JPS61177133A - Centralized monitoring system for dynamotor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention is applicable to emergency power generation equipment installed in buildings in a city, or regular and emergency power generation equipment installed in a remote island, which are located far apart from each other. The present invention relates to a centralized monitoring system for power generation equipment that centrally monitors a large number of power generation equipment with a single central device.

<Prior art> Conventional power generation equipment, such as emergency power generation equipment on remote islands, is equipped with a separate display section for indicating an abnormal situation, a control section for controlling operation, and an operation section for each power generation device. Therefore, in order to carry out maintenance and inspections, engineers must visit each power generation device on a regular basis and inspect the power generation device directly, which may delay the discovery of abnormal situations. However, it required a large number of personnel, which was a heavy burden.

In addition, whenever an abnormal situation occurs in one of the power generating equipment, a technician visits the power generating equipment to inspect and repair it, but until the technician actually works on the power generating equipment, there is no indication that the abnormal situation has occurred. In many cases, the state of the situation is not known accurately, and it takes time and effort to take an appropriate response, which has the disadvantage of being inefficient.

<Purpose of the Invention> The present invention has been made in view of the above-mentioned problems, and is capable of maintenance, inspection, and repair by making it possible to quickly deal with abnormal situations of a large number of power generation devices with a small number of personnel. The purpose is to improve efficiency.

<Structure of the Invention> In order to achieve the above object, the present invention uses a plurality of power generating devices as terminals and centrally monitors these power generating devices through a telephone line with a single central device, and each power generating device has a It is equipped with means for detecting abnormalities, etc., a control unit for controlling operation, and a terminal device for transmitting signals such as abnormality alarm signals and receiving operation command signals.On the other hand, the center device receives abnormality alarm signals from each power generation device. This system constitutes a centralized monitoring system for power generation equipment, comprising a communication processing unit that receives the command signals and sends operation command signals, a control unit that controls the communication processing unit, a display unit, a recording unit, and an operation unit. be.

<Example> Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

FIG. 1 is a configuration diagram of a centralized monitoring system for emergency power generators according to the present invention, and the system includes a plurality of power generators 1 installed at remote locations, and these power generators. 1. ...and telephone line 2. Each power generation device 2 is provided with an engine 4 such as a diesel engine and a generator 5 driven by the engine 4. There is.

FIG. 2 is a configuration diagram of the power generation device 1. As shown in this configuration diagram, each power generation device 1 includes a generator set 6 consisting of an engine 4 and a generator 5, and the necessary components of the generator set 6. 7.8.9 Abnormal situation detection means installed at various locations
, control panel 1G, terminal device 11, and data converter 1
2.

In this example, the engine 4 is a diesel engine, but a gas engine or a gas turbine engine could be used.

The detection means 7, 8.9 include an abnormality detection means 7 that outputs an abnormality alarm signal, an operation state detection means 8 that outputs an operation state signal, and a measurement data detection means that outputs various measurement data signals during operation. There are 3 types: 9. The abnormality detection means 7 includes a door switch for detecting the presence or absence of an intruder;
Fire detector, lubricating oil pressure switch to detect a drop in lubricating oil pressure, cooling water temperature switch to detect a rise in cooling water temperature, fuel oil float switch to detect a drop in fuel oil level, speed to detect overspeed. There are sensors, overcurrent detectors, etc., and in addition, the abnormality detection means 7 outputs a generator abnormality signal and an engine start failure signal. The operating state detection means 8 includes an operation detection means that detects that the engine 4 and the generator 5 are in operation and outputs an operation signal, and a power outage detection means that detects a power outage of the commercial power source and outputs a power outage signal. There is a detection means. Furthermore, the measurement data detection means 9 includes an exhaust temperature sensor, a lubricating oil pressure sensor, a lubricating oil temperature sensor, a cooling water temperature sensor, a room temperature sensor, a frequency measuring device, a voltmeter, and an ammeter.

The control panel 10 includes a control section 13 that controls the operation of the engine 4 and the generator 5, a display section 14 that displays measurement data, etc., and a display section 14 that allows users, engineers, etc. to directly operate the operation of each power generation device l. Control section! 5. The control unit 13 starts the operation of the engine 4 when a power outage signal is input from the operating state detection means 8, and stops the operation of the engine 4 when a required alarm signal is input from the abnormality detection means 7. When a driving command signal from the device 3 is input, operation of the engine 4 is stopped or started in accordance with the driving command signal.

The terminal device 11 transmits the information to the center device 3 based on the operating status signal or a required abnormality alarm signal. or in response to a call from the center device 3, the signals from the abnormality detection means 7, the driving state detection means 8, and the measured data detection means 9 are digitized through the telephone line 2 and sent to the center device. At the same time, the central device 3 receives an operation command signal from the center device 3 and outputs it to the control section 13 . The data converter 12 is
In the preceding stage of the terminal device 11, the measurement data signal from the measurement data detection means 9 is amplified, converted into voltage/current, and supplied to the terminal device 11.

FIG. 3 is a configuration diagram of the center device 3, which receives alarm signals, operating status signals, and measurement data signals from each power generation device l, and also sends an operation command signal to any of the power generation devices l. a communication processing unit 16 that transmits the communication processing unit 16; a control unit 17 that controls the operation of the communication processing unit 16 and the like;
A display unit 18 that displays alarm signals and operating status signals, a display unit 19 that displays measurement data, a printer 20 that prints and records measurement data (all), and a magnetic recording unit 21 that magnetically records measurement data. An operating section 22 is provided which is operated to issue an operation command signal to the power generating device 1 and to control the display section 18, 19, a recording section such as a printer 20, etc.

Next, the operation of the above configuration will be explained. When commercial power is normally supplied to the generator l, the operation of the engine 4 is stopped; however, when the commercial power is interrupted, the control unit 1
Since the power outage signal is input to 3 from the operating state detection means,
The control unit 13 starts the engine 4 based on this power outage signal. At the same time, the terminal device 11 calls the center device 3, transmits an operating state signal, and notifies that the power generating device 1 has started operating.

On the other hand, the center device 3 receives this driving state signal and displays it on the display section 18. When the transmission of the operating state signal is completed, the connection of the telephone line 2 is cut off, but as the operating signal is input, the control section 17 of the center device 3 transmits the power to the power generating device at predetermined time intervals through the communication processing section 16. 1 and causes the power generation device 1 to transmit measurement data.

That is, the control unit 17 controls the power generation device l two minutes after the start of operation of the power generator l.
The power generating device 1 is called at short intervals immediately after the start of operation, such as after opening at 2:00 a.m., and then at longer intervals thereafter. Send measurement data from. This measurement data is displayed on the measurement data display section 19 in the center device 3, and
The information is recorded on a magnetic recording medium such as a magnetic disk by the magnetic recording unit 21, and printed on recording paper by the printer 20 as required.

When an abnormal situation occurs in the power generation device 1 after the start of operation, the terminal device 11 immediately calls the center device 3 based on the abnormality alarm signal and notifies the center device 3 of the occurrence of the abnormal situation. At this time, if the abnormality alarm signal is a lubricating oil pressure drop signal, a cooling water temperature rise signal, or an overspeed signal, the control unit 13 of the power generator 1 outputs an operation stop command signal based on these signals. Then, the operation of the engine 4 is stopped. When the abnormality alarm signal is an overcurrent signal, the control unit 13 cuts off the generator 5 from the load.

Regarding other abnormality warning signals, the control unit 13 does not perform any particular control operation, and the engine 4 continues to operate.

On the other hand, this abnormality alarm signal is received by the communication processing section 16 of the center device 3 and displayed on the display section 18. The engineer in charge of the center device 3 investigates the details of the abnormal situation from the type of abnormal alarm signal and the measurement data up to that point, considers countermeasures, and takes appropriate countermeasures. In this case, at the discretion of the engineer, the center device 3 may send an operation stop signal to stop the engine 4, which is still in operation.

The power generator 3 is operated during a power outage of the commercial power supply as described above, and is also operated as appropriate for maintenance and inspection. This maintenance operation is an operation performed without applying a load to the generator 5, and includes (a) an automatic maintenance operation that is automatically performed at fixed intervals on each power generator l, and (b) a user etc. There are three types of maintenance operations: (c) manual maintenance operation performed manually by the operator, and (c) remote maintenance operation performed by commands from the center device 3. Since the operations for each of these maintenance operations are substantially the same, the operations for (c) remote maintenance operation performed in response to a command from the center device 3 will be explained.

When a technician instructs maintenance operation of a required power generation device l by operating the operation unit 22 in the center device 3, the operation command signal is transmitted to the required power generation device l through the communication processing unit 16. In the power generation device 1, the terminal device 11
receives the driving command signal and outputs it to the control section 13. The control unit 13 controls the generator 5 based on this maintenance operation command signal.
The engine 4 is started with the engine 4 cut off from the load. When the operation of the generator 4 is started in this way, an operation signal is transmitted from the power generator 1 to the center device 3. Based on this operation signal, the control section 17 of the center device 3 calls the power generation device 1 again at predetermined time intervals through the communication processing section 16, and causes the power generation device 1 to transmit measurement data. The operation in this case is the same as the operation when the commercial power supply fails. After a certain period of time has passed after starting maintenance operation,
The terminal device 11 of the power generator I detects the elapse of this time and outputs an operation stop signal, and this operation stop signal causes the engine 4 to
operation stops.

In addition, when an abnormality alarm signal is transmitted to the center device 3 from the door switch of the abnormality detection means 7 in the above embodiment, the control unit 13 can also prevent the engine 4 from performing maintenance operation based on the abnormality alarm signal.

<Effects of the Invention> As described above, according to the present invention, since the operating status of a plurality of power generating devices and the occurrence of an abnormal situation are displayed on the display section of the center device, personnel who patrol and inspect each power generating device can The minimum number of personnel required to monitor the power generation equipment is the staff stationed at the center equipment, which can significantly reduce the number of personnel required. Since the state of the abnormality can be accurately grasped by examining the measurement data up to that point, it is possible to take appropriate measures and perform maintenance, inspection, and repair efficiently.

In addition, as in the example, when one of the power generating units starts operation, the measurement data is transmitted at short intervals immediately after the start of operation, and at longer intervals thereafter).
1 Etozekuma is able to collect detailed measurement data when the engine is started at Suyoru, making it possible to accurately inspect the engine and generator.

Furthermore, as in this embodiment, if the engine operation is automatically stopped after a certain period of time has elapsed after maintenance operation has started, the engine will not continue to operate for longer than necessary. This method is efficient and safe, and since the method of collecting measurement data is the same regardless of the maintenance operation, it is convenient for comparing and examining measurement data.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the central monitoring system of the present invention, FIG. 2 is a block diagram of a power generation device, and FIG. 3 is a block diagram of a center device. 1... Generator, 2... Telephone line, 3... Center device, 4... Engine, 5... Generator, 7...
Abnormality detection means, 8... Operating state detection means, 9... Measurement data detection means, 11... Terminal, 13... Control section, 16... Communication processing section, 17... Control section , 18・
...display section for alarm signals, etc., 20.21...recording section (2
0...Printer, 21...Magnetic recording section), 22...
・Operation section.

Claims (3)

[Claims] (1) A system that centrally monitors multiple power generators installed in remote locations from a single central device via telephone lines, and each of the power generators is equipped with an abnormality alarm signal, an operating status signal, and an operating state signal. a control unit that controls the operation of the power generation device based on a predetermined abnormality alarm signal from the detection means or an operation command signal from a center device; and a control unit that outputs the abnormality alarm signal through a telephone line. A terminal device is provided that transmits an operating status signal or a measurement data signal to the center device, and also receives an operation command signal from the center device and outputs it to the control section. a communication processing unit that receives an abnormality alarm signal, an operating state signal, and a measurement data signal and transmits an operation command signal to one of the power generation devices; a control unit that controls the operation of the communication processing unit;
A power generation device comprising: a display section that displays at least an alarm signal; a recording section that records at least measured data; and an operation section that is operated to issue an operation command signal to one of the power generation devices. Centralized equipment monitoring system. (2) In the centralized monitoring system for power generation equipment according to claim 1, when the control unit of the center device starts operation in any of the power generation equipment, immediately after the start of operation, the control unit performs the following operations at short intervals: After that, the power generation device is called up through the communication processing unit at longer intervals, and the power generation device transmits a measurement data signal. (3) In the centralized monitoring system for power generation equipment according to claim 1 or 2, the terminal device of each power generation equipment starts maintenance operation automatically or by a command from the central device, and A centralized monitoring system for power generation equipment that outputs an operation stop signal to automatically stop operation after a certain period of time has passed after the start of operation.