JP2002215228A - Cogeneration monitoring and controlling system and operation supporting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cogeneration monitoring and controlling system and operation supporting equipment capable of corresponding to abnormality such as the shutdown of cogeneration equipment introduced to energy consuming facilities not securing a resident person in charge and suppressing the increment of economical load such as the increment of purchase quantity of commercial power and the occurrence of accidents. SOLUTION: The operation supporting equipment 20 for supporting the remote control of the cogeneration equipment 10 is connected to the equipment 10 through a public communication network NW such as the Internet, abnormality is analyzed on the basis of operation state information indicating an operation state automatically transmitted from the equipment 10 through the network NW and operation such as the restart of the equipment 10 and the modification of an operation condition is executed by remote control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cogeneration monitoring and control system for operating a cogeneration facility, and an operation support facility used for the system, and more particularly to a cogeneration monitoring system for remotely controlling the cogeneration facility. The present invention relates to a control system and operation support equipment.

[0002]

2. Description of the Related Art A cogeneration system which generates electric power by a private generator such as a gas engine and a gas turbine and effectively uses waste heat generated during power generation as energy for facilities such as air conditioning and hot water supply generates private power. This will reduce the amount of commercial power purchased from power companies and increase the overall energy efficiency through effective use of waste heat, so it will be introduced and expanded into various energy-consuming facilities such as factories, business establishments, and apartment houses. Spread is spreading.

[0003]

However, among various energy consuming facilities that have introduced cogeneration facilities, there are energy consuming facilities that do not have a technical staff to manage the operation and maintenance of the cogeneration facilities. Yes, and even in energy consuming facilities that have staff in charge, they are not always resident 24 hours a day. For this reason, even if the cogeneration equipment stops in an emergency due to various factors such as a power outage or a rise in cooling water temperature, it is not possible to respond, and in some cases, even if the emergency stop is not noticed, There is a problem that a situation may occur.

If you are not aware of an emergency stop,
For example, there is a problem that the economic burden increases due to an increase in the purchase amount of commercial power, and furthermore, the purchase amount exceeds a predetermined amount contracted with the electric power company, which leads to a problem that a penalty is generated. . And not only the financial burden,
It is expected that equipment failures due to delays in response will also occur.

[0005] The present invention has been made in view of such circumstances, and an operation support facility for supporting remote operation of a cogeneration facility is connected to the cogeneration facility via a public communication network such as the Internet. Analyzes abnormalities based on the operating status information indicating the operating status automatically transmitted from the public network via the public communication network, and performs remote control such as restarting the cogeneration equipment and changing operating conditions. As a result, even in the absence of technical staff at energy consuming equipment, abnormalities are detected, primary measures such as emergency measures are taken, and there is no economic burden such as an increase in the purchase of commercial power and the occurrence of penalties. Co-generation monitoring and control system that prevents an increase in And an object thereof is to provide a.

[0006]

A cogeneration monitoring and control system according to a first aspect of the present invention includes a cogeneration facility that operates based on set operating conditions and an operation support facility that supports the operation of the cogeneration facility. The cogeneration monitoring and control system is characterized by comprising a connecting means for connecting the cogeneration facility and the operation support facility with a public communication network.

[0007] In the cogeneration monitoring and control system according to the first aspect of the present invention, by realizing remote control of the cogeneration facility through a public communication network such as the Internet, factories, various offices, Also, in various energy consuming facilities such as multi-family homes, even if there is no technical person who manages the operation and maintenance of cogeneration equipment, operate the cogeneration equipment to ensure stable operation It is possible to

[0008] A cogeneration monitoring and control system according to a second invention is the cogeneration system according to the first invention, further comprising detection means for detecting an abnormality in the cogeneration equipment, wherein the connection means is connected when the detection means detects an abnormality. It is characterized by what it does.

In the cogeneration monitoring and control system according to the second aspect of the present invention, even in a situation where there is no technical person who manages the operation and maintenance of the cogeneration equipment, primary measures such as emergency measures are detected by detecting an abnormality. By performing, for example, even in the event of emergency stop of the cogeneration facility, it is possible to prevent an unnecessary increase in the economic burden such as an increase in the amount of commercial power purchased from the power company and the resulting penalty, In addition, it is possible to suppress the occurrence of failures in the equipment due to delayed response, and furthermore, the cogeneration equipment and operation support equipment are connected only when an abnormality is detected, so they are always connected. The communication load can be reduced as compared with the case.

[0010] A cogeneration monitoring and control system according to a third invention is characterized in that in the first invention or the second invention, the operation support equipment further comprises a firewall.

[0011] In the cogeneration monitoring and control system according to the third aspect of the present invention, it is possible to prevent improper activities such as leakage and falsification of information relating to each cogeneration facility managed by the operation support facility, and to use the public communication network safely. Is possible.

The cogeneration monitoring and control system according to a fourth aspect of the present invention is the cogeneration facility according to any one of the first to third aspects, wherein the cogeneration facility further comprises means for recording operation status information indicating an operation status, Means for transmitting operation status information to the operation support equipment when the means detects an abnormality, wherein the operation support equipment outputs a treatment signal indicating a treatment for the abnormality determined based on the received operation status information. Means for transmitting to a cogeneration facility, wherein the cogeneration facility comprises:
Further, there is provided a means for performing a measure for the abnormality based on the received measure signal.

[0013] In the cogeneration monitoring and control system according to the fourth aspect of the present invention, the abnormality is automatically or manually determined based on the operating status information before and after the occurrence of the abnormality, and a treatment signal is transmitted from the operation support equipment to the cogeneration equipment based on the result. By transmitting the information to, it is possible to improve the accuracy of judging the condition of the abnormality and to take appropriate measures.

According to a fifth aspect of the present invention, in the cogeneration monitoring and control system according to the fourth aspect, the operation support equipment further includes a means for outputting the received operating status information, and an abnormality determined based on the output operating status information. Means for receiving an input of a treatment signal indicating a treatment for

[0015] In the cogeneration monitoring and control system according to the fifth invention, in the fourth invention, the operator who operates the operation support equipment automatically performs a treatment by judging an abnormality and its treatment from the operation status information. It is possible to take a more flexible response than in the case of.

[0016] In the cogeneration monitoring and control system according to a sixth aspect of the present invention, in the fourth or fifth aspect of the invention, the treatment includes restarting the cogeneration facility and / or
Or, it is a change of operating conditions.

In the cogeneration monitoring and control system according to the sixth aspect of the present invention, an unnecessary increase in the economic burden can be prevented by restarting and / or changing operating conditions as an emergency measure. Can be prevented from occurring.

According to a seventh aspect of the present invention, there is provided the operation support equipment for supporting the operation of the cogeneration equipment, comprising: a connecting means for connecting the cogeneration equipment to a public communication network; And a means for transmitting to the cogeneration facility a treatment signal indicating a treatment for an abnormality determined based on the received operation state.

In the operation support facility according to the seventh aspect of the present invention, the remote operation of the cogeneration facility is realized via a public communication network such as the Internet, so that the factory, the various offices, and the collective where the cogeneration facility is introduced. Even in the absence of a technical person who manages the operation and maintenance of cogeneration equipment at various energy consuming facilities such as houses, by detecting abnormalities and performing primary measures such as emergency measures For example, even when an emergency stop of a cogeneration facility occurs, it is possible to prevent an unnecessary increase in the economic burden such as an increase in the amount of commercial power purchased from a power company and a resulting penalty, and the response is delayed. It is possible to suppress the occurrence of failures in equipment due to the Because to connect only if an abnormality is detected, it is possible to reduce the communication load as compared with the case where fixed-connection.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. FIG. 1 is an explanatory diagram showing the concept of a cogeneration monitoring and control system according to the present invention. In the figure, 10, 10,... Are cogeneration facilities installed in various energy consuming facilities such as factories, various offices, and apartment houses, and the cogeneration facility 10 is an in-house power generator such as a gas engine and a gas turbine. Operating unit 1 that generates electric power by a heat generator and uses waste heat generated during power generation as energy for facilities such as air conditioning and hot water supply.
10 and a control unit 120 that controls the operation unit 110 and manages communication and the like.

The cogeneration facility 10 is connected to a public communication network NW such as the Internet by the control unit 120, and an operation support facility 20 for supporting remote operation of the cogeneration facility 10 is connected to the public communication network NW. I have. The operation support facility 20 includes a communication unit 210 connected to the public communication network NW, a processing unit 220 including various servers, and an operation support unit 230 that performs processing related to remote operation support.

FIG. 2 is a block diagram schematically showing the configuration of a cogeneration facility 10 provided in the cogeneration monitoring and control system of the present invention. The operating unit 110 of the cogeneration facility 10 includes a gas engine generator 111. The gas engine generator 111 generates electric power using gas supplied as primary energy as fuel, and obtains electric power as secondary energy. 1 breaker 11
The power is sent to the power load EL via the second circuit breaker 2a and the second circuit breaker 112b. Further, waste heat generated at the time of power generation by the gas engine generator 111 is sent to the heat exchanger 113 and a thermal load HL such as a heating facility as thermal energy such as high-temperature steam as secondary energy. Further, a cooling tower 114 is attached to the heat exchanger 113 as necessary. The power load EL includes:
In addition to the electric power sent from the gas engine generator 111, electric power purchased from an electric power company is supplied via the third circuit breaker 112c.

The control unit 120 includes a sequencer control panel 121 and a PLC (Programmable Logic Controller) 122 for controlling the operation unit 110 based on the recorded set values and operation conditions set by the operation program. The operation status information indicating the operation status of the operation unit 110 controlled by the control panel 121 and the PLC 122 includes:
Information processing device 12 using client computer
Recorded at 3. In the information processing device 123, based on operation status information of the operation unit 110 such as electric power purchased from a power company and electric power generated by the gas engine generator 111,
An abnormality such as an abnormal stop of the operation unit 110 can be detected, and the sequencer control panel 1 can be detected based on an external signal.
The CPU 21 performs various measures such as changing various setting values of the operating unit 110 and restarting the temporarily stopped operating unit 110 via the PLC 21 and the PLC 122. The information processing device 123 is connected to the public communication network NW by a connection device 124 such as a dial-up router, and performs communication processing such as transmission of operation information and reception of various signals with the operation support equipment 20 via the public communication network NW. Do. Note that the PLC 122, the information processing device 123, and the connection device 124 that constitute the control unit 120 are connected by a first internal communication network NWi1 such as a LAN.

FIG. 3 is a block diagram schematically showing the configuration of the operation support equipment 20 provided in the cogeneration monitoring and control system of the present invention. The communication unit 210 included in the operation support facility 20 includes a connection device 211 such as a router and a firewall 212 that restricts transmission and reception of information. The communication unit 210 also includes a processing unit 220 and an operation support unit 230.
Is connected to the public communication network NW
It is connected to the. The processing unit 220 includes various servers 221, 221 and so on, such as a gateway server, a database server, and a WWW server, and performs various processes by the various servers.

The operation support unit 230 is composed of one or a plurality of computers using a client computer. The CPU 231, a recording unit 232 for recording information such as various programs and data, and temporarily stores data generated by the processing of the CPU 231. Main storage means 233 for storing in
Input means 234 such as a mouse and a keyboard, output means 235 such as a monitor and a printer, and the second internal communication network N
A connection means 236 such as a LAN board for connecting to Wi2 is provided.

Since the information about the cogeneration facilities 10, 10,... Installed at various energy consuming facilities such as factories, various business offices, and apartment houses is recorded in the operation support facility 20, the information is leaked. And a firewall 212 for preventing tampering is indispensable, and by using the firewall 212, an inexpensive system for managing cogeneration facilities 20, 20,... Widely distributed using the public communication network NW is constructed. Becomes possible.

Next, the processing of the cogeneration facility 10 and the operation support facility 20 in the cogeneration monitoring and control system of the present invention will be described with reference to the flowchart shown in FIG. The information processing device 123 included in the cogeneration facility 10 records operation status information indicating an operation status transmitted from the operation unit 110 at a predetermined cycle (step S1), and based on the recorded operation status information, a power failure. The presence / absence of an abnormality such as a stoppage of the operating unit 110 is detected based on various factors such as a rise in the temperature of the cooling water and the like.
24, the communication with the public communication network NW is established (step S3), and the operation status information for a predetermined period before and after the time when it is determined that an abnormality has occurred is transmitted to the operation support equipment 20 (step S4).

The information processing device 123 does not detect the occurrence of an abnormality from the operation status information,
For example, when an abnormality is detected based on information such as a power generation state and a temperature, and an abnormal process such as an emergency stop process is performed, an abnormal stop signal is sent from the operating unit 110 to the information processing device 123, and the information processing device 123 Then, an abnormality may be detected based on the received abnormal stop signal.

The operation support equipment 20 receives the operation status information (step S5), and outputs the received operation status information from the output means 235 of the operation support unit 230 (step S6). The operator who operates the operation support unit 230 checks the operation status information output from the output unit 235,
Determine the error that has occurred based on the confirmed operating status information,
A treatment signal indicating a measure such as a restart and a change in operating conditions,
Input to the operation support unit 230. In addition, an imaging device that captures an image of a main part of the operating unit 110 and a sound collector that collects sound of the main part are provided in the cogeneration facility 10, and the obtained image information and / or audio information is transmitted to the public communication network NW. The operation may be transmitted to the operation support equipment 20 via the operation support unit 230 and output by the operation support unit 230 so that the operator can determine the action to be performed.

The operation support unit 230 receives the input of the treatment signal (step S7), and transmits the received treatment signal to the cogeneration facility 10 (step S7).
8). In addition, a pattern of operation status information at the time of abnormal stop due to a power failure or the like that can be restarted without any problem is recorded in the operation support unit 230 in advance, and the operation status information transmitted from the cogeneration facility 10 is recorded. In the case where the pattern matches or is similar to the operation pattern, even if the operator does not receive the input of the treatment signal, the operation support unit 230 determines the abnormality and the treatment that have occurred, and outputs the treatment signal indicating the restart. Automatic remote control for transmission may be performed.

The information processing equipment 123 provided in the cogeneration equipment 10 receives the treatment signal (step S
9), a treatment for controlling the operating unit 110 based on the received treatment signal is performed (step S10). The remote operation by the cogeneration monitoring and control system of the present invention
The present invention is applied to an operation in which an operator who operates the information processing equipment 123 inputs a treatment signal for changing various setting values to improve an operation rate, based on the operation state information, in addition to a measure such as a restart for an abnormality. Is also possible.

Next, typical examples of remote control by the cogeneration monitoring and control system of the present invention will be described below. Embodiment 1 FIG. When an abnormal stop is detected by the information processing device 123 included in the cogeneration facility 10, the operation status information is transmitted to the operation support facility 20. Operation support equipment 2
The operator who operates the operation support unit 230 provided in 0 has an abnormality in the power supplied from the power company and a voltage drop and a frequency drop in the power generated by the gas engine generator 111 from the operation status information. If it is not possible to confirm the cause of the failure, and if the cause of the failure cannot be confirmed, it is determined that the operation has been stopped abnormally due to a power failure, and the operation unit 110 is restarted.

Embodiment 2 FIG. Cogeneration equipment 10
When the information processing device 123 included in the device detects an abnormal stop, the operation status information is transmitted to the operation support equipment 20. The operator who operates the operation support unit 230 provided in the operation support equipment 20 confirms that the temperature of the cooling water in the cooling tower 114 is gradually rising from the operation status information, and also confirms the cause of the failure. If not, it is determined that the strainer and / or the cooling tower 114 provided in the transfer pipe for transferring the fluid such as high-temperature steam and cooling water provided in the operating unit 110 is clogged, and the power generation amount is reduced. After changing the set value, take action to restart. Furthermore, a treatment signal is transmitted from the operation support equipment 20 to the cogeneration equipment 10 to continuously transmit the operation status information after the treatment, and the operation support equipment 20 continues to monitor the operation status information after the setting change, and Performs work such as strainer replacement by arranging personnel such as dispatch.

Embodiment 3 FIG. Cogeneration equipment 10
When the information processing device 123 included in the device detects an abnormal stop, the operation status information is transmitted to the operation support equipment 20. The operator who operates the operation support unit 230 included in the operation support facility 20 confirms from the operation status information that the load on the power load EL has been rapidly reduced and the power supplied from the power company has been reduced, If the cause of the failure cannot be confirmed, the power consumption of the power load EL is suddenly reduced, so that it is determined that the operation has stopped abnormally, and the set value for increasing the power supply from the power company is changed. Take action to restart.

The abnormal stop of the operation unit 110 due to the sudden decrease in the power consumption of the power load EL is an operation stop performed to prevent an accident of causing the power to flow backward to the power company. For example, the power consumption of the power load EL is 300 k
W, under the condition that the power generated by the operating unit 110 and supplied to the power load EL is operated at 200 kW and the power supplied from the power company is operated at 100 kW,
When the power consumption of the power load EL is rapidly reduced to 150 kW,
Among the 200 kW of power supplied from the operating unit 110, 150 kW is supplied to the power load EL, and the remaining 50 kW is the third power.
An accident that flows back to the power company side beyond the circuit breaker 112c occurs. The operation is stopped to prevent such an accident.

Embodiment 1 described above. And Embodiment 2. And Example 3. Since it is relatively easy to determine the abnormality based on the operation status information, it is desirable to set the target for automatic remote operation.

In the above-described embodiment, the form in which the cogeneration facility is connected to the operation support facility and communication is established has been described. However, the present invention is not limited to this, and information such as the occurrence of a power outage over a wide area due to a lightning strike is provided. When the operator of the operation support facility confirms, the operation support facility side may connect to the cogeneration facility to establish communication and confirm whether or not an abnormality has occurred.

[0038]

As described in detail above, the cogeneration monitoring and control system and the operation support equipment according to the present invention
The operation support facility that supports remote operation of the cogeneration facility is connected to the cogeneration facility via a public communication network such as the Internet, and the operation status is automatically transmitted from the cogeneration facility via the public communication network. After analyzing the abnormalities based on the situation information, by performing remote control such as restarting the cogeneration equipment and changing the operating conditions, even in the absence of technical staff at the energy consuming equipment, Detects abnormalities and performs first-aid measures such as first aid measures, preventing unnecessary increases in the economic burden such as increases in commercial power purchases and penalties, and suppressing the occurrence of equipment failures. It has the effect.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing the concept of a cogeneration monitoring and control system of the present invention.

FIG. 2 is a block diagram schematically showing a configuration of a cogeneration facility provided in the cogeneration monitoring and control system of the present invention.

FIG. 3 is a block diagram schematically showing a configuration of operation support equipment provided in the cogeneration monitoring and control system of the present invention.

FIG. 4 is a flowchart showing processing of a cogeneration facility and an operation support facility in the cogeneration monitoring and control system of the present invention.

[Explanation of symbols]

 Reference Signs List 10 cogeneration facility 110 operating section 120 control section 20 operation support facility 210 communication section 220 processing section 230 operation support section NW public communication network

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 11/00 301 H04M 11/00 301 H04Q 9/00 301 H04Q 9/00 301B 311 311J (72) Inventor Fumiki Inui Osaka Gas Co., Ltd. 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi (72) Inventor Shomei Yamazaki 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka-shi Osaka Gas Co., Ltd. (72) Inventor Mikiya Ishii 4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka F-term in Osaka Gas Co., Ltd. 5G064 AA04 AB03 AC08 CB06 CB13 DA03 5G066 HA17 HB02 5H223 AA02 BB02 CC03 DD03 DD07 EE06 5K048 AA06 BA01 BA21 DC07 EB02 EB10 EB12 GB05 HA01 HA02 5K101 KK13 LL01

Claims (7)

[Claims] 1. A cogeneration monitoring and control system including a cogeneration facility that operates based on set operating conditions and an operation support facility that supports operation of the cogeneration facility, wherein the cogeneration facility and the operation support facility A cogeneration monitoring and control system, comprising: connecting means for connecting to a public communication network. 2. The apparatus according to claim 1, further comprising detection means for detecting an abnormality of the cogeneration equipment, wherein the connection means is adapted to connect when the detection means detects an abnormality. Cogeneration monitoring and control system. 3. The cogeneration monitoring and control system according to claim 1, wherein the operation support equipment further comprises a firewall. 4. The cogeneration facility further includes: a unit that records operation status information indicating an operation status; and a unit that transmits operation status information to the operation support facility when the detection unit detects an abnormality. The operation support equipment further comprises means for transmitting a treatment signal indicating a treatment for an abnormality determined based on the received operation status information to the cogeneration equipment, wherein the cogeneration equipment further comprises a received treatment signal The cogeneration monitoring and control system according to any one of claims 1 to 3, further comprising: means for performing a measure against an abnormality based on the condition. 5. The operation support equipment further comprises: means for outputting the received operation status information; and means for receiving an input of a treatment signal indicating a treatment for an abnormality determined based on the output operation status information. The cogeneration monitoring and control system according to claim 4, wherein: 6. The cogeneration monitoring and control system according to claim 4, wherein the action is a restart of the cogeneration facility and / or a change in operating conditions. 7. An operation support facility for supporting operation of a cogeneration facility, comprising: a connection means for connecting the cogeneration facility to a public communication network; and a means for receiving operation status information indicating an operation status of the cogeneration facility. And a means for transmitting a treatment signal indicating a treatment for an abnormality determined based on the received operation status to the cogeneration facility.