JPH0578119U - Power system simulator - Google Patents

Abstract

(57) [Summary] [Purpose] When monitoring the power system such as a private cogeneration system, it is possible to monitor the power flow and design,
To provide a power system simulation device that is easy to manufacture. [Structure] A plurality of indicator lamps 11 arranged on the simulated bus bar 10 arranged on the monitoring surface 4 are arranged along the simulated bus bar 10.
a to 11e are integrated together, and each indicator light 11a to
A sequence controller 16 that sequentially lights 11e in the power flow direction of the power system in the power flow direction is provided so that the power flow direction can be displayed on the simulated bus line 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power system simulator for monitoring a power system.

[0002]

[Prior Art]

 In recent years, in electric power facilities such as buildings and factories, in addition to the purchase of electricity supplied by electric utilities, new types of distributed power sources such as cogeneration generators, fuel cells, and solar cells are used to purchase electricity. A so-called private cogeneration system that supplies electric power to the load in cooperation with

FIG. 8 shows an example of this system, in which the power purchase 1 and the cogeneration power generator 2 are connected via disconnecting switches DS1 and DS2 and circuit breakers CB1 and CB2, respectively. The load is branched and distributed to each load via the circuit breaker CB3. Normally, the power from the generator 2 is supplied to each load as indicated by the solid arrow, and at this time, the power shortage occurred. In this case or when the generator 2 is stopped, the electric power from the power purchase 1 is supplied to the load as indicated by the one-dot chain line arrow.

By the way, in the above-mentioned power supply facility, when monitoring the power system, a monitoring control panel 3 as shown in FIG. 9 is installed, and a power system simulating device is formed on the monitoring surface 4. There is.

As shown in FIG. 10, in this simulation device, a strip plate-shaped simulated bus bar 5 made of acrylic resin or metal is arranged on a monitoring surface 4 along a power system, and a disconnector for the monitoring surface 4 is provided. Install green and red indicator lights 6 and 7 that indicate the on / off status at positions corresponding to DS1, DS2 and circuit breakers CB1, CB2 and CB3, and display whether or not the actual power system is in the live line status. The colors of the lights 6 and 7 can be distinguished. Alternatively, as shown in FIG. 11, after arranging a simulated bus bar 8 along the electric power system on the monitoring surface 4, a plurality of indicator lamps 9 arranged along the simulated bus bar 8 are connected to the simulated bus bar 8 and monitored. The surface 4 is attached so as to penetrate, and the live state is displayed by simultaneous lighting of the indicator lamp 9.

[0006]

[Problems to be solved by the device]

 In the above-mentioned conventional simulation device, it is possible to monitor the status of the disconnector and circuit breaker and determine the ON / OFF state of the system by turning on / off the indicator lights 6, 7, 9; If the load is light when the generator 2 and the electric power purchase 1 are supplying power to the load in FIG. 8, the surplus power is generated as indicated by the broken line arrow. There is a case where the power flows from the machine 2 to the side of the power purchase 1 to carry out a reverse power flow to the electric power company, but there is a drawback that such a power flow direction cannot be monitored. Also, conventionally, the monitoring buses 4 are provided with the simulated bus bars 5 and 8, and separately from this, the indicator lights 6, 7 and 9 are individually mounted near the simulated bus bars 5 and 8 or on the simulated bus bar 8. Therefore, there is a drawback that labor is required for designing and manufacturing.

The present invention has been made in view of the above problems of the conventional technology, and an object of the present invention is to design an electric power system that can be easily designed and manufactured and can monitor a power flow. It is to provide a simulation device.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the power system simulating device of the present invention, a plurality of indicator lamps arranged along the simulated bus bar are integrally incorporated into the simulated bus bar arranged on the monitoring surface, and A drive circuit is provided for sequentially lighting the indicator lights in the power flow direction when the power system is live.

[0009]

[Action]

 In the above-mentioned configuration, since a plurality of indicator lamps are integrally incorporated in the simulated bus bar, by disposing this simulated bus bar on the monitoring surface, a plurality of indicator lamps can be arranged along the power system. It becomes possible to arrange them, and it becomes easy to design, manufacture and assemble. Further, since the plurality of indicator lights arranged on the simulated bus are sequentially turned on by the drive circuit in the power flow direction, the power flow direction can be determined by observing the lighting flow of the indicator lights.

[0010]

【Example】

 An example will be described with reference to FIGS. 1 to 7. First, FIGS. 1 to 6 showing the first embodiment will be described. As shown in FIG. 1, a strip-shaped simulated bus bar 10 is attached to the monitoring surface 4 of the monitor control panel for monitoring the power system along the power system. The simulated bus bar 10 is composed of, for example, a translucent acrylic resin plate, and when the acrylic resin is molded, the first to fifth five indicator lamps 11a to 11e arranged in the longitudinal direction of the simulated bus bar 10 are provided. The indicator lamps 11a to 11e are integrally molded on the simulated bus bar 10 with their heads embedded in resin.

As shown in FIG. 6, each of the indicator lamps 11 a to 11 e has a light emitting diode or the like in a case formed of a support cylinder 12 having a bottomed cylindrical shape and a hemispherical lens portion 13 colored in red, for example. When the simulated bus bar 10 is attached to the monitoring surface 4, each of the indicator lights 11a to 11e integrally incorporated in the simulated bus bar 10 is led out rearward from the rectangular long hole 15 of the monitoring surface 4. To be done.

Lighting of each of the indicator lights 11a to 11e is controlled by a sequence controller 16 as a drive circuit as shown in FIG. The sequence controller 16 is provided with first to fifth five output contacts 17a to 17e corresponding to the respective indicator lights 11a to 11e, and one terminal of each of the indicator lights 11a to 11e is connected to each of the output contacts 17a to 17e. The power source 18 is connected to one end of the lamp 17e, and is connected between the other terminal of each of the indicator lights 11a to 11e and the other end of each of the output contacts 17a to 17e.

The sequence controller 16 repeats this operation by sequentially turning on the output contacts 17a to 17e from one direction and the other direction in the arrangement order, and continuously turning on or off the output contacts 17a to 17e all at once. Sequence and each output contact 17a to 17e have a sequence to turn on / off all at once and at a constant cycle, and switch these sequences according to the detection result from the means for detecting the state of the power system to execute the control. It is like this.

That is, when power is supplied to the load from the power purchase 1 and the generator 2 in a live state of the power system, the output contacts 17a to 17e are sequentially turned on in this order as shown in FIG. As a result, the lighting positions of the respective indicator lights 11a to 11e of the simulated bus bar 10 flow sequentially from top to bottom.

Further, when the power from the generator 2 flows to the power purchase 1, as shown in FIG. 4, the output contacts 17a to 17e are connected to the simulated bus bar 10 corresponding to the system in which the reverse power flow occurs. Is sequentially turned on in the opposite direction to this arrangement, and the indicator lights 11a to 11e of the simulated bus bar 10 are sequentially turned on from bottom to top. On the other hand, when the power system is in a no-voltage state, the output contacts 17a to 17e are turned off or turned on all at once, and the indicator lamps 11a to 11e of the simulated bus bar 10 are turned off or turned on all at once.

Further, when an abnormality occurs in the electric power system, as shown in FIG. 5, control for turning on / off the output contacts 17a to 17e all at once in a constant cycle is executed, and the indicator lamps 11a to 11a of the simulated bus bar 10 to. 11e flashes all at once. Therefore, in the above-mentioned simulated bus bar 10, since the indicator lights 11a to 11e integrally incorporated in the simulated bus bar 10 are sequentially turned on in the power flow direction in a live state of the power system, the indicator lights 11a to 11e By confirming the flow direction of the lighting position of 11e, it becomes possible to monitor the power flow direction, and when a reverse power flow occurs, this can be reliably determined.

Moreover, since the respective indicator lights 11a to 11e are drive-controlled by the sequence controller 16 according to the state of the electric power system, not only the power flow monitoring described above but also the no-voltage state and the abnormal system state can be easily discriminated. The grid can be monitored in more detail.

Next, FIG. 7 showing the second embodiment will be described. In this embodiment, the indicator lights 11a to 11e arranged in the longitudinal direction are embedded and integrally incorporated in a simulated bus bar 19 made of acrylic resin attached to the monitoring surface 4, and one of the indicator lights 11a to 11e is installed. The terminal group 20 connected to the terminals and the common terminal 21 connected to the other terminal of each of the indicator lights 11a to 11e are led out from the lower rear surface of the simulated bus bar 19.

[0019]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. Since a plurality of indicator lights arranged on the simulated bus are sequentially lit in the power flow direction in the live state of the power system, not only conventional condition monitoring but also power flow monitoring can be performed at the same time. It is possible to reliably identify the reverse flow of electric power to the electric utility side that occurs in the electric power system such as the cogeneration system, and because it has an integrated structure that incorporates multiple indicator lights into the simulated busbar. In addition to being easy to design and manufacture, it is easy to handle when mounting on a monitoring surface.

[Brief description of drawings]

1 shows a first embodiment of a power system simulating device according to the present invention, (A) is a front view and (B) is a cut side view.

FIG. 2 is a connection diagram of the indicator lamp of the first embodiment.

FIG. 3 is a timing chart of the output contact when the power flow direction is positive.

FIG. 4 is a timing chart of output contacts when a reverse flow of electric power occurs.

FIG. 5 is a timing chart of output contacts when a system abnormality occurs.

FIG. 6 is a side view of the indicator lamp.

FIG. 7 is a cut side view showing a second embodiment of the present invention.

FIG. 8 is a single-line connection diagram of a general private cogeneration system.

FIG. 9 is a perspective view of a monitoring control board.

FIG. 10 shows a conventional example, (A) is a front view, and (B) is a cut side view.

11A and 11B show another conventional example, in which FIG. 11A is a front view and FIG.
FIG.

[Explanation of symbols]

 4 Monitoring Surface 10 Simulated Bus Bars 11a to 11e Indicator Light 16 Sequence Controller 19 Simulated Bus Bar

Claims (1)

[Scope of utility model registration request] 1. A power system simulation device in which a simulated bus bar is arranged along the power system on a monitoring surface of the power system, wherein a plurality of indicator lights arranged along the simulated bus line are integrated with the simulated bus bar. And a drive circuit for incorporating the above-mentioned indicator lights into the electric power system in a live state of the electric power system so as to sequentially turn on the electric power system.