JP2002247767A - Monitor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely, surely and effectively monitor a cogeneration apparatus with a mobile phone. SOLUTION: A monitor system is capable of monitoring, using a mobile phone 61, the operating condition of the cogeneration apparatus in which a generator 3 is driven by a motor 2 to obtain power, and hot water and vapor, etc., are collected by use of exhausted heat. The mobile phone 61 is provided with a means for requesting and inputting at least one operation mode preset to the mobile phone when the operating condition of the cogeneration apparatus is notified to the mobile phone 61.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring system for monitoring the operating state of a cogeneration system using a portable telephone.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. 2000-13513
As disclosed in Japanese Unexamined Patent Application Publication No. H11-107, a device that transmits voice information and character information to a mobile phone when equipment is abnormal has been proposed.

[0003]

As described above, by transmitting voice information and character information to a mobile phone when equipment is abnormal, the abnormality can be quickly transmitted, but the details of the abnormality can be grasped. However, there was a drawback that measures could not be implemented until the workers rushed to the site.

[0004] By the way, "i-mode (registered trademark)" using a TCP / IP Internet protocol network,
Some high value-added mobile phones capable of packet communication such as “Ez-Web (registered trademark)” download Java (registered trademark) or C language user programs, or connect a memory stick or memory card, It has also become possible to function as a user-only terminal.

In recent years, hotels, hospitals, sports clubs and the like have been actively introducing cogeneration apparatuses having a thermal efficiency of 80% or more by simultaneously performing power generation and hot water supply using kerosene, LPG gas, LNG gas or the like as fuel.

[0006] In this cogeneration system, a generator is driven by a prime mover such as a gas turbine or an internal combustion engine to obtain electric power and recover hot water, steam, etc. by exhaust heat. This is because the environmental efficiency is remarkable, such as economical efficiency at a low cost and reduction of NOx, SO ₂ , and carbon dioxide emissions by a fraction, but remote management is performed when there is an abnormality in the gas turbine or internal combustion engine. There was no safe and secure monitoring device.

In this cogeneration system, when the power generated by the generator is used with a selected load, if the so-called system separation of supplying the commercial power and the switching device is used, the surplus of the generator of the cogeneration system becomes the commercial power. It can be constructed at low cost without danger of so-called reverse power flow, but it cannot supply power to the whole building,
It was not possible to reasonably monitor the time period for switching the switching device to commercial power and the time period for switching to the generator of the cogeneration device, such as replacing the switching device when the load changed.

[0008] When the electric power of the generator of the cogeneration system is supplied to the entire building, the commercial power is connected to the generator of the cogeneration system via a system coupler (protection feeder for system interconnection). This improves stability, such as eliminating the need for load selection and providing continuous commercial power even if the generator of the cogeneration system fails, but the overall cost is high, and In the event of a power outage, a reverse power flow occurred, and it was not possible to reasonably monitor the switching time of the power generation amount of the cogeneration system to minimize the power purchase cost.

The present invention has been made in view of such circumstances, and has as its object to provide a monitoring system capable of safely and rationally monitoring a cogeneration device with a portable telephone.

[0010]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

According to the first aspect of the invention, there is provided a monitoring system for monitoring the operating state of a cogeneration system for recovering hot water, steam, and the like by exhaust heat by driving a generator by a prime mover and using a mobile phone. Means for requesting and inputting selection of at least one operation mode previously set in the mobile phone when the mobile phone is notified of the operation state of the cogeneration device. A surveillance system characterized in that: ].

According to the first aspect of the present invention, the person who has received the notification of the operation state of the cogeneration apparatus is:
You can control the cogeneration system by selecting the most suitable operation mode such as "Emergency stop", "Normal automatic stop", and "Idle operation" with your mobile phone. This prevents damage to the system and also prevents fire and burns. As a result, it is possible to monitor safely and rationally.

According to a second aspect of the present invention, a means for automatically stopping an engine of the cogeneration apparatus automatically when the cogeneration apparatus cannot receive a driving mode change from a mobile phone within a predetermined time after the notification. To
The monitoring system according to claim 1, wherein the monitoring system is provided in the mobile phone. ].

According to the second aspect of the present invention, for example, even if a person who has received a report has overlooked the report or has been unable to select and input an optimal operation mode even if he or she can receive the report, Since the supply of fuel can be reliably stopped before the staff rushes to the station, it is possible to prevent damage to the apparatus and to prevent fire and burn beforehand, so that safer and more reliable and rational monitoring can be performed.

According to a third aspect of the present invention, there is provided a communication system, wherein, when the cogeneration device is operating normally, the content of the notification is a message indicating that the cogeneration device is connected to a commercial power connection point.
3. The monitoring system according to claim 1, wherein the monitoring system is at least a power selling or purchased power amount, a purchased power fee, a used fuel fee, or a power generation cost fee, and the content of the notification is displayed on the mobile phone. 4. . ].

According to the third aspect of the present invention, it is possible to monitor the economy of the cogeneration system during normal operation,
It is convenient because it is easy to know even if the purchased power amount is more economical than the power generation amount of the cogeneration device, or vice versa.

[0017] If it is found that both the amount of power purchased and the amount of power generated by the cogeneration device are significantly larger or smaller than normal, any one of a prime mover, a generator, a grid interconnection device, an islanding detection device, a critical load, etc. Can be foreseen, and can be prevented before a large-scale system failure occurs, improving reliability.

According to a fourth aspect of the present invention, there is provided a power supply system, wherein when the power purchase fee is higher than the fuel consumption fee or the power generation cost fee continuously for a predetermined time or more, the purchased power amount is not more than a predetermined% of the rated load of the generator or The power receiving commercial power line is controlled or disconnected so as to be zero, the fuel throttle valve opening of the prime mover is maintained at a predetermined opening or more, and a base load is displayed on the mobile phone. Item 3
A monitoring system according to claim 1. ].

According to the fourth aspect of the present invention, the power of the generator of the cogeneration system can be utilized to the utmost, the power cost can be minimized, and the operating time of the generator can be maintained as long as possible. As a result, cost amortization of the cogeneration device is expedited and economic rationality can be improved.

Further, by displaying the base load and the display on the mobile phone, it is understood that the customer is driving with great economic merit even in a remote place, and the convenience is improved.

According to a fifth aspect of the present invention, there is provided a method for controlling a power selling amount to zero and a purchased power amount to a maximum when a purchased power rate is lower than a used fuel rate or a generation cost rate continuously for a predetermined time or more. 4. The monitoring system according to claim 3, wherein a fuel throttle valve opening of the prime mover is equal to or less than a predetermined opening or combustion supply is stopped, and a peak cut is displayed on the mobile phone. ].

According to the fifth aspect of the present invention, it is possible to reduce the contract amount of the minimum power purchase amount with the electric power company and to reduce the fuel cost of the generator of the cogeneration system, thereby providing the customer with an economic advantage. Will be higher.

Further, by displaying the peak cut and the display on the mobile phone, it is understood that the fuel-saving operation having a great economic merit of the customer is performed even in a remote place, and the convenience is improved.

According to a sixth aspect of the present invention, there is provided a method as set forth in the fourth or fifth aspect, wherein the power amount is controlled by controlling at least a commercial power line via an islanding detection device. Monitoring system. ].

According to the sixth aspect of the invention, the power generated by the generator of the cogeneration device is changed to the load power while the commercial power side is out of service and the operation such as the transformer replacement occurs. Even if the state exceeds the above, power transmission (referred to as reverse power flow) can be prevented conversely, which can prevent electric shock accidents and improve safety.

Further, even when the power of the generator of the cogeneration device is interrupted, the commercial power can be switched to only the load and the power can be supplied. Therefore, the power interruption of the load during repair of the equipment of the cogeneration device can be prevented, and the reliability is improved.

The invention according to claim 7 is characterized in that "a flag indicating that the control operation has been started is written into at least two memories of the cogeneration device and the mobile phone. The monitoring system according to claim 6. ].

According to the present invention, the same flag is written in two places in the memory of the mobile phone and the memory of the cogeneration apparatus in the operation of the monitoring system, and the receiver of the mobile phone can In addition, by voice communication with a person who has rushed to the site where the cogeneration device is located, it is possible to follow up whether or not the monitoring flag on the cogeneration device side is caused by a malfunction, so that the monitoring system itself can be easily checked and convenient.

Further, even if the memory portion of the cogeneration device is physically lost due to an accident such as burnout, the history of the flag is stored in the memory of the mobile phone, so that the accident analysis can be performed reliably, which is convenient. is there.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a monitoring system according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a cogeneration apparatus. The cogeneration apparatus 1 used in the monitoring system of this embodiment mainly includes a prime mover 2 and a generator 3
And an exhaust heat recovery device 4 and an exhaust heat utilization device 5.
The prime mover 2 is driven by supplying fuel to a starting device 6 and a fuel supply device 7.

Commercial power is supplied to the power load 11 from the system interconnection line 10 via the system interconnection device 9. The power obtained from the generator 3 is switched by the switching device 12 between the system interconnection line 10 and the system separation line 13. When the electric power is switched to the system interconnection line 10, the power obtained from the generator 3 is reduced. When the power is supplied to the power load 11 together with the commercial power and switched to the system separation line 13, the power obtained from the generator 3 is independently supplied to the power load 11.

The waste heat utilization equipment 5 supplies heat energy to the heat load 14, and the heat load 14
Is supplied with heat energy.

The prime mover 2, generator 3, starting device 6 and fuel supply device 7 of the cogeneration system 1 are controlled by a cogeneration system controller 8.

The generator 3 of the cogeneration system 1
There are a synchronous generator and an induction generator, which can be selected according to the power generation scale and the like.

The electric motor 2 for driving the generator 3 generally includes a gas engine (GE) and a gas turbine (GT), and the fuel includes city gas, LPG propane gas, and kerosene. Gas engines and gas turbines using clean city gas as fuel are preferred. The prime mover 2 can be selected mainly according to the power generation scale and the form of waste heat utilization.

The exhaust heat recovery device 4 is composed of a heat exchange device and an exhaust gas boiler, and the exhaust heat of the prime mover 2 is recovered mainly as hot water as steam through the heat exchange device and the exhaust gas boiler. When the recovered heat is unnecessary, a device such as a cooling tower or a radiator capable of appropriately radiating heat is required. The waste heat utilization device 5 is configured by a hot water supply preheating tank, a waste waste heat utilization absorption refrigerator, or the like, and can effectively utilize waste heat.

A chief power management engineer 20 is usually stationed at the site, and monitors the operation of the cogeneration system 1 on the display panel of the console of the cogeneration system controller 8. For example, when the generator 3 fails, the grid interconnector 9 is switched, and the commercial power is continuously relayed to the power load 11.

However, the power company power plant 21 and the grid interconnection 9
For example, if there is an accident such as a power pole transformer being intermittent, when a power company worker works, it is assumed that power transmission from the power company power plant 21 has stopped, and work is started. However, if the power load 11 is suddenly reduced when the generator 3 has a high output, a reverse power flow in which the power of the generator 3 flows around on the commercial power side may cause an electric shock accident.

Normally, the power management chief engineer 20 and the power company's power plant 21 or sales office or power outage construction company can talk with each other through the dedicated wired security communication telephone equipment 22. Inconvenient inability to analyze the cause of the cogeneration system 1 unless the contractor, chief technician, and maintenance service staff increase the number of means that the construction contractor, chief engineer, and maintenance service staff need to know, and the construction time is prolonged. There is.

FIG. 2 is a configuration diagram of the monitoring system. In the monitoring system according to this embodiment, the same components as those in FIG. The commercial power is supplied by an instrument transformer rectifier PCT provided in the system interconnection 10.
And an islanding detection device 30 for preventing an electric shock accident during a commercial power failure.
And is connected to the power load 11 via the. The grid interconnection protection relay Ry senses the inputs of the instrumentation transformer PT and the instrumentation current transformer CT, and switches off each of the circuit breakers 31 when the commercial voltage or the generation voltage becomes abnormally high or low. Open to prevent damage.

On the other hand, the generator 3 and the prime mover 2 of the cogeneration system 1 are connected by a joint coupling or a transmission 3.
When the rotation of the prime mover 2 increases, the generator 3 generates power and the generated power is supplied to the power load 11 via the power receiving commercial power line 33. The power receiving commercial power line 33 is provided with a circuit breaker 34.

As the motor 2, a gas engine (GE) and a gas turbine (GT) are used.
Since it is extremely high at 0 to 800 ° C, the jacket heat exchanger 3
5 and the gas distribution heat exchanger 36 are often used as hot water supply boilers. Thermal efficiency by power generation and hot water supply is about 80%. After the fuel is pressurized and rectified by the fuel pump 37, the fuel is supplied to the prime mover 2 via a fuel throttle valve 38 and a fuel cutoff valve 39. When the fuel cutoff valve 39 is closed, the prime mover 2 is not driven, and the power generation of the generator 3 is stopped.

The cogeneration system controller 8 includes C
The PU 40 includes a PU 40, a power supply unit 41, a counter timer 42, and a program RAM 43. Based on the input of the exhaust gas temperature signal a and the motor rotation signal b, the CPU 40
An OFF signal, a fuel throttle opening signal, and a fuel cut signal are output to output the fuel pump 37 and the fuel throttle valve 38.
And the fuel cutoff valve 39 is controlled.

As the cogeneration system controller 8, an input signal for knowing the amount of power purchased from the protection relay Ry for grid connection, an input signal for knowing the amount of generated power from the receiving commercial power line 33, and the fuel throttle opening By inputting the fuel flow rate based on the signal c, the cost comparison operation circuit 44 can always compare the power purchase cost and the power generation cost.

A monitoring program is written in a part of the program ROM 45. The monitoring program has various monitoring flags at the changing points of the system state.
6 is written.

The cogeneration system controller 8 includes:
It incorporates a packet radio 47 to which TCP / IP can be connected, directly controls a program command, activates a Java program, and controls a mobile phone 61 via an antenna 48 and a radio telephone relay station 60. Functional monitoring can be done wirelessly.

Further, by mounting the mail program ROM 49, the self-check of the cogeneration system controller 8 itself can be reliably performed only by copying and transferring the contents of the flag RAM 46.

The cogeneration system controller 8 has a TC
P / IP address (eg, 201, 202, 203, 19)
0) can be assigned. Via the wireless telephone relay station 60 of the TCP / IP network, bidirectional communication with a portable telephone 61 capable of packet communication such as i-mode or Ez-Web can be performed. IP addresses of recipients A and B (examples 201, 2
02, 203, 191 and 201, 202, 203, 19
2) can be substituted by e-mail with a telephone number, a mobile phone company domain or the like.

FIG. 3 is a block diagram of a portable telephone which can be used for TCP / IP packet communication.

The mobile phone 61 of this embodiment includes an antenna 62, a liquid crystal display 63, and a keyboard 64 having various functions. Further, the battery 67 is connected to a commercial power supply from the charging connector 65 and charged through the regulator IC 66.

The portable telephone 61 has a high-frequency module 68 connected to an antenna 62, a low-frequency module 70, a CPU 71 and a program ROM 72 in a speaker 69, and is capable of normal voice communication, Web browsing, and mail transmission / reception. Needless to say, a Java program RAM user area 73, a counter timer 74, a flag RAM 75, an external memory connector 76, a memory stick or a memory card 77 are provided. Further, an external port connector 78 is provided.

The Java program RAM user area 7
Reference numeral 3 denotes a program RO of the cogeneration system controller 8 which can download and refer to data such as a monitoring flag from the cogeneration system controller 8.
A part of the M45 can be used to download and simulate a part of the M45, for example, to analyze in detail the functions of the site other than the system monitoring.

The flag RAM 75 in the mobile phone 61 stores the flag R of the cogeneration system controller 8 in principle.
This is for copying AM46. Mobile phone 61
And RA of the cogeneration system controller 8
By sum-checking the contents of M, the reliability of the entire monitoring system can be improved, such as estimating a failure in the TCP / IP network or the mobile phone 61.

FIG. 4 is a flowchart of the monitoring system. In the monitoring system according to this embodiment, the cogeneration device 1 starts power generation (step a1), and determines whether or not there is an emergency stop mode flag (step a).
2). If there is an emergency stop mode flag, i-mo
The de cellular phone 61 is connected to the TCP / IP network (step a3), and an emergency stop input request and a fuel throttle opening 5% input request are displayed on the liquid crystal display 63 (step a4).

FIG. 2A shows a display example on the portable telephone 61 of the receiver A. Recipient A (address 20
1, 202, 203, 191) is to press (or make an emergency stop within 1 minute after the display shows) or press the keyboard to input the fuel throttle opening of 5% (minimum power generation). Prompts you to enter a command.

After the flag is transmitted from the packet radio 47 of the cogeneration system controller 8, the counter timer 42 sets a counter for 120 seconds (step a).
5) If the receiver A does not exist or is not input within 120 seconds (2 minutes), the counter timer 42 of the cogeneration system controller 8 overflows (step a).
6) The process proceeds to a fuel cutoff valve closing subroutine (step a7), the fuel cutoff valve 39 is closed, power generation is automatically stopped, a fuel cutoff mode flag is created (step a8), and the process proceeds to step a10. Transition.

In step a6, if there is no receiver A, the process proceeds to a subroutine for starting the receiver-designated operation mode (step a9), and the designated operation mode of the receiver A is started and stored in the flag RAM 75 of the portable telephone 61. The operation mode is written (step a9), and the operation mode is copied to the flag RAM 46 of the cogeneration system controller 8.

At step a12, if the flag RAM 46 of the cogeneration system controller 8 has not been cleared, the flow proceeds to step a9. If the flag RAM 46 has been cleared, the TCP / IP line is cut off and the flow proceeds to step a2 (step a13). ).

If there is no emergency stop mode flag in step a2, the process proceeds to step a14 to execute a cost comparison operation subroutine. Then, a 30-minute timer is set (step a15), the power purchase fee and the fuel fee are fetched (step a16), and in step a17, it is determined whether the power purchase fee is higher than the fuel fee.

If the power purchase fee is higher than the fuel fee, the fuel throttle valve opening is set to 90% or more (step a1).
8) Write the base load flag into the flag RAM 46 of the cogeneration system controller 8 (step a1).
9), connect the TCP / IP network of the i-mode mobile phone 61 (step a20), display the flag content, the power purchase fee, and the fuel fee on the liquid crystal display (step a21); Flag RAM
75 (step a22).

FIG. 2B shows the mobile phone 61 of the receiver B.
5 shows a display example of the mobile phone 61 during the base load operation. Recipient B (addresses 201, 202, 203, and 192), which is not displayed in the emergency stop mode, can view the displayed content and save it by keyboard operation. When saving, the timestamp of the year, month, day, hour, minute, second is automatically added. The display on the mobile phone 61 can be cleared with the keyboard 64. The display is updated when there is a next incoming call in the same mode.

If the power purchase fee is lower than the fuel fee in step a17, a peak cut operation subroutine is executed (step a23). Then, a 30-minute timer is set (step a24), the power purchase fee and the fuel fee are captured (step a25), the fuel throttle valve opening is reduced to less than 10% (step a26), and the peak cut flag is set by the cogeneration system controller 8. Flag RA
Writing to M46 (step a27), the process proceeds to step a20.

FIG. 2C shows a display example of the portable telephone 61 of the receiver A during the peak cut operation in the portable telephone 61 of the receiver A. Not displayed in emergency stop mode. Recipient A
If you look at the display, you can save it with keyboard operation. When saving, the timestamp of the year, month, day, hour, minute and second is automatically added. The display on the mobile phone 61 can be cleared with the keyboard. The display is updated when there is a next incoming call in the same mode.

As described above, the monitoring system drives the generator 3 with the prime mover 2 to obtain electric power, and monitors the operating state of the cogeneration system 1 for recovering hot water, water vapor, etc. by exhaust heat with the mobile phone 61. The mobile phone 61 is provided with a means for requesting and inputting at least one operation mode preset in the mobile phone 61 when the mobile phone 61 is notified of the operating state of the cogeneration device 1.
As a result, the person who has received the notification of the operation state of the cogeneration apparatus 1 selects the most appropriate one of the operation modes such as “emergency stop”, “normal automatic stop”, and “idle operation” by using the mobile phone 61 and performs cogeneration. Since the device 1 can be controlled, the device can be prevented from being damaged, and a fire or a burn can be prevented beforehand. Therefore, it is possible to safely and rationally monitor the device.

If the cogeneration device 1 cannot receive the operation mode change from the mobile phone 61 within a predetermined time after the notification, for example, 120 seconds, a means for automatically stopping the prime mover 2 of the cogeneration device 1 is provided. A telephone 61 is provided. This ensures that, for example, even if the person who receives the report overlooks the report, or even if he / she can receive the report and cannot select and enter the optimal operation mode, he / she will be able to supply the fuel before the staff rushes to the site. Can be stopped to prevent damage to the device, and to prevent fires and burns, so that safer and more reliable and rational monitoring is possible.

When the cogeneration system 1 is operating normally, the content of the report is
And at least the amount of power sold or purchased, the amount of purchased power, the fuel used, or the cost of power generation at the commercial power connection point. It is possible to monitor the economic efficiency of the cogeneration system 1 during normal operation, and to estimate whether it is more economical to increase the purchased power amount than the power generation amount of the cogeneration system 1, or to determine whether the reverse is more economical. It is convenient because it can be easily known even in remote places.

If it is found that both the purchased power and the power generated by the cogeneration device 1 are significantly larger or smaller than normal, the prime mover 2, the generator 3, the system interconnection 9, the isolated operation detecting device 30, It is possible to predict that there is a failure in any of the loads and the like, so that it can be prevented before a large-scale system down occurs and reliability is improved.

In addition, when the power purchase charge is higher than the fuel consumption charge or the power generation cost charge for a predetermined time, for example, continuously for 30 minutes or more, the purchased power amount is changed to a predetermined value of the generator rated load.
For example, while controlling or disconnecting the power receiving commercial power line 33 so that the power receiving commercial power line 33 is set to 10% or less or zero, the opening of the fuel throttle valve of the prime mover 2 is maintained at a predetermined opening, for example, 90% or more. Show as Load.
Thereby, the capacity of the generator of the cogeneration device 1 can be utilized to the maximum, the power cost can be minimized, and the operation time of the generator 3 can be maintained as long as possible. The cost amortization is accelerated, and the economic rationality can be improved.

Further, by displaying the base load and the display on the mobile phone 61, it is understood that the customer is driving with great economic merit even in a remote place, and the convenience is improved.

When the purchased power rate is lower than the fuel consumption rate or the power generation cost rate for a continuous period of time, for example, 30 minutes or more, the power sold is controlled to zero and the purchased power is maximized. The fuel throttle valve opening is set to a predetermined opening, for example, 10% or less, less than 10, or the supply of combustion is stopped, and peak cut is displayed on the mobile phone 61. As a result, the minimum power purchase contract amount with the power company can be kept low, and the fuel cost of the generator 3 of the cogeneration device 1 can be saved, so that the customer's economic merit increases.

Further, by displaying the peak cut and the display on the mobile phone 61, even in a remote place, it is understood that the fuel-saving operation having a great economic merit of the customer is performed, and the convenience is improved.

Further, when controlling the electric energy, at least the commercial power line 10 is controlled via the isolated operation detecting device 30 so that the commercial power side is out of power and the operation such as transformer replacement is performed. Even if the power generated by the generator 3 of the cogeneration device 1 exceeds the load power, power transmission (called reverse power flow) can be prevented, and electric shock accidents can be prevented, thus improving safety.

Further, even when the generator side of the cogeneration apparatus 1 is out of power, the commercial power can be switched to only the load and the power can be supplied, so that the power outage of the load can be prevented during the repair of the equipment of the cogeneration apparatus 1 and the reliability is improved. .

At least a flag indicating that the control operation has been started is set at least between the cogeneration device 1 and the portable telephone 61.
By writing into the two memories, the same flag is written in the memory of the mobile phone 61 and the memory of the cogeneration device 1, and the receiver of the mobile phone 61 determines that the site where the cogeneration device 1 is located Since it is possible to confirm later whether the monitoring flag of the cogeneration device is caused by a malfunction by voice communication with a person who rushes to the monitoring system, the monitoring system itself can be easily checked and is convenient.

Further, even if the memory portion of the cogeneration apparatus 1 is physically lost due to an accident such as burnout, the history of the flag is stored in the memory of the mobile phone 61, so that the accident analysis can be performed reliably. It is convenient.

Furthermore, although the present invention has been described with reference to the distributed power generation of the cogeneration apparatus 1, the monitoring of the connection of the hybrid commercial system in which the cogeneration apparatus 1 is combined with the electric power of a solar power generation device, a wind power generation device, a fuel cell, etc. It goes without saying that the present invention can be similarly applied to a system.

[0078]

As described above, according to the first aspect of the present invention, a person who has received the notification of the operating state of the cogeneration apparatus can use a mobile phone to perform "emergency stop" or "normal automatic stop".
It is possible to control the cogeneration system by selecting the most suitable operation mode such as "idle operation", so that it is possible to prevent damage to the system and to prevent fires and burns, so it is safe and reliable to monitor rationally. It is possible to

According to the second aspect of the present invention, for example, even if a person who has received a message overlooks a message, or even if it is in a situation where it is impossible to select and input an optimal operation mode even if the message can be received, a person in charge at the site can Before rushing, the fuel supply can be stopped reliably to prevent damage to the equipment, fire,
Since burns can be prevented beforehand, safer and more reliable and rational monitoring is possible.

According to the third aspect of the present invention, the economical efficiency of the cogeneration system during normal operation can be monitored, and it is more economical to increase the purchased power amount than the power generation amount of the cogeneration system, or vice versa. It is convenient because it is easy to see the indication of whether it is more economical even in a remote place.

If it is found that both the amount of purchased power and the amount of power generated by the cogeneration device are significantly larger or smaller than normal, if any of the prime mover, the generator, the system interconnection device, the islanding detection device, the important load, etc. Can be foreseen, and can be prevented before a large-scale system failure occurs, improving reliability.

According to the fourth aspect of the present invention, the capacity of the generator of the cogeneration system can be utilized to the utmost, the power cost can be minimized, and the operating time of the generator can be maintained as long as possible. As a result, the cost amortization of the cogeneration device is accelerated, and the economic rationality can be improved.

Further, by displaying the base load and the display on the mobile phone, it is understood that the customer is driving with great economic merit even in a remote place, and the convenience is improved.

According to the fifth aspect of the present invention, it is possible to keep the minimum power purchase contract amount with the power company low,
Since the fuel cost of the generator of the cogeneration system can be saved, the customer's economic advantage is increased.

Further, by displaying the peak cut and the display on the mobile phone, it can be understood that the fuel saving operation with great economic merit of the customer is performed even in a remote place, and the convenience is improved.

According to the invention described in claim 6, the power generated by the generator of the cogeneration device exceeds the load power while the commercial power side is out of service and the operation such as the transformer replacement occurs. In the event of power failure, power transmission (called reverse power flow) can be prevented, and electric shock accidents can be prevented, improving safety.

Further, even when a power failure occurs on the generator side of the cogeneration system, the commercial power can be switched to only the load and the power can be supplied. Therefore, the power failure of the load during repair of the cogeneration system can be prevented, and the reliability is improved.

According to the seventh aspect of the present invention, in the operation of the monitoring system, the same flag is written in two places of the memory of the mobile phone and the memory of the cogeneration device. By voice communication with a person who has rushed to the site where the cogeneration device is located, it is possible to follow up whether or not the monitoring flag on the cogeneration device side is caused by a malfunction, so that the monitoring system itself can be easily checked and convenient.

Further, even if the memory portion of the cogeneration system is physically lost due to an accident such as burnout, the history of the flag is stored in the memory of the mobile phone, so that the accident analysis can be performed reliably, which is convenient. is there.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a cogeneration device.

FIG. 2 is a configuration diagram of a monitoring system.

FIG. 3 is a block diagram of a mobile phone that can be used for TCP / IP packet communication.

FIG. 4 is a flowchart of the monitoring system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cogeneration device 2 prime mover 3 generator 61 mobile phone

Claims (7)

[Claims] 1. A monitoring system for driving a generator by a prime mover to obtain electric power and monitoring an operation state of a cogeneration device for recovering hot water, steam and the like by exhaust heat with a mobile phone, wherein the cogeneration device is provided. A monitoring system, characterized in that the mobile phone is provided with means capable of requesting and inputting at least one operation mode set in advance in the mobile phone when the notification of the driving state is received by the mobile phone. 2. The portable telephone is provided with means for automatically stopping an engine of the cogeneration apparatus when the cogeneration apparatus cannot receive a driving mode change from the portable telephone within a predetermined time after the notification. The monitoring system according to claim 1, wherein: 3. During normal operation of the cogeneration system, the contents of the notification include at least power sales or purchased power, purchased power charges, used fuel charges, or power generation at the commercial power connection point with the cogeneration devices. The monitoring system according to claim 1, wherein the cost is a fee, and the content of the report is displayed on the mobile phone. When the purchased electricity charge is higher than the fuel consumption charge or the power generation cost charge continuously for a predetermined time or more, the received commercial electric power is set so that the purchased electric power is equal to or less than a predetermined% of the rated load of the generator or zero. 4. The monitoring system according to claim 3, wherein the power receiving amount is controlled or disconnected, the fuel throttle valve opening of the prime mover is maintained at a predetermined opening or more, and a base load is displayed on the mobile phone. 5. If the purchased power rate is lower than the fuel usage rate or the generation cost rate continuously for a predetermined time or more, control is performed so that the sold power amount is zero and the purchased power amount is maximum, and the fuel throttle valve of the prime mover is opened. The monitoring system according to claim 3, wherein the degree is equal to or less than a predetermined opening degree or the supply of combustion is stopped, and a peak cut is displayed on the mobile phone. 6. The monitoring system according to claim 4, wherein at the time of the power amount control, a commercial power line is controlled via at least an islanding operation detection device. 7. The method according to claim 1, wherein a flag indicating that the control operation has been started is written into at least two memories of the cogeneration device and the mobile phone. Monitoring system according to paragraph.