JPH05308712A - Relay set-value setter and protective relay device - Google Patents

Abstract

PURPOSE:To decide whether or not a numeric value input by an operator is kept within a tolerance simply by displaying the tolerance of a set value and newly inputted set value on a display screen. CONSTITUTION:A set-value changing screen 71 displays the tolerance of set value for every set value. When the minimum value of a tolerance is sixty and the maximum value is one hundred and ten, digit frames 74a, 74b, 74c are displayed in a setting display area 74 because the number of digits is three. The numbers, which can be set, of each digit of a tolerance setting are indicated successively in an input number display area (IA) 75 at every digit. The numbers taken in an uppermost digit are 0 and 1 at that time. When 0 is selected as the uppermost digit, the digit frames 74b, 74c are displayed. The number 6-9, which can be set, of No. 2 digit are displayed in the IA 75, and the number is displayed in the digit frame 74b when 7 is selected. The numbers 0-9, which can be set, of No. 3 digit are indicated in the IA 75, and the number is displayed in the digit frame 74c when 5 is selected. Whether or not newly set value satisfy the tolerance is decided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay set value setting device for a digital protection relay.

[0002]

2. Description of the Related Art As a relay settling value setting device for a digital type protection relay, there have been heretofore known electrical cooperation researches, Vol.
No. pp. 131-133 are known. According to this, the relay settling value setting device includes an indicator, an element selection switch, a settling start switch, a settling value setting switch, a memory write switch, a settling completion switch, and an element display light emitting diode ( LED)
Consists of. Then, the settling value is changed in the order of settling start, relay element selection, settling value input, writing, and settling completion. When selecting a relay element, the operator is notified by displaying the settling value input format on the display. The new settling value is set in the internal memory at the time of writing, and used for the protection relay after the settling is completed.

[0003]

However, in the above-mentioned conventional method, if there is a settling value defect due to an erroneous input by the operator, the settling value must be set in the internal memory unless
Unable to perform setpoint check. Therefore, when a setting value setting error is detected, the setting value setting input operation must be performed again.

Further, although the rationality check for verifying the magnitude relation of the settling values of a plurality of relay elements is carried out after the settling is completed, even if the rationality is unsatisfactory, the resetting input work is required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a relay set value setting device for a digital protection relay that allows an operator to set a set value without causing an erroneous input.

[0006]

In order to achieve the above object, a relay settling value setting device of the present invention comprises an input means for inputting a settling value of a protection relay and information necessary for setting the settling value, and a settling value setting. And a display unit having a display screen, wherein the setting processing unit has an allowable range of the settling value of the setting target input from the input unit and the settling value input. And are displayed on the screen of the display means.

In this case, a settling value display area having a digit frame corresponding to the number of digits in the settling value allowable range is displayed on the screen, and the settling value input to the settling value display area is displayed. Preferably.

Numerical values that can be set for each digit from the most significant digit to the least significant digit of the settling value based on the allowable range are sequentially displayed for each digit in the input numerical value display area of the screen.
When sequentially displaying the numerical values for each digit, after displaying the numerical values sequentially input from the upper digit in the digit frame of the set value display area, the next digit determined by the relationship between the upper digit and the allowable range It is preferable that the settable numerical value is obtained and displayed in the input numerical value display area.

Further, when the input of the settling value is completed, it is judged whether or not the input settling value satisfies the above-mentioned allowable range, and if not, the fact is displayed on the screen. It is preferable to provide a function.

Further, it is judged whether or not the relationship between the input settling value and another relay settling value satisfies a predetermined rule, and if not, the fact is displayed on the screen. It is preferable to provide a rationality judgment function.

In the above-mentioned relay set value setting device, the set value numerical input means is of a type in which the numerical value displayed in the input numerical value display area is selected and input by a cursor, a touch panel, a tablet, a light pen or the like. It is preferably formed.

[0012]

With this structure, the above object can be achieved by the following operation according to the present invention.

First, since the allowable range of the set value to be set and the set value to be input are displayed on the screen, the operator can easily judge whether or not the numerical value input by the operator is within the allowable range. .. Therefore, an erroneous input can be found immediately and can be re-input immediately, which shortens the work for setting the settling value.

Further, by displaying the number of digits in the allowable range in the set value display area in a digit frame, erroneous input can be further prevented.

Further, according to the one in which only the settable numerical value is displayed on the screen as the settable numerical value for each digit of the settling value, the work of inputting the settling value is further facilitated,
And it is more effective in preventing erroneous input.

Further, a function for judging a failure of a settling value that has been set,
Further, according to the one provided with the rationality judgment function, the reliability is improved.

Further, if the numerical value input means for the set value is such that the numerical value displayed in the input numerical value display area is selectively input by a cursor, a touch panel or the like, erroneous input can be further prevented.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in FIGS. FIG. 1 shows a processing procedure of a setting processing unit which is a main part of a settling value setting device according to an embodiment of the present invention. FIG. 2 shows an overall configuration diagram of a protection relay device to which the present invention is applied. FIG. 3 shows a block diagram of a settling value setting device according to an embodiment of the present invention. Figure 4
[Fig. 3] shows an external view of the protection relay device. 4 to 8 are
An example of each display content is shown. FIG. 9 is a flowchart showing a display processing procedure of the settling value input switch displayed in the allowable numerical value display area.

As shown in FIG. 2, the protection relay device removes noise and the like from the data representing the system state such as the voltage and current of the input power system by the filter 1, and the sampling holder 2 at a constant cycle. To sample.
This sampled system data is the multiplexer 3
The analog / digital (A / D) converter 4
Entered in. The system data digitally converted by the A / D converter 4 is taken into the central processing unit (BPU) 5 via the internal bus 9. The BPU 5 obtains a criterion amount (physical amount) that is a criterion for determining the presence / absence of an accident based on the imported system data, and compares the obtained determination amount with a settling value stored in the memory 6 to determine the presence / absence of an accident. To judge. When it is determined that there is an accident, the relay output is output via the digital output unit (DO) 7. As a result, a trip command is output to a circuit breaker in the accident system via an electromagnetic relay (not shown), and a healthy system is protected. Further, contact information indicating the open / closed state of the circuit breaker is input from the digital input unit (DI) 8. In such a protection relay device, the set value must be set according to the application place of the protection relay. In addition, even if it is set once, it is required to change the setting corresponding to the change in the accident determination standard due to the change in the system configuration. Therefore, the settling device 10 is connected to the internal bus 9 in order to variably set the settling value.

As shown in FIG. 3, the settling value setting device 10 of this embodiment has an input section 11, a setting processing section 12, and a display section 1.
3, a relay data table 14, a display screen format table 15, and a duplicated set value memory A1.
7 and B18. From the input unit 11, the settling value of the protection relay and the information necessary for setting the settling value are input to the settling value setting processing unit 12. The relay data table 14 defines the type of relay to be set, the type of settling value for each relay, the allowable range of each settling value, and the like. The setting processing unit 12 performs processing related to settling value setting as will be described later according to the procedure shown in FIG. 1, and the screen of the display unit 13 including a liquid crystal display device, a CRT display device, or the like corresponds to the display screen format table 15. Various displays are performed according to the format.

The overall appearance of the protective relay device is as shown in FIG. The protection relay device is wholly housed in a self-standing cubicle, and includes a power supply unit 41, the filter 1, a sample holder 2, a multiplexer 3, an A / D converter 4 input device 42, a digital protection relay body 43,
It is composed of a digital input / output device 44, an auxiliary relay device 45, and a test terminal device 46. The input device 42 is configured to include the filter 1 of FIG. The digital protection relay main body 43 is configured to include the sample holder 2, the multiplexer 3, the A / D conversion unit 4, the BPU 5, the memory 6, and the settling value setting device 10 of FIG. The digital input / output device 44 includes DO 7 and DI 8 of FIG. Also, on the surface of the digital protection relay body 43,
A screen 47 of the display unit 13 shown in FIG. 3 is arranged,
Touch panel 4 that forms input unit 11 on the front surface of the screen
8 are provided.

The detailed configuration of the embodiment thus configured will be described below along with the operation according to the processing procedure of FIG.

Upon receiving the operation start command, the setting processing section 11 displays the menu screen 51 shown in FIG. 5 on the screen of the display section 13. The settling value setting device 10 has other functions (fault display,
Since it is also used for status display, etc., other functions are displayed on the menu screen of FIG.

(Step 101) On the menu screen 51,
Touch panel 4 in area 52 displaying "Relay setting"
When a finger is touched on 8, the relay settling menu is selected and the settling value display screen 61 shown in FIG. 6 is displayed. In the display, as shown in FIG. 6, an area 62 in which the name of the protection relay and the “settling value type” relating to the relay are displayed, and an area in which the “current settling value” corresponding to the setting value type is displayed. 63,
An area 64 in which "settling start" is displayed, an area 65 in which "menu screen return" is displayed, and the like are included.

(Step 102) Set value display screen 61
Then, touching the touch panel 48 in the area 64 with a finger selects “start settling”, and the settling value change screen 71 shown in FIG. 7 is displayed. In the display, as shown in FIG. 7, areas 72 and 73 in which “minimum value” and “maximum value” are displayed, which represent the allowable range of the settling value corresponding to each settling value type, and Settling value display area 74 where "new settling value" is displayed
And the input numerical value display area 75 that displays the numerical values that can be set
In addition, an area 76 in which “write” for instructing to write the set new set value in the memories 17 and 18 is displayed and an area 77 in which an “operation start” instruction is displayed are included.

(Step 103) Setting value change screen 71
Then, when touching the touch panel 48 at a position corresponding to one “setting value type” in the area 62, one touch is applied to one relay.
One settling value setting process is selected, and the settling value type
Instead of the reverse display, the selected settling value type can be easily recognized.

Further, a digit frame corresponding to the number of digits in the allowable range of the selected settling value is displayed in the settling value display area 74 (FIG. 8). Also, the decimal point and the unit are displayed as necessary together with the digit frame. For example, it is assumed that the minimum value of the settling value allowable range is 60 and the maximum value is 110. In this case, since the number of digits is three, first, three digit frames 74a, 74b, 74c are displayed in the set value display area 74 (FIG. 8).
(A)). Numerical values are input sequentially from the most significant digit, and the input waiting digit frame 74a is displayed differently from the other digit frames 74b and 74c.

(Steps 104 to 107) Here, only the numerical values that can be set for each digit from the highest digit to the lower digit of the settling value based on the allowable range of the settling value are set in the input numerical value display area 75 of the screen. Perform verification of the set value range for displaying digit by digit. In the case of the above example, it is verified that the numerical values of the most significant digit are "0" and "1" (step 104).

Therefore, only "0" and "1" are displayed in the input numerical value display area 75 (step 105, FIG. 8).
(A)). As described above, it is impossible to input a numerical value other than "0" and "1" in the most significant digit.

On the other hand, when the operator touches the touch panel 48 in the area where the numerical value "0" is displayed, "0" is selected as the set value of the most significant digit, and the set value display area 7 is displayed.
The display of No. 4 changes to FIG. 8B (step 106).

Then, the process proceeds to step 107, where it is judged whether or not the numeric input of all the digits is completed. If not, the process returns to step 104 to repeat the above process. In the case of the above example, in step 104,
The second digit numerical range is tested. In this case, since the most significant digit is set to "0", the numerical value that can be set as the second digit is "6 to 9". Therefore, in step 105, the input waiting of the set value display area 74 is set to the digit frame 74b, and only the numerical values of "6 to 9" are displayed in the input numerical value display area 75 (FIG. 8B). On the other hand, when "7" is selected on the touch panel 48, the girder frame 74b
The numerical value is displayed on.

Then, by the processing of step 104, 3
The value that can be set in the digit is tested, and in the above example, it is "0.
Numerical values of “˜9” are displayed in the input numerical value display area 75.
Correspondingly, when the numerical value “5” is selected, the digit frame 74
The numerical value is displayed in c. (Step 108) When it is determined in step 107 that all digits have been input, “write” is written in the area 76.
Is displayed. When the user touches the touch panel 48 of the "write" display area 76 after confirming the new settling value, the new settling value is stored in the double settling value memory A 16.

(Step 109) Here, the relationship between the new settling value and another relay settling value is determined in advance by determining whether or not the new settling value satisfies the allowable range. A rationality judgment is made as to whether or not it is satisfied. If at least one is not satisfied, a message to that effect is displayed on the screen to prompt resetting.

(Step 110) Here, it is judged whether or not the setting is completed for all the relays and the set values. This determination is made based on whether or not the touch panel 48 in the "operation start" display area 74 of the display screen 71 is touched with a finger. If not finished, return to step 103,
When the setting is completed, the settling is completed and the double settling value memory A 1
The contents of 6 are copied to the set value memory B 17, and
The contents are transferred to the memory 2 of FIG. 2 (step 11
1).

As described above, according to this embodiment,
Since the allowable range of the settling value and the new settling value input are displayed on the screen, the operator can easily determine whether the numerical value input by the operator is within the allowable range. Therefore, an erroneous input can be found immediately and can be re-input immediately, which shortens the work for setting the settling value.

Further, since the number of digits within the allowable range is displayed in the set value display area 74 in a digit frame, erroneous input can be further prevented.

Further, for each digit of the settling value, only the settable numerical value is displayed on the screen as the settable numerical value, and since the touch panel type input system is adopted, the work of inputting the settling value is further facilitated. It is even more effective in preventing erroneous input.

Further, a function for judging a failure of the settling value set,
Further, since the rationality judgment function is provided, it is possible to check whether or not an abnormal settling value is stored due to memory abnormality or the like, so that the reliability of the settling value improves. Further, reliability is further improved by adding a determination as to whether the contents of the duplicated non-irradiating memories 16 and 17 match.

Further, if the numerical value input means for the set value is such that the numerical value displayed in the input numerical value display area is selectively inputted by a cursor, a touch panel or the like, erroneous input can be further prevented.

Here, the verification procedure of the verification step 104 of the settling value range, which has an important role in the present invention, is performed with the input digit number of 3
The digit set value will be described as an example. The processing procedure is shown in FIG. The first digit, the second digit, and the third digit of the minimum value of the settling value range are set as X1min, X2min, and X3min, respectively. In addition, it is X of the maximum
1max, X2max, X3max. Input values of the first digit, second digit, and third digit of the settling value are X1in, X2in, and X3in.

(1) Settable value The first digit that can be entered is X
It can be judged from 1min to X1max.

(2) The number of inputtable second digit of settling value is divided into three cases.

When X1in is equal to X1min, the inputtable number of the second digit is from Xmin ₂ to 9.

When X1in is equal to X1max, the number of possible inputs is 0 to X2max.

In other cases, the number of possible inputs is 0 to 9.

(3) The number of inputs that can be entered in the third digit is determined. The third digit also needs to be divided into three cases.

X1in is equal to X1min and X2in is X2m
When it is equal to in, the inputtable number of the third digit is from X3min to 9.

X1in is equal to X1max and X2in is X2m
If it is equal to ax, the number of possible inputs is 0 to X3max.

In other cases, the number of possible inputs is 0 to 9.

In this way, by defining the minimum value and the maximum value in advance, it is possible to determine the inputtable numerical value for each digit.

In the present embodiment, an example in which a touch panel is applied as an input means for setting a set value such as a numerical value is shown, but instead of this, a combination method of a mouse and a cursor, a tablet method, a light pen method, etc. The well-known coordinate input type input means can be applied.

[0052]

The present invention has the following effects.

(1) The effort of re-inputting the set value can be saved.

(2) Since there is no mistake due to an erroneous operation by a human, there is no risk of erroneous input of a set value. (3) After entering the set value, the set value range check can be omitted.

(4) The settling operation is easy to understand and the operation time can be shortened.

[Brief description of drawings]

FIG. 1 is a flowchart showing a settling value setting procedure according to a main part of an embodiment of the present invention.

FIG. 2 is an overall block diagram of an embodiment of a protection relay device to which the present invention is applied.

FIG. 3 is a configuration diagram of an embodiment of a settling value setting device of the present invention.

FIG. 4 is an external view of the entire protection relay device to which the embodiment of FIG. 3 is applied.

FIG. 5 is a diagram showing an example of a touch panel type input unit provided on the display unit.

FIG. 6 is a diagram showing an example of a display screen.

FIG. 7 is a diagram showing an example of a display screen.

FIG. 8 is an explanatory diagram showing changes in a set value display area and an input numerical value display area.

FIG. 9 is a flowchart showing a processing procedure of a set value range test.

[Explanation of symbols]

 11 Input Section 12 Setting Processing Section 13 Display Section 14 Relay Data Table 15 Display Screen Format Table 16 Settling Value Memory A 17 Setting Value Memory B 48 Touch Panel

Claims (7)

[Claims] 1. An input means for inputting a settling value of a protection relay and information necessary for setting the settling value, a setting processing means for performing processing relating to the settling value setting, and a display means having a display screen, The relay settling value setting device, wherein the setting processing means displays on the screen of the display means the allowable range of the settling value of the setting target input from the inputting means and the settling value input. 2. The setting processing means according to claim 1, wherein a settling value display area having a digit frame corresponding to the number of digits in the allowable range of the settling value is displayed on the screen, and the settling value display area is provided with the settling value display area. A relay set value setting device characterized by displaying a set value input from an input means. 3. An input means for inputting a settling value of a protection relay and information necessary for setting the settling value, a setting processing means for performing processing relating to the setting of the setting value, and a display means having a display screen, The setting processing means displays, on the screen, a settling value display area having a digit frame corresponding to the number of digits in the allowable range of the settling value to be set input from the input means, and settling based on the allowable range. Only the values that can be set for each digit from the most significant digit to the least significant digit of the value shall be sequentially displayed for each digit in the input numerical value display area of the above screen. After displaying the numerical value sequentially input from the digit frame of the set value display area, calculate the settable numerical value of the next digit determined by the relationship between the upper digit and the allowable range To display A relay set value setting device characterized in that 4. The setting processing means according to claim 3, when the input of the settling value is completed, it is determined whether or not the input settling value satisfies the allowable range, and the setting is not satisfied. In this case, the relay settling value setting device is provided with a failure determination function of displaying the fact on the screen. 5. The setting processing means according to claim 3, when the input of the settling value is completed, the relationship between the input settling value and another relay settling value satisfies a predetermined rule. A relay set value setting device characterized by comprising a rationality judgment function of judging whether or not to do so and displaying a message to that effect on the screen when not satisfied. 6. The method according to claim 3, 4, or 5,
A relay settling value setting device, wherein the settling value numerical value inputting means for selecting the inputting means selects a numerical value displayed in the input numerical value display area with a cursor, a touch panel, a tablet, a light pen or the like. 7. A settling value memory in which settling values related to an electric power system accident determination are stored, and a state quantity of the electric power system is input to obtain a judgment amount necessary for an accident judgment, and settling corresponding to the judgment value. A value is read from the memory, an accident determination means for comparing the read settling value with the determination amount to determine the presence or absence of an accident, and a settling value setting means for variably setting the settling value in the settling value memory. In a protective relay device provided, the settling value setting means is the relay settling value setting device according to any one of claims 1 to 6.