JP2018180858A - Operation control system of installation equipment for use in emergency - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation control system capable of preventing overlapping of starting loads when automatically starting installation equipment with an emergency power system, and of efficiently starting the installation equipment without a delay.SOLUTION: An operation control system 1 of the present invention for automatically activating prescribed equipment by an emergency power system in the event of total power outage of a power system in a facility, comprises: a power failure detection unit 11 for detecting a power outage of a power system; a DEG 12 acting as a power source for the emergency power system; a load equipment group 13 composed of a plurality of pieces of equipment to be activated in emergencies; and a controller 14 composed of a control device for activating the equipment of the load equipment group 13. The controller 14 determines in advance the sequence in which the pieces of equipment constituting the load equipment group 13 are to be activated, and executes a starting operation for each equipment according to the sequence. When the prescribed equipment does not start even after a prescribed time elapses, the starting operation for the equipment is stopped, and a starting operation for the next equipment in the sequence is executed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an operation control system for facility equipment in an emergency, and more specifically, for example, even when a distribution facility at each location fails due to an earthquake or the like, the main equipment in the facility is efficiently The present invention relates to an operation control system that can be powered and started.

  In various facilities such as factory facilities and electrical control facilities, there has been proposed a control system of facility equipment which automatically starts up the facility equipment when a power failure occurs in the operation continuation state and then the power is restored.

  For example, Patent Document 1 proposes an operation control system for transportation equipment such as an elevator and equipment such as an air conditioning equipment. However, this technology is an automatic control system at the time of power recovery of the power system normally used at normal times, and there is no description about power recovery in the “emergency” power system, and all power systems are blacked out due to earthquakes etc. In such a case, there is a problem that the normally used power system has to wait until the power recovery.

  In recent years, in various production plants, many production facilities have been installed from the viewpoint of improvement of production capacity and production efficiency. For example, taking a copper smelting plant as an example, equipments such as a self-burning furnace, a converter, a boiler attached to a refining furnace, various circulating pumps, a cooling tower, etc. are installed to maintain the productivity of the plant. .

  In such a production factory, generally, an emergency power generator such as a diesel engine generator (DEG) is provided in preparation for a total power failure of the power system. When the power system is completely shut down due to an earthquake or the like, an emergency line switching board (hereinafter also referred to as "engine line switching board") detects the blackout state, and a power generation device such as a DEG automatically starts up. Then, when the voltage of the DEG is established, power is transmitted to a plurality of equipment devices (load equipment devices) to be activated for emergency response, and the equipment devices are activated.

  At this time, in order to avoid the possibility that the load of start-up on the installation devices is duplicated and the DEG trips, the start-up order is determined for each of the installation devices so as to start up sequentially from the installation devices with large startup capacity.

  However, in the factory equipment, for example, when the number of equipment devices to be manually started increases, there is a possibility that duplication of starting load and increase of initial load occur. Furthermore, when an earthquake or the like occurs, in addition to the response on operation, the operation of the manual activation may be delayed due to the confusion of workers.

  Furthermore, when multiple DEGs are operated synchronously and power is transmitted to a single emergency power system, if one DEG fails, the generation capacity of the normally operating DEG is not exceeded. As a result, the normally operating DEG may also trip. In addition, when the emergency power generation system is a single system, if a distribution equipment such as a high voltage cable breaks down due to an earthquake or the like, there is a risk that all the lower systems from the point of the accident will be blacked out.

JP 2001-337702 A

  The present invention has been proposed in view of such a situation, and an emergency power system is provided for automatically starting up the equipment by the emergency power system when the power system in the facility such as a factory facility completely fails. It is an object of the present invention to provide an operation control system which can prevent the start load from being duplicated and can efficiently start the equipment to be started without delay.

  As a result of intensive investigations, the inventor has determined in advance the order of activation in the equipment (equipment equipment) in the equipment, and executes the activation operation for each equipment according to the order, and a predetermined time has elapsed. Also, when the predetermined equipment does not start up, it is found that the above-mentioned problem can be solved by stopping the starting operation to the equipment and executing the starting operation for the equipment in the next order. We came to complete the invention.

  (1) A first invention of the present invention is an operation control system for automatically starting a predetermined facility by an emergency power system when the power system in the facility completely fails, and A load equipment group including a blackout detection unit that detects a blackout, a diesel engine generator (DEG) that is a power source of an emergency power system, and a plurality of equipment that is activated in response to an emergency; And a control unit configured by a control device for activating the device, wherein the control unit determines in advance the activation order of the devices constituting the load equipment device group, and the activation for each device in accordance with the order. An operation control system that executes an operation and stops a start operation on the device when the predetermined device does not start even after a predetermined time has elapsed, and executes the start operation on the device in the next order It is.

  (2) The second invention of the present invention is the operation control system according to the first invention, further comprising a start time measuring unit that measures a time until a predetermined device constituting the load equipment group starts. is there.

  (3) A third invention of the present invention is the operation control system according to the first or second invention, wherein a plurality of said DEGs are provided and a plurality of series of emergency power systems are provided.

  (4) The fourth invention of the present invention is the operation control system according to the third invention, further comprising a transmission system connectable to each other on the upper side of the plurality of emergency power supply systems of the plurality of series.

  (5) The fifth invention of the present invention is the operation control system according to the third invention, further including a transmission system connectable to each other on the lower side of said plurality of emergency power supply systems.

  According to the present invention, it is possible to prevent duplication of the startup load by the emergency power system when automatically starting the facility equipment by the emergency power system when the power system in the facility such as the factory facility completely fails. The equipment to be activated can be efficiently activated without delay.

It is a block diagram showing composition of an operation control system. It is a flowchart which shows the flow of control by an operation control system when the electric power system for normal use cuts off completely. It is a figure which shows the structure of the operation control system which concerns on other embodiment, and is a figure which shows the aspect of the structure which is provided with multiple DEG and has multiple series emergency power system.

  Hereinafter, an embodiment of the present invention (hereinafter, referred to as “the present embodiment”) will be described in detail. In addition, this invention is not limited to the following embodiment, A various change is possible in the range which does not change the summary of this invention.

<< 1. Configuration of operation control system >>
The operation control system according to the present embodiment is an operation control system that automatically starts a predetermined facility device by an emergency power system when the power system of a facility such as a factory facility completely fails. In general, plant facilities and the like are provided with a power system (normal power system) used for normal operation and an emergency power system activated when the normal power system fails.

  Various facilities and equipment are provided in facilities such as factory facilities. For example, in the facilities of a copper smelting factory, a self-burning furnace, a converter, a boiler attached to a refining furnace, various circulation pumps, cooling towers, etc. The equipment of the These facility devices are devices that are activated by the supply of power by the power system, and are also referred to as load facility devices for power.

  Here, among the above-described load equipment devices, there are equipment devices that should be preferentially activated in an emergency such as, for example, when the power system for normal use has a complete power failure due to an earthquake or the like. The operation control system according to the present embodiment is a system for efficiently and automatically starting up the load equipment in the facility by the emergency power system when the normal power system fails.

  FIG. 1 is a block diagram showing the configuration of the operation control system according to the present embodiment. As shown in FIG. 1, the operation control system 1 includes a plurality of power activation in a facility by a power failure detection unit 11 that detects a power failure, a diesel engine generator (DEG) 12 that is a power supply of an emergency power system, And a control unit 14 configured of a control device for activating the equipment in the load equipment group 13.

  In addition, the operation control system 1 is further provided with a start time measurement unit 15 that measures the time until the start is performed based on the operation start operation by the control unit 14 in a predetermined facility device in the load facility device group 13. In the example shown in FIG. 1, the operation control system 1 shows an aspect in which the control unit 14 and the activation time measurement unit 15 are provided as separate components, but the control unit 14 performs the operation activation operation by itself. It may have such a function as to measure the time until starting based on it, and even such an embodiment is substantially the same as the present embodiment, and shall be included in the scope of the present invention. .

[Blackout detection unit]
The power failure detection unit 11 detects that the power system in the facility has a power failure. The power failure detection unit 11 is electrically connected to a DEG 12 described later and the control unit 14, and outputs a power failure detection signal to the DEG 12 and the control unit 14 when it detects that the power system in the facility has a power failure.

[DEG]
A diesel engine generator (DEG) 12 is a power supply of an emergency power system. When the normal power system fails due to the earthquake etc., the emergency power system is activated. The DEG 12 is a power supply device of the emergency power system, and operates based on a power failure detection signal from the power failure detection unit 11 electrically connected.

[Load equipment group]
The load equipment group 13 is a group of a plurality of power load equipment that are activated by electric power and provided in the equipment. In FIG. 1, “device 1”, “device 2”,... And “device n” (n is an integer of 2 or more) respectively indicate equipments constituting the load equipment group 13. Each piece of equipment is electrically connected to a control unit 14 described later, and upon receiving an operation start command from the control unit 14, sequentially starts its operation. When each equipment starts operation start, it transmits a start completion signal to the control unit 14 and reports that the operation start is completed.

  Here, the order of activation of each piece of equipment constituting the load equipment group 13 is determined in advance by the emergency power system. For example, when generated gas or liquid remains in piping in a plant facility, equipment equipment such as a circulation pump or a blower for discharging the residue is preferentially started from the viewpoint of enhancing safety. It will be necessary. As described above, in the load equipment group 13, the order to start activation in an emergency such as a power failure is determined in advance, and in the case of automatic activation by the emergency power system, the equipment equipment start sequence is executed according to the order. .

[Control unit]
The control unit 14 controls activation of the facility devices that constitute the load facility device group 13. The control unit 14 is configured of a device (control device) that starts up the equipment and outputs and transmits an operation start command to each of the equipment. In addition, the detail about starting control of the installation apparatus which comprises the load installation apparatus group 13 is explained in full detail later.

[Startup time measurement unit]
The start time measuring unit 15 measures the time from when the operation start operation by the control unit 14 is started on a predetermined equipment of the load equipment group 13 to when the equipment is started. In addition, the control unit 14 determines the predetermined facility based on the measurement time by the startup time measurement unit 15 and the start completion signal from the predetermined facility apparatus (for example, the apparatus 1 in FIG. 1) that has received the operation start command. The presence or absence of the activation of the device is confirmed, and the sequential activation of the equipment constituting the load equipment group 13 is controlled. As described above, the activation time measurement unit 15 may be incorporated in the control unit 14 to have the same configuration, and the control unit 14 may measure the time until activation.

<< 2. Start control by operation control system >>
Next, start control of the equipment by the operation control system 1, that is, a method of start control of the equipment by the operation control system 1 using the emergency power system when the normal power system fails.

  FIG. 2 is a flow chart showing the flow of control by the operation control system 1 when the normal power system fails. In the operation control system 1, the control unit 14 constantly monitors the presence / absence of information (blackout detection signal) of blackout detection by the blackout detection unit 11, and enters a blackout sequence when a blackout is detected. A start command is sequentially output to the equipments constituting the group 13 to start them. The equipments constituting the load equipment group 13 are assumed to start activation in the order of "equipment 2", "equipment 3", ... "equipment n" from "equipment 1" in FIG. .

  First, when the power failure sequence is entered, the control unit 14 executes confirmation (ON confirmation) of the presence / absence of the power failure detection signal from the power failure detection unit 11 (step SP1) and confirms reception of the power failure detection signal (YES), It transfers to step SP2. At this time, the power failure detection unit 11 also transmits a power failure detection signal to the DEG 12. Upon receiving the power failure detection signal from the power failure detection unit 11, the DEG 12 starts the operation of the emergency power system and transmits a voltage establishment signal to the control unit 14.

  Next, in step SP2, the control unit 14 performs an output disconnection process of disconnecting the output of the operation command for the installation device that does not require activation among the installation devices constituting the load installation device group 13 prior to the power recovery. . As a result, it is possible to prevent the power capacity from becoming tight due to the activation of the equipment that does not need to be activated.

  Next, in step SP3, the control unit 14 performs confirmation (ON confirmation) of the presence or absence of the voltage establishment signal from the DEG 12 and confirms reception of the voltage establishment signal (YES), and then proceeds to step SP4. On the other hand, when the reception of the voltage establishment signal from the DEG 12 is not confirmed, the confirmation operation is repeated.

  Next, in step SP4, the control unit 14 starts an automatic start management timer by the start time measuring unit 15, and starts counting time until the start of the installation device.

  Next, in step SP5, the control unit 14 starts the count-up of the automatic start management timer by the start time measuring unit 15.

  Next, in step SP6, the control unit 14 confirms whether or not the power transmission system up to the facility device (device 1) to be started is charged. For example, cable breakage may occur due to an earthquake or the like, and the transmission system may not be charged. Therefore, it is confirmed whether or not the power transmission system to the facility device is charged, and if not charged (NO), the automatic start exclusion flag is turned ON and the start failure message is turned ON in step SP7. In this state, the automatic startup sequence of the facility device (device 1) is interrupted, and the transition is made to the automatic startup sequence of the facility device (device 2) in the next startup order. By doing this, it is possible to effectively prevent the delay of activation of other equipment.

  On the other hand, when it is confirmed that the power transmission system is charged (YES in step SP6), the process proceeds to step SP8. In step SP8, the control unit 14 confirms whether or not the operating condition of the load equipment (device 1) to be started is satisfied. The operating conditions include, for example, operating conditions such as temperature conditions and pressure conditions.

  If it is determined in step SP8 that the operating condition of the facility device is not satisfied (NO), the process proceeds to step SP9. In step SP9, the control unit 14 turns on the automatic activation standby flag and starts the standby time management timer, and stands by until the operation condition of activation of the facility device is satisfied. Then, if the operation condition for activation is not satisfied even if the standby time set arbitrarily passes, the process proceeds to step SP11, and the automatic activation standby flag is turned OFF and the standby time management timer is stopped. Then, it shifts to the automatic startup sequence of the facility equipment (device 2) of the next startup order.

  If it is determined in step SP8 that the operating condition of the facility device is satisfied (YES), the process proceeds to step SP10. In step SP10, the control unit 14 checks the loadable capacity from the DEG 12 for supplying power to the facility device, and determines whether or not the facility device can be started from the load capacity.

  If it is determined in step SP10 that the capacity of the DEG is not sufficient (NO), the process proceeds to step SP9, and the control unit 14 turns on the automatic activation standby flag and starts the standby time management timer. Wait until the loadable capacity becomes satisfactory. Then, if the loadable capacity is not sufficient even after the standby time set arbitrarily, the process proceeds to step SP11, the automatic start standby flag is turned OFF, and the standby time management timer is stopped. , Shift to the automatic startup sequence of the facility device (device 2) of the next startup order.

  If it is determined in step SP10 that the capacity of the DEG 12 is sufficient (YES), the process proceeds to step SP12. In step SP12, the control unit 14 outputs an operation command to the facility device (device 1) for which the operation condition is satisfied (load operation signal ON).

  Next, in step SP13, the control unit 14 confirms load activation of the facility device that has output the operation command. Then, if the load activation is not confirmed even if the time set arbitrarily has passed (NO), the control unit 14 proceeds to step SP14, and if the load activation is confirmed (YES), the controller 14 proceeds to step SP15.

  In step SP14, the automatic start failure flag is set to ON and the start failure message is set to ON in response to the load start of the equipment not confirmed even if the time set arbitrarily has passed, and the next start order Shift to the automatic startup sequence of the equipment device (device 2).

  In step SP15, an automatic start success flag is set to ON in response to confirmation of load start of the facility device.

  Next, in step SP16, the control unit 14 confirms whether or not activation of all the equipments constituting the load equipment group 13 has ended (confirmation of termination of all load activation step). When the activation of "equipment 1" which is the equipment in Fig. 1 is completed, the automatic activation sequence of "equipment 2", "equipment 3",... And auto start will start. That is, the flow of “NO” as a result of the confirmation in step SP16 is the transition flow to the next activation order sequence.

  Then, if it is determined in step SP16 that all of the equipment devices constituting the load equipment device group 13 have been started (YES), the power failure sequence completion message is turned ON, and the automatic control sequence is stopped.

  As described above, according to the operation control system 1 according to the present embodiment, the start loads of the installation devices in the factory are started in stages so that the start loads do not overlap, and duplication of start loads is prevented. it can. Therefore, it is possible to prevent problems such as a trip of the DEG, and efficiently start automatically without intervention by the operator. Also, if the predetermined equipment does not start normally even if the time set arbitrarily has elapsed due to failure of the power transmission equipment or failure of the start condition, the automatic start sequence of that equipment is interrupted, and the next start order By shifting to the start-up sequence of the equipment of the above, the equipment can be started without delay.

<< 3. Operation control system with multiple series of emergency power system >>
FIG. 3 is a diagram showing the configuration of an operation control system according to another embodiment. As shown in FIG. 3, the operation control system 2 according to another embodiment is provided with two DEGs, and has an aspect having two series of emergency power systems. The code of the first DEG is "21", and the code of the second DEG is "22".

  In addition, the operation control system 2 includes a first circuit breaker 23 connecting the two series of emergency power systems to each other on the upper side where the first DEG 21 and the second DEG 22 are located, and a second line of emergency on the lower side. And a second circuit breaker 24 for connecting the power systems to each other.

  In the operation control system 2, when the facility equipment is activated by the emergency power system from the DEG during an emergency such as an earthquake, the first circuit breaker 23 and the second circuit breaker 24 are normally open. Each of the first DEG 21 and the second DEG 22 is configured to transmit power to one series of emergency power grids. That is, power is supplied to the load equipment group 31, 32 by the emergency power system from the first DEG 21, and to the load equipment group 33, 34 by the emergency power system from the second DEG 22. Power is supplied.

  On the other hand, by providing the first circuit breaker 23 connecting the two series of emergency power systems to each other on the upper side, any one of the first DEG 21 and the second DEG 22 breaks down and becomes inoperable. Even in the case, it is possible to appropriately supply power to equipment.

  That is, when one DEG (for example, the first DEG 21) fails, the power load to the facility is limited at a predetermined rate, and then the first breaker 23 is turned on to set up two series of emergency power systems. Make it connect. Thereby, not only the load equipment group 33, 34 activated by the power transmission from the second DEG 22 but also activation of the load equipment groups 31, 32 occur due to the power supply from the second DEG 22 not broken down. It can be done.

  In addition, even if trouble such as disconnection occurs in the high voltage cable that constitutes the regular circuit, the equipment can be properly installed by providing the second circuit breaker 24 that mutually connects the two series of emergency power systems on the lower side. Power transmission can be continued.

  That is, for example, when the high-voltage cable for the service line breaks at a point indicated by X in FIG. 3, the disconnector 25 is opened and the load for the service line is limited, and then the second circuit breaker 24 is closed and By connecting the series of emergency power grids, it is possible to disconnect the failed range and transmit power to both grids.

  During power transmission by DEG, as described above, although both the first circuit breaker 23 and the second circuit breaker 24 are normally in the open state, the first circuit breaker 23 or the second circuit breaker is erroneously operated. When 24 is turned on, the first DEG 21 and the second DEG 22 may trip. Therefore, it is desirable to provide an interlock that prevents circuit breaker closing due to an erroneous operation.

  As described above, when a plurality of DEGs are provided, the emergency power supply system is divided into a plurality of series, and a system not requiring synchronous operation of the DEGs is provided. Furthermore, when a failure of one DEG is detected by using a transmission system provided with a circuit breaker (circuit breaker 23) capable of connecting a plurality of systems on the upper side of the emergency power system, the load restriction at each site is It is possible to transmit power to all the grids by connecting them with a healthy grid after it is done.

  In addition, by using a transmission system in which circuit breakers (circuit breakers 24) capable of connecting multiple systems can be provided on the lower side of the emergency power system, when power distribution facilities at each location have failed due to an earthquake or the like, By connecting and opening the system according to the failure point, the power outage coverage can be minimized.

1, 2 Operation control system 11 Blackout detection unit 12 Diesel engine generator (DEG)
13, 31, 32, 33, 33 Load equipment group 14 Control unit 15 Start-up time measurement unit 21 First DEG
22 Second DEG
23 first circuit breaker 24 second circuit breaker 25 disconnector

Claims (5)

An operation control system for automatically starting a predetermined facility device by an emergency power system when the power system in the facility completely fails.
A power failure detection unit that detects a power failure in the power system in the facility;
A diesel engine generator (DEG), which is the power source of the emergency power system,
Load equipment group consisting of multiple devices to be activated for emergency response,
A control unit configured of a control device that activates the devices of the load equipment device group;
Equipped with
The control unit
The order in which the devices constituting the load equipment group are activated is determined in advance, and the activation operation for each device is executed in accordance with the order.
The operation control system which stops the start operation to the device and executes the start operation to the next device when the predetermined device does not start even after the predetermined time has elapsed. The operation control system according to claim 1, further comprising: a start time measuring unit configured to measure a time until a predetermined device constituting the load equipment group starts. The operation control system according to claim 1 or 2, wherein a plurality of said DEGs are provided, and a plurality of emergency power systems of a plurality of series are provided. The operation control system according to claim 3, further comprising: a transmission system to which each of the plurality of emergency power supply systems can be connected. The operation control system according to claim 3, further comprising: a transmission system to which each of the plurality of series of emergency power supply systems can be connected.

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