JP2002251936A - Power system protection control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To resolve a problem that installation of a dedicated measurement device for measuring the electrode consumption rate of a monitoring object apparatus not only needs a facility expense but is also troublesome for an operator because he must go to the measurement device to periodically confirm the measurement values. SOLUTION: The electrode consumption amount of a breaker is calculated from apparatus operation information or current data inputted in a protection control device and thereby the checking time of the breaker is calculated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power system protection control system, and more particularly to a power system protection control system capable of predicting an inspection time of a device to be monitored.

[0002]

2. Description of the Related Art In general, a substation is provided with a power switching device, a transformer or an oil-filled device such as a reactor in order to "enter" and "cut off" a high-voltage main circuit such as a gas-insulated switchgear. I have. Such equipment is required to have improved reliability, reduced maintenance, prevention of accidents, and early response in the event of an accident. The prior art described in Japanese Patent Application Laid-Open No. 64-14832 and the like has provided a dedicated measuring device for measuring an electrode wear rate from a main circuit current of a device to be monitored and a circuit breaker interlocking signal.

[0003]

In the above-mentioned conventional apparatus, a dedicated measuring device is required for measuring the electrode wear rate, which not only requires an equipment cost, but also requires a periodic installation to the measuring device installation location. The operator had to go to check the measured values, which was troublesome for the operator.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to determine the amount of electrode wear of a circuit breaker based on the operation timing of a monitored device such as a circuit breaker and the main circuit current value input to a protection control device. It is an object of the present invention to provide a power system protection control system that calculates and thereby calculates an inspection time of a monitored device such as a circuit breaker.

[0005]

In order to achieve the above object, an invention of a power system protection control system according to claim 1 comprises at least one protection control device for protecting and controlling a monitored device, And a remote monitoring device connected to the control device via a transmission system and remotely monitoring the protection control device, wherein the protection control device includes monitoring information taken from the monitored device. Is performed by using the inspection time calculation processing means to calculate the inspection time of the monitored device to generate inspection time data. Thereby, the device inspection time data can be generated.

According to a second aspect of the present invention, there is provided an electric power system protection control system for protecting at least one device to be monitored, wherein the at least one protection control device is connected to the protection control device via a transmission system. In a power system protection control system including a remote monitoring device that performs remote operation monitoring of the protection control device, the protection control device includes a unit that transfers monitoring information taken from the monitored device to the remote monitoring device. In addition, the remote monitoring device performs an inspection time prediction calculation of the monitored device to generate inspection time data of the device. Thereby, in the remote monitoring device, the device inspection time data can be generated.

In the power system protection control system according to a third aspect of the present invention, the inspection time data is a cumulative contact wear amount data calculated by using the energized current data and the contact operation timing data of the monitored device. The inspection time data is based on the inspection timing. Thereby, inspection time data based on the accumulated contact wear amount data of the monitored device can be created.

According to a fourth aspect of the present invention, in the power system protection control system according to the first aspect, at least one device includes device inspection correlation data for each device indicating a relationship between the accumulated contact wear amount data and the inspection time. It is provided with a holding means. Thereby, inspection time data can be created with reference to the equipment inspection correlation data for each device.

Further, the power system protection control system according to claim 5 transmits the equipment inspection correlation data indicating the correlation between the measurement data taken and measured by the protection control device from the equipment and the inspection time of the equipment. It is provided with a means for obtaining the information via the Internet. As a result, the inspection timing data can always be created with reference to the latest device inspection correlation data.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) (corresponding to claims 1, 3, and 4) FIG. 1 is a block diagram showing a configuration of a power system protection control system according to a first embodiment. is there.

In FIG. 1, a power system protection control system according to this embodiment comprises a protection control device 1 and a remote monitoring device 2.
Are connected via a transmission system 3. The protection control device 1 fetches monitoring data 4a such as device operation data, current, and voltage of the monitoring target device 4 in addition to the protection control arithmetic processing unit 10 for performing the original protection control, and Inspection time prediction calculation processing means 11 for predicting and calculating an inspection time, an equipment inspection correlation data unit 12 representing a correlation between the operation progress of equipment and a recommended time for equipment inspection, and an inspection time calculated by the inspection time prediction calculation processing means 11 The transmission / reception processing means 13 for transmitting data and the monitoring data 4a to the remote monitoring device 2 and receiving information from the remote monitoring device 2 to the protection control device 1, and the inspection time prediction calculation processing means 11 A display 14 for displaying the calculated inspection time data.

FIG. 2 is a flowchart showing the processing contents of the inspection time prediction calculation processing means 11 in this embodiment. In the equipment inspection correlation data section 12 of the present embodiment, data indicating the correlation between the accumulated contact wear amount and the recommended time for equipment inspection is stored in advance.

Next, the operation of the inspection time prediction calculation processing means 11 in this embodiment will be described with reference to FIG. Inspection time prediction calculation processing means 11 fetches current data and operation information from monitored device 4 in step 21, and obtains the cumulative energizing current based on the current data in the next step 22.

Further, in the next step 23, the contact operation time is obtained based on the operation information, and in step 24, the accumulated contact wear is calculated from the accumulated conduction current and the contact operation time (accumulated contact wear from the accumulated conduction current and the contact operation time). An example of a method for calculating the amount is described in JP-B 64-14832.

Further, in step 24, the equipment inspection correlation data section 12 is referred to. In the last step 25, the inspection time is calculated from the accumulated contact wear amount and the equipment inspection correlation data. In this way, the inspection time data calculated by the inspection time prediction calculation processing means 11 is transmitted to the remote monitoring device 2 via the transmission system 3 by the transmission / reception processing means 13 or displayed on the display 14.

In the above description, a single protection control device has been described. However, a plurality of protection control devices may be provided with a device inspection time prediction calculating means. Further, the operation control data and the monitoring data of the equipment are taken in by the protection control device 1 and transferred to the remote monitoring device 2 by the transmission / reception processing means 13,
The remote monitoring device 2 may be configured to perform a device inspection time prediction calculation.

[0017] These functions can be added to existing power system monitoring and control systems without significant changes. In other words, even if the existing protection control device does not have the function of predicting the equipment inspection time, it captures the device operation information and current data, etc., so it is more economical than introducing a device monitoring remote operation system Can be added to the function of predicting the state of equipment inspection time,
This can contribute to quicker and easier response in the event of an accident.

Further, in the present embodiment, the remote monitoring device is installed at a place away from the substation or the like where the protection control device is installed. However, the present invention can be applied to a case where the remote monitoring device is installed in the same substation premises as the protection control device. .

(Second Embodiment) (corresponding to claim 1) Next, a second embodiment will be described. Since the system configuration of this embodiment is the same as that of the first embodiment shown in FIG. 1, the description of the configuration is omitted here, and the function will be described based on the flowchart of FIG.

FIG. 3 is a flowchart showing the processing contents of the inspection time prediction calculation processing means 11 in this embodiment. In the device inspection correlation data section 12 of the present embodiment, data indicating the correlation between the cumulative number of operation times of the device and the recommended time for device inspection is stored.

In FIG. 3, the inspection time prediction calculation processing means 11 fetches the device operation information from the monitored device 4 in step 31 and calculates the cumulative number of operations based on the device operation information in step 32. Further, in step 33, the data of the equipment inspection correlation data section 12 is referred to, and in step 34, the inspection time is calculated from the accumulated number of operations and the data of the equipment inspection correlation data section 12.

Also in this embodiment, the inspection time data calculated by the inspection time prediction calculation processing means 11 is transmitted to the remote monitoring device 2 via the transmission system 3 by the transmission / reception processing means 13 or displayed on the display 14. . The effect of this embodiment is the same as that of the first embodiment.

(Third Embodiment) (corresponding to claim 1) Further, a third embodiment will be described with reference to FIGS. The system configuration of the present embodiment includes first, second
Since the configuration is the same as that of FIG. 1, the description of the configuration is omitted here, and the function will be described based on the flowchart of FIG. Equipment inspection correlation data section 12 of the embodiment shown in FIG.
In this example, data indicating the correlation between the cumulative current supplied to the equipment and the recommended time for equipment inspection is stored in advance.

In FIG. 4, the inspection time prediction calculation processing means 11 fetches current data from the monitored device 4 in step 41, obtains an accumulated energizing current based on the current data in step 42, With reference to the inspection correlation data section 12, an inspection time is calculated from the accumulated energizing current and the equipment inspection correlation data section 12 in step 44.

The inspection time data calculated by the inspection time prediction calculation processing means 11 is transmitted to the transmission / reception processing means 1
3, the data is transmitted to the remote monitoring device 2 via the transmission system 3 or displayed on the display 14. The effect of this embodiment is the same as that of the first embodiment.

(Fourth Embodiment) (corresponding to claim 1) A fourth embodiment will be described with reference to FIGS. However, since the system configuration of this embodiment is the same as that of the first and second embodiments shown in FIG. 1, the description of the configuration is omitted here, and the function will be described based on the flowchart of FIG. FIG. 5 is a flowchart showing the processing contents of the inspection time prediction calculation processing means 11 in the present embodiment. In the device inspection correlation data section 12 of the present embodiment, data indicating the correlation between the contact operation timing of the device and the recommended time of the device inspection is stored in advance.

In FIG. 5, the inspection time prediction calculation processing means 11 fetches the device operation information from the monitored device 4 in step 51, obtains the contact operation timing based on the operation information in step 52, and in step 53 With reference to the equipment inspection correlation data section 12, an inspection time is calculated from the contact operation timing and the equipment inspection correlation data section 12 in step 54.

The inspection time data calculated by the inspection time prediction calculation processing means 11 is transmitted to the transmission / reception processing means 1
3, the data is transmitted to the remote monitoring device 2 via the transmission system 3 or displayed on the display 14.

(Fifth Embodiment) FIG. 6 is a block diagram showing a configuration of a power system protection control system according to a fifth embodiment. In FIG. 6, the protection control system according to the present embodiment is based on FIG. 1 in which a protection control device 1 and a remote monitoring device 2 are connected via a transmission system 3. 13
Is connected to the maintenance company server 5 in addition to the remote monitoring device 2 via the transmission system 3. With this configuration, the transmission / reception processing means 13 is connected to the maintenance company server 5.
Inspection time data can also be transmitted.

The maintenance company server 5 is provided with an equipment inspection correlation data section 51, in which the equipment inspection correlation data of the monitored equipment is stored. The maintenance company constantly maintains the data of the device inspection correlation data unit 51, and when the data of the device inspection correlation data unit 51 is changed, the protection control device 1 that protects and controls the corresponding device. Transmit the equipment inspection correlation data.

In the protection control device 1 having received the equipment inspection correlation data from the maintenance company server 5, the equipment inspection correlation data is written into the equipment inspection correlation data section 12 by the transmission / reception processing means 13. Operations other than the above are the same as those of the first embodiment.

With the above-described configuration, the equipment inspection time data generated by the power system protection control system can be promptly transmitted to the maintenance company, so that labor for equipment maintenance can be reduced and quick response in the event of an accident can be achieved. It can contribute to the simplification and simplification. Also, every time the equipment inspection correlation data is updated, it is sent from the maintenance department to the protection control device, so that the inspection time prediction calculation can always be performed using the optimum equipment inspection correlation data, and the reliability of the prediction calculation and the power system The reliability of the protection control system can also be improved. Furthermore, since the equipment inspection correlation data, which is different for each equipment, can be intensively maintained at one place, the maintainability, creation efficiency, and distribution efficiency of the equipment inspection correlation data itself are also improved. In this embodiment, the equipment inspection correlation data is stored in the maintenance company server 5.
However, a configuration in which the data is stored in the remote monitoring device 2 and maintained is also conceivable.

[0033]

As described above, according to the present invention, a power system monitoring and control system can be comparatively easily and economically provided.
A function for predicting and calculating the equipment inspection time can be added, which contributes to labor saving of equipment maintenance and quick and easy response in the event of an accident.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a power system protection control system common to first to fourth embodiments of the present invention.

FIG. 2 is a flowchart showing processing contents of an inspection time prediction calculation processing means 11 according to the first embodiment.

FIG. 3 is a flowchart showing processing contents of an inspection time prediction calculation processing means 11 according to a second embodiment.

FIG. 4 is a flowchart showing processing contents of an inspection time prediction calculation processing means 11 according to a third embodiment.

FIG. 5 is a flowchart showing processing contents of an inspection time prediction calculation processing means 11 according to a fourth embodiment.

FIG. 6 is a configuration diagram of a power system protection control system according to a fifth embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 protection control device 2 remote monitoring device 3 transmission system 4
... Monitored equipment, 5 ... Maintenance company server, 11 ... Inspection time prediction calculation processing means, 12 ... Equipment inspection correlation data section,
13: Transmission / reception processing means, 14: Display, 51: Equipment inspection correlation data section.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Osamu Hasegawa 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in the Fuchu Plant, Toshiba Corporation 5G034 AA14 AC04 AC08 5G064 AA04 AB03 AC05 AC08 BA07 CB06 DA02 5G066 AA09 AA20 AE01 AE07 AE09 5H223 AA19 DD07 EE21 EE22 FF08 FF09

Claims (5)

[Claims] 1. A protection control device for protecting and controlling a monitoring target device, and a remote monitoring device connected to the protection control device via a transmission system for remotely monitoring the protection control device. In the power system protection control system, the protection control device performs inspection time prediction calculation of the monitored device using monitoring time prediction calculation processing means for monitoring information taken from the monitored device, and generates inspection time data. A power system protection control system characterized in that: 2. A protection control device for protecting and controlling a device to be monitored, and a remote monitoring device connected to the protection control device via a transmission system for remotely monitoring the protection control device. In the power system protection control system, the protection control device includes a unit configured to transfer monitoring information taken from the monitoring target device to the remote monitoring device, and the remote monitoring device performs an inspection time prediction calculation of the monitoring target device. And a power system protection control system configured to generate inspection time data of the equipment. 3. The inspection timing data according to claim 1, wherein the inspection timing data is data based on accumulated contact wear amount data calculated by using current flowing data and contact operation timing data of the monitored device. Item 3. An electric power system protection control system according to Item 2. 4. The apparatus according to claim 1, wherein at least one of the protection control device and the remote monitoring device holds equipment inspection correlation data indicating a correlation between cumulative contact wear amount data of each equipment and an inspection time. 3. The power system protection control system according to claim 1 or 2. 5. The device according to claim 1, wherein the protection control device acquires, via a transmission system, device inspection correlation data indicating a correlation between measurement data taken and measured from the device to be monitored and an inspection time of the device. The power system protection control system according to claim 1 or 2.