WO2007110004A1 - Procédé pour afficher un enregistrement de données signalant une perturbation dans un réseau d'alimentation en énergie électrique - Google Patents

Procédé pour afficher un enregistrement de données signalant une perturbation dans un réseau d'alimentation en énergie électrique Download PDF

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Publication number
WO2007110004A1
WO2007110004A1 PCT/DE2006/000565 DE2006000565W WO2007110004A1 WO 2007110004 A1 WO2007110004 A1 WO 2007110004A1 DE 2006000565 W DE2006000565 W DE 2006000565W WO 2007110004 A1 WO2007110004 A1 WO 2007110004A1
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WO
WIPO (PCT)
Prior art keywords
fault
supply network
displayed
bar
width
Prior art date
Application number
PCT/DE2006/000565
Other languages
German (de)
English (en)
Inventor
Uwe Anklam
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/DE2006/000565 priority Critical patent/WO2007110004A1/fr
Publication of WO2007110004A1 publication Critical patent/WO2007110004A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0038—Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number
    • H02H1/0053—Means for storing the measured quantities during a predetermined time
    • 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
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/025—General constructional details concerning dedicated user interfaces, e.g. GUI, or dedicated keyboards

Definitions

  • the invention relates to a method for displaying a record indicating a disturbance at a measuring point in an electrical energy supply network.
  • Power supply networks are usually used so-called power-quality devices. These are field devices arranged at specific measuring points in the electrical energy supply network, which detect such measured values which can describe a state of the electrical energy supply network. On the basis of the acquired measured values, which can be, for example, voltage measured values, current measured values, frequency measured values and / or values derived therefrom, such as harmonic distortion factor and flicker, a decision can be made as to whether the electrical power supply network is in a faulted state, ie in a condition in which the electrical energy quality is not within the limits prescribed in corresponding standards. This can occur, for example, due to load fluctuations in the energy supply network, but can also be caused by serious errors, such as a short circuit.
  • the measured values are usually stored in the form of so-called fault records and can be evaluated with suitable computer programs and displayed graphically, for example as measuring curves.
  • the invention has for its object to provide a method for displaying a data indicating a fault in an electrical energy supply network, with which the operating staff of the power grid can be quickly and comprehensively informed about the current and past state of the electrical energy supply network.
  • a method for displaying a record indicating a disturbance at a measuring point in an electrical energy supply network in which the following steps are carried out: a) Measured values representing a state of the electrical energy supply network are displayed at the measuring point in the electrical power supply network describe, recorded and converted into digital measurement data; b) the digital measurement data is checked to see if it indicates a fault in the electrical power grid; c) in the event of a fault, the digital measurement data generated during the duration of the fault is stored as a record indicating a fault in the electrical power grid; d) the data record is transmitted to an evaluation data processing device and e) the data record is stored by the evaluation data processing device and displayed by means of a display device as a beam extending along a time beam, the width of the beam being the duration of the disturbance in the electrical Energy supply corresponds.
  • the particular advantage resides in the fact that the duration of the disturbance is determined on the basis of the data record by means of the evaluation data processing device, and a display is generated which corresponds to the operating personnel of the energy supply network a simple conclusion on the time and duration of the disturbance allowed.
  • the steps a), b) and c) are carried out within a single field device arranged at the measuring point.
  • a field device is e.g. a so-called power quality field device in which the measured values are converted into digital measurement data and the digital measurement data are automatically transmitted, e.g. be checked for compliance with certain limit values. If the limit value is exceeded, the power quality field device initiates the recording of the digital measured data during the duration of the fault, ie as long as the limit value has been exceeded.
  • steps a) and c) are performed within a first field device and step b) is performed within a second field device, wherein upon detection of a
  • a start signal is output from the second field device to the first field device, which in the first field device triggers the storage of the digital measurement data according to step c).
  • the recording first field device is, for example, a so-called disturbance recorder with a trigger input for an external signal, via which the beginning of the recording can be started.
  • Both mentioned embodiments can advantageously be further developed in that by means of the evaluation data processing device a check is made as to whether the width of the bar to be displayed is smaller than or equal to the width of a pixel of the display device, and in this case as the displayed width of the bar Pixel or the width of a predetermined number of adjacent pixels is selected.
  • a check is made as to whether the width of the bar to be displayed is smaller than or equal to the width of a pixel of the display device, and in this case as the displayed width of the bar Pixel or the width of a predetermined number of adjacent pixels is selected.
  • the evaluation device not only displays graphic information about the duration of the disturbance in the electrical energy supply network, but also displays the temporal position of a plurality of disturbances in the electrical energy supply network relative to each other.
  • the evaluation data processing means may be provided in an advantageous manner that by means of the evaluation data processing means a check is made as to whether the distance to be displayed between two adjacent bars would be smaller than or equal to the width of a pixel of the display device and in this case the neighboring bars are displayed next to each other without gaps , In this way, a display of the Beams are guaranteed with display devices of any resolution.
  • a temporal course of the digital measurement data of the respective data set is displayed or in the case of each indicating a disturbance adjoining beams without borders by the display device another time beam with such scaling changed that on the other timeline, the individual bars spaced displayable are.
  • a zoom function is provided, so to speak, by means of which the operating personnel of the electrical power supply network can change the scaling of the time beam in such a way that either the individual digital measurement data is displayed for a single fault or several beams initially adjacent to each other without any spacing through the enlarged display now can be displayed at a distance.
  • the measured values describing the state of the electrical power supply network are voltage measured values, current measured values, frequency measured values and / or measured values derived therefrom (for example harmonic distortion, flicker).
  • FIG. 1 shows a first exemplary embodiment of a system for carrying out a method for displaying a data record indicating a fault in an electrical energy supply network
  • FIG. 2 shows a second embodiment of a system for carrying out such a method
  • FIG. 3 shows, by way of example, a time beam displayed in a display device of an evaluation data processing device
  • FIG. 4 shows by way of example a timeline which is scaled to display comparatively long periods of time
  • FIG. 5 shows a first example of the display of interference-indicating bars by means of a display device screened in pixels
  • FIG. 6 shows a second example of the display of disturbance-indicating bars by means of a display device screened in pixels
  • FIG. 7 shows a time beam represented by a display device with a display element positioned thereon
  • FIG. 8 shows a further illustration of the time beam from FIG. 6 with the display element positioned at another position;
  • FIG. 9 shows a first example of an enlarged illustration
  • Timeline and Figure 10 shows a second example of an enlarged illustrated
  • FIG. 1 shows a system 10 with which a method can be carried out for displaying a data record indicating a fault at a measuring point in an electrical energy supply network.
  • the system 10 includes an electrical power supply network 11 shown only in sections, in which several measuring points 12a, 12b and 12c are provided.
  • the measuring points 12a, 12b and 12c are shown highly schematically in FIG.
  • measured values of one or more measured variables which describe a state of the electrical energy supply network can be detected.
  • a current transformer and a voltage converter for detecting current measured values and voltage measured values can be provided at such a measuring point.
  • a measuring device could be provided for detecting the frequency of the current flowing at the measuring point.
  • phase of the electrical energy supply network such measuring devices are available in accordance with multiple versions at each measuring point; For example, in a three-phase power supply network, three transducers for measuring current readings - one transducer for each phase - are provided at each measurement point, and three voltage transducers for the acquisition of voltage readings.
  • a single measured variable ie only a single measuring channel, will be considered below, which may be, for example, the current of a first phase of a three-phase power supply network. The explained method However, it can be used accordingly for several measured variables and several phases.
  • a field device 13a, 13b and 13c is located at each measuring point 12a, 12b and 12c, which is, for example, a so-called power quality field device for detecting and monitoring the electrical energy quality of the electrical power supply network respective measuring points 12a, 12b and 12c or may be an electrical protection device with integrated power quality functions.
  • the field device 13c will be considered in more detail.
  • the mode of operation of the field devices 13a and 13b is corresponding.
  • the measured values recorded at the measuring point 12c are detected by means of a measured value detection device 14 of the electric field device 13c and converted into digital measured data.
  • a digital conversion may also take place outside the field device 13c, for example by an external analog / digital converter, or even at the measuring point 12c by using a digital transducer which has digital measurement data at its output gives up.
  • the digital measurement data are fed to a computing device 15 of the field device 13c, by means of which a check takes place as to whether the
  • the computing device 15 for example, perform a threshold comparison to check whether the digital measurement data are within or outside a normal operating range. For example, an excessively high or too low current measurement value at the measuring point 12c can be detected by means of the arithmetic device 15 by means of a threshold value comparison on the basis of its associated digital measured data.
  • the computing device 15 can thereby be limited to a fault. conclusion in the electrical energy supply network 11 infer.
  • Such a disturbance can occur either as a result of fluctuations in the electrical energy supply network, for example due to load changes of the electrical consumers or network oscillations in the electrical energy supply network 11, or due to external influences, such as a short circuit at a location of the electrical energy supply network 11.
  • the digital measurement data is stored in a data memory 16 of the field device 13c during the duration of the fault.
  • time stamps are also stored which indicate the detection time of the respective digital measurement data. This allows conclusions to be drawn about the beginning, the duration and the end of a particular fault.
  • the digital measurement data recorded and stored during the duration of the disturbance together form a data record indicating the respective disturbance in the electrical energy supply network 11.
  • the data record stored in the data memory 16 of the field device 13c can be sent, for example, via a communication network 17 to an evaluation data processing device 18, which is arranged, for example, in a network control center of the electrical energy supply network 11 and by operating personnel of the electrical power supply network 11 for displaying and evaluating faults in FIG the electric power grid 11 is used to be transmitted.
  • a wireless data transmission a data transmission by means of a telecommunication connection or a manual data transmission by means of a mobile data carrier can also be used. be set.
  • the evaluation data processing device 18 a display of the data record, as will be explained in more detail later, take place.
  • the remaining field devices 13a and 13b indicated in FIG. 1 carry out corresponding steps at their measuring points 12a and 12b in the electrical energy supply network 11.
  • the data sets generated by means of these field devices 13a and 13b can be transmitted for display to the same evaluation data processing device 18 or correspondingly functioning further data processing devices.
  • FIG. 2 shows an alternative exemplary embodiment of a system for carrying out the method for displaying a data record indicating a fault at a measuring point in an electrical energy supply network.
  • the system shown in FIG. 2 largely coincides with the system shown in FIG. 1, therefore mutually corresponding features have been identified in both figures by the same reference numerals.
  • the system according to FIG. 2 differs from the system shown in FIG. 1 by the type of field devices used. Namely, first field devices 23a, 23b and 23c as well as second field devices 24a, 24b and 24c are provided at the measuring points 12a to 12c, respectively.
  • the interaction of each of the first and the second field device at each measuring point 12a, 12b and 12c shall be represented by way of example on the basis of the first field device 23c and the second field device 24c at the measuring point 12c of the electrical energy supply network 11.
  • measured values corresponding to FIG. 1 are detected and transmitted both to the first field device 23c and to the first field device 23c forwarded to the second field device 24c.
  • the first field device 23c has a measured value acquisition device 25, which performs a measured value acquisition and an analog / digital conversion of the measured values.
  • the analog / digital conversion can, as already explained with reference to FIG. 1, also be carried out outside the first field device 23c.
  • the second field device 24c also has a measured value detection device 26, which accordingly carries out a measured value detection and an analog / digital conversion of the measured values. Even with the second field device 24c, the analog / digital conversion can take place outside the electric field device 24c.
  • a computing device 27 of the second field device 24c a check is made on the basis of the digital measurement data as to whether the electrical energy supply network at the measuring point 12c is in a disturbed or undisturbed state.
  • a start signal is transmitted to the first field device 23c which then, during the duration of the disturbance in a data memory 28, receives the information from the measured value detection device 25 of the first field device 23c stored digital measurement data to generate a data indicating the respective fault record.
  • the second field device 24c shown in FIG. 2 may, for example, be an electrical protection device, as is usually used for monitoring the operation of an electrical energy supply network.
  • electrical protection devices recognize on the basis of the recorded measured values by means of so-called protection algorithms whether the electrical power supply network is in a faulty state, for example due to a fault occurring at one point of the electrical power supply network. short circuit. If the electrical protection device detects a fault, it usually triggers automatically the opening of an electrical circuit breaker with which the disturbed region of the electrical power supply network is disconnected from the rest of the electrical power supply network. Thus, a trouble-free continued operation of the rest of the electrical energy supply network can be ensured.
  • a trigger signal for opening a circuit breaker not shown in FIG. 2 can also be coupled to the first field device 23c as a start signal for storing the digital measurement data.
  • the first field device 23 c can be embodied as a comparatively simple fault recorder, which does not have to perform its own fault determination.
  • the disturbance recorder has a trigger input for an external start signal, via which the start signal is fed by the protection device for starting the recording of the digital measurement data.
  • the further method according to FIG. 2 proceeds correspondingly to the explanation for FIG. 1, that is to say that the data record indicating the generation of the disturbance is transmitted to an evaluation data processing device 18 and displayed there, as explained in more detail below.
  • FIG. 3 shows, by way of example, a display window represented by means of a display device of the evaluation data processing device 18, such as a monitor, as is known as such from conventional computer operating systems.
  • the display window 30 in this case shows a timeline 31, which is designed in the form of an arrow.
  • ken 32a, 32b and 32c Each of these bars 32a to 32c represents a fault that has occurred at a measuring point of the electrical power supply network, the width of the respective bar 32a to 32c corresponding to the duration of the respective fault.
  • the disturbance starting at a time t1_a and ending at a time t1_e is the longest time of the three disturbances displayed in the display window 30, beginning and closing at a time t2_a a time t2_e ending disturbance indicated by the bar 32b is the second longest disturbance and the disturbance starting at a time t3_a and ending at the time t3_e represented by a bar 32c is the shortest of the three disturbances represented.
  • the duration of the noise indicated by the beam 32c is half as long as the duration of the noise indicated by the beam 32a, because the corresponding beam 32c is half as wide as the beam
  • Bar 32a The distances between the individual displayed bars 32a to 32c correspond to the time intervals between the individual faults. Since a comparatively long time is usually displayed with a timeline to indicate as many disturbances detected over a long period of time, and the disturbances in the electric power grid will be comparatively short compared with the time indicated by the timeline, the width actually to be displayed becomes the bar often smaller than the smallest line width to be displayed by the display device of the evaluation data processing device. Therefore, as shown in FIG. 4, such bars are shown along a timeline 41 only as line-shaped bars 42a to 42g. At The timeline 41 in FIG. 4 clearly shows a temporal accumulation of disturbances in the area of the displayed bars 42b to 42f. If, in addition, a temporal marking, not shown in FIG. 4, is additionally provided on the time beam 41, for example by registered times or days, then the disturbances represented can be assigned at a glance to a corresponding clock or time of day.
  • FIG. 5 shows a section 51 of a display device of the evaluation data processing device screened by several pixels 52. These may be, for example, the pixels of a TFT monitor. It also recognizes a portion 53 of a displayed timeline. Along this time beam, a bar 54 indicative of a disturbance should actually be displayed, the duration of which would correspond to a width which is smaller than the width of a pixel 52 of the display device. There a
  • Beam 54 can not be technically displayed with such a small width, a bar 55 with the width of, for example, a pixel is displayed by the display device instead.
  • a width of one dot another minimum width of the beam may also be predetermined, such as a minimum width of four pixels, as shown by the bar 56.
  • FIG. 6 also shows a part 61 of a display device provided with pixels 62, by means of which two consecutive bars 63 and 64 indicating disturbances are to be displayed, the time interval of the two disturbances being a spatial distance of the bars along the time beam 65 would be less than the width of a pixel 62. Therefore, the two bars 63 and 64 are instead displayed with the display device without spatial distance, so without a spacing, so that they appear on the display device as a single bar 66.
  • FIGS. 7 and 8 show display windows 71 and 81, respectively, which are displayed by means of the display device of the evaluation data processing device.
  • the display windows 71 and 81 each show a timeline 72 and 82, along the disturbance indicating bars are shown.
  • the two illustrated bars 73 and 74 indicate a time interval between the corresponding disturbances which, according to the explanation for FIG. 6, is less than the minimum spatial distance that can be represented by the display device, ie. H. to a time interval that would correspond to a spatial distance of less than one pixel. Therefore, the two bars 73 and 74 are shown adjacent to each other with no spacing, and in principle appear like a single wider bar.
  • an additional text field 76 or 86 is displayed when positioning a display element 75, for example a mouse pointer on one of the bars 73 and 74, respectively Beginning of the fault represented by the respective bar.
  • the display element 75 is positioned on the left-hand side bar 73 and the text field 76 indicates the beginning of the disturbance indicated by the bar 73. This is, for example, the time stamp of the first digital data value of the data record recorded during the corresponding fault.
  • the display element 75th is positioned on the right side bar 74 and a text line 86 is displayed with the beginning of the error indicated by the bar 74.
  • the fade-in of text fields can be performed not only in gap-adjacent bars with positioned on a bar display element, but also with individual bars displayed.
  • a magnification function (zoom function) for displaying the bars extending along the time beam will be explained below with reference to FIGS. 9 and 10.
  • an input key of the evaluating data processing device e.g., a mouse button or a selected keyboard key
  • an enlargement of the displayed bars as shown in FIG. The display according to FIG. 9, after the display element has been positioned, results in four bars lying next to one another without gaps and the simultaneous activation of an input key.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne un procédé qui sert à afficher une perturbation se produisant au niveau d'un point de mesure (12a, 12b, 12c) d'un réseau d'alimentation en énergie électrique (11) et grâce auquel il est possible de générer une information simple et complète sur l'état du réseau d'alimentation en énergie électrique. Le procédé selon l'invention comprend les étapes suivantes : a) des valeurs de mesure sont acquises au niveau du point de mesure et converties en données de mesure numériques; b) ces données de mesure numériques sont vérifiées pour déterminer si elles signalent une perturbation dans le réseau d'alimentation en énergie électrique (11); c) en présence d'une perturbation, les données de mesure numériques générées pendant la durée de la perturbation sont sauvegardées sous forme d'enregistrement de données signalant une perturbation; d) cet enregistrement de données est transmis à un dispositif informatique d'évaluation (18); e) l'enregistrement de données est sauvegardé par le dispositif informatique d'évaluation (18) et affiché par un dispositif d'affichage sous forme de barre (32a, 32b, 32c, 73) s'étendant le long d'un vecteur temporel (31,72), la largeur de la barre correspondant à la durée de la perturbation dans le réseau d'alimentation en énergie électrique (11).
PCT/DE2006/000565 2006-03-27 2006-03-27 Procédé pour afficher un enregistrement de données signalant une perturbation dans un réseau d'alimentation en énergie électrique WO2007110004A1 (fr)

Priority Applications (1)

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PCT/DE2006/000565 WO2007110004A1 (fr) 2006-03-27 2006-03-27 Procédé pour afficher un enregistrement de données signalant une perturbation dans un réseau d'alimentation en énergie électrique

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PCT/DE2006/000565 WO2007110004A1 (fr) 2006-03-27 2006-03-27 Procédé pour afficher un enregistrement de données signalant une perturbation dans un réseau d'alimentation en énergie électrique

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Cited By (6)

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US8525522B2 (en) 2010-04-21 2013-09-03 Schweitzer Engineering Laboratories Inc Fault location in electric power delivery systems
US8558551B2 (en) 2010-04-21 2013-10-15 Schweitzer Engineering Laboratories Inc Fault location in electric power delivery systems
US8791704B2 (en) 2011-10-11 2014-07-29 Schweitzer Engineering Laboratories Inc. Fault-type identification for electric power delivery systems
US8942954B2 (en) 2010-09-16 2015-01-27 Schweitzer Engineering Laboratories, Inc. Fault location in a non-homogeneous electric power line
WO2016091239A1 (fr) * 2014-12-12 2016-06-16 A. Eberle Gmbh & Co. Kg Dispositif de mesure et/ou de contrôle et procédé pour mesurer et/ou évaluer la qualité et/ou la stabilité de réseaux électriques
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8525522B2 (en) 2010-04-21 2013-09-03 Schweitzer Engineering Laboratories Inc Fault location in electric power delivery systems
US8558551B2 (en) 2010-04-21 2013-10-15 Schweitzer Engineering Laboratories Inc Fault location in electric power delivery systems
US8942954B2 (en) 2010-09-16 2015-01-27 Schweitzer Engineering Laboratories, Inc. Fault location in a non-homogeneous electric power line
US8791704B2 (en) 2011-10-11 2014-07-29 Schweitzer Engineering Laboratories Inc. Fault-type identification for electric power delivery systems
WO2016091239A1 (fr) * 2014-12-12 2016-06-16 A. Eberle Gmbh & Co. Kg Dispositif de mesure et/ou de contrôle et procédé pour mesurer et/ou évaluer la qualité et/ou la stabilité de réseaux électriques
US10859639B2 (en) 2018-10-02 2020-12-08 Schweitzer Engineering Laboratories, Inc. Fault-type identification in an electric power delivery system using composite signals

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