Spark discharge monitoring system and spark discharge detection device

1 . A spark discharge monitoring system, comprising:

a receiving unit;

a control unit; and

a display unit,

wherein:

the receiving unit receives spark information on a spark caused by sliding between a collector ring and a brush, the spark being detected by a spark detection device based on a current generated by the spark, and

the control unit:

acquires a temporal change of a spark number based on the spark information,

corrects the spark number based on operation data including at least data on a detected field current associated with generation of sparks, and

displays the temporal change of the corrected spark number on the display unit.

2 . The spark discharge monitoring system according to claim 1 , further comprising:

an input unit,

wherein the control unit:

displays a reset button on the display unit,

displays an alarm on the display unit when the spark number is equal to or larger than a first threshold, and

cancels the alarm displayed on the display unit when receiving an input to the reset button via the input unit in a state where the alarm is displayed.

3 . The spark discharge monitoring system according to claim 1 , wherein the control unit:

displays first information on the display unit when the spark number is less than a first threshold, and

displays second information on the display unit when the spark number is equal to or larger than the first threshold.

4 . The spark discharge monitoring system according to claim 1 , wherein the control unit:

displays first information on the display unit when the spark number is less than a second threshold,

displays third information on the display unit when the spark number is equal to or larger than the second threshold and less than a third threshold larger than the second threshold, and

displays second information on the display unit when the spark number is equal to or larger than the third threshold.

5 . The spark discharge monitoring system according to claim 2 , wherein the control unit sets the first threshold based on the information received via the input unit.

6 . The spark discharge monitoring system according to claim 1 , wherein the control unit:

calculates a plurality of the spark numbers based on a plurality of pieces of the spark information received at a same timing,

extracts a maximum value from the plurality of the spark numbers, and

displays a temporal change of the extracted maximum value on the display unit.

7 . The spark discharge monitoring system according to claim 4 , wherein the control unit displays the second information and the third information on the display unit when the spark number is equal to or larger than the second threshold and a number of continuous occurrences of the spark number exceeds a fourth threshold.

8 . The spark discharge monitoring system according to claim 1 , wherein the control unit changes and displays a time span of a temporal change on the display unit.

9 . The spark discharge monitoring system according to claim 1 , wherein the spark detection device comprises:

an antenna configured to detect spark discharge; and

a transmission unit configured to transmit the spark information to the receiving unit.

10 . The spark discharge monitoring system according to claim 9 , wherein:

the spark detection device further comprises a signal processing unit, and

the signal processing unit:

acquires a count number at which an intensity of discharge exceeds a fifth threshold among the detected spark discharges,

calculates the spark number based on the count number exceeding the fifth threshold, and

transmits the spark number as the spark information to the receiving unit.

11 . The spark discharge monitoring system according to claim 9 , wherein:

the spark detection device further comprises a signal processing unit, and

the signal processing unit calculates the spark number by a calculation formula including a second correction coefficient based on a distance to a spark generation place.

12 . The spark discharge monitoring system according to claim 9 , wherein:

the spark detection device further comprises a signal processing unit, and

the signal processing unit calculates the spark number by a calculation formula including a first correction coefficient based on at least one of temperature information or humidity information.

13 . The spark discharge monitoring system according to claim 1 , wherein the control unit calculates the spark number by a calculation formula including a first correction coefficient based on at least one of temperature information or humidity information of the spark detection device that has transmitted the spark information.

14 . The spark discharge monitoring system according to claim 1 , wherein the control unit calculates the spark number by the spark detection device that has transmitted the spark information and a calculation formula including a second correction coefficient based on a distance to a spark generation place.

15 . The spark discharge monitoring system according to claim 1 , wherein the control unit performs control to lower an operation output of a generator when the spark number is equal to or larger than a sixth threshold.

16 . The spark discharge monitoring system according to claim 1 , wherein the control unit controls at least one of an air conditioner or a humidifier in a generator collector chamber when the spark number is equal to or larger than a sixth threshold.

17 . The spark discharge monitoring system according to claim 1 , wherein the control unit corrects the spark number to be smaller as the field current increases.

18 . The spark discharge monitoring system according to claim 1 , wherein the control unit:

predicts a temporal change of a future field current and a temporal change of a future spark number based on operation plan data, the operation plan data including data related to plans of future operation of the collector ring and the brush for power generation, and

displays the temporal change of the future field current and the temporal change of the future spark number on the display unit.

19 . The spark discharge monitoring system according to claim 1 , wherein the control unit issues an alarm when the corrected spark number deviates from the spark number to such an extent that a difference from a predetermined value is larger than a predetermined deviation value.

20 . A spark discharge monitoring system, comprising:

a receiving unit;

a control unit; and

a display unit,

wherein:

the receiving unit receives spark information on a spark caused by sliding between a collector ring and a brush, the spark being detected by a spark detection device based on a current generated by the spark, and

the control unit:

acquires a temporal change of a spark number based on the spark information,

predicts a future spark number based on operation plan data, the operation plan data including data related to plans of future operation of the collector ring and the brush for power generation, and

displays at least the temporal change of the future spark number on the display unit.