JP2013126296A - Power system protection and control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high operability power system protection and control system.SOLUTION: The power system protection and control system includes: a protection relay apparatus having first and second relay units; and a management apparatus for displaying HI screens and receiving various operations including a setting operation of the first relay unit and a setting operation of the second relay unit. The first and second relay units are loaded with Web servers storing information used for the display of the HI screens. The management apparatus is loaded with a Web browser, and the Web browser acquires desired information from the Web servers of the first and second relay units, displays the HI screen for the first or second relay unit in a first region of a single screen, and displays in a second region a changeover operation button for changing the HI screen displayed in the first region and an end operation button for ending the display of the HI screen.

Description

  The present invention relates to a power system protection control system that protects and controls a power system.

  Even if the system protection relay device used in the power system protection control system is a single device in its device configuration, it may be configured by a plurality of relay units. Further, the HI (Human Interface) screen is configured in units of relay units. Therefore, in order to display the HI screen, it is necessary to assign an IP address to each relay unit. Depending on the system protection relay device, two IP addresses may be assigned even though the device configuration is one device. Monitoring and control are performed using two independent HI screens.

  In the above, two IP addresses are assigned. However, there are cases where only one IP address is assigned to one system protection relay device because of management restrictions and restrictions on the number of IP addresses. . In that case, although one IP address can be realized for one system protection relay device by assigning an IP address + port No. to each relay unit, the HI screen is two independent as before. Monitoring and control are performed using the HI screen (Patent Documents 1 and 2).

JP 2006-311407 A JP 2008-005668 A

  In the case of a system protection relay device composed of a plurality of relay units, it is necessary to monitor and control the HI screen in units of relay units. In that case, the user activates the HI screen corresponding to each relay unit, and performs monitoring and control while switching each HI screen. For this reason, there is a problem that it takes time to start and switch the HI screen.

  Further, there is a problem in that authentication information exists in units of relay units, and login authentication must be performed in units of relay units, and authentication information such as user names and passwords must be registered and deleted.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a power system protection control system having high operability in the display switching operation of the HI screen and operations related thereto.

  In order to solve the above-described problems and achieve the object, the present invention provides a protection relay device including a first relay unit and a second relay unit for protecting and monitoring a power system, and the first relay. A management device that displays the HI screen of the unit and the HI screen of the second relay unit, and accepts various operations including the setting operation of the first relay unit and the setting operation of the second relay unit, Each of the first relay unit and the second relay unit is equipped with a web server storing information used when the management device displays the HI screen, and the management device is equipped with a web browser. Then, the Web browser receives desired information from the Web server of each of the first relay unit and the second relay unit. Based on the acquired information, the HI screen of the first relay unit or the HI screen of the second relay unit is displayed in the first area of the single screen, and the HI screen of the second relay unit is displayed in the first area. A switching operation button for switching the HI screen to be displayed and an end operation button for ending the display of the HI screen are displayed in the second area.

  According to the present invention, the user can smoothly switch the display of the HI screen of the collective unit and the HI screen of the divided unit, and can simultaneously terminate the HI screens of the two units with one operation. That is, it is possible to simplify the operation and improve the operability.

FIG. 1 is a diagram showing a configuration example of a power system protection control system according to the present invention. FIG. 2 is a diagram showing a display switching operation. FIG. 3 is a diagram showing an example of a screen display when a management screen is formed with a control frame and a collective unit frame. FIG. 4 is a flowchart illustrating an example of a display control procedure for the management screen. FIG. 5 is a flowchart illustrating an example of a display switching control procedure for the management screen. FIG. 6 is a flowchart illustrating an example of a display end control procedure of the HI screen. FIG. 7 is a diagram illustrating a configuration example of the power system protection control system according to the second embodiment. FIG. 8 is a flowchart illustrating an example of a user authentication operation performed after the power system protection control system is activated and before the HI screen is displayed.

  Hereinafter, embodiments of a power system protection control system according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration example of a power system protection control system according to the present invention. The power system protection control system includes a protection relay device 1 and a management device 2. The protection relay device 1 and the management device 2 are connected by, for example, an Ethernet cable and perform TCP / IP communication.

  The protection relay device 1 includes an IP conversion unit 11, a relay unit 12 that is a collective unit, and a relay unit 13 that is a divided unit.

  In the power system protection control system of the present embodiment, an IP address is individually assigned to each relay unit, but the management device 2 is common to all relay units when performing TCP / IP communication with each relay unit. A relay unit to be a communication partner is designated by combining the IP address (hereinafter referred to as a common IP address) and a port number assigned to each relay unit. Such communication is realized by providing the IP conversion unit 11. That is, the IP conversion unit 11 has a table in which correspondence relations between IP addresses common to all relay units (hereinafter referred to as common IP addresses), port numbers and IP addresses individually assigned to the respective relay units are described. If the data with the common IP address + port number set is received from the management apparatus, the common IP address + port number is converted into the corresponding IP address (the IP address of one of the relay units). Forward. When data addressed to the management device 2 is received from the relay unit, the IP address assigned to the transmission source relay unit is converted into a common IP address + the port number of the relay unit and transferred.

  The relay unit 12 (collective unit) includes a relay processing unit 121 and a web server 122. The relay processing unit 121 collectively monitors a plurality of buses to be protected and detects an accident on any one of the buses. Outputs a trip command to each circuit breaker installed in a transmission line (line) connected to each bus. The Web server 122 holds various information (power system monitoring results, relay unit setting status, software, etc.) used when the management apparatus 2 displays the HI screen of the own apparatus (relay unit 12). On the other hand, the relay unit 13 (divided unit) includes a relay processing unit 131 and a Web server 132. The relay processing unit 131 individually monitors a plurality of buses to be protected and detects an accident or the like on the bus. In this case, a trip command is output to the circuit breaker installed on the power transmission line (line) connected to the bus that detected the accident. The Web server 132 holds various information used when the management apparatus 2 displays the HI screen of the own apparatus (relay unit 13). The difference between the relay units 12 and 13 is only the operation performed by the relay processing units 121 and 131.

  The management device 2 is a device for a user to perform setting, status confirmation, etc. of each relay unit, and has a display function of an HI screen. The management device 2 is realized, for example, by operating a Web browser 22 in an electronic computer such as a personal computer (hereinafter, PC) 21. Although details will be described separately, the Web browser 22 communicates (TCP / IP communication) with the Web server 122 or 132 included in each relay unit of the protection relay device 1 according to the operation received from the user, and the PC 21 Collecting data related to the screen to be displayed on the display unit (display panel), generating screen display data, and the like. Then, a management screen composed of three display areas of the control frame 23, the collective unit frame 24, and the divided unit frame 25 is displayed. The control frame 23 is a frame for displaying operation buttons, the collective unit frame 24 is a frame for displaying the HI screen of the collective unit, and the divided unit frame 25 is a frame for displaying the HI screen of the divided unit. is there.

  In FIG. 1, the collective unit frame 24 and the divided unit frame 25 are displayed side by side in the same size so that the configuration of the management screen is clear. The collective unit frame 24 and the divided unit frame 25 are exclusively displayed with the width being 100% and the width of the other frame being 0%. An operation button 27 (switching the frame width setting from 100% vs. 0% to 0% vs. 100%) for switching whether to display the collective unit frame 24 or the divided unit frame 25 in the control frame 23 ( Display switch button). Further, an operation button 26 (end button) for ending the display of the management screen is also displayed. Note that “http: //EFFG/Hmi.html” shown in FIG. 1 indicates a location where information (screen data) of the HI screen to be displayed on the collective unit frame 24 is stored. A URL (Uniform Resource Locator), and “http: //EFFG/Hmi.html” is a URL indicating a location where information on the HI screen to be displayed on the divided unit frame 25 is stored. is there.

  FIG. 2 is a diagram showing a display switching operation. As shown in the figure, the Web browser displays a frame to be displayed under the control frame 23 every time the operation button 27 (display switching button) is operated. Switching between the frame 24 for use and the frame 25 for the divided unit. As described above, the display frame (HI screen) is changed by switching the display width setting of the collective unit frame 24 and the divided unit frame 25 between 100% vs. 0% and 0% vs. 100%. Switch.

  FIG. 3 is a diagram showing an example of a screen display when a management screen is composed of the control frame 23 and the collective unit frame 24. As shown in FIG. 3, an operation button 27 (display switching button) for switching whether to display the collective unit frame 24 or the divided unit frame 25 is displayed as shown in FIG. It may be realized by exclusively displaying a display designation button for a split unit frame (corresponding to the “to split screen” button shown in the figure) and a “to collective screen” button. With such a configuration, even when there are three or more relay units, it is possible to switch to a desired HI screen display with a simple operation.

  Next, FIG. 4 is used for the control procedure when the Web browser 22 of the management apparatus 2 displays a management screen including three display areas of the control frame 23, the collective unit frame 24, and the divided unit frame 25. I will explain. FIG. 4 is a flowchart illustrating an example of a display control procedure for the management screen. In the following description, in order to distinguish the relay units 12 and 13, the relay unit 12 is expressed as a collective unit 12 and the relay unit 13 is expressed as a divided unit 13 as necessary. In order to distinguish between the operation buttons 26 and 27, the operation button 26 is expressed as an end button 26 and the operation button 27 is expressed as a display switching button 27 as necessary.

  In a state where the web browser 22 is activated (step S11), an operation for instructing to start displaying the management screen, that is, the URL in the collective unit 12 in which software for realizing the control frame 23 is stored is determined by the user. When designated (step S12), the web browser 22 acquires the control SW (software) stored in the designated URL (web server 122) (step S13). Next, the acquired control SW starts display of the control screen on the control frame 23 and is connected to the collective unit 12 and the divided unit 13 to display data (software) of the HI screen to be displayed on the collective unit frame 24. The HI screen data (software) to be displayed on the divided unit frame 25 is acquired, and the HI screen display on the collective unit frame 24 and the HI screen display on the divided unit frame 25 are started (step S14). The display is performed with the display width of the collective unit frame 24 being 100% and the display width of the divided unit frame being 0% so that the user can see only the collective unit frame 24.

  Thereafter, the control SW confirms whether the display on the collective unit frame 24 and the display on the divided unit frame 25 are completed. For example, a flag indicating that the HI screen display on the collective unit frame 24 is completed and a flag indicating that the HI screen display on the divided unit frame 25 is completed are stored in the storage unit ( SW for displaying the HI screen on the collective unit frame 24 and SW for displaying the HI screen on the divided unit frame 25 are prepared when the display of the HI screen is completed. The flag to be set is set to ON. The control SW determines whether the display on the collective unit frame 24 and the display on the divided unit frame 25 are completed by checking the state of each flag (FLG) (steps S15 and S16). This process is executed because the time required to complete the display of the HI screen in each frame is long (it may take 1 minute or more).

  If either one of the display on the collective unit frame 24 and the display on the divided unit frame 25 is not completed (step S16: No), the flag state confirmation is continued. On the other hand, when both the display on the collective unit frame 24 and the display on the divided unit frame 25 are completed (step S16: Yes), the control SW displays an end button 26 and a display switching button 27 on the control frame 23. These can be operated (step S17).

  Subsequently, the frame display on the lower side of the management screen (the frame displayed under the control frame 23) is changed to the collective unit frame 24 (the frame displaying the HI screen of the collective unit 12) and the divided unit frame 24 (divided). A control procedure for switching between the frames displaying the HI screen of the unit 13 will be described with reference to FIG. FIG. 5 is a flowchart showing an example of a display switching control procedure for the management screen.

  As shown in FIG. 1, the collective unit frame 24 and the divided unit frame 25 are made to be displayed side by side. By specifying the display ratio of the frames, each frame is displayed in accordance with the ratio. Is displayed.

  Specifically, for example, when the user presses the display switching button 27 in a state where the collective unit corresponding screen (control frame 23 + collective unit frame 24) is displayed on the Web browser 22 (steps S21 and S22), the collective unit. The display ratio of the frame 24 for the divided unit and the frame 25 for the divided unit becomes 0: 100 (step S23), and the divided unit corresponding screen (control frame 23 + divided unit frame 25) is displayed instead of the batch unit corresponding screen (step S24). . When the display switching button 27 is pressed while the divided unit correspondence screen is displayed, the display ratio of the collective unit frame 24 and the divided unit frame 25 becomes 100: 0, and the collective unit correspondence screen is displayed again. .

  Subsequently, a control procedure when the display of the HI screen of the collective unit 12 and the HI screen of the divided unit 13 is ended will be described with reference to FIG. FIG. 6 is a flowchart showing an example of the display end control procedure of the HI screen.

  For example, when the user presses the end button 26 in a state where the collective unit corresponding screen (control frame 23 + collective unit frame 24) is displayed on the Web browser 22 (steps S 31 and S 32), the control SW of the control frame 23 is changed. The status of the setting flag of the HI screen (collective unit frame 24) of the collective unit 12 and the setting flag of the HI screen (divided unit frame 25) of the divided unit 13 are confirmed (step S33). When one is set to ON (step S33: No), an error dialog is displayed (the display of the batch unit correspondence screen is not terminated) (step S35).

  Here, the above setting flag is set to ON when the corresponding relay unit is set. When an operation for starting settling of the batch unit 12 is performed, the setting flag on the HI screen of the batch unit 12 is set to ON, and when an operation for starting settling of the split unit 13 is performed, The setting flag on the HI screen is set to ON. When an operation to end the setting is performed, the corresponding setting flag is set to OFF.

  If both the HI screen setting flags of the collective unit 12 and the divided unit 13 are set to OFF (step S33: Yes), both the HI screen of the collective unit 12 and the HI screen of the divided unit 13 are displayed. End (step S34).

  When the status of the setting flag changes, the collective unit 12 and the division unit 13 notify the control SW to that effect, and when the control SW receives the notification that the setting flag is set to ON, The display of the end button 26 may be temporarily ended. That is, the end button 26 may be displayed only when the setting flags of the collective unit 12 and the divided unit 13 are both OFF.

  As described above, in the management device configuring the power system protection control system of the present embodiment, the Web browser displays the HI screen of the collective unit or the HI screen of the divided unit in the first area of one screen, An operation button for switching the HI screen displayed in the first area and an operation button for ending the display of the HI screen are displayed in the second area. As a result, the user can smoothly switch the HI screens of the batch unit and the divided unit. In addition, the HI screens of the two units can be terminated simultaneously with a single operation, and the operability can be improved.

Embodiment 2. FIG.
A power system protection control system according to the second embodiment will be described. The power system protection control system of the present embodiment is characterized by a user authentication operation (login operation). Since the other parts are the same as those in the first embodiment, the description is omitted except for the user authentication operation.

  As described above, a conventional protective relay device including a plurality of relay units is configured to perform monitoring and control using two independent HI screens. Further, in consideration of a protection relay device provided with a single relay unit, user authentication is performed individually for each relay unit. Therefore, when a plurality of relay units are provided, the user needs to perform a login operation a plurality of times, and there is a problem that operability is poor.

  Therefore, the power system protection control system of the present embodiment employs the following configuration to improve operability for user authentication.

  FIG. 7 is a diagram illustrating a configuration example of the power system protection control system according to the second embodiment. In the present embodiment, the collective unit (relay unit) 12 holds the authentication data 123 and uses this authentication data 123 to authenticate the user. It is assumed that the authentication data 123 includes a user name, password, authentication level, and the like. FIG. 7 shows an example in which the Web browser 22 displays a login screen 31 for acquiring information necessary for user authentication.

  FIG. 8 is a flowchart illustrating an example of a user authentication operation performed after the power system protection control system is activated and before the HI screen is displayed.

  When the activation operation of the power system protection control system is performed by the user, the management device 2 first activates the Web browser 22, and the Web browser 22 is linked to the URL (predetermined in the collective unit 12). The control SW is acquired from the URL), and user information including the user name, password, and authentication level is read (steps S41, S42, and S43).

  Next, the control SW displays the login screen 31 (step S44). Thereafter, when the user name and password are input (step S45), the control SW performs user authentication by comparing the user information acquired in step S43 with the information input in step S45 (step S46). . When user authentication is NG (step S46: No), it returns to step S44 and redisplays the login screen 31 in the initial state. If the user authentication is OK (step S46: Yes), the authentication level of the user whose authentication is OK is certified (step S47). Further, the user name of the user whose authentication is OK is notified to the collective unit 12 and the division unit 13. Next, the control SW generates URLs for the collective unit frame and the divided unit frame, respectively (step S48). At this time, the authentication level certified in step S47 is set in each URL parameter. Then, the HI screen of the collective unit 12 and the HI screen of the division unit 13 are displayed (step S49). In step S49, the HI screen is displayed in the same procedure as that shown in FIG. That is, the control SW is connected to the collective unit 12 and the divided unit 13 according to the URL generated in step S48, and the HI screen data (software) to be displayed on the collective unit frame 24 and the HI to be displayed on the divided unit frame 25. Screen data (software) is acquired, and the HI screen display on the collective unit frame 24 and the HI screen display on the divided unit frame 25 are performed. The acquired software differs depending on the user authentication level. For example, when the authentication level is “administrator” indicating a user having more authority, software for displaying the HI screen shown in FIG. 3 is acquired. When the authentication level is “browser” indicating a user having limited authority (for example, a user who is only allowed to confirm the setting state of the relay unit, etc.), the relay is started from the HI screen shown in FIG. Acquire software for displaying a HI screen from which buttons used for unit setting operations (buttons indicating “setting start”, buttons canceling setting, etc.) are deleted. Since the display operation of each HI screen has been described in the first embodiment, the description thereof is omitted.

  Although the case where the collective unit 12 holds authentication data and performs user authentication using this authentication data has been described, the division unit 13 may hold the authentication data.

  As described above, in the power system protection control system according to the present embodiment, one relay unit holds the authentication data, and the management device collectively performs user authentication for the two relay units when the system is activated. Therefore, operability can be improved.

  As described above, the present invention is useful as a power system protection control system including a plurality of relay units.

DESCRIPTION OF SYMBOLS 1 Protection relay apparatus 2 Management apparatus 11 IP conversion unit 12 Relay unit (batch unit)
13 Relay unit (split unit)
DESCRIPTION OF SYMBOLS 21 Personal computer 22 Web browser 23 Control frame 24 Collective unit frame 25 Divided unit frame 26, 27 Operation button 121, 131 Relay processing unit 122, 132 Web server 123 Authentication data

Claims (4)

A protection relay device comprising a first relay unit and a second relay unit for protecting and monitoring the power system;
A management device that displays an HI screen of the first relay unit and an HI screen of the second relay unit and accepts various operations including a setting operation of the first relay unit and a setting operation of the second relay unit When,
With
Each of the first relay unit and the second relay unit is equipped with a web server storing information used when the management device displays the HI screen,
The management device includes a web browser, and the web browser acquires desired information from the web servers of the first relay unit and the second relay unit, and based on the acquired information, A switching operation button for displaying the HI screen of the first relay unit or the HI screen of the second relay unit in a first area of one screen and switching the HI screen to be displayed in the first area; An electric power system protection control system, wherein an end operation button for ending display of an HI screen is displayed in the second area.   The Web browser has a first frame for displaying the HI screen of the first relay unit, a second frame for displaying the HI screen of the second relay unit, and the switching operation as the single screen. A third frame for displaying the button and the end operation button, and the display width of one of the first frame and the second frame is set to 100% and the display width of the other is set to 0% When the switching operation of the HI screen to be generated and displayed in the first area is performed, the display width setting of each of the first frame and the second frame is switched. The power system protection control system according to claim 1.   3. The web browser does not accept an operation for terminating display of an HI screen when at least one of the first relay unit and the second relay unit is settling. The power system protection control system described in 1. The first relay unit and the second relay unit accept only operations from users registered in advance as users who are permitted to use,
The first relay unit or the second relay unit holds authentication data including a user name and a password of a user permitted to use,
The management device, after startup, obtains the authentication data and allows the user to input a user name and password, and based on the acquired authentication data and the user name and password input from the user, the management device When determining whether to permit the use of the first relay unit and the second relay unit and permitting the use, the user name input from the user is used as the information of the user permitted to use The power system protection control system according to claim 1, wherein the first relay unit and the second relay unit are notified.

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