EP3785340A1 - Dispositif d'affichage de données relatives à un disjoncteur en temps réel et procédé associé - Google Patents

Dispositif d'affichage de données relatives à un disjoncteur en temps réel et procédé associé

Info

Publication number
EP3785340A1
EP3785340A1 EP19736485.4A EP19736485A EP3785340A1 EP 3785340 A1 EP3785340 A1 EP 3785340A1 EP 19736485 A EP19736485 A EP 19736485A EP 3785340 A1 EP3785340 A1 EP 3785340A1
Authority
EP
European Patent Office
Prior art keywords
status
signals
value
ied
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19736485.4A
Other languages
German (de)
English (en)
Inventor
Manigandan P
Hardik DAVE
Jithin KP
Saurabh Singh
Arinjai Gupta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP3785340A1 publication Critical patent/EP3785340A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/006—Calibration or setting of parameters

Definitions

  • TITLE "A DEVICE FOR DISPLAYING BREAKER RELATED DATA IN REAL-TIME AND A METHOD THEREOF"
  • An Intelligent Electronic Device (also referred as protection relay) is generally used for protection of power equipment in the power distribution system by operating a circuit breaker connected in an electrical power line with the power equipment, when a fault is detected by the IED in the power line/equipment.
  • the IED is configured for performing various functions relating to control and protection including fault indication.
  • the information related to faults are displayed on a Local Human Machine interface (LHMI) provided in the IED.
  • LHMI Local Human Machine interface
  • a control function to operate the circuit breaker connected to an IED can be a logical function comprising several status signals, reference signals and several Boolean (logical) operations.
  • the invention describes a provision made in the IED to display the causes of failure for unsuccessful execution of the control function to operate the circuit breaker and thereby provide assistance to the operator of the IED to diagnose the cause for the failure by identifying status of the signals processed in the control function.
  • IED Intelligent Electronic Device
  • LHMI Local Human Machine Interface
  • the IED receives signals comprising electrical and physical parameters of the power equipment from one or more measurement devices provided in the power system at predefined time intervals.
  • the electrical parameters can include at least one of, a current, a voltage and one or more derived parameters.
  • the physical parameters can include conditions of the power equipment comprising at least one of a temperature of the equipment, position of contacts of circuit breakers, vibrations in the equipment, etc.
  • the one or more measurement device can include, but are not limited to, a current transformer, a voltage transformer, a temperature sensor, a vibration sensor, a position sensor, etc.
  • the IED processes the signals to obtain a status of each signal.
  • the signals can be processed by an alternate unit/ device/ system, and IED can receive the status of the signals.
  • the value of the status of the received signals is stored in a dedicated/ shared memory (also referred as LHM I memory throughout the disclosure).
  • the LHMI memory is a part of the main memory associated with the processor, which is dedicated to store the value of the status of the received signals.
  • the IED is configured with an application function including logical functions of the status of the signals.
  • the application function is configured to be executed by the IED using a value of the status of the signals when personnel provides an input to the IED (e.g., reset the breaker) to control the circuit breaker associated with the IED.
  • An outcome of the execution of the application can be different from an expected outcome when a value of the status of t the signals is different from a value of the status of a reference signal.
  • the !ED stores the value of status of reference signal.
  • each received signal can have a corresponding reference signal. Examples of status of the signals can include "OK", "KO", etc.
  • the status "OK" can indicate that the value of the status of the received signals matches the value of the status of corresponding reference signal.
  • the value of status of the received signals stored in the LHMI memory are validated by comparing the value of the received signals with value of corresponding reference signals to determine exact cause of the different outcome of the application function.
  • the value of the status of the received signals are configured to be displayed on the LHMI provided in the I ED. in an embodiment, only a predefined number of values among the value of the status of the received signals are configured to be displayed on the LHM I. In an embodiment, at any instant of time, the number of values displayed on the LHMI is less than the number of values stored in the IED.
  • the IED identifies a value of the status of the at least one received signal different from the value of the status of corresponding reference signal.
  • the value of the status of the at least one received signal is configured for displaying on the LHMI.
  • the value of the status of the at least one received signal is less than or equal to the predefined number of values the LHMI provisions for displaying.
  • the predefined number of values configured to be displayed on the LHMI is calculated based on dimensions of a screen provided in the LHM I.
  • the value of status of the received signals can change due to various reasons including effects of temperature, and the like in an embodiment, the changed value of the status of the signals can be referred as updated value of the status of the received signals throughout the disclosure.
  • the IED identifies updated value of the status of the signals and configures the updated value of the status of the signals for displaying on the LHMI in an embodiment, the IED can validate the updated value of the status of the received signals to ensure that the value is not changed again.
  • the validation of the updated value can be referred as pre-operate check in the present disclosure in an embodiment, a predefined number of values from the updated value of the status of the received signals are configured for displaying. For example, consider there are 10 signals, each having a value indicating a status. Consider that the LHMI provisions only 2 values for displaying. Thus, only 2 values among the values of the 10 signals are displayed on the LHMI.
  • FIG. 1 is a representation of an IED configured to operate circuit breakers, in accordance with an embodiment of the present invention
  • FIG. 2 is a simplified block diagram of an IED configured to display information related to faults on a LHMI configured in the IED, in accordance with an embodiment of the invention
  • Figure 4a-4e are a simplified representation of a screen of a LHMI for displaying real- time information related to faults, in accordance with an embodiment of the present disclosure
  • Figure 5 is a simplified block diagram illustrating memory management in the IED for displaying information related to faults on a LHMI, in accordance with an embodiment if the invention
  • Figure 6a-6f are a simplified representation of a screen of a LHMI for configuring pre operate check to enable operations of a breaker, in accordance with an embodiment of the present disclosure
  • a substation comprising one or more power equipment (105), an IED (101), a voltage transformer (VT) (102), a current transformers (CT) (103), a circuit breaker (104).
  • the IED (101) receives signals associated with electrical parameters of the power equipment (105) from the CTs (103) and VTs (102) via the process bus (not shown).
  • There can be other measuring/sensing devices (not shown) that provide measure/status relating to a condition of the power equipment including the circuit breaker being operated by the IED (for e.g., contact status in the circuit breaker, temperature of a component in a power equipment) in the power distribution system.
  • the I/O interface (201) receives the signals comprising the electrical and the physical parameters from the CT (103), the VT (102) and other sensors/measuring devices connected in the substation.
  • the I/O interface (201) can receive the signals at predefined time intervals.
  • the signals from the I/O interface (201) are fetched by the processor (203) for processing the application/contro! function.
  • the processor can perform pre-processing for determining a status from the measured/sensed signals.
  • the processor of the IED (101) can be pre-processing or computing by the processor of the IED (101) to determine binary status from a signal as a binary status information by comparing the measured value or derived value from the measurement/sensor signals with a reference value for logical combination in the control function.
  • the processor (203) is configured to execute the application function (204) using the binary value of the received signals.
  • the execution of the control function (204) outputs a logical value (e.g.
  • a Boolean value that is configured for use to operate the circuit breaker associated with the IED and as per the control function (e.g., a "Enable close” status signal for close operation of the circuit breaker derived from a control function where the control function combines status from various signals in a logical manner using "OR”, “AND”, “NOT” binary operations).
  • the OR1 logic block (303) receives inputs from an AND2 logic block (305) and an AND3 logic block (306).
  • the control application when executed provides an "enable_c!ose" signal to close the circuit breaker based on a logical condition as defined in the control application function in the case any of the signal status is not as per expectation, the logical function on execution will not be able to perform enabling circuit breaker close function.
  • the processor (203) can provide a unique ID to each status of the received signals (signals received from the logic blocks) and also store in the LHMI memory for display one or more signal status to the operator.
  • Table 1 provided below illustrates a representation of storing each status of the received signals along with the unique ID in the LHMI memory.
  • a place holder is provided to each status of the signal.
  • the place holder of a first status of the signal represents base array of status of the received signals logically associated with the first status of the signal.
  • the place holder of status of the received signal "Ena close” is "19".
  • the place holder "19" corresponds to base array of the status of the signal received from the AIMDl logic block (302).
  • the I ED is configured to display the failure of close operation and also provide with an option to diagnose the failure of close operation.
  • Such display of the status and the option to diagnose is not limited to only the dose operation but to all the operation/function (e.g , open, bypass etc) connected with the circuit breaker.
  • Figure 4a shows a simple diagram of a screen showing failure of breaker operation.
  • the screen (206) shows a message that the breaker operation has failed.
  • the screen (206) provides an option to diagnose the failure.
  • the processor (203) validates the value of the received signals to identify exact source causing the failure of the breaker operation.
  • the processor (203) compares the binary value of each of the received signal with the binary value of corresponding reference signals. For example, the received signal “enable close” for the breaker has a binary value of 1. The reference signal “enable dose” has a binary value 0. The comparison between the binary values of the received signal and the corresponding reference signals does not match. Thus, the received signal is not as per the expectation and is a cause for the failure of the breaker operation. The comparison is performed for all such signals received by the IED (101). Such inconsistency/ mismatch in the binary value of the received signals is identified by the processor (203) for signals connected with the circuit breaker block (301) and also through the drill down of the control function block associated with received signal resulting in the failure of execution.
  • the status for that signal is set as "KO” for display purpose as an example (other representations or use of binary values can also be done). If the binary value of the signal matches the binary value of the reference signal, then the status is set as "OK” in this example. A person skilled in the art should know that any such status can be set that conveys that the binary value of the received signal does not match or match the binary value of the reference signal.
  • the signal "Enable dose” is derived from a logical block “circuit breaker” as shown in Figure 3. The logical block “circuit breaker” is further connected to other logical blocks like "AND”, “OR”, “NOT”, etc.
  • the connection between the logical blocks resemble a tree structure with the circuit breaker as a primary node (root node).
  • the validation can be extended to the other logical blocks by traversing in a backward direction through the tree structure, thereby identifying a source logical block causing the unexpected outcome of the application/ control function (204).
  • the result of validation is then displayed on the screen (206).
  • the screen (206) is configured to display a predefined amount of data (predefined characters/ values) based on dimensions of the screen (206).
  • Figure 4b shows a page displaying breaker diagnostics. As shown, the breaker
  • the screen (206) provided in the LHM I (205) can display the binary value of all the received signals along with the logical node information and an associated status ("OK", "KO”).
  • the screen (206) is configured to display only the binary value of the signals which are different from the binary value of the corresponding reference signals (display only the logic block "AND3" and corresponding status "KO". The user can see the status of the logical nodes to appropriately operate the circuit breaker/ decide for maintenance.
  • the screen (206) has a predefined dimension, thus provisioning only predefined number of binary values/ characters to be displayed. If the binary value of the received signals are more than the predefined number of binary values, then the binary value of received signals are displayed on one or more pages in the screen (206). Each page is configured to display the predefined number of binary values at any instant of time.
  • the screen (206) can be provisioned to display only 5 binary values, corresponding status and name of the functional block.
  • a first page can display first 5 binary values and a second page can display subsequent 5 binary values.
  • a third screen and a fourth screen can display 5 values each such that all the 20 values are displayed.
  • a person skilled in the art would understand that, likewise many pages can be configured in the screen (206) and each screen (206) is provisioned to display the predefined number of binary value.
  • the processor (203) renders the predefined number of values from the LHMI memory for displaying on the screen (206).
  • the binary values stored in the LHMI memory can be less than the number of binary stored in the memory (202).
  • Figure 5 illustrates memory management by the processor (204) in the IED (101).
  • the LHMI memory can be a segment of the memory (202).
  • the LHMI memory is configured as a portion from the memory (202) associated with the processor to support real time display of the information being fetched about the status of the signals.
  • the LHMI memory can be configured to store only the binary value of the received signals.
  • the processor (203) configures predefined number of binary values from the binary value of the received signals to be displayed on the screen (206) Considering the above example, 20 binary values are stored in the LHMI memory.
  • the processor (203) renders 5 binary values at a time for displaying on the first screen. Further, the processor (203) renders subsequent 5 binary values for displaying on the second screen. Likewise, the processor (203) renders a subsequent 5 binary values for displaying on each of a third screen and a fourth screen.
  • the predefined number of binary values is rendered in a sequential manner such that the information is in the order. For example, the processor (203) renders the first 5 binary values from the 20 binary values for displaying on the first page and renders the subsequent 5 binary values for displaying on the second page.
  • the processor (203) can lock the predefined number of binary values in the LHMI memory before displaying on the screen (206), thereby not have the values updated during the display period. Locking the predefined number of binary values also enables sequential fetching of values from the LHMI memory.
  • the parameters of the electrical status signals can change during the time when the signal status is being viewed by the operator
  • the processor (203) has validated the value of the status signal and has stored the value of the status signal for displaying on the screen (206), the value of the status signal can be updated.
  • the processor (203) configures the screen (206) to display the updated binary value without validating the updated value.
  • the processor (203) can validate the updated signal status value and then configure the validated signal status value to be displayed on the screen (206).
  • the updated binary value of the status signals is stored in the LHMI memory and replaces/ overwrites/ dumps the previously stored binary values. Storing the updated binary values enables displaying real -time data on the screen (206). For example, with reference to figure 3, consider that status of "AND1" is displayed as “OK” in a first screen and the user navigates further to see inputs to the "AIMD1". Consider a second screen displays the logic block "OR1" and a status "OK”. As the user can require few seconds to view the second screen, the value at the input of the "AND1" can be updated and the processor (203) executes the application function (204) using the updated value which can result in failure of the breaker operation.
  • the predefined number of binary values from the binary values/ updated binary values of the received signals are rendered and are displayed on the screen (206).
  • the controls (207) enables the personnel to perform the operations.
  • the controls (207) can be a button in the IED to enable close function for the circuit breaker.
  • the controls (207) can include a button to bypass the control breaker.
  • the controls (207) are used to provide inputs to the IED (101) for performing control and protection operations.
  • the processor (203) processes the received signals and displays the exact cause of the unexpected outcome.
  • the user can analyze the data displayed and can choose to operate the breaker. Before providing control inputs to operate the breaker, the user can choose to check if the status of the logical blocks has changed.
  • Figure 6a shows a screen (206) displaying a message to the user that the breaker operation is enabled. Also, the screen (2.06) displays an option for performing pre-operate check.
  • the processor (203) executes the application function (204) with real-time value of the received signals and displays the results of the validation.
  • Figure 6b-6f shows the screen (206) displaying the logical blocks and corresponding status.
  • the user can operate the circuit breaker or call for a maintenance.
  • the pre-operate check can act as a fail-safe mechanism and provides added security.
  • Figure 7 illustrates method steps for displaying information in real-time on the screen
  • the I/O interface (201) receives signals from the one or more measurement devices.
  • the processor (203) fetches the signals from the I/O interface and process to obtain status of the signals. Values of the status signals are used for executing the application function (204) configured in the processor (203).
  • the processor (203) executes the application function (205) including the logical function of status of signals received from the one or more measurement devices.
  • the processor (203) validates the binary values of the status of the signals when the outcome of execution of the application function (205) is different from an expected outcome of execution of the application function (205). The validation is performed by comparing the binary value of the received signals with binary value of the corresponding reference signals. The binary values of the received signals are stored in the LHMi memory. in an embodiment, the processor (203) renders predefined number of binary values from the validated binary values of the received signals in the LHMI memory for displaying on the screen (206). The validated binary values of the received signals can be displayed using one page or multiple pages.
  • the present disclosure discloses an IED for validating the binary value of the received signals.
  • the validated binary value of the received signals is displayed on the LHMI (205) in real-time.
  • the real-time values displayed on the LHMI (205) are used to enable operations of the one or more circuit breakers (104).

Abstract

L'invention concerne un IED permettant le fonctionnement d'un disjoncteur connecté dans un système de distribution d'énergie en affichant les données en temps réel relatives au disjoncteur. L'IED reçoit des valeurs d'état de signaux d'un ou de plusieurs dispositifs de mesure. Une fonction d'application est configurée dans m'IED comprenant les fonctionnalités logiques de l'état des signaux. L'IED exécute la fonction d'application et valide les valeurs de l'état des signaux en les comparant à des valeurs de référence d'état des signaux. Les valeurs validées de l'état des signaux sont configurées pour s'afficher sur une LHMI configurée dans l'IED lorsque les valeurs de l'état sont mises à jour. L'IED reçoit les valeurs mises à jour et valide les valeurs mises à jour, puis configure les valeurs mises à jour devant être affichées sur la LHMI. À tout instant, un nombre prédéfini de valeurs est affiché sur la LHMI.
EP19736485.4A 2018-04-23 2019-04-22 Dispositif d'affichage de données relatives à un disjoncteur en temps réel et procédé associé Pending EP3785340A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201841015350 2018-04-23
PCT/IB2019/053305 WO2019207459A1 (fr) 2018-04-23 2019-04-22 Dispositif d'affichage de données relatives à un disjoncteur en temps réel et procédé associé

Publications (1)

Publication Number Publication Date
EP3785340A1 true EP3785340A1 (fr) 2021-03-03

Family

ID=67180814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19736485.4A Pending EP3785340A1 (fr) 2018-04-23 2019-04-22 Dispositif d'affichage de données relatives à un disjoncteur en temps réel et procédé associé

Country Status (2)

Country Link
EP (1) EP3785340A1 (fr)
WO (1) WO2019207459A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654539B1 (fr) * 1989-11-16 1994-04-08 Merlin Gerin Declencheur electronique dont la face avant est constituee par un afficheur a ecran plat.
FR2798524B1 (fr) * 1999-09-13 2001-11-02 Schneider Electric Ind Sa Declencheur comportant une interface homme-machine amelioree et disjoncteur comportant un tel dispositif
US10320177B2 (en) * 2012-12-13 2019-06-11 Emneve Pty Limited Power distribution system and method, and circuit breaker for use therein

Also Published As

Publication number Publication date
WO2019207459A1 (fr) 2019-10-31

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