TWI470905B - Power generation system - Google Patents

Description

Power system

The present invention relates to a power generation system including a load test device.

Since the past, there has been advocated a device in which the generator and the measuring device in the load test are integrated as in Patent Document 1. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2006-208130

[The subject to be solved by the invention]

However, it does not take into account the heat generated by the engine, generator, and load test equipment.

Accordingly, it is an object of the present invention to provide a power generation system that takes into account the processing of the heat generated. [Means for solving the problem]

The power generation system according to the present invention comprises: an engine having: an engine body; a heat sink, heat exchange of cooling water flowing inside the engine body; and a fan cooling the radiator; a generator that is to be obtained by the engine body The rotational force is converted into electric power; and the load test device includes a plurality of resistors for use in performing load test of the generator; and the resistor of the load test device is located above the heat sink and is located at The fan is in the air flow path downstream of the radiator.

The cooling of the load test device can also use a fan that cools the radiator of the engine, so that the configuration of the cooling member of the power generation system including the load test device can be simplified.

Moreover, the hot air after heat exchange in the radiator or the load test device is discharged upward, so that hot air is prevented from hitting the user.

It is preferred to further include a conduit having an inlet opposite the heat sink and an outlet opposite the resistor of the load testing device to change the horizontal airflow from the fan to an upward flow.

Preferably, the heat sink is disposed such that a surface of the heat sink having a center portion facing the fan is substantially parallel to a horizontal direction, and a resistor of the load test device is disposed on an upper portion of the heat sink.

By omitting the duct, the size in the horizontal direction can be reduced, and the configuration of the power generation system can be simplified.

Preferably, the heat sink is disposed in an inclined state, upstream of the center portion of the heat sink, downstream of the center portion of the heat sink.

And further comprising a housing covering the engine, the generator, and at least an upper surface and a side surface of the load testing device, the housing comprising: an upper surface window on the upper surface and the load testing device The resistor is open to the opposite position; and the side window portion is open at a position opposite to the side of the engine and at least one of the generators.

The external air can be introduced from the upper surface window or the side window, so that the temperature around the engine or the generator can be suppressed from rising.

Since the engine, the generator, and the load test device are housed in one frame (housing), it is possible to combine the minimum size (size or capacity) required for the performance of the generator and the optimum engine or load test device.

The engine, the generator, and the load test device are housed in one frame (housing). Therefore, by controlling the controller, the engine or the generator can be automatically driven, and the load test device can perform the load test, and the result can be displayed. Or send it to an external device or control the load test from an external device. It can also easily prevent tampering of the load test.

And the housing includes an actuator that opens the upper surface window and the side window when the load test is performed.

And further comprising a temperature sensor, wherein the temperature sensor measures the temperature around the engine or the generator, and when the load test is performed, the measurement is performed according to the measurement result measured by the temperature sensor The device adjusts an opening degree of at least one of the upper surface window portion and the side window portion.

And the engine preferably includes an exhaust gas pipe that exhausts exhaust gas discharged from the engine body from the upper portion of the casing to the outside.

The exhaust gas of the engine body may also be discharged from the upper surface window.

And the capacity of the load test device is preferably 30% or more and 70% or less relative to the rated output of the generator.

It can be combined into a minimum load test device for load testing with a predetermined ratio (30% to 70%) of the rated output of the generator. [Effects of the Invention]

As described above, according to the present invention, it is possible to provide a power generation system in consideration of the heat generated.

Hereinafter, the present embodiment will be described using a diagram. The power generation system 1 according to the first embodiment includes an engine 10, a generator 20, a duct 30, a load test device 40, a power storage device 50, a control unit 61, an operation unit 62, a measuring unit 63, a temperature sensor 64, and a display. The unit 65, the communication unit 66, and the casing 70 (see Figs. 1 and 2).

In the perspective view of FIG. 1, the device such as the generator 20 housed inside the casing 70 is indicated by a broken line. However, the control unit 61, the measuring unit 63, the temperature sensor 64, and the communication unit 66 are not shown.

The engine 10 is a device that generates a rotational force according to the explosive force of a gas or the like, and applies the rotational force to the generator 20, and includes an engine body 11, a radiator 13 that performs heat exchange of cooling water flowing inside the engine body 11, and cooling. The fan 15 of the radiator 13 and the exhaust gas pipe 17.

In the cylinder body or cylinder head around the combustion chamber of the engine body 11, a water jacket is provided, and the cooling water is led to the water jacket, thereby suppressing heating by the combustion engine body 11. The cooling water heated by the water jacket is cooled by the air supplied from the fan 15 when flowing through the radiator 13 (the center portion of the radiator). The cooling water circulates inside the water jacket or the radiator 13 by a water pump (not shown).

The fan 15 is a device that transmits cooling air to the radiator 13 and may be driven according to a rotational force generated by the engine body 11, or may be driven by an electric motor (not shown).

In the present embodiment, the fan 15 is used for cooling the resistor of the load test device 40 provided downstream of the heat sink 13 in addition to the cooling radiator 13.

The heat sink 13 is disposed on a side portion of the engine body 11, so that the surface of the heat sink center portion facing the fan 15 is substantially perpendicular to the horizontal direction. The fan 15 is disposed laterally and disposed between the engine body 11 and the radiator 13 to blow air toward the center portion of the radiator of the radiator 13.

The exhaust gas pipe 17 is a guide passage that discharges exhaust gas discharged from the engine body 11 from the upper portion of the casing 70 to the outside, and extends in an opening portion (upper surface window portion 71) provided at an upper portion of the casing 70.

The generator 20 is a device (power generation device) that converts the rotational force obtained by the engine body 11 into electric power, and supplies electric power generated by the power generation to an electric appliance connected to the outside of the generator 20 or to the electric storage device 50.

When the load test is performed, the generator 20 is electrically connected to the load test device 40 to electrically disconnect the external electrical device.

The duct 30 has a slightly L-shaped flow path in a side view, and guides the lateral air supply from the fan 15 to the guide passage in the upward direction, and the inlet faces the radiator center portion of the radiator 13, and the outlet and load test The resistors of device 40 are opposite.

In the load tester 40, a plurality of resistor groups connected in series in a horizontally parallel bar-shaped resistor are arranged in series at a predetermined interval, and are arranged in one vertical direction or more in the vertical direction for use in load test of the generator 20. .

In the present embodiment, the resistor of the load testing device 40 is located above the radiator 13 and is a flow path for the air from the fan 15, and is disposed downstream of the radiator 13.

The capacity of the load testing device 40 is at least 30% or more, preferably less than 70%, relative to the rated output of the generator 20. For example, when the rated output of the generator 20 is 100 kVA, the load testing device 40 preferably has a capacity of 30 to 70 kW.

Power storage device 50 includes power storage unit 51 and AC/DC converter 53. The power storage unit 51 is connected to the generator 20 via an AC/DC converter 53, a battery or a capacitor or the like stored in the power obtained by the generator 20, and the stored power is connected to each of the power generation system 1 or to the outside of the power storage device 50. Electrical appliances are supplied.

Further, the power storage device 50 may be connected to an AC power source (not shown) and used as a power source. The solar panel 80 may be disposed on the upper surface of the casing 70 to obtain power from the solar panel 80. The power storage device 50 is stored (see the second embodiment and FIG. 3).

The control unit 61 is a control device that controls the operation of each unit of the power generation system 1 (the operation control of the engine 10 or the generator 20, the control of each unit of the load test device 40, and the power storage control of the power storage device 50).

When the load test is performed, the control unit 61 electrically controls the switching between the resistor of the load test device 40 and the generator 20 to drive the engine body 11 or the fan 15. Further, until the temperature of the cooling water is higher than a predetermined temperature, the cooling water preferably circulates inside the engine body without passing through the radiator 13.

When the load test is performed, the fan 15 is used not only for the cooling radiator 13 but also for the resistor of the cooling load testing device 40. Therefore, when the motor speed can be controlled by an electric motor, the engine should be driven more than the load test. 10 or generator 20 when the output (larger speed) is driven.

However, the cooling water passing through the central portion of the radiator of the radiator 13 is no higher than 80 ° C before and after, and is lower than the temperature of the resistor of the load test device 40 (about 200 ° C), so even if the output control of the fan 15 is not performed, The resistor of the load test device 40 can be cooled by the air after the heat exchange of the heat sink 13.

When the load test is performed, the control unit 61 drives the first actuator 72 of the upper surface window portion 71 of the casing 70 and the second actuator 74 of the side window portion 73 to make the upper surface window portion 71 for exhaust. The opening is for opening the side window portion 73 for suction.

The operation unit 62 is used for the switching operation of the engine 10 or the generator 20, or the switching operation of the load test of the generator 20 of the load testing device 40, or the time setting of the load test.

The measuring unit 63 is connected to the generator 20, and measures the number of times the load test of the generator 20 using the load test device 40 is performed. In the load test, a predetermined load amount is applied to the generator 20 (for example, the rated output of the generator 20). 30%), whereby the measured load amount actually applied to the generator 20, and the time during which the measured load amount is equal to or greater than the predetermined load amount. The measurement result is displayed on the display unit 65. The measurement result may be transmitted to an external device via the communication unit 66 or recorded in a recording unit (not shown).

The temperature sensor 64 measures the ambient temperature of the engine 10 or the generator 20 when performing load test, and outputs it to the control unit 61. The control unit 61 drives the first surface of the upper surface window portion 71 of the casing 70 when the ambient temperature is higher than a critical value (for example, a temperature (40° C. or the like) at the time of the corresponding load test determined by law such as the fire protection method). The actuator 72 and the second actuator 74 of the side window portion 73 increase the degree of opening of the upper surface window portion 71 or the degree of opening of the side window portion 73, or increase the output (rotation speed) of the fan 15, and lower the ambient temperature. Even if the ambient temperature is not below the critical value, the control unit 61 stops the load test and displays a warning on the display unit 65.

Further, another temperature sensor (not shown) may be disposed in the vicinity of the load test device 40, even if the ambient temperature of the load test device 40 is cooled by the fan 15, and is not lower than a certain value (for example, 200 ° C). The control unit 61 stops the load test and displays a warning on the display unit 65.

The display unit 65 displays the operating state of the engine 10, the generator 20, and the load testing device 40, in particular, the measurement result measured by the measuring unit 63, or the engine 10 or the generator 20 measured by the temperature sensor 64. The surrounding temperature and other information about the load test.

The communication unit 66 transmits a signal for receiving a signal to a device external to the power generation system 1 (for example, a computer used to manage the power generation system 1) via a network, and transmits information about a load test of the power generator 20 to an external device. Or receive information about the switch operation of the load test or the time setting of the load test from an external device.

The casing 70 is a casing that covers the components (at least the upper surface and the side surface) of the power generation system 1 such as the load test device 40, and the operation portion 62 or the display portion 65 is provided on the side surface.

Further, in the casing 70, on the upper surface, an upper surface window portion 71 is provided on the upper portion of the load test device 40, and the upper surface window portion 71 is opened and closed by the first actuator 72.

When the cooling air passes through the load test device 40 via the duct 30, in order to facilitate the passage of the cooling air (the resistor of the load test device 40 does not easily hinder the passage of the cooling air), the flow path in the duct 30 or the upper surface window of the casing 70 The opening of the 71 is preferably wider than the area in which the resistors of the load test device 40 are arranged.

Further, in the casing 70, a side window portion 73 is provided on the side surface of the engine body 11, the fan 15 or the generator 20, and the side window portion 73 is opened and closed by the second actuator 74.

The degree of opening of the upper surface window portion 71 or the side window portion 73 during the load test can be adjusted according to the ambient temperature of the engine 10 or the generator 20.

Further, an opening and closing door (not shown) is provided on the back surface of the casing 70 (on one side of the power storage device 50 or the generator 20), and the power storage device 50 or the power generator 20 and the external electric appliance are provided via the opening and closing door. connection.

In the first embodiment and the second embodiment, since the cooling of the load testing device 40 can also use the fan 15 of the radiator 13 of the cooling engine 10, the configuration of the cooling member of the power generation system 1 including the load testing device 40 can be simplified.

Further, the hot air after heat exchange in the radiator 13 or the load test device 40 is discharged upward from the upper surface window portion 71 of the casing 70, so that hot air can be prevented from hitting the user.

The exhaust gas of the engine body 11 can also be discharged from the upper surface window portion 71.

Further, since the outside air can be introduced from the upper surface window portion 71 or the side window portion 73, the temperature rise around the engine 10 or the generator 20 can be suppressed.

Further, the engine 10, the generator 20, and the load test device 40 are housed in one frame (housing 70), so that the minimum size (size or capacity) required for the performance of the generator 20 can be combined and the engine 10 is optimal. Or load test device 40. In particular, the load test device 40 can be combined to a minimum required for load testing at a predetermined ratio (30% to 70%) of the rated output of the generator 20.

Since the engine 10, the generator 20, and the load test device 40 are housed in one casing (the casing 70), the control unit 61 can also be used to control the engine 10 or the generator 20 to load test. The device 40 performs a load test, displays the result on the display unit 65, or transmits it to the external device via the communication unit 66, or controls the load test from an external device. It can also easily prevent tampering of the load test.

In the first embodiment and the second embodiment, the use of the duct 30 to change the lateral cooling air to the upward direction and to cool the radiator 13 and the load test device 40 located above the radiator 13 has been described. The fan 15 is disposed under the radiator 13, and the load test device 40 is placed directly above the radiator 13, and the form of the duct 30 is omitted (see the third embodiment and FIG. 4).

By omitting the duct 30, the size of the casing 70 in the horizontal direction can be reduced, and the configuration of the power generation system 1 can be simplified.

At this time, although the heat sink 13 is disposed, the surface of the heat sink center and the fan 15 are substantially parallel to the horizontal direction, but it is preferable that the heat sink 13 is inclined, and the upstream of the heat sink center portion is disposed higher than the downstream, and is cooled. Water easily flows from the upstream to the downstream (see the fourth embodiment and Fig. 5).

1. . . Power system

10. . . engine

11. . . Engine body

13. . . heat sink

15. . . fan

17. . . Exhaust gas pipe

20. . . generator

30. . . catheter

40. . . Load test device

50. . . Power storage device

51. . . Power storage department

53. . . AC/DC inverter

61. . . Control department

62. . . Operation department

63. . . Measurement department

64. . . Temperature sensor

65. . . Display department

66. . . Communication department

70. . . case

71. . . Upper surface window

72. . . 1st actuator

73. . . Side window

74. . . 2nd actuator

80. . . Solar panel

Fig. 1 is a perspective view showing the configuration of a power generation system (with a duct) according to the first embodiment. Fig. 2 is a schematic view showing the configuration of a power generation system according to the first embodiment. Fig. 3 is a schematic view showing the configuration of a power generation system (with a duct and a solar panel) according to the second embodiment. Fig. 4 is a schematic view showing the configuration of a power generation system (without a duct) according to the third embodiment. Fig. 5 is a view showing the configuration of a power generation system (without a duct and a radiator tilt) according to the fourth embodiment.

1. . . Power system

10. . . engine

11. . . Engine body

13. . . heat sink

15. . . fan

17. . . Exhaust gas pipe

20. . . generator

30. . . catheter

40. . . Load test device

50. . . Power storage device

51. . . Power storage department

53. . . AC/DC inverter

61. . . Control department

62. . . Operation department

63. . . Measurement department

64. . . Temperature sensor

65. . . Display department

66. . . Communication department

70. . . case

71. . . Upper surface window

72. . . 1st actuator

Claims (9)

A power generation system comprising: an engine having: an engine body; a radiator for exchanging cooling water flowing through an interior of the engine body; and a fan for cooling the radiator; a generator that is to be obtained by the engine body The rotational force is converted into electric power; and the load test device includes a plurality of resistors for use in performing load test of the generator; and the resistor of the load test device is located above the heat sink and is located at The fan is in the air flow path downstream of the radiator. The power generation system of claim 1, further comprising a conduit having an inlet opposite the heat sink and an outlet opposite the resistor of the load test device, the horizontal direction of the air from the fan The air flow is changed to the air flow in the upward direction. The power generation system of claim 1, wherein the heat sink is disposed such that a surface of the heat sink having a center opposite to the fan is substantially parallel to a horizontal direction, and a resistor of the load test device is disposed on an upper portion of the heat sink. Device. The power generation system of claim 3, wherein the heat sink is disposed in an inclined state, upstream of the center portion of the heat sink, higher than a downstream portion of the heat sink center portion. The power generation system of claim 1, further comprising a casing covering the engine, the generator, and at least an upper surface and a side surface of the load testing device, the casing comprising: an upper surface window Opening on the upper surface and facing the resistor of the load testing device; and the side window portion opening on the side opposite to the side of the engine and at least one of the generators. A power generation system according to claim 5, wherein the housing includes an actuator that opens the upper surface window portion and the side window portion when the load test is performed. The power generation system of claim 6 , further comprising a temperature sensor, wherein the temperature sensor measures the temperature of the engine or the surrounding of the generator, and when the load test is performed, according to the temperature sensing As a result of the measurement of the device measurement, the actuator adjusts the degree of opening of at least one of the upper surface window portion and the side window portion. A power generation system according to claim 5, wherein the engine includes an exhaust gas pipe that discharges exhaust gas discharged from the engine body to the outside from the upper portion of the casing. For example, in the power generation system of claim 1, wherein the capacity of the load test device is 30% or more and 70% or less with respect to the rated output of the generator.