Method of automatically isolating a faulty section of a power line belonging to an electrical energy supply network, and arrangement for carrying out this method

Claim 3

The method as claimed in claim 1, including the step of additionally utilizing the absence of an excess current as criterion for the automatic operation of a switch.

Claim 4

The method as claimed in claim 2, wherein the absence of voltage in the power line is additionally used as criterion for the automatic operation of a switch.

Claim 5

The method as claimed in claim 1, including the step of connecting the power line to the energy source on the automatic reclose principle.

Claim 14

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current.

Claim 15

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current.

Claim 16

The arrangement as claimed in claim 9, wherein switches provided for connecting the power line to an energy source are equipped with an automatic reclose device.

Claim 17

The arrangement as claimed in claim 9, wherein the power line has a branch, a busbar on both sides of the branch being connected through switches to adjacent sections of the power line, the branch being designed to be connected to said busbar through another switch, and wherein the output signal of the associated monitoring means is delivered through a contact actuated in dependence upon the energy direction in the event of an excess current in the associated directional relay and through a line to an input of the associated switch-operating means.

Claim 18

The arrangement as claimed in claim 9, wherein the power line can only be connected to one energy source through a switch, fixed transmission channels being associated with transmitters of switches in the power line between a transmitter and the receiver associated with an adjacent switch.

Claim 19

The arrangement as claimed in claim 9, wherein the power line can be connected to more that one energy source through switches, the transmission channel of a transmitter to the reciever of an adjacent switch being reversible from case to case in dependence upon the energy direction prevailing during the excess current detected by a directional relay associated with the corresponding switch.

Claim 20

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current, and wherein in the switch-operating means a first path leads from an input at which a signal indicating the excess current is delivered to it, through a timing element and a delay element to a first input, a second path leads through an inverter to a second input of an AND-gate having an output which leads to a transistor whose collector circuit incorporates a relay through a normally-open contact of which a feed voltage is applied from a terminal to the terminal of a switch drive responsible for switching off the switch.

Claim 21

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current, and wherein in the switch-operating means a first path leads from an input at which a signal indicating the excess current is delivered to it, through a timing element and a delay element to a first input, a second path leads through an inverter to a second input of an AND-gate having an output which leads to a transistor whose collector circuit incorporates a relay through a normally-open contact of which a feed voltage is applied from a terminal to the terminal of a switch drive responsible for switching off the switch.

Claim 22

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current, and wherein the switch-operating means a first path leads from an input, at which a signal indicating the excess current is delivered to it, through a timing element and a delay element to a first input, and a second path leads through an inverter to a second input of and AND-gate, and a positive voltage can be delivered from a terminal to a third input of the aforementioned AND-gate through a series connection of three normally-closed contacts of three delayed drop-out relays whose windings are connected to the direct-current terminals of full-wave rectifiers having alternating-current terminals applied through voltage transformers to phase conductors of the power line, the output of the AND-gate leading to a transistor whose collector circuit incorporates a relay whose normally open contact applies a feed voltage from a terminal to the terminal of a switch drive responsible for switching off the switch.

Claim 23

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current, and wherein the switch-operating means a first path leads from an input, at which a signal indicating the excess current is delivered to it, through a timing element and a delay element to a first input, and a second path leads through an inverter to a second input of and AND-gate, and a positive voltage can be delivered from a terminal to a third input of the aforementioned AND-gate through a series connection of three normally-closed contacts of three delayed drop-out relays whose windings are connected to the direct-current terminals of full-wave rectifiers having alternating-current terminals applied through voltage transformers to phase conductors of the power line, the output of the AND-gate leading to a transistor whose collector circuit incorporates a relay whose normally open contact applies a feed voltage from a terminal to the terminal of a switch drive responsible for switching off the switch.

Claim 24

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into invidivual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the even of an excess current, and wherein in the switch-operating means a first path leads from an input, at which signal indicating the excess current is delivered to it, through a timing element and a delay element to a first input, a second path leads through an inverter to a second input of an AND-gate, and a positive voltage can be delivered from a terminal to a third input of the aforementioned AND-gate through a normally closed contact of a delayed drop-out relay having a winding connected to direct-current terminals of a full-wave rectifier having alternating-current terminals applied through a voltage transformer to at least one of the phase conductors of the power line, the AND-gate having an output leading to a transistor whose collector circuit incorporates a relay having a normally-open contact which applies a feed voltage from a terminal to the terminal of a switch drive responsible for switching off the switch.

Claim 25

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into invidivual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the even of an excess current, and wherein in the switch-operating means a first path leads from an input, at which signal indicating the excess current is delivered to it, through a timing element and a delay element to a first input, a second path leads through an inverter to a second input of an AND-gate, and a positive voltage can be delivered from a terminal to a third input of the aforementioned AND-gate through a normally closed contact of a delayed drop-out relay having a winding connected to direct-current terminals of a full-wave rectifier having alternating-current terminals applied through a voltage transformer to at least one of the phase conductors of the power line, the AND-gate having an output leading to a transistor whose collector circuit incorporates a relay having a normally-open contact which applies a feed voltage from a terminal to the terminal of a switch drive responsible for switching off the switch.

Claim 26

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current, and wherein the power line has a branch, the two adjacent sections being designed to be connected through switches to a busbar, and said branch being designed to be connected through another switch to the busbar, and wherein a common transmitter is associated with several switches, the output of the transmitter being coupled through a line and a voltage transformer to the busbar, and a receiver associated with at least one of said switches and being connected through a voltage transformer to an adjacent section or to the line.

Claim 27

An arrangement for automatically isolating a faulty section of a power line of an electrical supply network wherein the power line of the electrical energy supply network is adapted to be connected to at least one energy source by means of a first switch and divided into individual sections by further switches, a switch-operating means associated with each of said switches, each of said switch-operating means being controllable at the particular switch by a monitoring means operatively associated with it and its associated switch, in dependence on the current in the power line, a transmitter controllable in dependence upon the response of the monitoring means associated with each one of at least a certain number of the switches, a receiver associated with each one of at least a certain number of the switches, the receiver being connected through a control connection to the switch-operating means associated with its associated switch, each transmitter having an output, the output of each transmitter associated with a certain switch being adapted for connection through a transmission channel containing a non-faulty part of the power line to an input of a receiver associated with another switch adjacent to that switch in the power line, the signal transmission in said transmission channel being directed opposite to the direction of energy flow in the power line throughout the duration of an excess current in order to control the switch associated with the receiver in dependence upon a signal transmitted in the event of an excess current, and wherein the power line has a branch, the two adjacent sections being designed to be connected through switches to a busbar, and said branch being designed to be connected through another switch to the busbar, and wherein a common transmitter is associated with several switches, the output of the transmitter being coupled through a line and a voltage transformer to the busbar, and a receiver associated with at least one of said switches and being connected through a voltage transformer to an adjacent section or to the line.