CN202333825U

CN202333825U - Reactive automatic compensation device special for rural water conservancy drainage and irrigation equipment

Info

Publication number: CN202333825U
Application number: CN 201120502617
Authority: CN
Inventors: 刘铁峰; 张凯壮
Original assignee: HENGSHUI TAOCHENG POWER SUPPLY LLC
Current assignee: HENGSHUI TAOCHENG POWER SUPPLY LLC
Priority date: 2011-12-07
Filing date: 2011-12-07
Publication date: 2012-07-11
Anticipated expiration: 2021-12-07

Abstract

The utility model belongs to the technical field of reactive automatic compensation devices and discloses a reactive automatic compensation device special for rural water conservancy drainage and irrigation equipment. The reactive automatic compensation device special for the rural water conservancy drainage and irrigation equipment is technically characterized by comprising a control box, wherein a current transformer is arranged outside the control box; a current relay, a compensation capacitor, an automatic hollow switch and an alternating current contactor are arranged in the control box; the current relay is electrically connected with the current transformer; the current relay is in control connection with the alternating current contactor; and the automatic hollow switch, the alternating current contactor and the compensation capacitor are electrically connected. The current relay cannot be energized for a long time, and only when a water conservancy line has a load, the reactive automatic compensation device is started, so the service life of each compensation device can be effectively prolonged.

Description

The special-purpose reactive power automatic compensation device of rural water conservancy drainage and irrigation equipment

Technical field

The utility model belongs to the reactive power automatic compensation device technical field, relates to the special-purpose reactive power automatic compensation device of rural water conservancy drainage and irrigation equipment concretely.

Background technology

At present, our 10kV circuit reactive power compensator can only be by the idle configuration of compensator transformer, and reason is that the following water conservancy power load of transformer has bigger randomness, and the time spent need not during the rural water conservancy drainage and irrigation equipment.In water conservancy load concentration use in dry season, on the contrary less in water conservancy use in rainy season, have only part vegetable grower and rural area drinking water well to use; The used reactive power of pump motor is bigger; If 10kV circuit reactive power compensator can cause electricity consumption reactive power in dull season to cross benefit by the water conservancy full load configuration, line loss is increased; Waste electric energy, and set up to be equipped with and invest.

The rural water conservancy user has another characteristics again simultaneously: 1, load operation is steady, and reactive power is stable, and the building-out capacitor capacity is confirmed easily; 2, (promptly at the customer premises equipment place) installs building-out capacitor additional below user's water pump control switch; The user is owing to limited by electricity consumption general knowledge and professional knowledge; The rural power service condition is limited in addition, makes the compensation arrangement safe operation can not get ensureing, is not easy to power supply station's management maintenance; Though 3, we are equipped with reactive power compensation electric capacity in each water conservancy platform district now, can only use manual deciliter, at all can not with the water conservancy load stop knocking down row deciliter, can only say so and perform practically no function; 4, the present reactive power automatic compensation device on the market needs to obtain power factor, signal such as idle from automatic compensating controller, again according to obtaining signal automatic switching building-out capacitor, is applied in that the rural water conservancy user price is high, utilance is low.

The utility model content

The technical problem that the utility model solves just provides a kind of reliability and fail safe that improves equipment operation, be convenient to operation maintenance, can compensate, reduce circuit and transformer automatically because of carrying reactive power to cause electric energy loss, prolonging the rural water conservancy drainage and irrigation equipment special use reactive power automatic compensation device of service life of equipment.

For solving the problems of the technologies described above; The technical scheme that the utility model proposes is: comprise control cabinet; In described control cabinet arranged outside current transformer is arranged, in described control cabinet, be provided with current relay, compensation condenser, automatic hollow switch and A.C. contactor, described current relay is electrically connected with described current transformer; Described current relay and described A.C. contactor control connection, described automatic hollow switch, A.C. contactor and compensation condenser are electrically connected.

The special-purpose reactive power automatic compensation device of rural water conservancy drainage and irrigation equipment that the utility model provides, comparing with prior art has the following advantages: one of which, owing to comprise control cabinet; In described control cabinet arranged outside current transformer is arranged, in described control cabinet, be provided with current relay, compensation condenser, automatic hollow switch and A.C. contactor, described current relay is electrically connected with described current transformer; Described current relay and described A.C. contactor control connection; Described automatic hollow switch, A.C. contactor and compensation condenser are electrically connected, and when the rural water conservancy drainage and irrigation equipment is worked, produce electric current in the current transformer; The conducting of Control current relay; Thereby the control A.C. contactor is opened, and the conducting capacitor compensating circuit carries out reactive power compensation to the rural water conservancy drainage and irrigation equipment then; This reactive power automatic compensation device is compared simple economy, on the rural water conservancy drainage and irrigation equipment, uses easily; This reactive power automatic compensation device is positioned at is convenient to the administrative staff of power supply station more than user's water pump control switch and safeguards; User's reactive power is just effectively compensated at the following user side of transformer; Reduce the conveying of reactive power in transformer and above 10kV circuit, effectively reduce circuit and transformer because of the electric energy loss of carrying reactive power to cause, improved usage ratio of equipment; Make that the user is idle just effectively to be compensated at user side, reduced the load or burden without work of the above circuit of transformer, can effectively reduce the quality that the line end voltage drop guarantees power supply; Current relay is not charged for a long time in this design, only when the water conservancy circuit has load, just starts reactive power automatic compensation device, can effectively prolong the useful life of each compensation arrangement equipment.

Description of drawings

Fig. 1 is the structural representation of the special-purpose reactive power automatic compensation device of the utility model rural water conservancy drainage and irrigation equipment;

Fig. 2 is the key wiring diagram of a circuit;

Fig. 3 is the key wiring diagram of secondary line;

Fig. 4 is the key wiring diagram on cubic curve road.

Embodiment

Further specify below in conjunction with the structure of accompanying drawing the special-purpose reactive power automatic compensation device of rural water conservancy drainage and irrigation equipment that the utility model proposed.

Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, be the structural representation of the special-purpose reactive power automatic compensation device of rural water conservancy drainage and irrigation equipment.Its structure comprises control cabinet 1; Arranged outside at control cabinet 1 has current transformer 2; In control cabinet 1, be provided with current relay 3, compensation condenser 4, automatic hollow switch 5 and A.C. contactor 6; Current relay 3 is electrically connected with current transformer 2, current relay 3 and A.C. contactor 6 control connections, and automatic hollow switch 5, A.C. contactor 6 and compensation condenser 4 are electrically connected.When the rural water conservancy drainage and irrigation equipment is worked; Produce electric current in the

current transformer

2,3 conductings of Control current relay, thus control A.C. contactor 6 is opened; Conducting capacitor compensating circuit then; The rural water conservancy drainage and irrigation equipment is carried out reactive power compensation, and this reactive power automatic compensation device is compared simple economy, on the rural water conservancy drainage and irrigation equipment, uses easily; This reactive power automatic compensation device is positioned at is convenient to the administrative staff of power supply station more than user's water pump control switch and safeguards; User's reactive power is just effectively compensated at the following user side of transformer; Reduce the conveying of reactive power in transformer and above 10kV circuit, effectively reduce circuit and transformer because of the electric energy loss of carrying reactive power to cause, improved usage ratio of equipment; Make that the user is idle just effectively to be compensated at user side, reduced the load or burden without work of the above circuit of transformer, can effectively reduce the quality that the line end voltage drop guarantees power supply; Current relay is not charged for a long time in this design, only when the water conservancy circuit has load, just starts reactive power automatic compensation device, can effectively prolong the useful life of each compensation arrangement equipment.

Claims

1. the special-purpose reactive power automatic compensation device of rural water conservancy drainage and irrigation equipment; It is characterized in that: comprise control cabinet; In described control cabinet arranged outside current transformer is arranged; In described control cabinet, be provided with current relay, compensation condenser, automatic hollow switch and A.C. contactor; Described current relay is electrically connected with described current transformer, described current relay and described A.C. contactor control connection, and described automatic hollow switch, A.C. contactor and compensation condenser are electrically connected.