JPH0250699B2 - - Google Patents

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 remote islands, which are located in locations 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. In such cases, maintenance inspections require engineers to 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 and was a heavy burden.

Additionally, whenever an abnormality occurs in any of the power generating equipment, a technician visits the power generating equipment to inspect and repair it, but it is not until the technician actually visits the power generating equipment. In many cases, the nature of abnormal situations cannot be accurately determined, and it takes time and effort to respond appropriately, resulting in poor efficiency.

Particularly in the case of emergency power generators, etc., rapid start-up is required, and it is necessary to avoid situations where normal operation cannot be continued due to some abnormality as much as possible, so it is necessary to accurately understand abnormal situations. It is important to respond appropriately.

<Object 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 centrally monitors a plurality of power generation devices as terminals by a single central device through a telephone line, and each power generation 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. A central monitoring system for power generation equipment is constructed by comprising a communication processing unit that receives the information such as the command signal and transmits the operation command signal, a control unit that controls the communication processing unit, a display unit, a recording unit, and an operation unit. This allows the generator to automatically and accurately start operating during a power outage and stop when an abnormality occurs.

<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 an emergency power generator according to the present invention, and the system includes:
A plurality of power generating devices 1,... installed at locations remote from each other, these power generating devices 1,..., and a 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.

FIG. 2 is a configuration diagram of the power generation device 1, and 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,
Abnormal situation detection means 7, 8, 9 installed at various locations in the generator set 6, a control panel 10,
It includes a terminal device 11 and a data converter 12.

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

The detection means 7, 8, and 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. 9 and 3
There are seeds. The abnormality detection means 7 includes a door switch that detects the presence or absence of an intruder, a fire detector,
A lubricating oil pressure switch that detects a drop in lubricating oil pressure, a cooling water temperature switch that detects a rise in cooling water temperature, a fuel oil float switch that detects a drop in fuel oil level, a speed sensor that detects overspeed, and an overcurrent. 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. Further, as the measurement data detection means 9, an exhaust temperature sensor,
There are lubricating oil pressure sensors, lubricating oil temperature sensors, cooling water temperature sensors, room temperature sensors, frequency meters, voltmeters, and ammeters.

The control panel 10 includes an engine 4 and a generator 5.
, a display section 14 that displays measurement data, etc., and an operation section 15 that allows a user, a technician, etc. to directly control the operation of each power generation device 1 . 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 is input from the device 3, operation of the engine 4 is stopped or started depending on the driving command signal.

The terminal device 11 calls the center device 3 based on an operating status signal or a required abnormality warning signal, or performs transmission and reception in response to a call from the center device 3, and communicates with the abnormality detection means 7, Each signal from the driving state detecting means 8 and the measured data detecting means 9 is digitized and transmitted to the center device 3, and at the same time, it receives a driving command signal from the center device 3 and outputs it to the control section 13. Data converter 12
is located before the terminal device 11 and amplifies the measurement data signal from the measurement data detection means 9, converts it into voltage/current, and supplies it 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 1, and also sends an operation command signal to any of the power generation devices 1. a communication processing unit 16 that transmits the communication processing unit 16;
a control unit 17 that controls operations such as 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 display unit 18 that displays alarm signals and operating status signals; a magnetic recording section 21 for magnetically recording information, and a display section 18,
9 and an operation section 22 that is operated to control a recording section such as a printer 20.

Next, the operation of the above configuration will be explained. When the power generator 1 is normally supplied with commercial power,
Although the operation of the engine 4 is stopped, when a power outage occurs in the commercial power source, a power outage signal is inputted to the control unit 13 from the operating state detection means, so 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 and transmits an operating state signal to notify 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,
Two minutes after the start of operation of the power generator 1, the control unit 17
After 1 minute, 20 minutes, 30 minutes, 1 hour, 2 hours, etc., the power generation device 1 is called at short intervals immediately after the start of operation, and thereafter at longer intervals, and measured data is sent from the power generation device 1. to be sent. This measurement data is displayed on the measurement data display section 19 in the center device 3, and is also recorded on a magnetic recording medium such as a magnetic disk in the magnetic recording section 21, and printed on recording paper by the printer 20 as necessary.

When an abnormal situation occurs in the power generation device 1 after the start of operation, the terminal device 1 is immediately activated based on the abnormality alarm signal.
1 calls the center device 3, and the center device 3
to notify the occurrence of an 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 generation device 1 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) automatic maintenance operation that is automatically performed at fixed intervals on each power generator 1, and (b) a user etc. There are three types of maintenance operations: (c) manual maintenance operation, which is performed manually by the operator, and (c) remote maintenance operation, which is 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 accordance with commands from the center device 3 will be explained.

When a technician instructs maintenance operation of a required power generation device 1 by operating the operation unit 22 in the center device 3, the operation command signal is transmitted to the required power generation device 1 through the communication processing unit 16. In the power generation device 1, the terminal device 11 receives the operation command signal and outputs it to the control section 13. Control unit 13
In response to this maintenance operation command signal, the engine 4 is started with the generator 5 disconnected 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. When a certain period of time has elapsed after the start of the maintenance operation, the terminal device 11 of the power generating device 1 detects this elapsed time and outputs an operation stop signal, and the operation of the engine 4 is stopped by this operation stop signal.

Incidentally, 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 section 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, 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, so that 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. Because it is possible to examine the measurement data up to that point and accurately understand the nature of the abnormality,
Accurate response is possible, and maintenance, inspection, and repair can be carried out efficiently.

In particular, in the event of a power outage, the generator of the power generation equipment is immediately operated, and if an abnormality that should not continue operation occurs, the generator is immediately stopped, resulting in high safety, and the status can be grasped by the central device. Therefore, a system suitable for application to an emergency power generator can be obtained.

[Brief explanation of drawings]

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 device, 13...
...Control unit, 16...Communication processing unit, 17...Control unit, 18...Display unit for alarm signals, etc., 20, 21...
...recording section (20... printer, 21... magnetic recording section), 22... operation section.

Claims (1)

[Scope of Claims] 1. A system for centrally monitoring a plurality of power generation devices installed in remote locations from each other by a single central device via a telephone line, wherein each power generation device is provided with an abnormality alarm signal, an operating status A detecting means that outputs a signal and a measurement data signal during operation, a control section that controls the operation of the power generation device based on a predetermined detection signal from the detecting means or an operation command signal from a center device, and a control section that detects the abnormality through a telephone line. A terminal device is provided that transmits an alarm signal, 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 unit. a communication processing section that receives an abnormality alarm signal, an operating state signal, and a measurement data signal from the device and transmits an operation command signal to one of the power generation devices; a control section that controls the operation of the communication processing section; and an abnormality alarm. a display unit that displays the signal, the driving status signal, and the measurement data signal; a recording unit that records at least the measurement data;
One of the power generating units is equipped with an operation unit that is operated to issue an operating status signal, and in each generating unit, when a power outage signal from the operating status detecting means is input to the control unit, the control unit starts the engine for driving the generator, and transmits the operating status signal and measurement data signal from the terminal device to the center device, and also sends the lubricating oil pressure drop signal, cooling water temperature rise signal, or overspeed signal after the start of operation. When any abnormality alarm signal is output from the abnormality detection means, the engine is stopped, and the center device displays the contents of the received operating status signal and measurement data signal on the display section, and records the measurement data in the recording section. A centralized monitoring system for a power generation device, characterized in that it is configured to record.