CN203151110U

CN203151110U - A reactive power compensator of surge protection

Info

Publication number: CN203151110U
Application number: CN 201320139625
Authority: CN
Inventors: 陆方昆; 伍刚
Original assignee: GUIZHOU TIANNENG POWER HI-TECH Co Ltd
Current assignee: GUIZHOU TIANNENG POWER HI-TECH Co Ltd
Priority date: 2013-03-25
Filing date: 2013-03-25
Publication date: 2013-08-21
Anticipated expiration: 2023-03-25

Abstract

The utility model relates to the field of reactive power compensation and discloses a reactive power compensator of surge protection. The reactive power compensator comprises a power supply module, a control module, and a compensation module. The power supply module is connected with the control module. The compensation module is electrically connected with the control module. The control module comprises a reactive power compensation controller, a current transformer, a composite switch, and a micro breaker. The reactive power compensation controller is connected with the current transformer, the composite switch, and the micro breaker. The reactive power compensator of surge protection analyzes and compares data acquired by the current transformer by adding the reactive power compensation controller and forms a feedback loop circuit by adjusting the composite switch and the micro breaker. Therefore, while response speed is guaranteed, the surge protection efficiency of the reactive power compensator is increased and the safety factor of the reactive power compensator is substantially increased. In addition, the compensation precision and increment of load capacity of the reactive power compensator are increased while surge protection is adjusted.

Description

The reactive power compensator of surging and protecting

Technical field

The utility model relates to the reactive power compensation field, the reactive power compensator of the protection of particularly surging.

Background technology

Compensation precision embodies the effectively efficient of compensation in the reactive power compensation, compensation precision is low can be caused undercompensation or cross the phenomenon of mending, and can consume a large amount of power in this process, reduces the effectively efficient of compensation, under the more stable situation of load, its influence is especially obvious; And can increase capacity load; Reactive power compensator of the prior art generally adopts the protector of the surging protection of surging, and improving the fail safe of reactive power compensator, but its protection limit is less, demands occurring a kind of protection efficient height and high reactive power compensator of compensation precision of surging urgently.

The utility model content

The reactive power compensator that the reactive power compensator of the protection of surging that the utility model provides is a kind of coefficient of safety height, compensation precision is high.

The technical solution of the utility model is achieved in that the reactive power compensator of the protection of surging, and comprises power module, control module and compensating module, described power module link control module, and compensating module and control module electrically connect; Described control module comprises idle compensating control, current transformer, combination switch and miniature circuit breaker, and described idle compensating control connects current transformer, combination switch and miniature circuit breaker respectively.

Further, described control module also comprises the protector of surging, the described protector of the surging current transformer that is connected in series.

Optimally, described compensating module comprises capacitor, and described capacitor is self healing capacitor.

Described power module comprises supply unit, circuit breaker and lightning arrester, and described supply unit and circuit breaker, lightning arrester electrically connect.

Described power module is provided with the primary connection terminal, and described control module is provided with the secondary connection terminal.

Described combination switch is thyristor.

Optimally, described circuit breaker is mold cased circuit breaker.

The reactive power compensator of the protection of surging that the utility model provides, by idle compensating control is set, the data that current transformer obtains are analyzed, contrasted, regulate combination switch and miniature circuit breaker, form feedback loop, when guaranteeing reaction speed, improve the protection efficient of surging of reactive power compensator, improve the coefficient of safety of reactive power compensator greatly; When protection is surged in adjusting, improve compensation precision and the capacity load recruitment of reactive power compensator.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1: the utility model module diagram;

Among the figure: 100, power module; 110, primary connection terminal; 120, supply unit; 130, mold cased circuit breaker; 140, lightning arrester; 200, control module; 210, secondary connection terminal; 220, idle compensating control; 230, the protector of surging; 240, current transformer; 250, combination switch; 260, miniature circuit breaker; 300, self healing capacitor.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.

The reactive power compensator of the protection of surging that the utility model provides, shown in Fig. 1 the utility model module diagram, comprise power module 100, control module 200 and compensating module, described power module 100 link control modules 200, compensating module and control module 200 electrically connect; Described control module 200 comprises idle compensating control 220, current transformer 240, combination switch 250 and miniature circuit breaker 260, and described idle compensating control 220 connects current transformer 240, combination switch 250 and miniature circuit breaker 260 respectively.

Further, described control module 200 also comprises the protector 230 of surging, the described protector 230 of the surging current transformer 240 that is connected in series.

Optimally, described compensating module comprises capacitor, and described capacitor is self healing capacitor 300.

Described power module 100 comprises supply unit 120, circuit breaker and lightning arrester 140, and described supply unit 120 electrically connects with circuit breaker, lightning arrester 140.

Described power module 100 is provided with primary connection terminal 110, and described control module 200 is provided with secondary connection terminal 210.

Described combination switch 250 is thyristor.

Optimally, described circuit breaker is mold cased circuit breaker 130.

The feedback loop that the utility model is formed by idle compensating control 220, current transformer 240, combination switch 250 and miniature circuit breaker 260 in the control module 200 adopts the dynamic passive compensation mode, is fit to the fluctuation of load than under the situation more frequently; And the utility model also has the function that branch is mended, and does good compensation can for some unbalanced loads; It is faster that reaction speed of the present utility model is compared the static reactive power compensation mode; The situation bigger in some fluctuations of load can compensate targetedly; The compensation precision height, and can increase capacity load.

Power module 100 is realized the power supply of control module 200 and compensating module and once protection, and the whole switching of reactive-load compensation equipment is played main effect.

Compensating module is according to the loading condiction parallel connection or be connected in series in control module 200.

Control module 200 is mainly sampled by 240 pairs of power network currents of current transformer and is imported idle compensating control 220, the electric current that 220 pairs of current transformers 240 of idle compensating control collect is analyzed, is stored, and contrast setup parameter value output switching signal, and the switching signal is transmitted to combination switch 250, auxiliary contact is closed earlier in the switching process, the resistance of connecting with auxiliary contact makes capacitor precharge, and main contact is closed more then, thus shoving when the limiting capacitance device drops into; Combination switch 250 is exactly that thyristor is realized that voltage zero-cross drops into and the current over-zero excision.

Compensating module mainly is made of self healing capacitor 300, and self healing capacitor adopts the single-layer polypropylene film as medium, surperficial evaporation the thin metal of one deck as conductive electrode.When applying too high voltage, polypropylene screen electricity weakness is breakdown, and the breakdown point impedance obviously reduces, the current density that flows through sharply increases, and makes metallization coating produce high heat, and the metallic conductor around the breakdown point evaporates loss rapidly, form coat of metal clear area, breakdown point recovers insulation automatically.

The reactive power compensator of the protection of surging that the utility model provides, by idle compensating control 220 is set, the data that current transformer 240 obtains are analyzed, contrasted, regulate combination switch 250 and miniature circuit breaker 260, form feedback loop, when guaranteeing reaction speed, improve the protection efficient of surging of reactive power compensator, improve the coefficient of safety of reactive power compensator greatly; When protection is surged in adjusting, improve compensation precision and the capacity load recruitment of reactive power compensator.

Certainly; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art should make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.

Claims

1. the reactive power compensator of surging and protecting is characterized in that: comprise power module (100), control module (200) and compensating module, and described power module (100) link control module (200), compensating module and control module (200) electrically connect; Described control module (200) comprises idle compensating control (220), current transformer (240), combination switch (250) and miniature circuit breaker (260), and described idle compensating control (220) connects current transformer (240), combination switch (250) and miniature circuit breaker (260) respectively.

2. the reactive power compensator of the protection of surging according to claim 1, it is characterized in that: described control module (200) also comprises the protector of surging (230), the described protector of surging (230) current transformer (240) that is connected in series.

According to claim 1 surge the protection reactive power compensator, it is characterized in that: described compensating module comprises capacitor, described capacitor is self healing capacitor (300).

According to claim 1 surge the protection reactive power compensator; it is characterized in that: described power module (100) comprises supply unit (120), circuit breaker and lightning arrester (140), and described supply unit (120) electrically connects with circuit breaker, lightning arrester (140).

According to claim 1 surge the protection reactive power compensator, it is characterized in that: described power module (100) is provided with primary connection terminal (110), described control module (200) is provided with secondary connection terminal (210).

According to claim 1 surge the protection reactive power compensator, it is characterized in that: described combination switch (250) is thyristor.

According to claim 4 surge the protection reactive power compensator, it is characterized in that: described circuit breaker is mold cased circuit breaker (130).