JP6865620B2 - Energy supply system - Google Patents

Description

The present invention is supplied via a power generation unit having a power generation unit that generates energy using fuel gas supplied via a microcomputer meter and a power generation side control unit that controls the operation of the power generation unit, and a microcomputer meter. The microcomputer meter is provided with a heat source unit having a heat source unit that generates heat using the fuel gas and a heat source side control unit that controls the operation of the heat source unit, and the flow rate of the fuel gas is equal to or less than the set determination amount. When the fuel gas non-consumption state that satisfies a predetermined judgment condition including the continuous state for the set judgment time or more does not occur during the leakage judgment period, the alarm is activated or the fuel gas supply is cut off. Regarding the energy supply system.

If the fuel gas non-consumption state that satisfies a predetermined judgment condition including the state where the flow rate of the fuel gas is equal to or less than the set judgment amount continues for the set judgment time or more does not occur during the leakage judgment period, the microcomputer meter will display the microcomputer meter. Activate an alarm or shut off the fuel gas supply. When the microcomputer meter activates an alarm, for example, the worker who receives the report has to cut off the supply of fuel gas and inspect whether or not the fuel gas is actually leaking. Further, when the microcomputer meter cuts off the supply of fuel gas, it is troublesome to perform an operation to restore the microcomputer meter to the fuel gas supply state. Therefore, it is preferable that the microcomputer meter can avoid the alarm operation due to the fact that the fuel gas non-consumption state does not occur during the leakage determination period and can avoid shutting off the fuel gas supply.

However, in an energy supply system provided with a power generation unit that generates power using fuel gas supplied via a microcomputer meter, the power generation unit is relatively relatively started and stopped instead of repeatedly operating and stopping the power generation unit. It is often operated continuously for a long period of time. Therefore, if the power generation unit continues to operate beyond the leakage determination period (for example, 30 days), the fuel flow rate required based on the set determination amount (for example, 1.0 L / h) or less. Since the gas non-consumption state does not occur during the leak determination period, a situation occurs in which the microcomputer meter activates an alarm or shuts off the fuel gas supply.

The energy supply system described in Patent Document 1 includes a power generation unit having a power generation unit that generates power using fuel gas supplied via a microcomputer meter and a power generation side control unit that controls the operation of the power generation unit, and a power generation unit. It includes a heat source unit having a heat source unit that generates heat using fuel gas supplied via the same microcomputer meter and a heat source side control unit that controls the operation of the heat source unit. In this energy supply system, the power generation unit is configured to be able to know the amount of fuel gas consumed by both the power generation unit and the heat source unit.
Then, after stopping the operation of the power generation unit on the day (28 days) corresponding to 2 days before the leakage determination period (30 days) or the day (29 days) corresponding to 1 day before, the operation of the power generation unit is stopped. Determines whether or not the predetermined time (60 minutes) corresponding to the set duration (60 minutes) has been continued for the time when the fuel gas is not supplied to the power generation unit and the heat source unit, and if the predetermined time is continued, It is configured to restart the power generation unit assuming that the start prohibition release condition is satisfied.

As described above, in the energy supply system described in Patent Document 1, at least the power generation unit intentionally provides a period during which the fuel gas is not consumed before the period during which the fuel gas non-consumption state does not occur reaches the leakage determination period. By doing so, we are trying to generate a fuel gas non-consumption state.

Japanese Unexamined Patent Publication No. 2017-022078

In the energy supply system described in Patent Document 1, the power generation unit is configured to be able to know the amount of fuel gas consumed by both the power generation unit and the heat source unit, but the power generation unit is the fuel gas in the heat source unit. It may not be possible to know the amount of consumption of. For example, when an additional power generation unit is installed later in a user's house where a heat source unit such as a water heater is already installed, information communication between the power generation unit and the heat source unit cannot be performed.

Therefore, the power generation unit can know the consumption amount of the fuel gas in the power generation unit among the power generation unit and the heat source unit to which the fuel gas is supplied via the same microcomputer meter, but the fuel gas in the heat source unit. It is not possible to know the amount of consumption of. As a result, there is a problem that the power generation unit cannot accurately determine whether or not the start prohibition release condition is satisfied.

The present invention has been made in view of the above problems, and an object of the present invention is to supply energy capable of restarting the operation of the power generation unit at an appropriate timing after stopping the operation of the power generation unit when the stop execution condition is satisfied. The point is to provide a system.

The characteristic configuration of the energy supply system according to the present invention for achieving the above object is a power generation unit that generates power using fuel gas supplied via a microcomputer meter, and a power generation side control that controls the operation of the power generation unit. A power generation unit having a unit, a heat source unit that generates heat using fuel gas supplied via the microcomputer meter, and a heat source unit having a heat source side control unit that controls the operation of the heat source unit. The microcomputer meter is provided with a fuel gas non-consumption state during the leakage determination period, which satisfies a predetermined determination condition including a state in which the flow rate of the fuel gas is equal to or less than the set determination amount for the set determination time or longer. An energy supply system that is configured to activate an alarm or cut off the supply of fuel gas when it is not present.
A server device capable of transmitting and receiving information via a communication line between the power generation unit and the heat source unit is provided.
The server device provides unique first identification information given to the power generation unit and the heat source unit with respect to the power generation unit and the heat source unit to which fuel gas is supplied via the same microcomputer meter. It is stored in association with the unique second identification information that has been created.
The power generation side control unit transmits the first consumption information regarding the fuel gas consumption in the power generation unit to the server device together with the first identification information.
The heat source side control unit transmits the second consumption information regarding the consumption amount of fuel gas in the heat source unit to the server device together with the second identification information.
The server apparatus includes a pre-Symbol first consumption information, before SL and a second consumption amount information received via the communication line and stored, based on said first consumption information and the second consumption amount information Te, when it is determined that stop execution condition of the power generation unit is satisfied, the leakage determination avoiding stop processing for transmitting a command to stop until start prohibition release condition the operation of the power generation portion with respect to the microcomputer meter is filled with the power generating unit The amount of fuel gas consumed by the power generation unit and the heat source unit during a predetermined standby period after the power generation unit has stopped operation due to the leakage determination avoidance stop process. The point is that the start prohibition release condition is that there is a predetermined gas non-use state including that the state of being equal to or less than the set determination amount is continuous for the set determination time or more.

According to the above-mentioned feature configuration, the server device transmits the first consumption information regarding the fuel gas consumption in the power generation unit and the second consumption information regarding the fuel gas consumption in the heat source unit via a communication line. Receive and memorize. Then, when the server device determines that the stop execution condition of the power generation unit is satisfied based on the first consumption amount information and the second consumption amount information, the server device stops the operation of the power generation unit until the start prohibition release condition is satisfied. Executes the stop processing for avoiding leakage judgment that transmits the command to the power generation unit. In this way, after the stop execution condition is satisfied, the operation of the power generation unit is stopped until the start prohibition release condition is satisfied, that is, a period for forcibly stopping the consumption of fuel gas by the operation of the power generation unit is provided. Therefore, the possibility that the microcomputer meter determines that the fuel gas non-consumption state has occurred during that time is increased.

In particular, in this feature configuration, in the server device, the amount of fuel gas consumed by the power generation unit and the heat source unit is set and determined during a predetermined standby period after the power generation unit has stopped operation due to the stop processing for avoiding leakage determination. The start prohibition release condition is that there is a predetermined gas non-use state including the following states being continuous for the setting determination time or longer. In other words, the server device has information close to the information (fuel gas consumption in the power generation section, heat source section, and other devices) that is the basis for the microcomputer meter to determine whether or not a fuel gas non-consumption state has occurred. (Consumption of fuel gas in the power generation unit and the heat source unit) is used to determine whether or not the start prohibition release condition is satisfied. As a result, when the server device determines that the start prohibition release condition is satisfied during the standby period and commands the restart of the operation of the power generation unit, the microcomputer meter also states that a fuel gas non-consumption state has occurred during the standby period. The possibility of judgment increases. Therefore, after the operation of the power generation unit is stopped when the stop execution condition is satisfied, the operation of the power generation unit can be restarted at an appropriate timing.

According to the above-mentioned feature configuration, the server device has the unique first identification information given to the power generation unit and the heat source of the power generation unit and the heat source unit to which the fuel gas is supplied via the same microcomputer meter. It is stored in association with the unique second identification information given to the unit. Therefore, even if the server device receives the first consumption information and the second consumption information from a plurality of power generation units and heat source units, the server device first receives fuel gas from the power generation unit to which fuel gas is supplied via a specific microcomputer meter. The first consumption information regarding the consumption of fuel gas in the power generation unit received together with the identification information, and the heat source unit received together with the second identification information from a specific heat source unit to which the fuel gas is supplied via the same microcomputer meter. It can be managed in association with the second consumption information regarding the consumption of fuel gas in. Then, the server device determines whether or not the stop execution condition of the power generation unit is satisfied and whether the start prohibition release condition is satisfied based on the first consumption amount information and the second consumption amount information that are associated and managed. Whether or not it can be determined.

Yet another characteristic configuration of the energy supply system according to the present invention includes a power generation unit that generates power using fuel gas supplied via a microcomputer meter, and a power generation side control unit that controls the operation of the power generation unit. The microcomputer includes a power generation unit, a heat source unit that generates heat using fuel gas supplied via the microcomputer meter, and a heat source side control unit that controls the operation of the heat source unit. The meter gives an alarm when a fuel gas non-consumption state that satisfies a predetermined judgment condition including a state in which the flow rate of fuel gas is equal to or less than the set judgment amount continues for the set judgment time or more does not occur during the leakage judgment period. An energy supply system that is configured to operate or cut off the supply of fuel gas.
A server device capable of transmitting and receiving information via a communication line between the power generation unit and the heat source unit is provided.
The server device provides unique first identification information given to the power generation unit and the heat source unit with respect to the power generation unit and the heat source unit to which fuel gas is supplied via the same microcomputer meter. It is stored in association with the unique second identification information that has been created.
The heat source side control unit transmits the second consumption information regarding the consumption amount of fuel gas in the heat source unit to the server device together with the second identification information.
The server apparatus transmits the second consumption information received via the communication line from the heat source unit to the power generating unit,
The power generation side control unit satisfies the stop execution condition of the power generation unit based on the first consumption information regarding the consumption amount of fuel gas in the power generation unit and the second consumption information received from the server device. If it is determined that the power generation unit has been stopped, the operation of the power generation unit is stopped until the start prohibition release condition is satisfied. During the predetermined standby period, the amount of fuel gas consumed by the power generation unit and the heat source unit determined based on the first consumption information and the second consumption information received from the server device is the said. The point is that the start prohibition release condition is that there is a predetermined gas non-use state including that the state of being equal to or less than the set determination amount is continuous for the set determination time or more.

According to the above-mentioned feature configuration, the server device transmits the second consumption information regarding the consumption amount of fuel gas in the heat source unit received from the heat source unit via the communication line to the power generation unit. As a result, the power generation side control unit receives the first consumption information regarding the fuel gas consumption in its own power generation unit and the second consumption information regarding the fuel gas consumption in the heat source unit received from the server device. You can know. Then, when the power generation side control unit determines that the stop execution condition of the power generation unit is satisfied based on the first consumption information and the second consumption information, the operation of the power generation unit is started until the start prohibition release condition is satisfied. Executes the stop processing for avoiding leakage judgment to be stopped. In this way, after the stop execution condition is satisfied, the operation of the power generation unit is stopped until the start prohibition release condition is satisfied, that is, a period for forcibly stopping the consumption of fuel gas by the operation of the power generation unit is provided. Therefore, the possibility that the microcomputer meter determines that the fuel gas non-consumption state has occurred during that time is increased.

In particular, in this feature configuration, the power generation side control unit receives the first consumption information and the second consumption information received from the server device during the standby period after the power generation unit stops operation due to the stop processing for avoiding leakage judgment. The start prohibition release condition is that there is a predetermined gas non-use state including the state where the consumption amount of fuel gas in the power generation unit and the heat source unit determined based on is continuous for the set determination time or more. And. That is, the power generation side control unit contains information (consumption amount of fuel gas in the power generation unit, heat source unit, and other devices) that is the basis for the microcomputer meter to determine whether or not a fuel gas non-consumption state has occurred. Using close information (fuel gas consumption in the power generation section and heat source section), it is determined whether or not the start prohibition release condition is satisfied. As a result, when the power generation side control unit determines that the start prohibition release condition is satisfied during the standby period and restarts the operation of the power generation unit, the microcomputer meter also generates a fuel gas non-consumption state during the standby period. Is more likely to be determined. Therefore, after the operation of the power generation unit is stopped when the stop execution condition is satisfied, the operation of the power generation unit can be restarted at an appropriate timing.

According to the above-mentioned feature configuration, the server device has the unique first identification information given to the power generation unit and the heat source of the power generation unit and the heat source unit to which the fuel gas is supplied via the same microcomputer meter. It is stored in association with the unique second identification information given to the unit. Therefore, even if the server device receives the second consumption information regarding the fuel gas consumption in the heat source unit from the plurality of heat source units together with the second identification information, which power generation unit (the second consumption information) receives the second consumption information. It is possible to specify whether it should be transmitted to the power generation unit).

Yet another characteristic configuration of the energy supply system according to the present invention includes a state in which the consumption amount of fuel gas in the power generation unit and the heat source unit is continuously equal to or less than the set determination amount for the set determination time or more. The point is that the stop execution condition is that the state in which the gas is not used is continuous for a predetermined period shorter than the leak determination period.

According to the above feature configuration, the power generation side control unit sets a predetermined period shorter than the leakage determination period, so that the microcomputer meter determines that the fuel gas non-consumption state does not occur during the leakage determination period. Before this, it is determined that the stop execution condition of the power generation unit is satisfied, and the operation of the power generation unit is stopped. As a result, it can be expected that a situation in which the microcomputer meter activates an alarm or cuts off the supply of fuel gas is avoided.

It is a figure which shows the structure of the energy supply system. It is a figure which described the structure of the heat source unit concretely. It is the figure which described the structure of the power generation unit concretely. It is a flowchart explaining the leakage determination avoidance processing performed by a server device. It is a flowchart explaining the leakage determination avoidance processing performed by the power generation side control unit. It is a figure which shows the structure of the energy supply system of 3rd Embodiment.

The energy supply system according to the embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing a configuration of an energy supply system. The energy supply system includes a power generation unit 40 and a heat source unit 10. The power generation unit 40 includes a combined heat and power unit 41 as a power generation unit A that generates power using the fuel gas G supplied via the microcomputer meter M, and a power generation side control unit 92 that controls the operation of the combined heat and power unit 41. Have. The heat source unit 10 includes a heat source unit B that generates heat using the fuel gas G supplied via the microcomputer meter M, and a heat source side control unit 25 that controls the operation of the heat source unit B. In addition, the power generation unit 40 of the present embodiment includes a power generation side communication unit 93, a power generation side storage unit 94, and a flow meter Fa. Further, the heat source unit 10 of the present embodiment includes a heat source side communication unit 26, a heat source side storage unit 27, and a flow meter Fb.
The specific configurations of the power generation unit 40 and the heat source unit 10 will be described later.

In the present embodiment, the power generation unit 40 and the heat source unit 10 are installed in the same facility 5 (for example, a residence or a business establishment). Therefore, the fuel gas G is supplied to the combined heat and power supply unit 41 of the power generation unit 40 and the heat source unit B of the heat source unit 10 via the gas pipe 1 connected to the downstream side of the same microcomputer meter M. The gas pipe 1 is also connected to another gas consuming device 2 such as a gas stove, and the fuel gas G is supplied.

In the microcomputer meter M, a fuel gas non-consumption state that satisfies a predetermined determination condition including a state in which the flow rate of the fuel gas G is equal to or less than the set determination amount continues for the set determination time or more does not occur during the leakage determination period. Occasionally, it has a function of activating an alarm or shutting off the supply of fuel gas G. For example, in the case of the ultrasonic type microcomputer meter M, the judgment condition (that is, the flow rate of the fuel gas G) for being considered to be in the fuel gas non-consumption state during the leakage judgment period (for example, 30 days) of the microcomputer meter M. When the setting determination amount (for example, 1.0 L / h) or less is the setting determination time or more (for example, 2 minutes or more), the integrated value of the duration is the set value or more (for example, 60 minutes). If the condition) is not satisfied, the microcomputer meter M activates an alarm or shuts off the supply of the fuel gas G.

[Heat source unit 10]
As illustrated in FIG. 2, the heat source unit 10 is configured as a general hot water supply heater, and hot water W supplied via the heat source side water inlet 20a is heated to a preset hot water supply temperature to supply hot water. In addition to performing a so-called hot water supply operation of supplying to the plug 30, a heating operation of heating the heat medium H passing through the heating circulation path 34 for circulating the heated heat medium to the heating radiator 33 is performed. As the external interface, the hot water W of the water supply line 20 is provided on one end side of the water supply line 20 and is provided on the other end side of the water supply line 20 and the heat source side water inlet portion 20a for taking the hot water W into the water supply line 20 from the outside. Other than the heat source side water discharge section 20b, the heat medium flow path 16 provided on one end side of the heat medium flow path 16, the heat source side heat medium receiving section 16a, which is provided on one end side of the heat medium flow path 16 and takes in the heat medium H from the outside into the heat medium flow path 16. A heat source side heat medium discharge unit 16b that discharges the heat medium H of the heat medium flow path 16 to the outside, a fuel gas supply unit 14 that takes in a fuel gas G such as city gas, and the like are provided on the end side. The water pipe 20 is provided with a bypass adjusting valve 24 in a form of connecting the upstream side and the downstream side of the hot water supply heat exchanger 11b.

By connecting the heat source side water outlet 20b to the hot water tap 30, the hot water W discharged from the heat source side water outlet 20b is supplied to the hot water tap 30. Further, the heat source side heat medium receiving unit 16a and the heat source side heat medium discharging unit 16b take in or take in the heat medium H circulating in the heating circulation path 34 provided between the heat source side heat medium receiving unit 16a and the heating radiator 33 such as a hot water floor heating panel. It is connected to the heating circulation path 34 in the form of discharging. In the heating circulation path 34, of the total amount of the heat medium H discharged from the heat source side heat medium discharge unit 16b, a predetermined flow rate is supplied to the heating radiator 33 provided in the heating circulation path 34 via the forward header 31. On the other hand, the heat medium H that has passed through the heating radiator 33 passes through the return header 32 and passes through the power generation side heat medium flow path 104 that guides the entire amount of the heat medium H that has passed through the return header 32 to the power generation unit 40. It is arranged so as to flow and return to the heat medium receiving portion 16a on the heat source side.

The heat source unit 10 is provided with a heat source side control unit 25 including a computer that controls the operation of the burners 11a and 12a and the operation of various auxiliary machines such as valves and pumps.

The heat source unit 10 is incorporated into the heat source side water inlet section 20a to heat the hot water W discharged from the heat source side outlet section 20b, and the heat source side heat medium receiving section 16a. It has a heating unit 12 for heating the heat medium H discharged from the discharge unit 16b. The hot water supply heating unit 11 and the heating heating unit 12 correspond to the heat source unit B of the present invention.
The hot water supply heating unit 11 exchanges heat between the burner 11a, which burns the fuel gas G supplied via the regulating valve 11c with the combustion air supplied by the fan 13, and the high-temperature combustion gas discharged from the burner 11a. It is configured to have a hot water supply heat exchanger 11b for heating the hot water W flowing through the water supply line 20.
The heating unit 12 for heating exchanges heat between the burner 12a, which burns the fuel gas G supplied via the regulating valve 12c by the combustion air supplied by the fan 13, and the high-temperature combustion gas discharged from the burner 12a. It is configured to have a heating heat exchanger 12b for heating the heat medium H passing through the heat medium flow path 16.

Further, in the water pipe 20, a third temperature sensor 21 for detecting the temperature of the hot water W taken in from the heat source side water inlet portion 20a (hereinafter, may be referred to as “heat source side water inlet temperature”), and a heat source side water discharge unit. A fourth temperature sensor 22 for detecting the temperature of the hot water W discharged from the hot water W (hereinafter, may be referred to as “heat source side discharge temperature”) and a water switch 23 for detecting the flow of the hot water W are arranged. ..
On the other hand, in the heat medium flow path 16, the first temperature sensor 17 detects the temperature of the heat medium H taken in from the heat source side heat medium receiving portion 16a (hereinafter, may be referred to as “heat source side heat input medium temperature”). The second temperature sensor 18 for detecting the temperature of the heat medium H discharged from the heat source side heat medium discharge unit 16b (hereinafter, may be referred to as “heat source side heat output medium temperature”) and the heat medium H are sent out. A heat medium pump 19 is arranged.

With such a configuration, the heat source side control unit 25 heats the hot water W supplied from the heat source side water inlet unit 20a to a set hot water supply temperature set in advance by a remote control (not shown) and supplies the hot water to the hot water tap 30. During the operation or the heating operation, the heating operation of heating the heat medium H circulating in the heating circulation path 34 provided between the heating radiator 33 and the heating radiator 33 to a preset target temperature can be executed.

[Power generation unit 40]
As illustrated in FIG. 3, the power generation unit 40 is configured as an integrated type in which various devices are arranged in one housing 60 arranged side by side with the heat source unit 10 described above. As an external interface, the power generation unit 40 has a power generation side water inlet unit 80a that takes in hot water W (clean water) from the water supply, a power generation side water discharge unit 78a that discharges hot water W to the heat source unit 10 side, and a drainage channel that drains the hot water storage tank 90. 74, a drain valve 75, a power generation side heat medium receiving section 58a that takes in the heat medium H for heating from the heat source unit 10 side, a power generation side heat medium discharging section 58b that discharges the heat medium H to the heat source unit 10 side, and the like are provided. There is.
Further, a combined heat and power supply unit 41 provided on the power generation unit 40 side and a power generation side control unit 92 including a computer for controlling the operation of various auxiliary machines such as valves and pumps are provided.

The combined heat and power supply unit 41 as the power generation unit A included in the power generation unit 40 is a fuel cell power generation device, an engine-driven power generation device, or the like. For example, a fuel cell power generation device includes a reforming processing device that reforms and processes the supplied fuel gas G, and a fuel cell that generates power using hydrogen or the like obtained by the reforming treatment. An engine-driven power generator includes an engine that operates by consuming fuel gas G as fuel and a generator driven by the engine. The electric power generated by the combined heat and power supply unit 41 is appropriately supplied to an external power load or the like in a form of being connected to a commercial power source via an inverter or the like. Further, the heat generated by the combined heat and power supply unit 41 is used for heating the hot water W, and a hot water storage tank 90 for storing the heated hot water W is provided.

The combined heat and power supply unit 41 has a structure of being cooled by, for example, cooling water C passing through a cooling water jacket (not shown) provided inside, and is provided with a cooling water circulation path 42 in which the cooling water C circulates. There is. In the cooling water circulation path 42, a cooling water pump 46 that sends out the cooling water C along the circulation direction of the cooling water C, an electromagnetic valve 47 that can interrupt the flow of the cooling water C, and a cooling water jacket in the heat and power combined unit 41 ( (Not shown), a sixth temperature sensor 50 that detects the temperature at which the cooling water enters the heating heat exchanger 56 provided on the downstream side of the cooling water jacket with the cooling water C discharged from the cooling water jacket, and a heat medium described later. A heating heat exchanger 56 that exchanges heat between the heat medium H passing through the bypass path 104b and the cooling water C after leaving the cooling water jacket in the cooling water circulation path 42, and the outlet cooling water of the heating heat exchanger 56. The eighth temperature sensor 57 that detects the temperature, the cooling water three-way adjusting valve 45 that controls the distribution flow rate of the cooling water C that passes between the side of the cooling water circulation path 42 and the side of the cooling water bypass path 43, and the cooling water C. The buffer tank 51 for temporarily storing the water is arranged in the order described.

The buffer tank 51 is provided with a fifth temperature sensor 49 that detects the temperature at which the cooling water C is temporarily stored and the temperature at which the cooling water merges on the downstream side merged by the cooling water three-way regulating valve 45. .. Further, the hot water W supplied to the water input unit 80a on the power generation side is appropriately replenished to the buffer tank 51 as cooling water C via the replenishment water channel 53 and the solenoid valve 52. The cooling water bypass passage 43 is provided with a hot water storage heat exchanger 55 that exchanges heat between the hot water water W and the cooling water C stored in the hot water storage tank 90, and detects the outlet cooling water temperature of the hot water storage heat exchanger 55. A seventh temperature sensor 54 is provided.

That is, while heat is being generated in the heat and power combined unit 41, the heat medium pump 19 is operated to allow the heat medium H to flow through the heat exchanger 56 for heating, and the cooling water pump 46 is operated. When the cooling water C is circulated in the cooling water circulation path 42, the cooling water C heated by passing through the heat and power combined unit 41 passes through the hot water storage heat exchanger 55 and the heating heat exchanger 56, so that the hot water W and the heating water C are passed. Heat is exchanged with the heat medium H, and the heat is supplied to the combined heat and power supply unit 41 again.

Further, in the cooling water circulation passage 42, an electromagnetic valve that adjusts the flow rate of the combined heat and power unit bypass path 44 that connects the upstream side and the downstream side of the combined heat and power unit 41 and the cooling water C that passes through the combined heat and power unit bypass path 44. 48 and an electromagnetic valve 47 for adjusting the flow rate of the cooling water circulation path 42 immediately before the inlet of the combined heat and power supply unit 41 are provided. As a result, in a state where the cooling water C is circulated in the cooling water circulation path 42, the electromagnetic valve 47 arranged on the upstream side of the combined heat and power supply section 41 is closed and the electromagnetic valve arranged in the bypass path 44 of the combined heat and power supply section 44. By opening the valve 48, the entire amount of the cooling water C can be passed through the combined heat and power unit bypass path 44 by bypassing the combined heat and power unit 41.

If an explanation is added regarding the arrangement position of the heating heat exchanger 56, the heating heat exchanger 56 is cooled on the downstream side of the combined heat and power supply unit 41 in the flow direction of the cooling water C in the cooling water circulation path 42. A connection portion between the water circulation passage 42 and the heat and power combined unit bypass passage 44 and an upstream connection portion between the cooling water bypass passage 43 and the cooling water circulation passage 42 (upstream connection in the flow direction of the cooling water C in the cooling water bypass passage 43). It is arranged between the part).

The hot water storage tank 90 is configured as a closed tank in which hot water W is supplied to the lower 90b and hot water W is taken out from the upper 90a to the power generation side discharge portion 78a.
The upper pipeline 66 connected to the upper portion 90a of the hot water storage tank 90 is connected to the power generation side water discharge portion 78a via the hot water three-way adjusting valve 77 and the hot water outlet pipe 78, and is connected to the upstream side of the hot water three-way adjusting valve 77. Is provided with a ninth temperature sensor 76 that detects the temperature of the hot water W taken out from the upper 90a of the hot water storage tank 90 to the upper pipeline 66 (hereinafter, may be referred to as “tank take-out hot water temperature”). The temperature of the hot water taken out of the tank may be detected by the temperature sensor 91a provided at the uppermost portion of the plurality of temperature sensors 91 distributed in the vertical direction of the hot water storage tank 90 instead of the ninth temperature sensor 76. I do not care.
Further, a water supply pipe line 82 leading to a water inlet portion 80a on the power generation side is connected to the hot water three-way adjusting valve 77. Further, the hot water outlet pipe 78 and the water supply pipe 82 are connected by a bypass pipe 86, and an electromagnetic valve 87 capable of interrupting the flow of hot water W is arranged in the bypass pipe 86.
That is, the hot water three-way adjusting valve 77 mixes the hot water W supplied from the water supply pipeline 82 with the hot water W supplied from the upper portion 90a of the hot water storage tank 90 to the power generation side discharge portion 78a with the mixing ratio adjustment. Act as a possible mixing part.
It should be noted that, on the downstream side of the connection portion of the hot water outlet line 78 with the bypass line line 86, the flow rate sensor 79 for detecting the flow rate of the hot water water W and the power generation side water discharge section 78a discharge the hot water water W along the flow direction. The tenth temperature sensor 81 for detecting the temperature of the hot water W (hereinafter, may be referred to as “power generation side discharge temperature”) is arranged in the order described.
On the other hand, on the upstream side of the connection portion of the water supply pipe 82 with the bypass pipe 86, the pressure reducing valve 84 for adjusting the pressure of the hot water W and the water inlet portion 80a on the power generation side are supplied along the flow direction of the hot water W. The eleventh temperature sensor 85 that detects the temperature of the hot water W and the check valve 83 that prevents the backflow of the hot water W are arranged in the order described.

Further, the water supply pipe line 82 is connected to the bottom pipe line 72 connected to the lower part 90b of the hot water storage tank 90 via a check valve 89. With this configuration, the hot water storage tank 90 has hot water from the upper part 90a. At the same time that W is taken out, hot water W is supplied from the lower portion 90b via the water supply pipe line 82 and the bottom pipe line 72.

To add a description regarding the heating circulation path 34, the heating circulation path 34 has a power generation side heat medium flow path 104 that guides the entire amount of the heat medium H that has passed through the return header 32 to the power generation unit 40, and also has a power generation side heat medium. It has a heat medium bypass path 104b that bypasses a part or all of the heat medium H passing through the flow path 104 toward the heating heat exchanger 56.
To add a description, the power generation side heat medium flow path 104 is arranged in the housing of the power generation unit 40 via the power generation side heat medium receiving portion 58a and the power generation side heat medium discharging portion 58b. It is connected to the flow path 104a. Further, a heat medium three-way adjusting valve 113 is provided that can adjust the distribution flow rate of the heat medium H to the side of the heat medium flow path 104a on the power generation side in the housing and the side of the heat medium bypass path 104b.
The heat medium that is the temperature of the heat medium on the downstream side of the portion where the heat medium that has passed through both the heat medium flow path 104a on the power generation side in the housing and the heat medium bypass path 104b joins the heat medium flow path 104a on the power generation side in the housing. A twelfth temperature sensor 102b for detecting the merging temperature is provided.
Although the details will be described later, the power generation side control unit 92 uses the heat medium three-way adjusting valve 113 to distribute the heat medium H to the power generation side heat medium flow path 104a side and the heat medium bypass path 104b side in the housing. It is configured to perform heat medium circulation state control in the form of adjustment.
Here, the power generation unit 40 according to the embodiment does not have a heat medium pump that pumps the heat medium H into the housing thereof, and has a discharge pressure of the heat medium pump 19 provided inside the heat source unit 10. The heat medium is circulated.

[Server device 4]
The energy supply system includes a server device 4 capable of transmitting and receiving information between the power generation unit 40 and the heat source unit 10 via a communication line 3. The server device 4 receives the first consumption information regarding the fuel gas consumption in the combined heat and power supply unit 41 and the second consumption information regarding the fuel gas consumption in the heat source unit B via the communication line 3. And remember. With this configuration, for example, the power generation unit 40 and the heat source unit 10 can be simply incorporated into the power generation unit 40 and the heat source unit 10 by incorporating the communication units (power generation side communication unit 93, heat source side communication unit 26) that enable Internet connection into the power generation unit 40 and the heat source unit 10. Information communication with and from is possible.

Specifically, the power generation unit 40 transmits the first consumption amount information regarding the consumption amount of the fuel gas G in the combined heat and power supply unit 41 to the server device 4 at a predetermined timing. Similarly, the heat source unit 10 transmits the consumption information regarding the consumption amount of the fuel gas G in its own heat source unit B to the server device 4 at a predetermined timing. Therefore, the server device 4 can know the total consumption amount of the fuel gas G in the combined heat and power supply unit 41 and the heat source unit B to which the fuel gas G is supplied via the same microcomputer meter M.

[Leakage judgment avoidance processing]
When the server device 4 determines that the stop execution condition of the combined heat and power supply unit 41 is satisfied based on the first consumption amount information and the second consumption amount information received from the power generation unit 40 and the heat source unit 10 as described above, the server device 4 determines that the stop execution condition of the combined heat and power supply unit 41 is satisfied. A leak determination avoidance stop process is executed to transmit a command to stop the operation of the combined heat and power supply unit 41 until the start prohibition release condition is satisfied to the power generation unit 40.

In the present embodiment, in the server device 4, the combined heat and power unit 41 and the heat source unit B during a predetermined standby period (24 hours) after the combined heat and power unit 41 has stopped operation due to the stop processing for avoiding leakage determination. The start prohibition release condition is that there is a gas non-use state including the state where the fuel gas consumption is equal to or less than the set judgment amount for the set judgment time or longer.

Further, the server device 4 leaks a situation in which there is no gas non-use state including a state in which the consumption amount of fuel gas in the combined heat and power unit 41 and the heat source unit B is equal to or less than the set determination amount for the set determination time or longer. The stop execution condition is that a predetermined period (for example, 26 days) shorter than the determination period (30 days) is continuous.

FIG. 4 is a flowchart illustrating a leak determination avoidance process performed by the server device 4. In the leakage determination avoidance process shown in FIG. 4, when the stop execution condition of the combined heat and power unit 41 is satisfied, the operation of the combined heat and power unit 41 is operated until the condition for releasing the start prohibition is satisfied so that the fuel gas non-consumption state occurs. It includes a plurality of processes such as a leak determination avoidance stop process for issuing a stop command and a process for instructing the transmission of a message to refrain from using fuel gas.
Further, in the present embodiment, as shown in FIGS. 1 to 3, each of the power generation unit 40 and the heat source unit 10 is provided with a flow meter Fa and a flow meter Fb for measuring the flow rate of the fuel gas G, and these are provided. The first consumption amount information and the second consumption amount information measured in 1 are transmitted to the server device 4 via the communication line 3. As a result, the server device 4 can recognize the consumption amount of the fuel gas G in the combined heat and power supply unit 41 and the heat source unit B.

First, in the server device 4, there is no first gas non-use state including a state in which the consumption amount of the fuel gas G in the combined heat and power unit 41 and the heat source unit B is equal to or less than the set determination amount for the set determination time or more. Is determined whether or not is continuous for a predetermined period (26 days) shorter than the leakage determination period (30 days) (# 10). In the present embodiment, the first gas non-use state is a state in which the consumption amount of the fuel gas G in the combined heat and power unit 41 and the heat source unit B is equal to or less than the set determination amount four times continuously for 60 minutes. Is.

Then, if the situation where the first gas is not used continues for 26 days, it is determined that the stop execution condition is satisfied, and the power generation unit 40 is prohibited from starting the combined heat and power unit 41. Command (# 11). As a result, the power generation side control unit 92 of the power generation unit 40 executes the operation stop process for stopping the operation of the combined heat and power supply unit 41.
When the server device 4 determines in # 10 that the situation where the first gas is not used has not passed for 26 days, the server device 4 returns to the beginning of this flowchart.

Next, in # 12, when the server device 4 recognizes that the combined heat and power supply unit 41 has stopped, it starts timing the first set stop period (standby period of the present invention) T1 and the first set stop period (standby period). ) It is determined whether or not there was a second gas non-use state before the expiration of T1 (# 13, # 14). In the present embodiment, the second gas non-use state is a state in which the consumption amount of the fuel gas G in the combined heat and power unit 41 and the heat source unit B is equal to or less than the set determination amount twice continuously for 60 minutes. Is. Further, the server device 4 can recognize that the combined heat and power supply unit 41 has stopped, for example, when the consumption of fuel gas in the power generation unit 40 becomes zero. Alternatively, the server device 4 may be configured to receive information from the power generation unit 40 to the effect that the combined heat and power supply unit 41 has been stopped.

Then, the server device 4 determines that the start prohibition release condition is satisfied when it is determined that the second gas is not used before the first setting stop period (standby period) T1 expires. If it is determined that there was no second gas non-use state before the expiration of the first set stop period (standby period) T1 by transmitting the cancellation of the start prohibition to the power generation unit 40 (# 19), the gas is used. The transmission of the refraining message is transmitted to the power generation unit 40 (# 15). In this way, the server device 4 is the information (heat-power cogeneration unit 41, heat source unit B, and other gas consuming equipment 2) that is the basis for determining whether or not the fuel gas non-consumption state has occurred. (Consumption amount of fuel gas in the above) and information close to (consumption amount of fuel gas in the combined heat and power unit 41 and the heat source unit B) are used to determine whether or not the start prohibition release condition is satisfied. As a result, when the server device 4 determines that the start prohibition release condition is satisfied during the standby period and commands the restart of the operation of the combined heat and power supply unit 41, the microcomputer meter M is also in a fuel gas non-consumption state during the standby period. Is more likely to be determined as having occurred. Therefore, after the operation of the combined heat and power unit 41 is stopped when the stop execution condition is satisfied, the operation of the combined heat and power unit 41 can be restarted at an appropriate timing.

After that, in # 16, the server device 4 starts timing the second set stop period T2, and the first consumption received from the power generation unit 40 and the heat source unit 10 until the second set stop period T2 expires. Based on the amount information and the second consumption information, it is determined whether or not there is a third gas non-use state (# 17, # 18). In the present embodiment, in the third gas non-use state, the state in which the consumption amount of the fuel gas G in the heat and power combined unit 41 and the heat source unit B is equal to or less than the set determination amount has existed once for 60 minutes continuously. Is. Then, if it is determined that the third gas is not used before the second setting stop period T2 expires, the server device 4 determines that the start prohibition release condition is satisfied, and releases the start prohibition. However, if it is determined that there was no third gas non-use state before the expiration of the second set stop period T2 (# 19), the process returns to # 17.

<Second Embodiment>
The energy supply system of the second embodiment is different from the above embodiment in that the power generation unit 40 performs the leakage determination avoidance process. The energy supply system of the second embodiment will be described below, but the description of the same configuration as that of the above embodiment will be omitted.

FIG. 5 is a flowchart illustrating a leakage determination avoidance process performed by the power generation side control unit 92 of the power generation unit 40. The leak determination avoidance process shown in FIG. 5 includes a leak determination avoidance stop process for stopping the operation of the combined heat and power unit 41 until the start prohibition release condition is satisfied when the stop execution condition of the combined heat and power unit 41 is satisfied. It includes multiple processes, such as sending a message to refrain from using fuel gas.

In the present embodiment, the heat source unit 10 transmits the consumption information regarding the consumption amount of the fuel gas G in its own heat source unit B to the server device 4 at a predetermined timing. Then, the server device 4 transmits the consumption information regarding the consumption amount of the fuel gas G in the heat source unit B of the heat source unit 10 received from the heat source unit 10 to the power generation unit 40 at a predetermined timing. As a result, the power generation unit 40 can know the consumption amount of the fuel gas G in the heat source unit B of the heat source unit 10 in addition to the consumption amount of the fuel gas G in its own heat and power combined unit 41. Therefore, the power generation side control unit 92 can know the total consumption amount of the fuel gas G in the combined heat and power supply unit 41 and the heat source unit B to which the fuel gas G is supplied via the same microcomputer meter M.

First, the power generation side control unit 92 is in a first gas non-use state including a state in which the consumption amount of the fuel gas G in the combined heat and power unit 41 and the heat source unit B is equal to or less than the set determination amount for the set determination time or longer. It is determined whether or not the non-existent situation is continuous for a predetermined period (26 days) shorter than the leakage determination period (30 days) (# 30), and if 26 days have passed, it is determined that the stop execution condition is satisfied. Then, the start prohibition for prohibiting the start of the combined heat and power unit 41 is set (# 31), and then the operation stop process for stopping the operation of the combined heat and power unit 41 is executed (# 32).
When the power generation side control unit 92 determines in # 30 that 26 days have not passed, the power generation side control unit 92 returns to the beginning of this flowchart.

Next, in # 33, the power generation side control unit 92 starts timing the first set stop period (standby period) T1 and waits until the first set stop period (standby period) T1 expires. It is determined whether or not there is a gas-free state (# 34, # 35). Then, the power generation side control unit 92 determines that the start prohibition release condition is satisfied when it is determined that the second gas is not used before the first set stop period (standby period) T1 expires. If it is determined that there was no second gas non-use state before the first setting stop period (standby period) T1 expires after canceling the start prohibition (# 40), a message to refrain from using gas is sent by remote control. (# 36) is sent to the user by (not shown) or the like.

In this way, the power generation side control unit 92 provides information (heat and power combined unit 41, heat source unit B, and other gas consuming devices) that serve as a basis for the microcomputer meter M to determine whether or not a fuel gas non-consumption state has occurred. Using information close to (fuel gas consumption in 2) (fuel gas consumption in the combined heat and power unit 41 and the heat source B), it is determined whether or not the start prohibition release condition is satisfied. As a result, when the power generation side control unit 92 determines that the start prohibition release condition is satisfied during the standby period and restarts the operation of the combined heat and power supply unit 41, the microcomputer meter M also consumes no fuel gas during the standby period. The possibility of determining that a condition has occurred increases. Therefore, after the operation of the combined heat and power unit 41 is stopped when the stop execution condition is satisfied, the operation of the combined heat and power unit 41 can be restarted at an appropriate timing.

After that, in # 37, the power generation side control unit 92 starts timing the second set stop period T2, and determines whether or not there was a third gas non-use state until the second set stop period T2 expires. Judgment (# 38, # 39). Then, when the power generation side control unit 92 determines that the third gas is not used before the second setting stop period T2 expires, it determines that the start prohibition release condition is satisfied, and the start prohibition is prohibited. (# 40), and if it is determined that there was no third gas non-use state until the second setting stop period T2 expires, the process returns to # 37.

<Third Embodiment>
The energy supply system of the third embodiment is different from the above-described embodiment in the method of transmitting information from the heat source unit 10 to the power generation unit 40. The energy supply system of the third embodiment will be described below, but the description of the same configuration as that of the above embodiment will be omitted.

FIG. 6 is a diagram showing a configuration of an energy supply system according to a third embodiment. As shown in the figure, in the energy supply system of the third embodiment, the server device 4 communicates with the power generation unit 40 and the heat source unit 10 provided in each of the plurality of facilities 5 (5A, 5B). Information can be sent and received via. In such a case, the server device 4 determines which combination of the power generation unit 40 and the heat source unit 10 is installed in the same facility 5, that is, whether the fuel gas G is supplied from the same microcomputer meter M. It is necessary to determine.

In the energy supply system of the third embodiment, the server device 4 is provided to the combined heat and power unit 41 with respect to the combined heat and power unit 41 and the heat source unit B to which the fuel gas G is supplied via the same microcomputer meter M. The unique first identification information and the unique second identification information given to the heat source unit B are stored in association with each other. As shown in Table 1 below, the unique identification information is, for example, the serial number of the power generation unit 40 or the serial number of the heat source unit 10. Then, the server device 4 stores the information as shown in Table 1.

The heat source side control unit 25 of the heat source unit 10 transmits the consumption amount information regarding the consumption amount of the fuel gas G in its own heat source unit B to the server device 4 together with the serial number (second identification information) of the heat source unit 10. Then, the server device 4 refers to the information shown in Table 1 and associates the consumption amount information with which facility 5 is the consumption amount information in the heat source unit 10, that is, which power generation unit 40 is associated with. Can be identified.

Then, when the server device 4 performs the leakage determination avoidance process as shown in FIG. 4 of the first embodiment, the server device 4 has the first consumption information and the first consumption information from the plurality of power generation units 40 and the heat source unit 10. Even if the second consumption amount information is received, the fuel gas consumption amount in the combined heat and power supply unit 41 received together with the first identification information from the power generation unit 40 to which the fuel gas is supplied via the specific microcomputer meter M is related. 1 Consumption information and the second consumption information regarding the consumption of fuel gas in the heat source unit B received together with the second identification information from the specific heat source unit 10 to which the fuel gas is supplied via the same microcomputer meter M. Can be managed in association with. Then, the server device 4 determines whether or not the stop execution condition of the combined heat and power supply unit 41 is satisfied and the start prohibition release condition is determined based on the first consumption amount information and the second consumption amount information that are associated and managed. It is possible to determine whether or not the condition is satisfied.

Further, when the power generation side control unit 92 performs the leakage determination avoidance process as shown in FIG. 5 of the second embodiment, the server device 4 consumes fuel gas from the heat source unit 10 to the heat source unit B. Even if the second consumption information regarding the amount is received together with the second identification information, it is possible to specify to which power generation unit 40 the second consumption information should be transmitted.

<Another Embodiment>
<1>
In the above embodiment, the configuration of the energy supply system has been described with specific examples, but the configuration can be changed as appropriate.
For example, in the above embodiment, the ultrasonic type microcomputer meter M is illustrated, but the present invention can also be applied to the membrane type microcomputer meter M. In this case, the determination condition for the microcomputer meter M to determine that the fuel gas non-consumption state has occurred is, for example, a state in which the flow rate of the fuel gas G is equal to or less than the set determination amount (for example, 1.0 L / h). It is defined as a condition that is continuous for the setting determination time or longer (for example, 60 minutes or longer).
In addition, in the above embodiment, the configuration in which the hot water storage tank 90 is provided in the power generation unit 40 is described, but an energy supply system in which the hot water storage tank 90 is not provided or an energy in which the hot water storage tank 90 is provided separately from the power generation unit 40. The configuration of the energy supply system, such as the supply system, can be changed as appropriate.

<2>
In the above embodiment, the contents of the processing performed in the energy supply system have been described with specific numerical values, but these numerical values are described for the purpose of illustration and can be changed as appropriate.
For example, the leak determination period, the predetermined period, the waiting period, and the like have been described with specific numerical values, but these numerical values can be changed as appropriate.
In addition, the contents of the first gas non-use state, the second gas non-use state, and the third gas non-use state have also been described with specific numerical values, but these numerical values can be changed as appropriate.

In the above embodiment, an example in which the serial number is the unique identification information given to the combined heat and power unit 41 (power generation unit 40) and the heat source unit B (heat source unit 10) has been described, but other information is used as the identification information. May be. For example, the product numbers and MAC addresses of the combined heat and power supply unit 41 (power generation unit 40) and the heat source unit B (heat source unit 10) may be used as identification information.

<3>
The configurations disclosed in the above embodiment (including another embodiment) can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction, and the present specification. The embodiment disclosed in the above is an example, and the embodiment of the present invention is not limited to this, and can be appropriately modified without departing from the object of the present invention.

INDUSTRIAL APPLICABILITY The present invention can be used in an energy supply system capable of restarting the operation of the power generation unit at an appropriate timing after stopping the operation of the power generation unit when the stop execution condition is satisfied.

3 Communication line 4 Server device 10 Heat source unit 11 Hot water supply heating unit (heat source unit B)
12 Heating part for heating (heat source part B)
40 Power generation unit 41 Combined heat and power unit (Power generation unit A)
92 Power generation side control unit G Fuel gas

Claims (3)

A power generation unit having a power generation unit that generates power using fuel gas supplied via a microcomputer meter and a power generation side control unit that controls the operation of the power generation unit, and
A heat source unit having a heat source unit that generates heat using fuel gas supplied via the microcomputer meter and a heat source side control unit that controls the operation of the heat source unit is provided.
When the fuel gas non-consumption state that satisfies a predetermined judgment condition including the state where the flow rate of the fuel gas is equal to or less than the set judgment amount continues for the set judgment time or more does not occur during the leakage judgment period. An energy supply system that is configured to activate an alarm or cut off the supply of fuel gas.
A server device capable of transmitting and receiving information via a communication line between the power generation unit and the heat source unit is provided.
The server device provides unique first identification information given to the power generation unit and the heat source unit with respect to the power generation unit and the heat source unit to which fuel gas is supplied via the same microcomputer meter. It is stored in association with the unique second identification information that has been created.
The power generation side control unit transmits the first consumption information regarding the fuel gas consumption in the power generation unit to the server device together with the first identification information.
The heat source side control unit transmits the second consumption information regarding the consumption amount of fuel gas in the heat source unit to the server device together with the second identification information.
The server device
Before Symbol first consumption information, before SL and a second consumption amount information received via the communication line and stored,
When it is determined that the stop execution condition of the power generation unit is satisfied based on the first consumption amount information and the second consumption amount information, the operation of the power generation unit is stopped for the microcomputer meter until the start prohibition release condition is satisfied. It is configured to execute a stop process for avoiding leakage determination, which transmits a command to be transmitted to the power generation unit.
During a predetermined standby period after the power generation unit has stopped operation due to the leakage determination avoidance stop process, the amount of fuel gas consumed by the power generation unit and the heat source unit is equal to or less than the set determination amount. An energy supply system in which a predetermined gas non-use state including continuation for the set determination time or longer is set as a start prohibition release condition. A power generation unit having a power generation unit that generates power using fuel gas supplied via a microcomputer meter and a power generation side control unit that controls the operation of the power generation unit, and
A heat source unit having a heat source unit that generates heat using fuel gas supplied via the microcomputer meter and a heat source side control unit that controls the operation of the heat source unit is provided.
When the fuel gas non-consumption state that satisfies a predetermined judgment condition including the state where the flow rate of the fuel gas is equal to or less than the set judgment amount continues for the set judgment time or more does not occur during the leakage judgment period. An energy supply system that is configured to activate an alarm or cut off the supply of fuel gas.
A server device capable of transmitting and receiving information via a communication line between the power generation unit and the heat source unit is provided.
The server device provides unique first identification information given to the power generation unit and the heat source unit with respect to the power generation unit and the heat source unit to which fuel gas is supplied via the same microcomputer meter. It is stored in association with the unique second identification information that has been created.
The heat source side control unit transmits the second consumption information regarding the consumption amount of fuel gas in the heat source unit to the server device together with the second identification information.
The server device
Transmitting the second consumption information received via the communication line from the heat source unit to the power generating unit,
The power generation side control unit
When it is determined that the stop execution condition of the power generation unit is satisfied based on the first consumption information regarding the consumption amount of fuel gas in the power generation unit and the second consumption information received from the server device, the power generation unit It is configured to execute the stop processing for avoiding leakage judgment, which stops the operation of the engine until the start prohibition release condition is satisfied.
The determination was made based on the first consumption amount information and the second consumption amount information received from the server device during a predetermined standby period after the power generation unit stopped operation by the leakage determination avoidance stop process. The start prohibition release condition is that there is a predetermined gas non-use state including a state in which the amount of fuel gas consumed by the power generation unit and the heat source unit is equal to or less than the set determination amount for the setting determination time or longer. Energy supply system. The leak determination period is a situation in which there is no predetermined gas non-use state including a state in which the amount of fuel gas consumed by the power generation unit and the heat source unit is equal to or less than the set determination amount for the setting determination time or longer. The energy supply system according to claim 1 or 2 , wherein the stop execution condition is continuous for a shorter predetermined period.

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