D,
C = Rated output of the power conditioner (power conditioner capacity, in the case of the whole, the total value of the power conditioner capacity),
D = maximum output of the power generation source (array group capacity, in the case of the total, the total value of the array group capacity),
FIG. 8 is a table showing a value of “(A / B) × H” as a corrected power generation rate, and FIG. 8 is a graph showing a change in the corrected power generation rate. H = C / D in each series is the “capability ratio” in FIG.
In the table of FIG. 7, for example, the corrected power generation rate of the first series at time 10:00 is (A / B) × H = (A / B) × (C / D) = (2.50 kWh / (5. 50 kW × 0.5 h)) × (5.50 kW / 6.45 kW) = 77.52%.

  From the graph of FIG. 6 showing the power generation rate, it is determined that the third series has a large difference with respect to the other power generation series 20 and the whole. This is because, as shown in FIG. This is probably because the capacity ratio of the third series is significantly different from that of the other power generation series 20, and the power generation rate is greatly different due to the difference in capacity ratio. That is, in the graph of FIG. 8 showing the corrected power generation rate, it is determined that the third series is not significantly different from the other power generation series 20 and the whole. On the other hand, in FIG. 2, it is assumed that the capacity ratio of the third series is not so different from that of the other power generation series 20, and in the graph of FIG. If there is a large difference compared to the other power generation series 20 or the overall corrected power generation rate, it may be determined that some abnormality has occurred in the third series.

  Here, regarding the monitoring of the power generation status of the power generation series 20 by the corrected power generation rate, the numerical value of the corrected power generation rate in each power generation series 20 is compared and compared with the other power generation series 20 in the same manner as the method by the power generation rate. Thus, the power generation series 20 in which the difference exceeding the predetermined threshold is generated may be determined as abnormal.

  Using the corrected power generation rate in this way is particularly effective when monitoring the power generation status of each power generation system 20 in the power generation facility 10 in which many power generation systems 20 of various specifications are mixed.

Next, the effect | action of the monitoring system 60 of the power generation equipment 10 of this embodiment is demonstrated.
In the monitoring system 60, the power generation amount of each of the four power generation systems including the power conditioner 24 is measured by the series measurement unit 30, and the power generation amount of the entire power generation facility 10 is measured by the overall measurement unit 31. Calculate and compare based on values. As a result, the power generation status of each power generation system 20 and the power generation status of the entire power generation facility 10 can be monitored. When an abnormality occurs in the power generation system 20 including the power conditioner 24 and the power generation facility 10 as a whole, Abnormalities can be detected.

  In addition, when there is a large variation in the output characteristics of the array group 23 and the power conditioner 24 of each power generation series 20 shown in the specifications for each series in FIG. 2, “power generation rate” and “corrected power generation rate” are additionally employed. By doing so, a more effective comparison result can be obtained.

  Furthermore, in the present embodiment, four power generation systems are illustrated, but in the case of a large-scale power generation facility 10, the solar cell array 23 is an enormous number of hundreds or thousands, and individual solar cell arrays 22 Monitoring is excessive monitoring, and the burden is large. However, the monitoring system 60 of the present invention omits the configuration for monitoring the power generation status for each solar cell array 22, monitors the power generation status for each power generation system 20 including the power conditioner 24, and an abnormality occurs in the power generation source. In such a case, first, an abnormal power generation system 20 can be found and narrowed down to the power generation system 20, and then the narrowed power generation system 20 can be inspected to find an abnormal power generation source in the power generation system 20. If there is an abnormality in the whole, you can know it. Therefore, it is possible to efficiently monitor the amount of power generation and find an abnormal power generation source, thereby reducing the monitoring burden. In addition, the configuration of the power generation facility 10 as a whole is simplified, and it is not necessary to install a sensor for measuring the amount of power generated for each solar cell array 22 throughout the power generation facility 10, thereby saving facility costs.

  In addition, since the transmission unit 41 that transmits the numerical value of the power generation amount of the power generation series 20 and the numerical value of the power generation amount of the entire power generation facility 10 to the server 50 is provided, the administrator of the power generation facility 10 is far away from the power generation facility 10. However, by accessing the server 50, information on the power generation status of the power generation facility 10 can be obtained. In addition, when an abnormality occurs in the power generation system 20 or the power generation facility 10 as a whole, the administrator automatically accesses the server 50 because an e-mail is automatically transmitted to the portable terminal or personal computer of the power generation facility 10 administrator. Even without this, it is possible to know this abnormality promptly.

  As mentioned above, in this embodiment, although an example of the monitoring system of the power generation equipment which concerns on this invention was shown, this invention is not restricted to the above-mentioned example, In the range which does not deviate from the summary of this invention, appropriate change is carried out. Is possible.

  For example, each power generation system 20 is not limited to one configured by one power conditioner 24 and a power generation source connected to the power conditioner 24, and is connected to a plurality of power conditioners 24 and these power conditioners 24. It may be handled as an aggregate with the power generation source.

  Further, not only the comparison of the power generation amount but also the “power generation rate” shown in FIGS. 5 and 6, and FIGS. 7 and 7 are used as factors for performing the comparison in consideration of the output characteristics of the array group 23 and the power conditioner 24. Although the “corrected power generation rate” shown in FIG. 8 is provided, other factors may be provided, or other factors may be further added to these factors.

  In addition, the monitoring system 60 of the above-described embodiment includes a transmission unit 41 that transmits the measurement value obtained by the series measurement unit 30 and the measurement value obtained by the overall measurement unit 31 to the server 50 and the manager of the power generation facility 10. The mail sending means 54 for sending the mail may not be provided.

  And although the series measurement part 30 of the said embodiment is provided for every power conditioner 24, it is not restricted to this, Furthermore, it does not prevent making it provide for every solar cell array 22. FIG.

  Furthermore, in the said embodiment, although the thing using a solar cell is shown as an electric power source, this invention is not limited to sunlight, Various kinds by renewable energy, such as a wind force, a wave force, flowing water, geothermal heat, are shown. The present invention can be similarly applied to a power generation facility monitoring system.

DESCRIPTION OF SYMBOLS 10 Power generation equipment 40 Measurement unit 20 Power generation series 41 Transmission means 21 Solar cell module 50 Server 22 Solar cell array 51 Recording means 23 Array group 52 Calculation means 24 Power conditioner 53 Comparison means 30 Sequence measurement part 54 Mail transmission means 31 Whole measurement part 60 Monitoring system

Claims (6)

A power generation facility monitoring system for monitoring the power generation status of a power generation facility including a plurality of power generation systems having a power generation source for generating DC power and a power conditioner for converting power from the power generation source from DC to AC,
A series measurement unit for measuring the power generation amount for each power generation series;
And an overall measurement unit that measures the amount of power generation of the entire power generation facility,
Monitors the power generation state of said each power series I'm to calculation and comparison based on the measured value obtained by the series measuring unit, the measured values obtained by the series measuring unit and the entire measuring unit A power generation facility monitoring system , wherein the power generation status of the entire power generation facility is monitored by calculation and comparison based on the obtained measurement values .
A = actual power generation amount,
B = maximum power generation that can be output,
The power generation facility monitoring system according to claim 1, wherein “A / B” is calculated.   The power generation facility monitoring system according to claim 2, wherein the values of “A / B” are corrected and compared. Correction value: H = C / D,
C = Rated output of the power conditioner,
D = maximum output of the power generation source,
As
The power generation facility monitoring system according to claim 3, wherein values of “(A / B) × H” are compared. A power generation facility monitoring system for monitoring the power generation status of a power generation facility including a plurality of power generation systems having a power generation source for generating DC power and a power conditioner for converting power from the power generation source from DC to AC,
The power generation facility is:
A series measurement unit for measuring the power generation amount for each power generation series;
An overall measurement unit that measures the amount of power generated by the entire power generation facility;
A transmission means for transmitting the measurement value obtained by the series measurement unit and the measurement value obtained by the overall measurement unit to a server;
The server
Recording means for recording the value transmitted from the transmitting means;
A computing means for computing based on the value recorded in the recording means;
Comparing means for comparing the calculation results of the calculating means,
The power generation status of each power generation series is monitored by calculation and comparison based on the measurement values obtained by the series measurement unit, and the measurement values obtained by the series measurement unit and the overall measurement unit are obtained. A power generation facility monitoring system , wherein the power generation status of the entire power generation facility is monitored by calculation and comparison based on measurement values .
  The power generation facility monitoring system according to claim 5, wherein the server includes a mail transmission unit that transmits a mail to a manager of the power generation facility when a comparison result exceeds a predetermined threshold.

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