JP2018182825A - Monitoring support system, monitoring support method, and monitoring support program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring support system, a monitoring support method, and a monitoring support program, capable of providing information for efficiently using the facility ability of a power transmission/transformation facility.SOLUTION: A monitoring support system of an embodiment includes a temperature acquisition unit, a current value acquisition unit, a state prediction unit, and a display control unit. The temperature acquisition unit acquires temperature information from a temperature sensor for measuring a temperature of a transformer. The current value acquisition unit acquires a value of current flowing through the transformer. On the basis of the temperature information acquired by the temperature acquisition unit and the value of current acquired by the current value acquisition unit, the state prediction unit predicts the transformer's state in the future. On the basis of the transformer's state in the future predicted by the state prediction unit, the display control unit generates information for making a display unit display at least one of a value of current suppliable to the transformer and a continuable time until the transformer's temperature reaches an allowable limit.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a monitoring support system, a monitoring support method, and a monitoring support program.

  In the transmission and transformation equipment of the conventional electric power system, in order to operate the equipment operation at a thermally acceptable limit value or less, suppression control of the output of a generator or the like or reinforcement of the equipment is performed. In the conventional power transmission and transformation equipment, the equipment temperature, the outside air temperature, the electricity quantity information of the power transmission equipment, and the like are acquired, and control is performed based on the predicted rise in equipment temperature in the current equipment usage state. However, in the prior art, the equipment temperature and the outside temperature are set to values that do not exceed the predetermined temperature under severe outside temperatures in summer or winter or equivalent ambient temperatures throughout the year. Therefore, transmission and transformation facilities are often operated in a state where the temperature difference is larger than the actual facility operating temperature, and even if the information based on the above operation is displayed on the display unit, the operator can There was a case that the operation suitable for the situation could not be performed.

Japanese Patent Application Laid-Open No. 63-314128 Unexamined-Japanese-Patent No. 5-292651 Japanese Patent Application Laid-Open No. 7-222345

  The problem to be solved by the present invention is to provide a monitoring support system, a monitoring support method, and a monitoring support program that can provide information for efficiently utilizing the facility capacity of transmission and transformation facilities.

  The monitoring support system of the embodiment has a temperature acquisition unit, a current value acquisition unit, a state prediction unit, and a display control unit. The temperature acquisition unit acquires temperature information from a temperature sensor that measures the temperature of the transformer. The current value acquisition unit acquires a current value flowing through the transformer. The state prediction unit predicts the future state of the transformer based on the temperature information acquired by the temperature acquisition unit and the current value acquired by the current value acquisition unit. The display control unit can continue until the current value that can be supplied to the transformer or the temperature of the transformer reaches an allowable limit based on the future state of the transformer predicted by the state prediction unit Information is generated to display at least one of the times on the display unit.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows an example of the monitoring assistance system 100 of 1st Embodiment. The figure for demonstrating generation | occurrence | production of possible continuation time using an oil temperature predicted value. The figure for demonstrating generation | occurrence | production of possible continuation time using a lifetime loss predicted value. FIG. 7 is a view for explaining an operation support information display screen 221 displayed on the display unit 220 according to the first embodiment. 6 is a flowchart showing an example of the flow of processing in the monitoring support system 100 of the first embodiment. A figure showing an example of surveillance supporting system 100A of a 2nd embodiment. The figure for demonstrating the operation assistance information display screen 222 displayed on the display part 220 of 2nd Embodiment. The figure which shows an example of the monitoring assistance system 100B of 3rd Embodiment. The figure for demonstrating the selection example of the operation assistance information by the calculation result using oil temperature and winding temperature. The flowchart which shows an example of the flow of the process in the monitoring assistance system 100 of 3rd Embodiment. The figure which shows an example of the monitoring assistance system 100C of 4th Embodiment. The figure for demonstrating the control information produced | generated based on the oil temperature predicted value calculated by the prediction calculating part 121. FIG. The figure for demonstrating the operation assistance information display screen 223 displayed on the display part 220 of 4th Embodiment. The flowchart which shows an example of the flow of the process in 100 A of monitoring assistance systems of 4th Embodiment. The figure which shows an example of monitoring assistance system 100D of 5th Embodiment. The figure for demonstrating the operation assistance information display screen 224 displayed on the display part 220 of 5th Embodiment. The flowchart which shows an example of the flow of the process in monitoring assistance system 100D of 5th Embodiment. The figure which shows an example of the monitoring assistance system 100E of 6th Embodiment.

  Hereinafter, a monitoring support system, a monitoring support method, and a monitoring support program of the embodiment will be described with reference to the drawings.

First Embodiment
[overall structure]
FIG. 1 is a diagram illustrating an example of a monitoring support system 100 according to the first embodiment. The monitoring support system 100 illustrated in FIG. 1 is connected to the transformer 10, the temperature sensor 20, and the display device 200.

  The transformer 10 includes, for example, an iron core serving as a passage of magnetic flux and two or more windings serving as a passage of current linked to the magnetic flux. The iron core and the two or more windings are installed so as not to reposition each other. The iron core and the two or more windings are housed, for example, in a container filled with an insulating oil for enhancing the insulating strength and the cooling effect. The insulating oil is, for example, silicone oil or mineral oil. Transformer 10 receives AC power from the outside, denatures voltage and current by electromagnetic induction, and supplies AC power to the outside. The transformer 10 also includes, for example, a current sensor 12. The current sensor 12 measures the value of the current flowing through the winding of the transformer 10.

  The transformer 10 also includes, for example, a plurality of taps (not shown) for adjusting the output voltage attached to the winding, and a tap switching control unit (not shown) that switches the taps. The tap switching control unit switches the conduction state of the plurality of taps according to the received voltage, and adjusts the transformation ratio by changing the number of turns of the winding.

  For example, one or more temperature sensors 20 are installed inside and / or outside of the transformer 10 to measure the temperature of the transformer 10. The temperature sensor 20 installed inside the transformer 10 measures, for example, the temperature of the insulating oil (hereinafter referred to as "oil temperature"). Further, the temperature sensor 20 installed outside the transformer 10 measures, for example, the temperature around the transformer 10 (hereinafter, referred to as “the outside air temperature”). The temperature sensor 20 acquires, for example, information on the electrical resistivity proportional to the temperature obtained by the resistance temperature detector as sensor information. The temperature sensor 20 outputs sensor information on the oil temperature and the outside air temperature to the monitoring support system 100 in association with the measurement time.

  The monitoring support system 100 includes, for example, an acquisition unit 110, a state prediction unit 120, a display control unit 130, and a communication unit 140. These mechanisms are software function units that function by execution of a program stored in a program memory by a processor such as a CPU (Central Processing Unit). Some or all of these functional units may be realized by hardware such as a large scale integration (LSI), an application specific integrated circuit (ASIC), or a field-programmable gate array (FPGA).

  The acquisition unit 110 includes, for example, a sensor information acquisition unit 111, a temperature acquisition unit 112, and a current value acquisition unit 113. The sensor information acquisition unit 111 is an example of a “sensor interface”. The sensor information acquisition unit 111 acquires sensor information measured by the temperature sensor 20.

  The temperature acquisition unit 112 converts the sensor information acquired by the sensor information acquisition unit 111 into a temperature value that can be calculated by the state prediction unit 120. Further, the temperature acquisition unit 112 may include, for example, an AD converter that converts an analog signal into a digital signal when the temperature sensor 20 outputs an analog signal.

  The current value acquisition unit 113 acquires the current value measured by the current sensor 12 provided in the transformer 10. The measurement time by the current sensor 12 is, for example, associated with the measurement time by the temperature sensor 20.

  The state prediction unit 120 predicts the future state of the transformer 10 based on, for example, the temperature value acquired by the temperature acquisition unit 112 and the current value acquired by the current value acquisition unit 113. The state prediction unit 120 includes, for example, a prediction calculation unit 121 and an operation support information generation unit 122. The prediction calculation unit 121 calculates, for example, a predicted oil temperature value of the transformer 10 at each time t based on the temperature information acquired by the temperature acquisition unit 112 and the current value acquired by the current value acquisition unit 113. At least one of the line temperature prediction value and the life loss prediction value is calculated. Details of the function of the prediction calculation unit 121 will be described later.

  The operation support information generation unit 122 measures the current value acquired by the current value acquisition unit 113 and the measurement information such as the temperature acquired by the temperature acquisition unit 112, the prediction calculation result calculated by the prediction calculation unit 121, and the thermal The operation support information 123 is generated based on the allowable limit. The thermal tolerance is, for example, a limit (for example, a temperature limit) at which facility operation can be thermally permitted to the transformer 10.

  The operation support information 123 includes, for example, a current value, a temperature, a continuous allowable current value, a time-limited allowable current value, and a possible continuation time. The temperature is the outside air temperature, the oil temperature of the transformer 10 or the winding temperature. The continuous allowable current value is, for example, the maximum current value that can be supplied to the facility without exceeding the thermal allowable limit. In addition, the time limit allowable current value is the maximum current value that can be supplied to the facility without exceeding the thermal allowable limit within a predetermined time. The sustainable time is, for example, the time until the temperature of the transformer 10 reaches the thermal tolerance, assuming that the current value is maintained and the operation is continued.

  The display control unit 130 generates information to be displayed on the display unit 220 of the display device 200 based on the operation support information 123 generated by the operation support information generation unit 122. The information to be displayed on the display unit 220 may be, for example, image information or an HTML (Hyper Text Markup Language) file that can be displayed on a browser.

  The communication unit 140 communicates with the communication unit 210 of the display device 200. The communication unit 140 transmits the information generated by the display control unit 130 to the communication unit 210.

  The display device 200 includes, for example, a communication unit 210 and a display unit 220. The display device 200 is, for example, a PC (Personal Computer), but may be a tablet terminal or a smartphone. The communication unit 210 communicates with the communication unit 140 of the monitoring support system 100. The communication unit 210 acquires information to be displayed on the display unit 220 from the communication unit 140.

  The display unit 220 is, for example, an LCD (Liquid Crystal Display) or an organic EL (Electro Luminescence) display device. The display unit 220 displays the information received by the communication unit 210 on the screen. An example of the information displayed on the display unit 220 will be described later.

State prediction
Here, the state prediction processing by the above-described state prediction unit 120 will be described. The prediction calculation unit 121 calculates the oil temperature, winding temperature, or life loss of the transformer 10 at time t.

For example, the prediction calculation unit 121 determines the current inside the transformer 10 acquired by the current value acquisition unit 113 and the outside air temperature θ _a [° C.] and the oil temperature initial value θ _OS [° C.] acquired by the temperature acquisition unit 112. The value I is applied to (Equation 1) to calculate the calculated oil temperature θ _ot (t) of the transformer 10 at time t. When each of the outside air temperature θ _a [° C.] or the oil temperature initial value θ _OS [° C.] is obtained from a plurality of temperature sensors 20, for example, an average value of the temperatures measured by the respective temperature sensors Alternatively, a value acquired from the temperature sensor 20 specified in advance is used.

（式１）において、τ０は油温変化の時定数を示す。また、θ_ＯＬは油温最終到達温度[℃]を示し、例えば（式２）で算出される。

In (Expression 1), τ0 represents a time constant of oil temperature change. Further, θ _OL indicates the oil temperature final reached temperature [° C.], and is calculated by, for example, (Expression 2).

（式２）において、θ_０は、最高油温上昇値［Ｋ］を示し、例えば（式３）で算出される。

In (Expression 2), θ ₀ indicates the maximum oil temperature increase value [K], and is calculated by, for example, (Expression 3).

（式３）において、θ_ＯＮは定格負荷時の最高油温上昇値［ｋ］を示し、Ｋは変圧器１０の負荷率（＝現在の電流値Ｉ[Ａ]／定格負荷時の電流値ＩＮ［Ａ］）を示し、Ｒは損失比（＝定格負荷時の負荷損／無負荷損）を示し、ｍは冷却方式により定まる定数を示す。これにより、予測演算部１２１は、現在の変圧器使用状態の外気温および電流値を使用して、異なる時刻ｔについて上記の演算を行うことで、将来の複数の時点における油温計算値θ_Ｏｔ（ｔ）を演算して、変圧器１０の将来の油温を予測することができる。

In equation (3), θ _ON indicates the maximum oil temperature increase value [k] at rated load, and K indicates the load factor of transformer 10 (= current current value I [A] / current value at rated load IN [A]) is shown, R indicates a loss ratio (= load loss at rated load / no load loss), and m indicates a constant determined by the cooling method. Thus, the prediction calculation unit 121 performs the above calculation at different times t using the current outside temperature and current value of the transformer usage state, to calculate the oil temperature calculated values θ _Ot at a plurality of future points in time. (T) can be calculated to predict the future oil temperature of the transformer 10.

  In addition, when performing calculation to predict the future value of the winding temperature, the prediction calculation unit 121 calculates winding temperatures [° C.] at a plurality of future points in time using, for example, (Expression 4).

（式４）において、θｇは巻線温度上昇値［Ｋ］を示す。

In Equation (4), θg represents a winding temperature rise value [K].

In addition, the prediction calculation unit 121 may calculate the life loss prediction value. The lifetime loss is mainly affected by the winding temperature θ _gt (t). For example, assuming that the winding temperature is continuously operated at 95 ° C., the transformer 10 can be expected to have a life of about 30 years. On the other hand, it is assumed that the life of the transformer 10 is halved when it is assumed that the continuous operation is performed in a state where the winding temperature is increased by 6 ° C. from 95 ° C. If operating at a winding temperature of 149 ° C., it indicates that the life is reduced by 3% in about 30 minutes. This indicates that the equipment will shrink about 10 days in one year. Moreover, it is assumed that the lifetime of the transformer 10 doubles if it is assumed that continuous operation is performed in a state where the winding temperature is lowered by 6 [.degree. C.] from 95 [.degree. C.]. Therefore, the prediction calculation unit 121 can calculate the lifetime loss [minute / year] using (Equation 5).

（式５）において、ｂは、寿命損失係数を示す。例えば、巻線温度が６℃上昇するごとに寿命が半減するものと仮定した場合、寿命損失係数は、（ｌｎ２）／６＝０．１１５５となる。また、（式５）において、Ｔ１は監視期間の開始時刻を示し、Ｔ２は監視期間の終了時刻を示す。したがって、寿命損失予測値Ｖは、寿命損失の累積値として求めることができる。

In Equation (5), b represents a life loss coefficient. For example, assuming that the life is reduced by half each time the winding temperature rises by 6 ° C., the life loss coefficient is (ln 2) /6=0.1155. Moreover, in (Formula 5), T1 shows the start time of a monitoring period, and T2 shows the completion | finish time of a monitoring period. Therefore, the life loss prediction value V can be obtained as an accumulated value of the life loss.

  The operation support information generation unit 122 generates the operation support information 123 using at least one of the oil temperature predicted value, the winding temperature predicted value, and the life loss predicted value predicted by the prediction operation unit 121. .

FIG. 2 is a diagram for describing generation of a possible continuation time using an oil temperature predicted value. In the example of FIG. 2, the horizontal axis indicates time, and the vertical axis indicates oil temperature. In the example of FIG. 2, the oil temperature predicted value for every time t is shown. The operation support information generation unit 122 refers to, for example, the prediction result (at multiple points in time) of the calculated oil temperature value θ _ot (t), and acquires the time when the oil temperature predicted value reaches the judgment threshold of the thermal tolerance. . The determination threshold may be, for example, a fixed value, or may be a value arbitrarily changed by the operation status or the operator. In addition, the operation support information generation unit 122 calculates the time from the current time to the time to reach the determination threshold, and sets the calculated time as the continuable time.

  In the example of FIG. 2, the oil temperature predicted value has reached the judgment threshold value of the thermal tolerance at time t1. Therefore, the operation support information generation unit 122 generates the time (t1-t0) from the current time t0 to the time t1 as the possible continuation time.

  Further, the prediction calculation unit 121 substitutes a plurality of virtual current values into the current value I in the transformer 10 acquired by the current value acquisition unit 113, for example, to calculate the expressions (1) to (3). Do. Then, the operation support information generation unit 122 continuously allows the maximum value of the virtual current at which the predicted oil temperature value does not exceed the determination threshold of the thermal allowable limit value among the results calculated by substituting the plurality of virtual current values. Generate as a current value.

  Further, the prediction calculation unit 121 performs, for example, calculation of (Expression 1) to (Expression 3) in which a plurality of virtual current values are substituted within a range of a predetermined time (for example, one hour from the current time). Then, the operation support information generation unit 122 sets, among the calculation results based on the plurality of virtual current values, the maximum value of the current at which the predicted oil temperature does not exceed the determination threshold of the thermal tolerance within the predetermined time. Generate as a value.

  In addition, the result similar to the prediction result of the oil temperature shown in FIG. 2 is obtained also about the temperature prediction value (winding temperature prediction value) of the future with respect to the winding temperature. Therefore, the state prediction unit 120 sets the judgment threshold value of the thermal tolerance limit corresponding to the winding temperature as well as the oil temperature, and based on the set judgment threshold value and the winding temperature predicted value, the winding temperature At least one value is generated among the values of the continuous available time, the continuous allowable current value, and the time-limited allowable current value based on.

  In addition, the state prediction unit 120 may generate each value of the above-described continuable time, the continuous allowable current value, and the time limit allowable current value based on the lifetime loss predicted value. FIG. 3 is a diagram for describing generation of the possible continuation time using the life loss prediction value. In the example of FIG. 3, the horizontal axis indicates time, and the vertical axis indicates winding temperature (vertical axis on the left side of FIG. 3) and life loss (vertical axis on the right side of FIG. 3).

  The lifetime loss is predicted based on the elapsed time after the temperature of the winding temperature exceeds a predetermined value (e.g., 95 ° C.) and the amount of increase of the winding temperature from the predetermined value. In (Expression 5), the prediction operation unit 121 performs the operation with the time when the temperature of the winding temperature exceeds a predetermined value as T1 and the current time as T2. In addition, the prediction calculation unit 121 ends the calculation when the temperature of the winding temperature falls below a predetermined value. The prediction calculation unit 121 may be provided with hysteresis to prevent hunting.

  In the example of FIG. 3, the operation support information generation unit 122 acquires a time t2 at which the life loss prediction value calculated by the prediction calculation unit 121 exceeds the determination threshold of the life loss. Then, the operation support information generation unit 122 calculates the time from the acquired time t0 to the time t2, and generates the calculated time (t2-t0) as the possible continuation time.

  Further, the prediction calculation unit 121 substitutes a plurality of virtual current values into the current value I in the transformer 10 acquired by the current value acquisition unit 113, and performs the calculations of (Equation 1) to (Equation 5) described above. Do. Then, among the results calculated by substituting a plurality of virtual current values, the operation support information generation unit 122 sets the maximum value of the current whose life loss predicted value does not exceed the determination threshold of the life loss as the continuous allowable current value. Generate Further, the prediction calculation unit 121 performs the calculation of (Equation 1) to (Equation 5) in which a plurality of virtual current values are substituted within a predetermined time range, and the life loss prediction value does not exceed the judgment threshold of the life loss The maximum value of current is generated as the time limit allowable current value. The state prediction unit 120 predicts the information regarding the life loss, so that the operator can grasp the state of the facility due to the overload from the viewpoint of the life, and when the priority order of the operation facilities is determined or planned It can be one of the guidelines for performing equipment renewal.

[Display screen]
Next, an example of a screen displayed on the display unit 220 in the first embodiment will be described. FIG. 4 is a diagram for describing the operation support information display screen 221 displayed on the display unit 220 according to the first embodiment. In the operation support information display screen 221, for example, a constant operation information display area 221a, a measurement data display area 221b, and an operation summary information display area 221c are shown.

  In the continuous operation information display area 221a, the continuous allowable current value generated by the operation support information generation unit 122 and the possible continuous time are shown.

  In the measurement data display area 221 b, the outside air measurement value and the oil temperature measurement value of the transformer 10 acquired by the temperature acquisition unit 112, the current value acquired by the current value acquisition unit 113, and the calculation by the prediction operation unit 121 The calculated values of the winding temperature and the oil temperature at the current time are shown. In the outside air temperature measurement value, for example, the value of the outside air temperature measured by each of two temperature sensors (for example, thermometers 1 and 2) for outside air temperature measurement is shown. Further, the oil temperature measurement value indicates the value of the oil temperature measured by each of three temperature sensors (for example, the first phase to the third phase) for oil temperature measurement.

  The operation summary information display area 221c shows a part or all of the information displayed in the operation information display area 221a and the measurement data display area 221b. The operation support information display screen 221 may display the power value [MW] in addition to (or instead of) the current value.

  Although the example shown in FIG. 4 mainly shows information based on oil temperature, information based on winding temperature or life loss may be displayed instead of oil temperature. For example, when displaying a value based on the lifetime loss, the display control unit 130 generates information for causing the display unit 220 to display a value obtained by integrating what percentage of the 30-year lifetime has been consumed so far. Do. The operator may select at least one element to be displayed on the screen as to which of the elements of oil temperature, winding temperature, and life loss is to be displayed, and the monitoring support system At least one element to be displayed in advance in 100 may be set.

  Further, the operation support information display screen 221 may display “within continuous value” when the current value flowing through the winding of the transformer 10 in the current operation state is within the continuous allowable current value. When the continuous allowable current value is exceeded, "limit value exceeded" may be displayed. These display information is also generated by the display control unit 130.

  By referring to the operation support information display screen 221, the operator can grasp the allowable current value and the operation continuable time required from the constantly changing system state and the outside air temperature, and the operation according to the current facility state It can be performed.

  FIG. 5 is a flowchart illustrating an example of the flow of processing in the monitoring support system 100 according to the first embodiment. In addition, the process shown in FIG. 5 shows the production | generation process of the operation assistance information based on an oil temperature predicted value as an example. Further, the flowchart shown in FIG. 5 is repeatedly executed at a predetermined timing.

  In the example of FIG. 5, first, the temperature acquisition unit 112 acquires temperature information of the transformer 10 from the temperature sensor 20 (step S100). Next, the current value acquisition unit 113 acquires the current value flowing to the winding of the transformer 10 from the current sensor 12 installed in the transformer 10 (step S110). Next, the prediction calculation unit 121 calculates a predicted oil temperature value for each time t of the transformer 10 based on the outside air temperature and the oil temperature, and the current value (step S120).

  Next, the operation support information generation unit 122 generates the possible continuation time based on the calculated oil temperature predicted value and the judgment threshold value of the thermal tolerance (step S130). Next, the prediction calculation unit calculates a predicted oil temperature value at each time t using a plurality of virtual current values instead of the current value acquired from the current sensor (step S140). Next, the operation support information generation unit 122 generates a continuous allowable current value or a time-limited allowable current value based on the calculated oil temperature predicted value and the determination threshold of the thermal allowable limit (step S150). The operation support information generation unit 122 may generate both the continuous allowable current value and the time-limited allowable current value.

  Next, the operation support information generation unit 122 generates the operation support information 123 based on the measured temperature or current value or the value calculated by the prediction calculation unit 121 (step S160). Next, the display control unit 130 generates an image for displaying the operation support information 123 on the display unit 220 of the display device 200 (step S170), and outputs the generated image to the display device 200 (step S180). , End the processing of this flowchart. Thus, the display device 200 can receive the information transmitted by the monitoring support system 100 and cause the display unit 220 to display the information.

  The monitoring support system 100 may be able to communicate with a plurality of display devices 200. In this case, the monitoring support system 100 transmits, to the plurality of display devices 200, information for displaying the operation support information 123. Further, the monitoring support system 100 may have the function of the display unit 220.

  As described above, according to the monitoring support system 100 of the first embodiment, the transformer 10 can be supplied based on the future state of the transformer 10 predicted by the measured temperature information and the current value. Information for efficiently utilizing the facility capacity of the transmission and transformation equipment by displaying on the display unit 220 at least one of the current value or the continuous time until the temperature of the transformer reaches the allowable limit Can be provided. Thus, the monitoring support system 100 can display on the display device 200 the allowable current value obtained from the system status and the outside air temperature changing with the passage of time, and the operator can generate power before the limit temperature is exceeded. Adjustment of output and system switching can be implemented.

  Further, since the monitoring support system 100 can provide the allowable value of the facility itself as the continuous allowable current value and can display the temporary allowable value on the display unit 220 as the time-limited allowable current value, the rating of the transformer 10 can be obtained. Even if the capacity is exceeded, the operable range can be displayed in detail. Therefore, the operator can perform an operation in accordance with the current facility state using the continuous allowable current value and the time-limited allowable current value displayed on the display device 200 as a guideline. Further, the monitoring support system 100 can cause the display device 200 to display the operation continuation possible time until the control target device related to the transformer 10 is controlled. Therefore, the operator can grasp the temporal margin of operation of the facility, and can efficiently utilize the facility.

Second Embodiment
Next, a second embodiment of the monitoring support system will be described. In the following, the same names and reference numerals are used for the configuration having the same function as that of the first embodiment, and the specific description is omitted.

  FIG. 6 is a diagram showing an example of a monitoring support system 100A of the second embodiment. The monitoring support system 100A includes an acquisition unit 110, a state prediction unit 120A, a display control unit 130, and a communication unit 140. In the following description, the configuration of the state prediction unit 120A that is the difference from the first embodiment is mainly described.

  For example, the larger the current value flowing to the winding temperature of transformer 10, the shorter the time for the oil temperature predicted value to reach the judgment threshold of the thermal tolerance, and the current value flowing to the winding temperature of transformer 10 The smaller the, the longer it takes to reach the thermal acceptance threshold. Therefore, when generating the time-limited allowable current value, it is preferable to generate the time-limited allowable current value based on a plurality of times. Therefore, the operation support information generation unit 122A acquires, from the result calculated by the prediction calculation unit 121, a virtual current value at the time of reaching the determination threshold of the thermal tolerance for each of a plurality of elapsed times (Tx), The acquired virtual current value is generated as a time limit allowable current value. The plurality of elapsed times are, for example, 30 minutes, 1 hour, 2 hours, 4 hours, and 8 hours.

  In addition, the operation support information generation unit 122A includes operation support information 123A including at least one of a current value, a temperature, a continuous allowable current value, a time limit allowable current value after a plurality of times, and a possible continuation time. Generate The display control unit 130 generates information for displaying the operation support information 123A generated by the operation support information generation unit 122A on the display unit 220.

  FIG. 7 is a diagram for describing an operation support information display screen 222 displayed on the display unit 220 according to the second embodiment. In the operation support information display screen 222, for example, a constant operation information display area 222a, a measurement data display area 222b, and an operation summary information display area 222c are shown. The contents displayed in the measurement data display area 222 b and the operation summary information display area 222 c are the same as the measurement data display area 221 b and the operation summary information display area 221 c of the operation support information display screen 221 described above, I omit it.

  In the continuous operation information display area 222a, the continuous allowable current value generated by the operation support information generation unit 122A, the continuous allowable time, and the time limit allowable current after a plurality of times are shown. The operator can grasp the allowable current values for a plurality of elapsed times from the current time by referring to the operation support information display screen 222.

  Regarding the flow of processing in the monitoring support system 100A of the second embodiment, among the processing of steps S100 to S180 in the monitoring support system 100 of the first embodiment, the same processing is performed for processing other than the processing of step S150. I do. In the process of step S150, when generating a time-limited allowable current value, a plurality of time-limited allowable current values are generated.

  As described above, according to the monitoring support system 100A of the second embodiment, in addition to the same effects as in the first embodiment, the allowable current values for a plurality of elapsed times based on the current time are displayed As displayed at 220, the operator can adjust the current value in accordance with the time required for operation. Therefore, the operator can utilize the facility capacity of the transmission and transformation equipment more efficiently.

Third Embodiment
Next, a third embodiment of the monitoring support system will be described. In the third embodiment, a system configuration similar to that of the above-described monitoring support system of the first embodiment can be applied.

  FIG. 8 is a diagram showing an example of a monitoring support system 100B of the third embodiment. The monitoring support system 100B includes an acquisition unit 110, a state prediction unit 120B, a display control unit 130, and a communication unit 140. In the monitoring support system 100B, in comparison with the monitoring support system 100A of the second embodiment, in the state prediction unit 120B, instead of the prediction operation unit 121 and the operation support information generation unit 122A, the prediction operation unit 121B and the operation support information The difference is that the configuration includes the generation unit 122B and the prediction value selection unit 124. Therefore, in the following description, mainly the configurations of the prediction calculation unit 121B, the operation support information generation unit 122B, and the prediction value selection unit 124 will be mainly described. Also, this configuration may be added to the second embodiment.

  FIG. 9 is a diagram for describing an example of selection of operation support information based on a calculation result using oil temperature and winding temperature. The oil temperature and the winding temperature have different relationships as shown in FIG. 9 when the horizontal axis is the transformer load factor [%] and the vertical axis is the outside temperature [° C.] of the transformer 10 Do. In this case, as shown in FIG. 9, it is divided into four regions A to D. The region A is a region in which both the calculation result of the oil temperature predicted value and the calculation result by the winding temperature reach the thermal tolerance. Region B is a region where the calculation result by the oil temperature reaches the thermal tolerance before the calculation result by the winding temperature. The calculation result by the oil temperature reaches the thermal tolerance earlier because the oil temperature rises as the outside air temperature rises. Region C is a region where the calculation result by the winding temperature reaches the thermal tolerance before the calculation result by the oil temperature. The calculation result by the winding temperature reaches the thermal tolerance earlier because the winding temperature rises as the load factor increases. Region D is a region in which both the calculation result by the oil temperature and the calculation result by the winding temperature have not reached the allowable limit. Thus, depending on the usage of the equipment, the time at which the predicted value reaches the thermal tolerance may differ. This applies not only to the above-described relationship between the oil temperature and the winding temperature, but also to the relationship between the oil temperature or the winding temperature of the transformer 10 and the life loss.

  Therefore, in the third embodiment, the prediction calculation unit 121B performs calculation of a plurality of predictions among oil temperature prediction, winding temperature prediction, and life loss prediction. Further, among the plurality of calculation results predicted by the prediction calculation unit 121B, the prediction value selection unit 124 selects an element (oil temperature, winding temperature, or life loss with respect to the prediction value that reaches the thermal tolerance in the shortest time). Choose). The operation support information generation unit 122B generates, based on the element selected by the prediction value selection unit 124, the operation support information 123B including the continuous available time, the continuous allowable current value, the time limit allowable current value, and the like. The display control unit 130 generates information for displaying, on the display unit 220, the operation support information 123B for the value that reaches the thermal tolerance in the shortest time.

  FIG. 10 is a flowchart illustrating an example of the flow of processing in the monitoring support system 100B of the third embodiment. The flowchart shown in FIG. 10 is different from the flowchart shown in FIG. 5 in that the process of steps S120 to S150 is replaced with the process of steps S121 to S151. Therefore, the following description will be mainly given of the processing of steps S131 to S151.

  In the process of FIG. 10, the prediction calculation unit 121B calculates an oil temperature prediction value, a winding temperature prediction value, and a life loss prediction value for each time t based on the outside air temperature and oil temperature and the current value (step S121). Next, the operation support information generation unit 122B generates the possible continuation time based on each of the oil temperature prediction value, the winding temperature prediction value, and the life prediction value and the determination threshold (step S131). Next, the prediction value selection unit 124 selects one of the prediction value elements having the shortest possible continuation time (oil temperature, winding temperature, and the like) among the possible continuation times of the oil temperature prediction value, the winding temperature prediction value, and the life prediction value. Or life loss) is selected (step S132).

  Next, the prediction calculation unit 121B calculates a predicted value at each time t with respect to the selected element, using a plurality of virtual current values instead of the current value (step S141). Next, the operation support information generation unit 122B generates a continuous allowable current value or a time-limited allowable current value based on the calculated predicted value and the determination threshold (step S151), and executes the processing of step S160 and subsequent steps.

  As described above, according to the monitoring support system 100B of the third embodiment, in addition to the same effects as those of the first and second embodiments, a plurality of oil temperatures, winding temperatures, and life losses are included. Control taking into account the thermal tolerance of the elements of Therefore, the monitoring support system 100 can realize safer facility operation.

Fourth Embodiment
Next, a fourth embodiment of the monitoring support system will be described. In the following, the same names and reference numerals are used for the configuration having the same function as that of the second embodiment, and the specific description is omitted.

  FIG. 11 is a diagram illustrating an example of a monitoring support system 100C of the fourth embodiment. The monitoring support system 100C includes a transformer 10, a temperature sensor 20, a monitoring support system 100C, and a display device 200. The monitoring support system 100C is different from the monitoring support system 100A of the second embodiment in that an operation support information generation unit 122C is provided instead of the operation support information generation unit 122A. Therefore, in the following description, mainly the configuration of the operation support information generation unit 122C will be mainly described. Also, this configuration may be added to the first or third embodiment.

  The operation support information generation unit 122C includes, for example, control information for the control target device related to the transformer 10, in addition to the current value, the temperature, the continuous allowable current value, the time limit allowable current value, and the continuous available time. From the information, operation support information 123B including at least one is generated. The control target device related to the transformer 10 is, for example, a generator in the facility or other load system, a terminal device used by the operator, but may be the transformer 10 itself. The control information is, for example, a time for outputting alarm information, a suppression instruction, a shutoff instruction, control information to the control target device, and a remaining time from the current time until the control information is output.

  FIG. 12 is a diagram for describing control information generated based on the oil temperature predicted value calculated by the prediction calculation unit 121. The example of FIG. 12 shows the oil temperature predicted value with the passage of time similarly to FIG. The operation support information generation unit 122C generates control information for the control target device related to the transformer 10 based on the oil temperature predicted value and the determination threshold of the thermal tolerance limit.

  In the example of FIG. 12, the operation support information generation unit 122C generates a control signal for shutting off the generator at time t1 when the predicted oil temperature value reaches the determination threshold of the thermal tolerance limit. Further, the operation support information generation unit 122C generates a control signal for outputting a pre-cutoff alarm for shutting off the generator at time ta which is a predetermined time (Ta1) before time t1. The control signal may include, in addition to the above contents, a control signal for suppressing the generator, a warning signal before outputting the suppression signal, a control signal for blocking the transformer 10, and the like.

  In addition, the operation support information generation unit 122C may calculate, from the current time, a time until each control signal is output. In addition, the operation support information generation unit 122C may generate a continuous allowable current value, a time-limited current value, and a possible continuation time after it is assumed that the control signal is output.

  The display control unit 130 generates information for displaying the operation support information 123C on the display unit 220, and outputs the generated information to the display device 200. Thereby, the operator can grasp the time limit until the control information is output as the information according to the current facility state.

  FIG. 13 is a diagram for describing an operation support information display screen 223 displayed on the display unit 220 according to the fourth embodiment. The operation support information display screen 223 includes, for example, a regular operation information display area 223a, a measurement data display area 223b, an operation summary information display area 223c, an emergency operation information display area 223d, and an emergency operation status display area 223e. It is shown. The contents shown in the constant operation information display area 223a, the measurement data display area 223b, and the operation summary information display area 223c are in the above-described constant operation information display area 222a, measurement data display area 222b, and operation summary information display area 222c. Since the content is the same as that shown, the specific description is omitted.

  In the emergency operation information display area 223d, for example, time limit allowable current values for a plurality of elapsed times are shown in an emergency when it is assumed that the suppression signal or the shutoff signal to the generator is output. The emergency operation status display area 223e shows information on the emergency operation status of the monitoring support system 100C based on the current time. The information on the emergency operation condition is, for example, the remaining time until the generator suppression signal is output, the remaining time until the generator shutoff signal is output, and the remaining time until the transformer shutoff signal is output. . In the example of FIG. 13, since the situation in which the emergency operation is not performed is shown, in the emergency operation state display area 223e, the characters “no emergency operation” are shown.

  FIG. 14 is a flowchart showing an example of the flow of processing in the monitoring support system 100C of the fourth embodiment. The flowchart shown in FIG. 14 is different from the flowchart shown in FIG. 5 in that the process of step S152 is added. Therefore, in the following description, the process of step S152 will be mainly described.

  In the process of FIG. 14, the operation support information generation unit 122C generates a continuous allowable current value or a time-limited allowable current value based on the oil temperature predicted value and the determination threshold of the thermal tolerance (step S150). Next, the operation support information generation unit 122C generates control information for the control target device regarding the transformer 10 (step S152). In addition, the operation support information generation unit 122C generates operation support information including the continuous available time, the continuous allowable current value or the time limit allowable current value, and the control information (step S160), and executes the processing of step S170 and subsequent steps.

As described above, according to the monitoring support system 100C of the fourth embodiment, in addition to the same effects as in the first to third embodiments, the operator can calculate the remaining time until the control information is output. It becomes possible to grasp as information according to the present equipment state. Therefore, the monitoring support system 100B can urge the operator to carry out a countermeasure against the power flow such as switching of the system before the control information associated with the emergency operation is output.
Fifth Embodiment
Next, a fifth embodiment of the monitoring support system will be described. In the following, with respect to the configuration having the same function as that of the fourth embodiment, the same name and reference numeral will be used, and the specific description will be omitted.

  FIG. 15 is a diagram illustrating an example of a monitoring support system 100D according to the fifth embodiment. As compared with the monitoring support system 100C of the fourth embodiment, the monitoring support system 100D includes the temperature monitoring unit 114 in the acquisition unit 110D, and the operation support information generating unit 122D instead of the operation support information generating unit 122C. It differs in the point to prepare. Therefore, in the following description, mainly the configurations of the temperature monitoring unit 114 and the operation support information generation unit 122D will be mainly described. Also, this configuration may be added to any of the first to third embodiments.

  For example, when there is an abnormality in the temperature measured by the temperature sensor 20, there is a possibility that the temperature difference between the normal measurement value and the actual outside air temperature may be large. In addition, when the oil temperature prediction value, winding temperature, and life loss prediction value are calculated using abnormal values, each value of the continuous time, continuous allowable current value, and time limit allowable current value is also different from the actual value, so it is appropriate. Facilities can not be operated.

  Therefore, in the fifth embodiment, the temperature monitoring unit 114 monitors whether the oil temperature or the outside air temperature acquired by the temperature acquisition unit 112 is within a predetermined temperature range, and the oil temperature or the outside air temperature is a predetermined temperature. If the temperature is not within the range, it is determined that the temperature is abnormal, and the temperature information output to the prediction calculation unit 121 is changed. Further, when the temperature monitoring unit 114 acquires a plurality of oil temperatures or outside temperatures by the plurality of temperature sensors 20, the difference value between each oil temperature or the difference between the outside temperatures is equal to or greater than a predetermined threshold value It may be determined that the temperature is abnormal.

  For example, the temperature monitoring unit 114 includes a temperature holding unit 115. The temperature holding unit 115 is realized by, for example, a non-volatile storage medium such as a flash memory, a hard disk drive (HDD), or an SD card, or a volatile storage medium such as a random access memory (RAM) or a register. The temperature monitoring unit 114 holds, in the temperature holding unit 115, the temperature information that was within the predetermined range in the previous measurement. In addition, the temperature monitoring unit 114 changes the temperature exceeding the temperature range to the temperature information held by the temperature holding unit 115 until the state not within the predetermined temperature range reaches the predetermined time. Furthermore, when the state where the temperature acquired by the temperature acquisition unit 112 is not within the predetermined temperature range continues for a predetermined time or more, the temperature monitoring unit 114 changes the value to a preset fixed value. The temperature monitoring unit 114 outputs, for example, the temperature after being changed and the remaining time until being changed to a fixed value to the operation support information generating unit 122D.

  In addition to the information included in the operation support information 123C described above, the operation support information generation unit 122D can generate the operation support information 123D including temperature switching information based on the monitoring result by the temperature monitoring unit 114. The temperature switching information includes, for example, the result of monitoring whether the oil temperature or the outside air temperature is within the predetermined temperature range, or the previous temperature held when the oil temperature or the outside air temperature is not within the predetermined temperature range. It includes information or preset fixed temperature information, and the remaining time before changing the measured temperature to another value.

  FIG. 16 is a diagram for describing an operation support information display screen 224 displayed on the display unit 220 according to the fifth embodiment. The operation support information display screen 224 includes, for example, a regular operation information display area 224a, a measurement data display area 224b, an operation summary information display area 224c, an emergency operation information display area 224d, and an emergency operation status display area 224e. It is shown. The contents shown in the display areas other than the measurement data display area 224b are the continuous operation information display area 223a, the operation summary information display area 223c, the emergency operation information display area 223d, and the emergency operation status display area shown in FIG. Since the contents are the same as the contents shown in 223e, the specific description will be omitted.

  In the measurement data display area 224b, the outside air measurement value, the oil temperature measurement value, the current value, the winding temperature calculation value, and the oil temperature calculation value are shown. Here, it is assumed that the temperature monitoring unit 114 determines that one of the temperature sensors 20 for the outside air temperature is not within the temperature range. In this case, the previous temperature value 20.0 [° C.] which is the temperature switching information is displayed in the display portion of the outside air temperature measurement value. Further, in the measurement data display area 224b, the remaining time until changing to a fixed value (for example, 25.0 [° C.]) of the temperature information is displayed. In addition, when the remaining time until the change to the fixed value becomes 0 (zero), “25.0 ° C. (fixed value)” is displayed on the display portion of the measured value of the outside air temperature.

  FIG. 17 is a flow chart showing an example of the flow of processing in the monitoring support system 100D of the fifth embodiment. The flowchart shown in FIG. 17 is different from the flowchart shown in FIG. 5 in that the processes of steps S101 to S105 are added. Therefore, in the following, the description will be made mainly focusing on the processing of steps S101 to S105.

  In the process of FIG. 17, after the process of step S100, the temperature monitoring unit 114 determines whether the oil temperature and the outside air temperature acquired by the temperature acquiring unit 112 are within a predetermined temperature range (step S101). If the temperature is within the predetermined temperature range, the temperature monitoring unit 114 determines that the temperature is normal and causes the temperature holding unit 115 to hold the temperature value (step S102).

  If the oil temperature and the outside air temperature are not within the predetermined temperature range, the temperature monitoring unit 114 determines that the acquired temperature value is abnormal, and whether or not the abnormality of the temperature value continues for a predetermined time or more. It determines (step S103). If abnormality of the temperature value has not continued for a predetermined time or more, the temperature monitoring unit 114 changes the temperature value determined to be abnormal to the temperature held by the temperature holding unit 115 (step S104). When the abnormality of the temperature value continues for a predetermined time or more, the temperature monitoring unit 114 changes the temperature value determined to be abnormal to the temperature of the preset fixed value (step S105). Thereafter, the monitoring support system 100D executes the process of step S110 and subsequent steps.

  In the fifth embodiment, monitoring of the measurement value of the temperature sensor 20 is performed, but the current value acquisition unit 113 may be provided with a current value monitoring unit. In this case, the current value monitoring unit monitors whether the current value obtained from the current sensor 12 is abnormal, and when it is determined that the current value is abnormal, performs processing of changing the current value.

  As described above, according to the monitoring support system 100D of the fifth embodiment, in addition to the same effects as in the first to fourth embodiments, the operator can quickly grasp the abnormality of the temperature sensor 20. Can. Therefore, the operator can execute switching of the load on the equipment, maintenance of the equipment, and the like at appropriate timing.

Sixth Embodiment
Next, a sixth embodiment of the monitoring support system will be described. In the following, the same names and reference numerals are used for the configuration having the same function as that of the first embodiment, and the specific description is omitted.

  FIG. 18 is a diagram illustrating an example of a monitoring support system 100E according to the sixth embodiment. In this configuration, the monitoring support system 100E is different from the monitoring support system 100 of the first embodiment in that a communication unit 140E is provided instead of the communication unit 140. Therefore, in the following description, the configuration of the communication unit 114E will be mainly described. Also, this configuration may be added to any of the first to fifth embodiments.

  The communication unit 140E transmits not only the information to be displayed on the display unit 220 generated by the display control unit 130, but also the operation support information 123 generated by the operation support information generation unit 122 to the display device 200.

  The communication unit 210 outputs the operation support information 123 acquired through communication with the communication unit 140E to the display unit 220, associates the acquired operation support information 123 with the time information, and stores the operation support information 123 in the storage unit 230.

  The holding unit 230 is realized by, for example, a non-volatile storage medium such as a flash memory, an HDD, or an SD card, or a volatile storage medium such as a RAM or a register. Further, the holding unit 230 can hold the operation support history information by holding the operation support information 123 in association with the time information. Therefore, the operator can perform detailed analysis and verification in statistical processing and the like based on the history information.

  Regarding the flow of processing in the monitoring support system 100E of the sixth embodiment, among the processing of steps S100 to S180 in the monitoring support system 100 of the first embodiment, similar processing is performed for processing other than the processing of step S180. I do. In the process of step S180, the communication unit 140E not only transmits (outputs) the image generated to display the operation support information 123 on the display unit to the display device 200, but also transmits the operation support information 123 to the display device 200. Do. As a result, the monitoring support system 100E can cause the holding unit 230 to hold the operation support information 123 as well as display information related to the operation support information 123 on the display device 200.

  As described above, according to the monitoring support system 100E of the sixth embodiment, in addition to the same effect as that of the first embodiment, only information to be displayed on the display unit 220 is transmitted to the display device 200. Instead of transmitting the operation support information 123 to the display device 200, the user of the display device 200 (for example, the operator or the site worker) can verify the validity of the control or estimate the equipment state. Verification of the validity of the parameters used can be performed. The first to sixth embodiments described above may be combined with part or all of the other embodiments.

  According to at least one embodiment described above, the temperature acquisition unit 112 acquires temperature information from the temperature sensor 20 that measures the temperature of the transformer 10, and the current value acquisition unit 113 acquires the current value flowing through the transformer 10. State prediction unit 120 that predicts the future state of transformer 10 based on the temperature information acquired by temperature acquisition unit 112 and the current value acquired by current value acquisition unit 113; Display at least one of a current value that can be supplied to transformer 10 or a possible continuation time until the temperature of transformer 10 reaches an allowable limit, based on the future state of transformer 10 predicted by By having the display control unit 130 that generates information to be displayed on 220, it is possible to provide information for efficiently utilizing the facility capacity of the transmission and transformation equipment.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

  DESCRIPTION OF SYMBOLS 10 ... Transformer, 12 ... Current sensor, 20 ... Temperature sensor, 100 ... Monitoring support system, 110 ... Acquisition part, 111 ... Sensor information acquisition part, 112 ... Temperature acquisition part, 113 ... Current value acquisition part, 114 ... Temperature monitoring Unit 115 Temperature holding unit 120 State prediction unit 121 Prediction operation unit 122 Operation support information generation unit 130 Display control unit 140, 210 Communication unit 220 Display unit 230 Holding unit

Claims (9)

A temperature acquisition unit that acquires temperature information from a temperature sensor that measures the temperature of the transformer;
A current value acquisition unit that acquires a current value flowing to the transformer;
A state prediction unit that predicts a future state of the transformer based on the temperature information acquired by the temperature acquisition unit and the current value acquired by the current value acquisition unit;
Based on the future state of the transformer predicted by the state prediction unit, at least one of a current value that can be supplied to the transformer or a possible continuation time until the temperature of the transformer reaches an allowable limit A display control unit that generates information for causing one to be displayed on the display unit;
Monitoring support system provided with The display control unit supplies the transformer with a continuous allowable current value that can continuously be supplied to the transformer without the temperature of the transformer exceeding the allowable limit, and does not exceed the allowable limit within a predetermined time. Generating information for causing the display unit to display at least one of possible time limit allowable current values;
The monitoring support system according to claim 1. The state prediction unit predicts the time-limited allowable current value corresponding to a plurality of elapsed times from the current time.
The monitoring support system according to claim 2. The state prediction unit predicts a plurality of values among the oil temperature, the winding temperature, and the life loss of the transformer, and based on the predicted value, the value reaching the allowable limit in the shortest time. To generate at least one of a current value that can be supplied to the transformer, or the continuous time,
The surveillance support system according to any one of claims 1 to 3. The display control unit generates information for causing the display unit to display a time until the control target device related to the transformer is controlled when the continuous allowable current value is exceeded. ,
The surveillance support system according to claim 2 or 3. It further comprises a temperature monitoring unit that monitors whether the temperature information acquired by the temperature acquiring unit is included in a predetermined temperature range,
The display control unit displays the remaining time until the temperature information acquired by the temperature acquiring unit is changed when the temperature monitoring unit determines that the temperature information is not included in a predetermined temperature range. Generate information to be displayed on the department,
The monitoring support system according to any one of claims 1 to 5. The temperature information acquired by the temperature acquisition unit, the current value acquired by the current value acquisition unit, the current value that can be supplied to the transformer, and the continuable time until the temperature of the transformer exceeds an allowable limit A communication unit configured to transmit at least one of them to a device corresponding to the display unit;
The monitoring support system according to any one of claims 1 to 6. The computer is
Obtain temperature information from a temperature sensor that measures the temperature of the transformer,
Obtain the current value flowing to the transformer,
Predicting a future state of the transformer based on the acquired temperature information and the acquired current value;
Based on the predicted future state of the transformer, at least one of a current value that can be supplied to the transformer or a possible continuation time until the temperature of the transformer reaches an allowable limit is displayed on a display unit. Generate information for display,
Monitoring support method. On the computer
Get temperature information from a temperature sensor that measures the temperature of the transformer,
Get the current value flowing to the transformer,
Predicting a future state of the transformer based on the acquired temperature information and the acquired current value;
Based on the predicted future state of the transformer, at least one of a current value that can be supplied to the transformer or a possible continuation time until the temperature of the transformer reaches an allowable limit is displayed on a display unit. Generate information for display,
Monitoring support program.

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