CN205283117U

CN205283117U - Current limiting reactor energy -saving control device

Info

Publication number: CN205283117U
Application number: CN201521065297.6U
Authority: CN
Inventors: 李俭华; 周伟
Original assignee: Anhui Hekai Electric Technology Co Ltd
Current assignee: Anhui Hekai Electric Technology Co Ltd
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2016-06-01
Anticipated expiration: 2025-12-16

Abstract

The utility model provides a current limiting reactor energy -saving control device, is including the high -fidelity electric current collector and quick vacuum circuit breaker of series connection at inlet wire end and leading -out terminal to and be used for controlling high -fidelity electric current collector and quick vacuum circuit breaker's aplit -second control ware, its characterized in that, connect in parallel and have current limiting reactor in quick vacuum circuit breaker both ends, in the normal operating duration more than the electric power system 95%, with the current limiting reactor short circuit, avoid negative effects such as energy consumption that the anti long -time running of limit brought, pressure drop, electromagnetic interference, when the short circuit takes place, utilize the 2ms protection output of aplit -second control ware and high speed circuit -breaker's 5ms switch separating brake performance, can make current limiting reactor input coefficient in first half -wave 10ms, guarantee within safely can the scope of cut -offfing, to reach current limiting reactor's current -limiting effect, protection system safety just limiting fault current it before protection output is measured to the fault point circuit breaker.

Description

Current-limiting reactor energy-saving control device

Technical field

This utility model relates to electrical equipment technical field, is specifically related to a kind of current-limiting reactor energy-saving control device.

Background technology

In current power system, the mode of ubiquitous a kind of limiting short-circuit current is that current-limiting reactor is connected in series to the medium-term and long-term operation in the loop needing limiting short-circuit current, thus reaching to be restricted to by short circuit current when being short-circuited fault in the scope that safety can be cut-off, thus ensureing the safe operation of power system.

Occurring in of this mode is permitted to have many years ago its advance, but in today that whole world promotion energy-saving and emission-reduction, power supply quality requirement are greatly promoted, this mode occurs in that more drawback: 1. reactor is as power consumption components and parts, it is connected in power system for a long time and runs, huge energy loss can be caused, namely the waste of energy resources; 2. reactor is perception components and parts, is connected on the reduction that can cause terminal voltage in power system for a long time, affects the power quality of line end; 3. inductance element can produce bigger induction field when through-flow for a long time, the microcomputer complex protection of surrounding, Background communication machine etc. can be controlled equipment and produce the impact of electromagnetic interference; 4. the civil engineering structure of human body and steel and concrete structure all can be brought adverse influence by electromagnetic radiation and low-frequency resonance.

Utility model content

Technical problem to be solved in the utility model is in that to provide a kind of practical, the current-limiting reactor energy-saving control device of simple in construction, for when short trouble occurs, rapidly current-limiting reactor being put into operation, and limiting short-circuit current.

Technical problem to be solved in the utility model realizes by the following technical solutions:

A kind of current-limiting reactor energy-saving control device, including the high-fidelity current collector and the Fast Speed Vacuum Circuit Breaker that are connected on end of incoming cables and leading-out terminal, and for controlling the fast controller of high-fidelity current collector and Fast Speed Vacuum Circuit Breaker, it is characterized in that, described Fast Speed Vacuum Circuit Breaker two ends are parallel with current-limiting reactor; In the uptime of power system more than 95%, by current-limiting reactor short circuit, evade limit anti-longtime running to bring energy consumption, pressure drop, the negative effect such as electromagnetic interference; When short circuit occurs; the 2ms protection output of fast controller and the 5ms of fast chopper is utilized to switch separating brake performance; current-limiting reactor input coefficient in first half-wave 10ms can be made; ensure just can be cut-off within scope to its safety by fault current limitation before trouble point chopper measures protection output; reach the current limitation effect of current-limiting reactor, protect security of system.

Described high-fidelity current collector is made up of CT or Luo-coil; This utility model device can be the form of switch cubicle can also be other any forms facilitating in-site installation to run.

This device has the following characteristics that

(1) by the monitoring to the system power flowing through device, after control system judges the minimum working current value that current amplitude exceedes setting, controller is through the algorithm of the specific function of design, calculate the zero crossing of short circuit current angle, amplitude and twice accurately, then time delay a period of time sends separating brake order before electric current first time zero crossing, controls device separating brake;

(2) mode that, switching winding involutory by IGBT control storage capacitor discharges, produces driving force and pulls straight-bar to do upper and lower motion, and utilize the permanent magnet bistable state maintenance effect to armature, completes the quick splitting or integrating lock operation of chopper;

(3) the major loop part utilizing device is connected in parallel with current-limiting reactor, by current-limiting reactor short circuit when properly functioning. When system is short-circuited fault, first half-wave will switch separating brake, make current-limiting reactor seal in system circuit, reach metering function, it is ensured that trouble point chopper is when disjunction, and fault current has had been limited to the scope that safety can be cut-off.

The beneficial effects of the utility model are: this utility model is reasonable in design, quick action, long service life, connecting-disconnecting function are strong, effectively avoid the huge loss problem that current-limiting reactor in power system brings, decrease economic loss to enterprise and improve economic benefit, also provide a power-assisted for society's sustainable development that economizes on resources.

Accompanying drawing explanation

Fig. 1 is this utility model principle wiring schematic diagram.

Detailed description of the invention

For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, this utility model is expanded on further.

As shown in Figure 1, a kind of current-limiting reactor energy-saving control device, including the high-fidelity current collector 3 and the Fast Speed Vacuum Circuit Breaker 4 that are connected on end of incoming cables 1 and leading-out terminal 2, and for controlling the fast controller 5 of high-fidelity current collector 3 and Fast Speed Vacuum Circuit Breaker 4, Fast Speed Vacuum Circuit Breaker 4 two ends are parallel with current-limiting reactor 6. The occasion that in every power system, current limiting reactor runs, all can use this utility model.

When system is properly functioning, due to system need not the function of current-limiting reactor, hence with Fast Speed Vacuum Circuit Breaker by current-limiting reactor short circuit, thus avoiding the problems such as electric energy loss that current-limiting reactor longtime running brings, reach energy-saving effect.

When system is short-circuited fault, fast controller controls vacuum circuit breaker separating brake in first half-wave (10ms), by current-limiting reactor input coefficient, thus the current limliting realizing current-limiting reactor is worth; Owing to ordinary tap cabinet commonly used in power system cut-offs the time of short trouble at 60ms��100ms; so this utility model can put into current-limiting reactor in first half-wave 10ms; the not breakdown judge of other ordinary tap cabinets and protection act in influential system completely, the protected effect connected for a long time in the loop with current-limiting reactor is the same.

Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described. Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model. This utility model claims scope and is defined by appending claims and equivalent thereof.

Claims

1. a current-limiting reactor energy-saving control device, including the high-fidelity current collector and the Fast Speed Vacuum Circuit Breaker that are connected on end of incoming cables and leading-out terminal, and for controlling the fast controller of high-fidelity current collector and Fast Speed Vacuum Circuit Breaker, it is characterized in that, described Fast Speed Vacuum Circuit Breaker two ends are parallel with current-limiting reactor.

2. current-limiting reactor energy-saving control device according to claim 1, it is characterised in that: described high-fidelity current collector is made up of CT or Luo-coil.