WO2007110004A1 - Method for displaying a dataset defining a fault in an electrical power supply network - Google Patents

Method for displaying a dataset defining a fault in an electrical power supply network

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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
Authority
WO
Grant status
Application
Patent type
Prior art keywords
device
data
power
electrical
display
Prior art date
Application number
PCT/DE2006/000565
Other languages
German (de)
French (fr)
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

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2513Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/0038Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number
    • H02H1/0053Means for storing the measured quantities during a predetermined time
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02Details
    • H02H3/04Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/025General constructional details concerning dedicated user interfaces, e.g. GUI, or dedicated keyboards

Abstract

The invention relates to a method for displaying a fault at a measuring point (12a, 12b, 12c) of an electrical power supply network (11), by means of which simple and comprehensive information about the status of the electrical power supply network can be generated, wherein the following steps are carried out: a) measured values are taken at the measuring point and converted into digital measured data, b) the digital measured data are checked for whether a fault in the electrical power supply network (11) is defined thereby, c) in the case of an extant fault, the digital measured data generated during the life of the fault are stored as a fault-defining dataset, d) the dataset is transmitted to an analysis and data processing device (18) and e) the data set is stored by the analysis and data processing device (18) and displayed by a display device as bars (32a, 32b, 32c, 73) along a time base (31,72), the width of the bars corresponding to the life of the fault in the electrical power supply network (11).

Description

description

A method for displaying a disturbance in an electrical power supply network indicating data set

The invention relates to a method for displaying a disturbance at a measurement point in an electrical power supply network indicating data set.

To monitor the electrical power quality in electrical

Power grids called Po who-quality devices are commonly used. Here, it is arranged at specific measurement points in the electrical power grid field devices that detect such measured values, which can describe the state of the electrical power supply system. On the basis of the measured values, which are, for example, voltage measurements, current measurements, frequency measurements and / or derived from these values, such as harmonic distortion and flicker, can act, a decision can be made whether the electrical power grid is in a disturbed state, ie in a state in which the electrical power quality is not within the prescribed in relevant standard works limits. This may for example due to load fluctuations occur in the power grid, but also by serious errors, such as caused a short circuit. On the basis of the detected measurement values, judgment of the electric power quality of the electrical power supply system can thus be made. The measured values ​​are typically stored in the form of so-called fault records and can be evaluated with appropriate computer programs and graphically - curves, for example, as a measuring - are represented. The invention is based on the object of specifying a method for displaying a disturbance in an electrical power supply network indicating data set with which the operating staff of the power supply network can be informed rapidly and comprehensive information on the current and past state of the electrical power supply system.

To achieve this object, a method for displaying a disturbance at a measurement point in an electrical power supply network indicating data set is suggested to be executed in the following steps: a) at the measuring point in the electrical power supply system are measured values ​​that a state of the electrical energy supply network describe detected and converted into digital measured data; b) the digital measurement data are checked to see whether they indicate a fault in the electrical power supply network; c) in case of a fault present the digital measurement data generated during the duration of the interruption are stored as a fault in the electrical power supply system is bender data set; d) the data set is transmitted to an analysis data processing means, and e) the data record is stored by the evaluation data processing device and displayed by a display device as taken along a timeline extending beam, wherein the width of the beam of the duration of the disturbance in the electrical power grid corresponds to.

The particular advantage lies in the fact that the duration of the fault is determined from the data set by means of the evaluation data processing device and a display is generated which allows the operating staff of the power supply system a simple conclusion about the timing and duration of the disorder.

According to a first advantageous embodiment of the inventive method, the steps a), b) and c) is carried out within a single arranged at the measuring point field device. In such a field device is for example a so-called power quality field device, wherein the measured values ​​are converted into digital data and digital data are checked for compliance with certain limits automatically for example. With a limit value is exceeded by the power quality field device to record the digital data for the duration of the disturbance, so long as a threshold overrun, causes.

Another advantageous embodiment is given by the fact that the steps a) and c) are carried out within a first field device and step b) is performed within a two-th field device, wherein upon detection of a

Disturbance in the power supply network is discharged through the second field device, a start signal from the second field device to the first field device, which triggers the storage of the digital measured data according to step c) in the first field device. In this way, a fault in the electrical power grid signal indicative of an existing electrical protection device can be advantageously utilized to cause the recording of the digital data. In this case, it is at the first recording field device, for example a so-called disturbance recorder having a trigger input for an external signal, via which the start of the recording can be started. Both of these embodiments may be advantageously further developed in that a check is by means of the analysis data processing means made as to whether the width of the to be displayed bar would be less than or equal to the width of a pixel of the display device, and in this case than the indicated width of the beam the width of a pixel or the width of a predetermined number of adjacent pixels is selected. In this way, that a comparatively long period of time is also displayed on a time line that has a derar- term temporal scaling, to ensure that any interference, even if its duration would produce a beam that would be narrower than a pixel of the display device can be represented in any case.

Also may be advantageously provided that along the same timeline, respectively several single faults are indicated in the electric energy supply network indicating beam, wherein the distance between two successive bar corresponds to the time interval between the indicated disorders. In this manner not only indicated by the evaluation device a graphical information about the duration of the disturbance in the electrical energy supply network, but also the temporal position of multiple faults in the electrical energy supply network illustrated each other.

In this context it can be provided in an advantageous manner, that a check is carried out by means of the analysis data processing means, whether the to be displayed distance between two adjacent beams would be less than or equal to the width of a pixel of the display device and the adjacent bar is displayed in this case without spacing adjacent to each other are , In this way, a display of the bars can be ensured with display devices of any resolution.

In addition, it can be provided according to a further advantageous development of the inventive method that a positionable on the display device using an input means of the evaluation data processing device display element is displayed on the display device and at a positioned on a bar display element by the display means additionally the temporal beginning of the disturbance indicative text box appears. This results in a time allocation is the single each facilitates fault indicating bar the operators of the power grid.

In this context, may also be advantageously provided that in a positioned on a bar display element and simultaneous activation of an input key of the evaluation data processing device indicating either in the event of a single failure of the beam by means of

Display device, a time profile of the digital measurement is displayed data of the respective data set or in the case of in each case a fault-indicating no spacing aneinander- adjoining beam by means of the display device, another time line with such modified scaling is indicated that in the other time line a distance the single bars displayable are. In this way a zoom function is as it were, provided by means of which can change the scale of the timeline specifically in such a way that operating personnel of the electrical power supply system, that either the corresponding digital measurement data are displayed for a single fault or more first arrival without a distance to each other bordering beams through enlarged views can now display distance. Finally, it can be provided according to a further advantageous embodiment of the inventive method is that the state of the electrical Energieversorgungsnet- zes descriptive metrics values ​​measured voltage values, current measurement, frequency measurement values ​​and / or derived from measured values ​​(for example, distortion, flicker), respectively.

show to further illustrate the invention

1 shows a first embodiment of a system for implementing a method for indicating a disturbance in an electrical power supply network indicative of the data set; 2 shows a second embodiment of a system for performing such a method;

3 shows an example of a display in a display device of a data processing device evaluating the timeline; 4 shows an example of a timeline, which is scaled to show the comparatively long periods of time;

5 shows a first example of the display of faults indicating beam by means of a rasterized in pixels display device; 6 shows a second example of the display of faults indicating beam by means of a rasterized in pixels display device;

7 shows a timeline illustrated by means of a display device with a positioned thereon display element;

8 shows another representation of the timeline of Figure 6 with a positioned at a different location display element; 9 shows a first example of an enlarged presented

illustrated timeline and 10 shows a second example of an enlarged

Timeline.

Figure 1 shows a system 10 with which a method for displaying a disturbance at a measurement point in an electrical power supply network indicating data set can be performed. The system 10 includes a merely in sections illustrated electrical power supply mains 11, in which a plurality of measuring points 12a, 12b and 12c.

The measuring points 12a, 12b and 12c are shown highly schematically in Figure 1; at each of the measuring points measured values ​​can be one or more Messgrδßen describing a state of the electrical power supply grid is detected. For example, a current and a voltage converter can be connected to such a measuring point for detecting values ​​of current measurement and voltage measurements be provided. In addition, a measuring device for detecting the frequency of the flowing current at the measuring point may be provided. Depending on the number of existing at a measurement point phases of the electrical power supply system, such measuring devices are available in accordance with multiple embodiments of each measuring point; For example, in a three-phase power supply network at each measurement point three measuring transducer for the detection of current measured values ​​- provided, and three voltage transducers for the detection of voltage measured values ​​- a transducer for each phase. For ease of presentation, however, is in the following only a single measure, so only one measurement channel, viewed, which may, for example, to control the flow of a first phase of a three phase power supply network. However, the procedural explained reindeer can be used appropriately for multiple metrics and multiple phases.

According to the shown in Figure 1 embodiment sawn is located at each measuring point 12a, 12b and 12c, a field device 13a, 13b and 13c, which is the example a so-called power quality field device for detecting and monitoring the electrical power quality of the electrical power supply system at respective measuring points 12a, 12b and 12c or to an electrical protective device can act quality functions with integrated power.

Below the field device is considered 13c closer. The operation of the field devices 13a and 13b is similar. The measured values ​​captured at the measuring point 12c are detected by means of a data acquisition device 14 of the electrical field device 13c and converted into digital measured data. Alternatively to the illustrated in Figure 1, a digital conversion can also already known outside the field device 13c, such as by an external analog / digital converter, or even at the measuring point 12c by use of a digital transducer to take place, the digital at its output measurement data emits. The digital measuring data calculating means 15 of the field device 13c to-out means that takes place, a check as to whether the

Measuring data indicative of a fault in the electrical power grid. 11 To this end, the computing device 15 may for example perform a threshold comparison to check whether the digital measurement data is within or outside a normal operating range. For example, a high or low current measurement value at the measuring point 12c can be detected by its associated digital data by means of the computing device 15 by a threshold comparison. The computing device 15 can thereby tion on a STOE infer in the electrical power grid. 11 Such interference can occur either by variations in the electrical power supply network, for example due to load changes in the electrical consumers or power oscillations in the electric power supply network 11, or by external influences, such as a short circuit at one location of the electrical power supply system 11, are caused.

Recognizes the computing device 15 is a fault in the electrical power supply network 11, the digital measurement data during the duration of the disturbance in a data memory 16 of the field device 13c are stored. Usually also each time stamps are stored simultaneously with the digital measurement data indicating the detection timing of the respective digital measurement data. This makes conclusions about the onset, duration and end of a particular disorder can be drawn.

The recorded during the duration of the disturbance, and stored digital data together form a respective fault in the electrical power supply network 11 indicating record. The stored in the data memory 16 of the field device 13c record can for example via a communication network 17 processing device to an evaluation data-18, which is arranged for example in a network control center of the electrical power supply system 11 and the operating personnel of the electrical power supply system 11 for display and analysis of disturbances in the electrical power supply network 11 is used, are transmitted. However, wireless data transfer, a data transfer by means of a telecommunication link or a manual data transmission using a mobile data carrier can be set in place of the network switch 17th Means of the evaluation device data processing unit 18 may take place a display of the data set, as will be explained in more detail later.

The remaining displayed in Figure 1 field devices 13a and 13b perform the appropriate steps at their measuring points 12a and 12b in the electric power grid. 11 The data sets generated by these field devices 13a and 13b may be used to display to the same evaluation data processing device 18, or according to other functioning data processing devices are .übertragen.

2 shows an alternative embodiment of a system for implementing the method is shown for indicating a disturbance at a measurement point in an electrical power supply network indicating data set. The system shown in Figure 2 corresponds largely identical to that shown in Figure 1 system, therefore, corresponding features have been characterized marked in both figures with the same reference numerals.

The system of Figure 2 differs from the system shown in Figure 1 by the nature of the field devices used. At the measuring points 12a to 12c are shown in FIG 2 namely in each case first field devices 23a, 23b and 23c and second field devices 24a, 24b and 24c are provided. The interaction of each of the first and second field device at each measuring point 12a, 12b and 12c is to be displayed at the measuring point 12c of the electrical power supply system 11 by way of example with reference to the first field device 23c and the second field device 24c.

1 measured values ​​at the measuring point 12c corresponding to FIG captured and forwarded to both the first field device 23c and to the second field device 24c. The first field device 23c includes a data acquisition means 25, a data acquisition and analog / digital conversion of the measured values ​​is carried out. The analog / digital conversion, as explained to figure 1, already outside the first field device 23c are performed.

Also, the second field device 24c includes a data acquisition device 26, which performs a corresponding measured value acquisition and analog / digital conversion of the measured values. Also in the second field device 24c, the analog / digital conversion is outside the electrical field device 24c can take place. a check is 24c by means of a computing device 27 of the second field device made as to whether the electric energy supply network at the measuring point 12c in a disturbed or undisturbed state is based on the digital measurement data. Recognizes the computing device 27 of the second field device 24c interference at the measurement point 12c of the electrical power supply system 11, as a start signal to the first field device 23c is transmitted, which then during the duration of the disturbance in a data memory 28 of the data acquisition device 25 of the first field device 23c output digital measurement data indicating the respective disturbance to form a data record stores.

it may be an electrical protection device, as is commonly used for monitoring the operation of an electrical power supply system 24c in the example shown in Figure 2 the second field device, for example. Electrical protective devices recognize this on the basis of the recorded measurement values ​​by means of so-called protection algorithms, whether the electrical power supply network is in a disordered state, for example due to a aufgetrete- nen at a location of the electrical energy supply network short-circuit. automatically detect the electrical protection device a fault, so it dissolves usually from opening an electrical circuit breaker to which the disturbed portion of the electrical power supply system is separated from the rest of the electrical energy supply network. So trouble-free continued operation of the remaining electrical power supply system can be guaranteed.

If it is in the second field device 24c in Figure 2 to such an electrical protection device, a trip signal for opening a power switch, not shown in the figure 2 may also be coupled to the first field device 23c as a start signal for storing the digital measuring data. In this case, the first field device 23c can be implemented as a simple fault recorder comparatively, which must not carry out its own fault detection. The disturbance in this case has a trigger input for an external start signal via the start signal of the protection device is fed data to start the recording of the digital measurement.

The further method according to Figure 2 proceeds according to the explanation of FIG 1, that which produced the fault indicating data is transferred 18 and there, as in the following explained in more detail indicated device to an evaluation computing.

In Figure 3 is an example of a game as a monitor, display window shown as it is known per se from standard computer operating systems shown by means of a display device of the analysis data processing device 18, as examples. The display window 30 in this case shows a time line 31, which is in the form of an arrow. Along the time line 31 extend as shown in FIG 3, three BaI- ken 32a, 32b and 32c. Each of the beams 32a to 32c illustrates a fault that has occurred at a measuring point of the electric power supply network, wherein the width of the respective beam 32a to 32c corresponding to the duration of the disorder.

Thus, the display can be seen in FIG 3, that is at the beginning at a time tl_a and at a time tl_e ending interference to the temporally longest of the three faults shown in the display window 30, at the beginning at a time t2_a and a time t2_e ending disorder that appears to the beam 32b is the second longest disorder and in the beginning at a time t3_a and t3_e at the time ending 32c with a bar disturbance represented by the shortest of the disturbances three illustrated. Also for example, can be easily read that the duration of the specified by the bar 32c disorder is half as long as the duration of the specified by the bar 32a disorder since the corresponding bar 32c half as wide as the

Bar 32a. The distances between the individual bars displayed 32a to 32c correspond to the intervals between the individual disorders. Since usually a comparatively long time is a time line displayed to indicate as many faults detected over a long period of time, and the disturbances in the electrical power supply network compared with the displayed by means of the timeline time will be relatively short, the fact to be displayed width of the bars is often fail smaller than the smallest of the display device by means of the evaluation data processing device to be displayed line width. Therefore, such bars are shown as shown in Figure 4 along a time line 41 merely as a line-shaped beam 42a to 42g. At the time line 41 in Figure 4 is a temporal clustering of disturbances in the bars displayed 42b to 42f clearly recognizes. can be seen in addition to the time bar 41 is a timing marker, not shown in Figure 4 before, examples example by registered times or days, then the interference shown at a glance an appropriate clock or time of day can be assigned.

In Figure 5, the method mentioned in connection with Figure 4 to indicate the width of belonging to comparatively short malfunctions bar is explained in more detail. in Figure 5. It can be seen a portion 51 of a rasterized by a plurality of pixels 52 of the display device evaluation data processing device. This may for example be the pixels of an LCD monitor. can also be seen a portion 53 of a displayed time beam. Along this time, a beam interference is bender beams to display 54 now in fact, the time duration would correspond to a width which is less than the width of a pixel 52 of the display device. There a

Beam 54 can not be displayed technically having such a small width, a bar is displayed by the display device 55 instead of the width, for example a pixel. Instead of a width of one dot BiId- a different minimum width of the beam may be dictated, for example, a minimum width of four pixels, as shown by the bar 56th

Also, Figure 6 shows a part 61 a provided with pixels 62 display device, two successive disturbances are to be displayed indicative of beams 63 and 64 by means of, wherein the time interval between the two disorders would correspond to a spatial separation of the beams along the time beam 65, the should be less than the width of a pixel 62. Therefore, the two bars are displayed instead one another without spatial separation 63 and 64 with the display device, so no spacing, so that they appear on the display device as a single beam 66th

In the figures 7 and 8. display window are shown 71 and 81, respectively, which are displayed by the display device tenverarbeitungseinrichtung the evaluation DA. The display windows 71 and 81 each show a time line 72 and 82, respectively, are illustrated along which disturbances indicative beams. The two bars 73 and 74 shown indicate a temporal distance between the corresponding disturbances out of the less according to the explanation of Figure 6 below displayable by the display device spatial distance, that is, at a time interval of a spatial distance of would correspond to less than a pixel. Therefore, the two beams are shown los distance 73 and 74 adjacent to each other and appear in principle as a single broader beam.

To enable the operating personnel of the electrical power supply network apart holding the purpose associated disorders, it is provided that an additional text box appears 76 or 86 wherein positioning a display element 75, for example a mouse pointer on one of the beams 73 and 74 that the marks the beginning of the fault represented by the respective beams. Thus, according to Figure 7, the display element 75 on the left-side bar 73 positioned itself and with the text box 76 of the start of the direction indicated by the bars 73 indicate a malfunction. This is, for example, the time stamp of the first digital data value of the recorded during the fault record. In Figure 8, the display element 75 is positioned on the right-side bar 74 and a line of text 86 with the beginning of the direction indicated by the bar 74 failure is shown.

Of course, the display text fields at positioned on a bar graph element can be carried out not only in continuously adjoining bar, but also in individual bars displayed.

On the basis of figures 9 and 10, a magnification function is to be explained (zoom function) for displaying the extending along the timeline bar below. Positions the operating personnel of the electrical power supply system, a display element, for example on a no spacing adjacent a plurality of beams and actuates an enter key of the evaluation data processing device (such as a mouse button or a selected key on a keyboard), a magnification of the displayed bar in accordance with figure is reached. 9 The display according to figure 9 are ER- after positioning of the display element on four without spacing adjacent beams and the simultaneous activation of a key. In this way, the time scale of the time line 91 in Figure 9 is modified to, in principle, that now the previously nor any distance next to each other lying beams 92a, 92b, 92c, 92d can be displayed now spaced. In other words, this means that the overall in Figure 9 specified time duration is now significantly less by the time beam 91 than before activation of the enlargement function specified total time duration.

however, positions the operating personnel, the display element on a single bar and activates an input key, the time scale of the time ray 101 is adapted now so widely according to Figure 10 in that the respective data record of the selected fault can be shown as a time course of 102 digital data values , This, so to speak, the highest magnification in the display at the interference indicating beams.

In previous versions was always assumed that in the display windows each a single timeline for a single measurement channel is displayed. Are as initially explained, detects a plurality of measuring channels simultaneously, so multiple time lines for each of these measurement channels can be arranged in a display window. The presentation of each bar along the time lines made according to the previously described method.

Claims

claims
1. A method for displaying a disturbance at one measuring point (12a, 12b, 12c) supply network in an electric Energieversor- (11) indicative of the data set to be executed in the following steps: (a) at the measuring point 12a, 12b, 12c) in the electrical power supply network (11) are measured values ​​which describe the state of the electrical power supply network (11), detected and converted into digital measured data; b) the digital measurement data are checked to see whether they indicate a fault in the electrical power supply network (11); c) in case of a fault present the digital measurement data generated during the duration of the interference (as a disturbance of the electrical power supply system 11) will be stored bender data set; d) the data is sent (to an evaluation data processing device 18), and e) the data is stored (by the evaluation data processing device 18) and extending by means of a display device as if along a timeline (31) bar (32a, 32b, 32c) shown, wherein the width of the beam (32a, 32b, 32c) of the duration of the disturbance in the electrical energy gieversorgungsnetz (11).
2. The method of claim 1, wherein steps a), b) and c) within a single (at the measuring point z. B. 12c) arranged field device (z. B. 13c) are carried out.
3. The method of claim 1, wherein steps a) and c) (within a first field device z. B. 23c) are performed and step b) within a second field device (z. B. 24c) is performed, wherein upon detection of a fault in the power grid (11) through the second field device (24c) is outputted a start signal from the second field device (24c) to the first field device (23c), which in the first field device (23c) storing the digital data in accordance with step c) triggers.
4. A method according to any of the preceding claims, characterized characterized that
- means of the evaluation data processing device (18) is carried out a check as to whether the width of the to be displayed beam (54) would be the display device is less than or equal to the width of a pixel (52), and in this case than the indicated width of the beam the width of a image point (52) or the width of a predetermined number of adjacent pixels (52) is selected.
5. The method according to any one of the preceding claims, characterized in that
- along the same time line (11) a plurality of respective individual disturbances in the electrical power supply network indicating bars (32a, 32b, 32c) are shown, with the distance between two consecutive beams (e.g., 32a, 32b.) The time interval between the respective specified disorders correspond.
6. A method according to claim 5, characterized, in that
- is carried out, a check means of the evaluation data processing device (18) whether the to be displayed distance between two adjacent beams (63,64) would be the display device is less than or equal to the width of a pixel (62) and the adjacent bar is displayed in this case without spacing adjacent to each other become.
7. The method according to any one of the preceding claims, characterized in that
- on the display device, a means of an input device of the analysis data processing means (18) on the display device positionable display element (75) is presented and
- a positioned at on a beam (. Eg 73) display element (75) is displayed by the display means additionally indicative of the temporal onset of the disorder text field (e.g., 76th).
8. The method according to claim 7, characterized in that
- at a positioned on a bar display element (74) and simultaneous activation of an input key of the evaluation data processing device (18) either
- in the event of a single failure bar indicating means of the display device a time profile (102) of the digital measurement data of the respective data set is displayed or - indicating, in the case of in each case a fault distance los adjoining beam by means of the display device, another time line (91) with is displayed such modified scaling that can be displayed on the other timeline, the individual beams (92a, 92b, 92c, 92d) are spaced apart.
9. The method according to any one of the preceding claims, characterized in that
- (11) the state of the electrical power supply system are described measured values ​​measured voltage values, current values, frequency measurement values ​​and / or measured values ​​derived therefrom.
PCT/DE2006/000565 2006-03-27 2006-03-27 Method for displaying a dataset defining a fault in an electrical power supply network WO2007110004A1 (en)

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ANONYMUS: "Systemprogramm OSCOP P: Power Quality, Katalog SR 10.1.3.2004"[Online] 15. April 2004 (2004-04-15), Seiten DECKBLATT, 1-14, XP002411234 Gefunden im Internet: URL:http://www.powerquality.de/pq_da/Daten /OSCOP_P/Katalog/Katalog_OSCOP_P_DE_sr10_1 _3_vom_05_04.pdf> [gefunden am 2006-12-08] *
RONG-CENG LEOU ET AL: "A web-based power quality monitoring system" 2001 IEEE POWER ENGINEERING SOCIETY. SUMMER MEETING. CONFERENCE PROCEEDINGS. VANCOUVER, CANADA, JULY 15 - 19, 2001, IEEE POWER ENGINEERING SOCIETY, NEW YORK, NY : IEEE, US, Bd. VOL. 2 OF 3, 15. Juli 2001 (2001-07-15), Seiten 1504-1508, XP010567971 ISBN: 0-7803-7173-9 *

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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
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 (en) * 2014-12-12 2016-06-16 A. Eberle Gmbh & Co. Kg Measuring and/or test device and method for measuring and/or estimating the quality and/or stability of power supply networks

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