CN202535076U

CN202535076U - Controllable electric reactor and reactive power compensation device comprising same

Info

Publication number: CN202535076U
Application number: CN2011203599929U
Authority: CN
Inventors: 朱学林
Original assignee: JIANGSU HUAFENG ELECTRICAL APPLIANCE CONTROL EQUIPMENT CO Ltd
Current assignee: JIANGSU HUAFENG ELECTRICAL APPLIANCE CONTROL EQUIPMENT CO Ltd
Priority date: 2011-09-23
Filing date: 2011-09-23
Publication date: 2012-11-14
Anticipated expiration: 2021-09-23

Abstract

The utility model relates to a controllable electric reactor and a reactive power compensation device comprising a same. The controllable electric reactor is characterized by comprising three capacitors which form a loop, and each capacitor is provided with a SCR (2). The reactive power compensation device comprises high-voltage cables, a second breaker (6), a third breaker (7), SCRs (2), and controllers. The reactive power compensation device is characterized by comprising the above controllable electric reactor (1). Lower pile heads of the second breaker (6) and the third breaker (7) are connected with the high-voltage cables, and the high-voltage cables connect the controllable electric reactor (1). In the controllable electric reactor (1), the SCRs (2) on the three capacitors are connected with the controllers through signal wires.

Description

A kind of controlled reactor and comprise the reactive power compensator of this controlled reactor

Technical field

This is practical to relate to a kind of controlled reactor, relates in particular to a kind of dynamic passive compensation and harmonic wave control the complete sets of equipment.

Background technology

The main device of reactive power compensation before has: capacitor grouping automatic switching, the automatic grouping switching device of TSC type, voltage-regulating technique, TCR type SVC dynamic compensating device.

Wherein capacitor grouping automatic switching is to utilize vacuum switch or contactor, grouping automatic switching shunt capacitor; The switching of vacuum switch and contactor formula shoves greatly, and switch life is low, can not realize the continuous stepless adjusting.The automatic grouping switching device of TSC type is to utilize series thyristor to replace vacuum contactor as fling-cut switch; Electric current to flowing through capacitor is regulated; Easy mistake mends and owes to mend, voltage fluctuates easily; It is breakdown easily that thyristor is connected on high tension loop, and the auxiliary cooling device maintenance of the big needs of thyristor caloric value is big.Voltage-regulating technique is the adjusting that utilizes the voltage realization capacitive reactive power at on-load tap-changing transformer regulating capacitor two ends; Change the capacitor terminal voltage according to Q=2 ∏ fCU2 and regulate idle output; Realize that compensation is the terrible grouping automatic switching of refinement automatically, can not realize that continuous stepless regulates, transformer is shoved to be impacted harmonic and influences; Reliability decrease can't realize filtering even possibly cause the danger of resonance.TCR type dynamic compensating device is through thyristor control Controlled Reactor size of current; Thereby it is idle to change the electric controller perception; Realize the dynamic adjustable of reactive power, but reliability is low, capital expenditure big, the later maintenance expense is high, harmonic pollution is big and the palpus staff on duty.

The utility model content

To practical a kind of dry magnet controlled reactor of dynamic passive compensation, filtering and voltage-regulation more reliably, i.e. dry magnet controlled reactor (MCR) the type SVC (being called for short MSVC) of providing of above not unabridged version.

A kind of controlled reactor is characterized in that: said controlled reactor is made up of 3 capacitors, and 3 capacitors are formed a loop, all contain controllable silicon on each capacitor.

A kind of reactive power compensator; Comprise high-tension cable, second circuit breaker 6, the 3rd circuit breaker 7, controllable silicon 2, controller; It is characterized in that: also contain described controlled reactor 1; Connect high-tension cable 8 by pile crown under the circuit breaker, connect controlled reactor from high-tension cable, the controllable silicon in the controlled reactor on 3 capacitors links to each other with controller through holding wire.

For better functional effect, link to each other with capacitor 4, reactor 3 through first circuit breaker 5.

The utility model adopts circuit breaker switching magnet controlled reactor, and protection reactor prevents that it from breaking down in that circuit is in service.Can be automatically change compensation capacity according to the variation of system's reactive power, thus realize reactance value continuously, Fast Adjustable.Can be applicable to various operating modes, be particularly useful for fast-changing load at harmonic pollution.This device has that output harmonic wave is little, low in energy consumption, non-maintaining, simple in structure, reliability is high, cheap, remarkable advantage such as floor space is little; Its inside is full static structure; Movement-less part, functional reliability is high, is desirable dynamic passive compensation, filtering and voltage adjuster.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Embodiment

A kind of controlled reactor is made up of 3 capacitors, and 3 capacitors are formed a loop, all contain controllable silicon on each capacitor.

A kind of reactive power compensator; Comprise high-tension cable, second circuit breaker 6, the 3rd circuit breaker 7, controllable silicon 2, controller; It is characterized in that: also contain described controlled reactor; Connect high-tension cable 8 by pile crown under the circuit breaker, connect controlled reactor 1 from high-tension cable, the controllable silicon in the controlled reactor on 3 capacitors links to each other with controller through holding wire.

Controller is used for accomplishing the collection of the capacitive and the reactive current data of perception and sends signal in good time and give controllable silicon, makes capacitor work, when overtension, is used for balanced voltage, makes voltage drop to certain value, when voltage just often, controlled reactor is not worked.

For can be in undertension, voltage that can undercompensation, this reactive power compensator that contains described controlled reactor also connects electric capacity and reactors through first circuit breaker 5; When first circuit breaker 5 was connected, the voltage of capacitance compensation was certain, when controller collects the voltage of compensation when too much; Signal to controllable silicon 2; The capacitor of controllable silicon 2 is started working, share some voltages, make the voltage of system be stabilized in suitable value.

Second circuit breaker 6 and the 3rd circuit breaker 7 are to do the protection effect in order to protect controlled reactor 1 to be in operation to break down.

In this compensation arrangement, the controlled reactor locellus is installed.

The utility model adopts circuit breaker switching controlled reactor, and protection reactor prevents that it from breaking down in that circuit is in service.Can be automatically change compensation capacity according to the variation of system's reactive power, thus realize reactance value continuously, Fast Adjustable.Can be applicable to various operating modes, be particularly useful for fast-changing load at harmonic pollution.This device has that output harmonic wave is little, low in energy consumption, non-maintaining, simple in structure, reliability is high, cheap, remarkable advantage such as floor space is little; Its inside is full static structure; Movement-less part, functional reliability is high, is desirable dynamic passive compensation, filtering and voltage adjuster.

Controlled reactor does not need external power supply, realizes automatic control by the inside winding of reactor fully.Therefore the angle of flow through the control silicon controlled crystal brake pipe is controlled automatically, can realize continuously adjustablely, and the transit time from the minimum capacity to the heap(ed) capacity is very short, therefore can really realize flexible compensation.Non-maintaining after putting into operation, need not staff on duty.Product is the resin casting dry-type product, can go deep into load center, and can use in skyscraper, dense population areas, and protection is simple with maintenance.Owing to be the dry type product, need not need oil groove and fireproofing installation, thereby the disposable building of product and long-time maintenance cost can reduce significantly as the oil immersion product.

Adopt the low-voltage SCR control, simple in structure, floor space is little; Infrastructure investment greatly reduces, and need not to bear high voltage, big electric current when normally moving, and adopts natural cooling to get final product; Can realize non-maintainingly after putting into operation, self active loss is low, is merely 30% of TCR; The apparatus cost of same capability is much smaller than TCR, depresses in same electrical and can improve 30% transmission line capability, reduces the loss of transmission line.

MCR utilizes the low pressure controllable silicon as adjusting device, does not need connection in series-parallel, bears voltage and has only 1%～2% of total voltage, and controllable silicon is not easy breakdown, stable and reliable operation.Even controllable silicon or diode damage, magnet controlled reactor also only is equivalent to a unloaded transformer, does not influence the operation of other devices of system.

The reaction speed of device is 20ms～300ms.

Though the utility model with preferred embodiment openly as above; But they are not to be used for limiting the utility model; Anyly be familiar with this art; In spirit that does not break away from the utility model and scope, certainly when can doing various variations or retouching, so being as the criterion of should being defined with the application's claim protection range of the protection range of the utility model.

Claims

1. controlled reactor, it is characterized in that: said controlled reactor is made up of 3 capacitors, and 3 capacitors are formed a loop, all contain controllable silicon on each capacitor.

2. reactive power compensator; Comprise high-tension cable (8), second circuit breaker (6), the 3rd circuit breaker (7), controllable silicon (2), controller; It is characterized in that: also contain controlled reactor as claimed in claim 1 (1); By second circuit breaker (6) and the 3rd circuit breaker (7) down pile crown is connected high-tension cable (8), connect controlled reactor (1) from high-tension cable (8), the controllable silicon (2) in the controlled reactor (1) on 3 capacitors passes through holding wire and links to each other with controller.

3. reactive power compensator as claimed in claim 2 is characterized in that: link to each other with capacitor (4), reactor (3) through first circuit breaker (5).

4. like claim 2 or 3 described reactive power compensators, it is characterized in that: controlled reactor (1) locellus is installed.