RU45055U1 - LOCAL RESERVATION ITEM OF LINEAR CONSUMERS (KRUN-PMR) - Google Patents

Abstract

The point of local reservation of power supply to linear consumers (KRUN-PMR) refers to the field of electric power and electrical engineering, namely, devices for supplying and distributing electric energy and can be used to power control and protect responsible consumers. To increase functionality, improve performance, reliability of servicing linear consumers and safety equipment, it is grounded and consists of at least two cable boxes, each of which is located on the platform and contains a linear consumer , complete switchgear (KRUN-SVL) with a high-voltage compartment, in which there is an electric switch, current and voltage transformers, emergency vehicle devices Atiki a relaying device inside the high compartment is an additional voltage measuring transformer and an additional current transformer with a zero sequence disconnectors internal settings established on different sides breaker, provided with a mechanical interlock with grounding knives executed.

Description

The inventive utility model relates to the field of electric power and electrical engineering, in particular to devices for supplying and distributing electric energy and can be used to power control and protect responsible consumers.

A device for automatic backup of a power source is known (See patent No. 2006134, IPC N 02 J 5/14, publ. 15.01.94) containing three undervoltage relays with opening and closing contacts, a compensating capacitor and a three-phase asynchronous motor, and the minimum relay the voltage of each phase is connected in series with the NC contact of the adjacent phase relay, the compensating capacitor is included in the first faulty phase between the power sources and the simultaneous phase of the motor in series with the closing contact E undervoltage relay undamaged phase and the second phase between the power source and the respective motor phase introduced by the phase-shifting inductor connected in series with said contacts.

A disadvantage of the known device is the low functionality, reliability and safety.

This disadvantage is due to the design features of the known device and the fact that the functioning of the known device is possible only in the secondary circuit.

A complete switchgear is also known (see, for example, RF Patent No. 2123748, M.cl. H2O 5/00, 7/00, 11/00, 13/00 publ. 12/20/98, bull. No. 35), containing housing busbars, connection equipment - switching apparatus, lead wires, with at least one busbar system, at least one switching bus apparatus, at least lead wires of one connection installed at different levels relative to each other, while one busbar system, equipment of one connection

installed in the following sequence, from bottom to top: busbars, switching device, output conductors; the device may also contain in the housing one busbar system, equipment of two connections installed in the following sequence from the bottom up: output conductors of the first connection, switching device of the second connection, output conductors of the second connection.

A disadvantage of the known complete switchgear is low functional and operational capabilities, reliability, durability and safety precautions.

Closest to the claimed utility model is a complete switchgear (See RF Patent No. 2189680,), made in the form of paired panels with busbars, switching equipment, consisting of switching machines, with a control system, inputs and outputs, and, in the control system the switching equipment additionally includes a telemechanics system, each of the switching machines is equipped with independent releases for remote shutdown and an independent switching coil for remote switching on, and current-carrying parts of busbars are equipped with thermal indicators, and the control system of the switching equipment also includes a residual current device, a motor protection device, a microprocessor protection relay, a microprocessor load programmer, surge arresters equipped with a trip recorder, a controllable magnetoelectric contact, a telemechanics system contains blocks remote control, telealarm, telemetry, which go to the consumer telemechanics system I am using a telemechanics unit and communication channels, and the telemetry unit is equipped with special magneto-electric converters, the residual current circuit breaker is equipped with a differential unit connected to a switching automaton, surge arresters are installed on busbars and equipped with a trip recorder, and the thermal indicators are made in the form of color thermal film.

A disadvantage of the known complete switchgear is low functional and operational capabilities and reliability.

These disadvantages are due to the design features of the well-known complete switchgear.

A distribution system for power line sectioning is also known (see patent No. 2170485, MKI N 02 B 13/00, published July 10, 2001), including, including a complete outdoor switchgear containing a high-voltage compartment in which electric vacuum circuit-breaker, measuring current transformers in phases A and C, voltage measuring transformers and control compartment with emergency control devices in the form of automatic restart and automatic of reserve, relay overcurrent protection of a two-stage directional heating device, characterized in that the high-voltage equipment and control compartments are located on the platform in one block box, inside the high-voltage compartment on both sides of the vacuum circuit breaker there are two voltage measuring transformers in three-phase design with an additional winding zero sequence voltage on the low side, additional measuring transformer of zero sequence current with times indoor switches installed on different sides of the vacuum circuit breaker, equipped with a mechanical interlock with grounding knives and a locking device for the entrance door to the high-voltage compartment and a vacuum circuit breaker drive, sets of valve surge arresters equipped with counters and trip indicators associated with the telemechanics system located in the control compartment equipped with a guaranteed power supply connected to the cable by means of an introductory machine with in the high-voltage compartment, with a dry power transformer, a heating panel with automatic shutdown, a microprocessor-based relay protection and automation device, it also includes a communications corridor, control and control blocks on the pipeline valve nodes connected to the control compartment via a communication line, and the high-voltage compartment is equipped with an automatic a pressure-relief valve equipped with signal light equipment mounted on the roof of the block box, an automatic pressure-relief valve in

in the form of a frame located in the floor of the high-voltage compartment with a rotary blade, connected by means of a limit switch with signal light equipment, the signal light equipment is made in the form of a flashing orange protected lamp grid powered by block contacts of the control box input automaton, fixing systems are included in the set of telemechanics places of a short circuit to ground of the power transmission line phase and fixing of places of a short circuit between the phases of telecontrol, tele-signaling and emergency lemechanics, overvoltage protection, actuation of an automatic valve that relieves air pressure during short circuits, unauthorized opening of doors, communication line the base of the block box is made with a pit, the block box is made with a pallet A disadvantage of the known complete switchgear is its low functional and operational capabilities and reliability .

These disadvantages are due to the design features of the well-known complete switchgear.

The technical result provided by this utility model is to increase functionality, improve performance, reliability of servicing linear consumers and safety;

The technical result achieved is achieved by the fact that in the well-known local backup power supply point for linear consumers (KRUN - PMR), which includes a complete switchgear located on the platform in the block box with a high-voltage compartment, in which there is an electric switch, current and voltage transformers, emergency automation devices in the form of a relay protection device, an additional voltage measuring transformer is located inside the high-voltage compartment and up to an optional zero sequence current transformer with indoor disconnectors installed on different sides of the circuit breaker, equipped with a mechanical interlock with grounding knives, according to a utility model, it is grounded and consists of at least two cable boxes connected by cable, each of which is located on the platform and contains a complete switchgear associated with a linear consumer

(KRUN-SVL) with a high-voltage compartment, in which there is an electric drive circuit breaker, current and voltage transformers, emergency automation devices in the form of relay protection devices, an additional voltage measuring transformer and an additional zero-sequence current measuring transformer with disconnectors for indoor installation are also located inside the high-voltage compartment installed on different sides of the circuit breaker, equipped with a mechanical interlock with grounding knives, wherein mounted on platforms fixed to pile foundations or reinforced concrete slabs.

Between the distinguishing features and the achieved technical result, there is the following causal relationship.

The presence in the claimed utility model associated with power transmission lines and linear consumers with a complete switchgear (KRUN-SVL) with a high-voltage compartment, in which there is an electric circuit breaker, current and voltage transformers, emergency control devices in the form of a relay protection device located inside the high-voltage compartment, gives the possibility, when the voltage of the power transmission line disappears, to trigger the relay protection and automation device, which will not only record the fact of voltage loss through trans the romator of the first complete switchgear (KRUN-SVL) of the first block on the initial power transmission line, but also the fact of the presence of voltage on the additional (second) power transmission line through the transformer of the second complete switchgear (KRUN-SVL) of the second block. The relay protection and automation device makes it possible to turn off the switch of the first complete switchgear (KRUN-SVL. / First block and turn on the switch of the second complete switchgear (KRUN-SVL) of the second block, which will allow the consumer to continue to receive power, but from the second line of power lines thereby ensuring appropriate continuity and reliability of power supply to the consumer, increasing functionality, improving performance, reliability of service linear consumers and safety measures

According to the information available to the applicant, the set of essential features of the claimed utility model is not known from the prior art, which allows us to conclude that the invention meets the criterion of "novelty."

The set of essential features characterizing the essence of the claimed utility model can be repeatedly used in the production of such points of local reservation of power supply for linear consumers (KRUN-PMR) to obtain a technical result consisting in increasing functionality, improving performance and reliability.

The essence of the claimed utility model of the local reservation of electricity supply for linear consumers (KRUN-PMR). illustrated by the specific implementation example presented in figure 1, which schematically shows two power lines with a voltage of 6 (10) square., powering the object and figure 2 is a communication diagram of the blocks KRUN-SVL with each other by electrical connections.

The point of local reservation of power supply for linear consumers (KRUN-PMR) is made in the form of two blocks 1, and 2, installed platforms 3, 4, which, in turn, are mounted on pile foundations 5, powered from overhead power transmission lines (transmission lines) 6 and 7 voltage (10) sq. For areas with little snow cover, blocks 1 and 2 are placed on reinforced concrete slabs. Blocks 1 and 2 contain high-voltage compartments 8 and 9, respectively, each of which is equipped with disconnectors 10, 11 and 12, 13 with locks 14, 15 and 16, 17, respectively, and grounding knives 18, 19 and 20, 21, distribute electricity from two independent power sources 4 and 5 (overhead power lines with a voltage of 6 (10) sq. using switches 22 and 23. In each of blocks 1 and 2, complete switchgears 24 and 25 (KRUN-SVL) equipped with small-sized dry transformers are installed voltage 27 and 28 and dry current transformers 29 and 30, respectively, and beyond earthing devices 31. The secondary switching circuits of blocks 1 and 2 are connected to each other by a communication cable 32. A linear consumer 33 can be connected either from block 1 or from block 2. Electrical equipment is protected from switching and lightning surges by means of nonlinear surge arresters 34 and 35. The proposed point of local reservation of electricity supply for linear consumers (KRUN PMR) is equipped with all, according to electrical safety requirements, interlock devices between switching devices and doors and blocks. To protect consumers from one-sided earth faults, two zero sequence current transformers 36 and

37 in each complete switchgear. The operation of the switches 22 and 23 with the drives 38 and 39 is controlled by a relay protection device 40, 41, which automatically detects the fact of voltage loss on the power line 4 through the transformer 27 and the fact of the presence of voltage on the power line 5 through the transformer 28.

Point local backup power supply to linear consumers is as follows.

Supply voltage to the consumer 33 is carried out from the power line 6 to the switchgear KRUN - SVL 24 located in the high-voltage compartment 8 of block 1, through the disconnector 10, switch 22 and disconnector 11. In this case, KRUN-SVL located in the high-voltage compartment 9 in the second block 2 is turned off, and the disconnectors 12 and 13 and the switch 23 are disconnected. When the voltage disappears on the power transmission line 6, the relay protection and automation device 40 is activated, which detects the fact of voltage loss through the transformer 36 and the fact of the voltage on the power transmission line 7 through the transformer 37. The relay protection and automation device turns off the switch 22 and turns on the switch 23. The consumer 33 continues to receive power, but already from the power line 7, thereby ensuring the corresponding continuity and reliability of power supply to the consumer 33.

The proposed complete switchgear has high functionality, performance, reliability, allows to achieve versatility while increasing the protection zone of the object, improves safety.

Claims (3)

1. The local backup power supply point for linear consumers (KRUN - PMR), which includes a complete switchgear located on the platform in the block box with a high-voltage compartment, in which there is an electric circuit breaker, current and voltage transformers, emergency control devices in the form of a relay device protection, an additional voltage measuring transformer and an additional zero-sequence current measuring transformer are located inside the high-voltage compartment with indoor disconnectors installed on different sides of the circuit breaker, equipped with a mechanical interlock with grounding knives, characterized in that it is grounded and consists of at least two block boxes connected by cable, each of which is located on the platform and contains a switchgear associated with a linear consumer (KRUN-SVL) with a high-voltage compartment, in which there is an electric switch, current and voltage transformers, devices tivoavariynoy automation in a relaying device inside the high compartment is an additional voltage transformer and an additional current transformer with a zero sequence disconnectors internal settings established on different sides breaker, provided with a mechanical interlock with grounding knives. 2. The item according to claim 1, characterized in that it is installed on platforms mounted on pile foundations. 3. The item according to claim 1, characterized in that it is installed on reinforced concrete slabs.