DE898781C - Device for determining the fault location in electrical wiring systems - Google Patents

Description

Device for determining the location of the fault in electrical wiring systems It is sometimes desirable, when an error occurs in; an elekbo Line not only switch off the faulty line cut selectively, but to be able to determine the location of the fault as soon as possible. In the event of a fault location With the help of the line voltage and the line current, the determination of these both electrical error sizes, of course; in a very short time, because @the faulty line switched off after a short time and thus the required Measurements are then no longer available.

The invention now shows a way of eliminating the fault location dn ve, rhaltni; smäßiig easy to determine within a short time. According to the invention wind; for this purpose a polarized realm. provided with multiple anchors, those certain different distance values are assigned. From @these anchors In the event of a fault, one or more anchors leave depending on the location of the fault location their rest position and go into; their Anspxechlage, in which they i then through a Hadte device, e.g. B. a permanent magnet.

The Gege: nstan @ d, the invention is in: the drawing, for example illustrated.

The fault location indicator according to the invention according to the exemplary embodiment consists essentially of a polarized relay with a permanent magnet z and several juxtaposed legends, as tongues, exclusive anchors 2. By a current winding 3 and a voltage winding q :, diie at, the execution! Un! Bs # b # e, i, play Through the inference of the anglers, the flood becomes the anchor practically. ! in the ratio of edier voltage to current, that is, the imple! dance, changed. The coil pairs could of course also be assigned to the armatures themselves. 5 s; ind adjustable stops for the rest position of the tongues 2.

By different settings of the tongues 2 or the stops 5 can! be achieved, that .this at different! e: n difference values .of the excitation leave their calmness through the storm and tension and move on to the response position, in which s; ie are then held by the permanent magnet i. Is the required Erreger-, d! Iffereniz small, @so. can taking into account a -certain, current, dependency the difference value can be addressed as a q uotient; it results! thus a Impedance dependence.

This current dependency is avoided if ides in further development Concept of the invention all tongues; equal elinges, old, ending, and; der Einfuß en! twedier, der Voltage, voltage, coil or current coil of the individual magnetic circuits are different kept wind. As for the span: nwugisspule a greater power is available @ st ° cht,: st the change, of the influence, e, s. of the voltage coil the most advantageous, sten.

The change in the influence of the voltage coil can! In further The invention is shaped by the fact that each anchor has its own special one Voltage winding receives or, as in the embodiment, over for all Anchor according to the same coil for each anchor. magnetic shunt 6 placed by which part of the flux of this coil is destroyed. By, the former Execution, the influence of each excitation coil can be precisely predetermined by the winding and is firmly given for the calibration. At your Auisführiungsbeisplel after Each anchor can be drawn individually by changing the effectiveness of the magnetic Shunt can be set as desired.

The current and the voltage are, by a suitable device, z. B. by e! In D! Istanzrelais, selected according to the type of error. There one Retention of the measurement result by the structure of the error type display device according to the invention Without further information, special means are not necessary for this per se. However, it may be useful to measure 1-edi, gl, ich within a to allow a certain period of time. Suitable facilities, e.g. B. time-dependent switched contacts are provided.

Should @ the device according to the invention used for different routes so dst: it is necessary to sow for the shortest one to be monitored Route to be measured. By connecting this voltage path via a voltage divider can be used for distances of any length.

Claims (3)

PATENT APPEAL: i. Device for determining the location of the fault in electrical power supply systems, in which: the distance from the fault location is determined with the aid of the line current and the Lehuug voltage,! Characterized in that a polarized relay is provided with several anchors assigned to certain different distance values and that of these anchors in the event of a fault: e depending on the location of the fault, one or more anchors leave their rest position and change into the response position in which they are held by a holding device, preferably the permanent magnet provided in the polarized Riela! i: s , being held. 2. Device according to claim 1, characterized in that: that the anchors themselves! And or or their magnetic circles accordingly serve individually selectable fault location distances and @ bum @ es, s @ en are. 3. Device according to claim. i and 2, thereby marked, (that @die depends on, the conduction voltage and / or the Line, s, tram excited voltage or current coils of the armature magnet circuits accordingly The distances to the fault location are dimensioned. q .. device according to claim 3, characterized in that each magnet has a special. or current coil z, u @ is ordered! 5. Device according to claim 3, characterized in that d.ass when using a voltage coil common to all armatures each armature Magnetic shunt designed according to the individual failure modes assigned for the voltage coil ä, see below. 6. Device according to claim i and; the are followed, as indicated by the fact that they are for .the shortest to be monitored The line route is dimensioned and that the magnetic circuit is over a voltage is connected to the measuring voltage.