JPH1014136A - Power supply system operation controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To judge faulty place quickly and besides, enable even an operator with little experience to perform quick tackling and disposal, by outputting support guidance corresponding to the faulty section specified by a faulty section specifying means. SOLUTION: A power supply system operation controller 1 is equipped with fault detecting means 10(10A-10E), a logical condition setting means 25 which adds and changes logical conditions 21A and 21B, and a support guidance means 30 which outputs support guidance corresponding to the specified faulty section to a CRT 31 or a printer 32. Then, a fault detection signal is judged, being applied to each logical condition, and the applicable trip place is defined, and the information is sent to a support guidance means 30. The support guidance means 30 turns on and off the specified trip place section in red. Moreover, the support guidance being set corresponding to each trip place is indicated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation management device for detecting a failure in a power supply system and instructing a response.

[0002]

2. Description of the Related Art Conventionally, in power (power) systems for various devices and facilities in factories, refineries, chemical plants, and the like, protection relays are provided at various points in the system in order to cope with failure of the power system. If a part of the power system fails and the protection relay is activated, the operator checks the position of the activated protection relay by turning on the indicator lamp of the operation management device, and based on the lighting, the location of the fault. To determine the extent of the impact and take appropriate measures and actions.

[0003] By the way, the frequency of failure of the power system is low,
Because it is difficult to judge from the operator's experience the fault location, the affected range, and the appropriate action / response from the lighting of the indicator lamp,
Usually, the operator checked the manual and made these judgments and responses.

[0004]

However, there is a possibility that even if the user responds by confirming it with a manual or the like, he cannot respond quickly because he has little experience of failure. Also, in many cases, for a certain failure, multiple protection relays operate to generate a large number of alarms, so it is extremely difficult to identify the failure location in a short time even with reference to the manual. . Power system failures affect the entire equipment and facilities and have a large range of influence.Therefore, it is necessary to make quick decisions and corrective measures especially for failures. However, there has been a demand for an operation management device that can respond quickly.

On the other hand, there are cases in which electric power companies handling large electric power systems develop and operate diagnostic systems using expert systems and neural networks. These diagnostic systems are developed, constructed, and verified. However, there has been a problem that a large amount of labor is required and the cost is large.

It is an object of the present invention to provide a power supply system operation management device which can quickly determine a failure location and can promptly respond and take measures even for an inexperienced operator.

[0007]

The power supply system operation management device according to the present invention is provided with failure detection means for detecting failures at various points in the power supply system, and is set in advance based on the operation status of each of these failure detection means. And a support guidance means for outputting support guidance corresponding to the failure part identified by the failure part identification means. It is.

In the present invention, when a failure occurs in the power supply system, failure detection means (protection relay, N
FB (No Fuse Breaker, switch), fuses, voltage,
The failure is detected by a current measuring device or the like. When the operation status (operation signal) of each failure detection unit is input to the failure site identification unit, the failure site identification unit inputs the operation status to a preset logical condition to quickly identify the failure site. Then, when the failure site is specified, the support guidance means provides support guidance corresponding to the failure site (display of the failure site, range affected by the failure, necessary confirmation items (operation state, etc.), necessary measures and operations, etc.). Is output to a display device such as a CRT or a printer. Therefore, the operator responds based on the support guidance displayed on the display device or the like,
It is only necessary to take measures, and there is no need to search for or judge the response manually or the like, so that even inexperienced operators can respond promptly and reliably.

Here, it is preferable that the power supply system operation management device includes a logical condition setting means for setting a logical condition of the failure site specifying means. If such a logical condition setting unit is provided, the logical condition set in the failure site specifying unit can be easily added or changed,
The operator can also set a new logical condition based on the experience of the failure, and the failure site can be more reliably and accurately specified.

[0010] The support guidance means displays the specified faulty part on the screen of the display device of the operation management device, and indicates the faulty part displayed on the screen with a fingertip or the like and displays the support guidance on the screen of the display device. Is preferably displayed. Here, if the display device is of a touch panel type, the indication of the failure site can be made by touching the failure site displayed by blinking display or the like with a finger. If it is other than a touch panel, an instruction may be given by moving a pointer displayed on the screen with a mouse or the like, or may be given by keyboard input. In this way, the support guidance can be displayed by instructing the display portion of the failure part, so that the operability can be improved and the response can be made promptly.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of a power supply system operation management device according to one embodiment of the present invention will be described below. FIG. 1 shows a power supply system operation management device 1 of the present embodiment. The power supply system operation management device 1 receives failure detection means 10 (10A to 10E) provided at various places in a power (power supply) system such as an electric room or a substation, and operation signals of the failure detection means 10 are input. A fault location specifying means 20 having various logical conditions 21A and 21B for specifying a fault location, a logic condition setting means 25 for adding and changing the logical conditions 21A and 21B of the fault location specifying means 20, and a fault location specifying means 20 And a support guidance unit 30 that outputs support guidance corresponding to the failed part specified by the above to the CRT 31 and the printer 32. Note that the failure site identification means 20 and the support guidance means 30 are constructed by, for example, a distributed control system (DCS) or a computer in a refinery or a factory, and the result is obtained by using a terminal used for monitoring and operation in normal operation. It is displayed on the CRT 31 and the printer 32.

The CRT 31 normally displays a power system (power supply system) 40 shown in FIG. The power system 40 of the present embodiment is a power system (C system) for instrumentation control related to power equipment in a refinery.
In each of the C-system feeders 41 and 42 for power No. 1 and No. 2,
In-house 400V board 43, In-house 200V, 100V board 44,
DC power supply panel 45, DC distribution panel 46, 2KVA CVCF
(Uninterruptible power supply) 47, a self-powered control center 48, a switching panel 49 for the low-voltage A system of power No. 1 and No. 2, an input switching panel 50, a 75V KVA CVCF 51, and the like.

The failure detecting means 10 includes a low voltage detection relay operated by a voltage drop, a protection relay operated by an overcurrent, a short circuit, a ground fault, and the like, a motor and an NFB (No Fuse Breeder).
aker: a device that outputs a trip (failure) signal when a failure occurs in the switch.
0.

For example, the AC circuit breaker 5 of the C-system feeder board 41
Although not shown in FIG. 2, between the 2L-3 and the NFBs 1, 3, and 4, a low-voltage detection relay that detects a failure of “400V power failure” is provided. In addition, C system feeder 4
1 generally includes three systems of AC circuit breakers 52L-1, 52L-.
2, 52L-3 are provided, and three low voltage detection relays are also provided. In this embodiment, even if any one of the low voltage detection relays operates, the failure detection of "400V power failure" is performed. Like that. The following Table 1 shows an example of each of the failure detection means and a part of the failure detection signal generated by the detection by the failure detection means.

[0015]

[Table 1]

A signal or the like for notifying the failure detection from each of the failure detection means 10 as described above is input to each of the logical conditions 21A and 21B of the failure location specifying means 20, as shown in FIG.
Is determined. These logical conditions 21A and 21B are inputted and changed by the logical condition setting means 25. Figures 3 and 4
FIG. 2 illustrates a part of the logical conditions set in the present embodiment.

In FIGS. 3 and 4, a warning alarm indicates a failure detection signal from the activated failure detection means 10, and if "AND" is entered, all of the described failure detections are indicated. Indicates that a logical condition has been set that applies only to the case where a signal (alarm) is input.
Note that the external ANN means a failure detection signal (alarm display) detected by a failure detection unit disposed outside the distributed control system (DCS) provided with the failure site identification unit 20.

"ANN No" corresponds to a failure occurrence location (in FIG. 2,...). The trip location is the location specified by the above logical conditions, that is, each of FIG.
,... Indicate the parts where the numbers are written.

For example, as shown in the first stage of FIG. 3, “power failure in the office”, “400 V power failure”, “power No. 1 major failure”, “self-powered C / C control power failure”, “DC power failure” When all failure detection signals of “panel input power failure” and “EG-P4 MHI ANN (condensate pump stop alarm)” are input, failure occurs in power supply board “52L-3” of power No. 1C system. Identified as having.

The fault detection signal input in this way is applied to each logical condition of the alarm alarm column shown in FIGS. 3 and 4 for determination. When a corresponding trip location is specified, the information is sent to the support guidance means 30. Sent. The support guidance means 30 blinks the trip location specified in the power supply system 40 of FIG. 2 in red.

The operator operates the power supply system 4 of the CRT 31.
When the finger touches the blinking portion of 0 with a finger, as shown in FIG.
The screen of the RT 31 is switched to display the support guidance 60 set corresponding to each trip location in FIGS. The contents of the displayed support guidance 60 include a display of a failure part, a range affected by the failure, items to be confirmed (operation state and the like), necessary measures and operations, and the like. Therefore, the operator only needs to take measures based on the contents of the support guidance 60 displayed on the CRT 31.

According to this embodiment, when a fault occurs in the power supply system 40 and each alarm is issued, the fault site is automatically specified by the fault site specifying means 20, and further the support guidance means is provided. The support guidance 60 indicating the failure part and the coping method by the
Since it is displayed at T31, the operator only has to take measures based on the guidance 60 displayed on the CRT 31. Therefore, even when the failure experience is small or the operator has little experience, a quick and accurate response can be taken to the failure, and the influence of the failure can be minimized.

The logical conditions 21A and 21B for specifying the faulty part can be easily input and changed by using the logical condition setting means 25, so that various logical conditions 21A and 21B are set on the site side. This makes it possible to further improve the accuracy of specifying a failed part, and to construct a system simply and at low cost as compared with a case where a failure diagnosis system is constructed by an expert system or the like. For this reason, the power supply system operation management device 1 of the present invention can be installed in a small-scale power supply system in a factory, a refinery, a chemical plant, or the like.

Further, the failed portion specified by the failed portion specifying means 20 is displayed in red on the power supply system 40 displayed on the CRT 31 by flashing in red, and when the operator touches the flashing portion with a finger, the support guidance 60 is displayed. Since the information is displayed on the CRT 31, an easy-to-use system having an excellent user interface can be provided, and even an inexperienced operator can easily operate the system.

The present invention is not limited to the above-described embodiments, and various improvements and design changes can be made without departing from the spirit of the present invention. For example, the logical condition 21 provided in the fault location specifying means 20
As A and 21B, AND such as each logical condition in FIG.
Not only the condition and the condition provided with only one condition shown in FIG. 4, but also an OR condition for specifying a failed part when even one of a plurality of failure detection signals is input, IF-THEN-condition, etc. Those having various logical operations can be set.

The power supply system operation management device of the present invention is not limited to the power supply system 40 shown in FIG. 2, but may be installed in various power supply systems such as factories, refineries, and chemical plants. it can. At this time, the failure site identification means 2
The logical condition set to 0 may be appropriately set according to the configuration of the power supply system in which the power supply system operation management device is installed. Further, the power supply system operation management device is not limited to the case where it is configured by an existing distributed control system (DCS) or a computer, and may be provided as an independent dedicated device.

[0027]

According to the power supply system operation management device of the present invention, a failure point in the power supply system can be quickly determined, and even an inexperienced operator can take a quick response and take a corrective action. The effect can be minimized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a power supply system operation management device according to an embodiment of the present invention.

FIG. 2 shows a CR of the power supply system operation management device of the present embodiment.
It is a figure showing the power supply system displayed on T.

FIG. 3 is a diagram illustrating an example of a logical condition set in a failure site specifying unit according to the embodiment;

FIG. 4 is a diagram illustrating an example of a logical condition set in a failure site specifying unit according to the embodiment;

FIG. 5 shows a CR of the power supply system operation management device of the present embodiment.
It is a figure showing support guidance displayed on T.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 power supply system operation management device 10 failure detection means 20 failure location specifying means 21A, 21B logical condition 30 support guidance means 31 CRT 32 printer 40 power supply system 60 support guidance

Claims (3)

[Claims] 1. A failure detection means provided at each part of a power supply system to detect a failure at each part of the power supply system, and a failure part is specified based on a logical condition set in advance from an operation state of each failure detection means. A power supply system operation management device, comprising: a failure site identification unit; and support guidance unit that outputs support guidance corresponding to the failure site identified by the failure site identification unit. 2. The power supply system operation management device according to claim 1, further comprising: a logical condition setting unit configured to set a logical condition of the failure site identification unit. 3. The power supply system operation management device according to claim 1 or 2, wherein the support guidance unit displays the failure site identified by the failure site identification unit on a screen of a display device of the operation management device. A power supply system operation management device which displays a support guidance on a screen of a display device when the trouble site displayed on the screen is indicated, while displaying the failure site.