Shanghai Senpu Electric Research Institute, Shanghai Sendi Voltage Regulation and Transformer Equipment Co., Ltd. Liu Qi Ding Lanying

1 Introduction

The column type regulator is a new type of pressure regulator that was successfully developed by senior engineer Liu Qi, Ding Lanying, Zhou Ling and other engineers who introduced Danish technology in the early years. It consists of a specially designed column type regulator and an automatic controller. Column regulator.

In order to meet the market demand, after several years of continuous research and testing, Shanghai Sempou Electric Research Institute has successfully developed new series of TDZ, TSZ oil-immersed self-cooling, TDGZ, TSGZ dry self-cooling column regulators.

With the rapid development of ultra-high voltage power transmission and transformation in my country, after nearly 20 years of hard work, the company has successfully developed a pre-stage adjustable power supply specially used for ultra-high voltage test equipment - TYDZ type column voltage regulator for high voltage test.

The carbon wheel, the core component of the column voltage regulator, is imported from Germany. The carbon wheel has the advantages of large passing current, low contact temperature rise and wear resistance. the key.

1. Product use

The column voltage regulator has the advantages of low impedance voltage, low operating noise, low voltage waveform distortion rate, and the same phase of input and output voltage, which is the main reason for its wide application.

Column-type voltage regulators can be used in various occasions where the load voltage needs to be adjusted, such as motors, electrical testing, rectification, communications, medical equipment, and supporting test equipment. Column-type voltage regulators are also often used.

The TYDZ type high-voltage test column voltage regulator specially designed and manufactured for UHV test equipment has become the most ideal pre-stage voltage regulator for UHV test equipment. The voltage regulator must be selected by major power supply bureaus and high-voltage equipment manufacturing units.

2. Product model and specification

3.1 Product model

3.2 Product Specifications

For the specifications of general type column regulators, see the "Product Center" on this website.

For the specifications of the column pressure regulator matched with the high pressure test equipment, see the TYDZ type oil immersed self-cooling column pressure regulator for high pressure test on this website.

1. Product performance

a. Small no-load current, low total loss and high efficiency;

b. The output voltage has good linearity and can be steplessly, smoothly and continuously regulated;

c. The lower limit of output voltage is less than or equal to 1%U2max;

d. Output voltage waveform distortion rate <3%;

e. The output voltage is in phase with the input voltage;

f. Impedance voltage is low. If there are special requirements (such as pollution test), within the range of 50-100% voltage regulation, uK<7%;

g. Dry self-cooling products have small sparks, and oil-immersed self-cooling products have no sparks;

h. Sound level≤60dB (A).

1. Working principle

The electrical schematic diagram of the column regulator is shown in Figure 2. The rated input voltage is applied to the input end, and the adjustable output voltage can be obtained at the output end by adjusting the position of the column voltage regulator brush on the coil.

Due to the limitation of turn voltage, the maximum unit capacity of single-phase oil-immersed self-cooling products is only 70kVA, and the dry self-cooling products are only 35kVA. To manufacture large-capacity column-type regulators, multi-unit combined column-type regulators should be used. press. If the voltage level exceeds 0.5kV, such as 3, 6, 10kV, the main circuit transformer (main transformer) and the secondary circuit series transformer (series transformer) should also be configured.

1. Product structure

The column type regulator consists of the body, the brush contact system, and the transmission device. The body consists of an iron core and a coil. The iron core is long and cylindrical, and the coil is cylindrical. The surface where it contacts the brush is de-insulated and polished. The brush contact system consists of a carbon wheel, a brush holder and a guide shaft. The carbon wheel has a small directional resistance and a large tangential resistance, which can reduce the contact loss and restrain the short-circuit current between turns; the transmission device is composed of a reducer, a sprocket mechanism and a servo motor. , The sprocket mechanism drives the carbon wheel brush to roll within the voltage regulation range. When the gear output voltage is adjusted to the minimum or maximum position, the limit switch will act to cut off the power supply of the servo motor and stop the voltage regulation. Servo motors usually use DC motors, but also three-phase asynchronous motors.

Small-capacity oil-immersed self-cooling products use corrugated fuel tanks, and medium and large-capacity oil-immersed self-cooling products use tubular or radiator fuel tanks.

For medium and small capacity oil-immersed self-cooling products with transformers (main transformer and series transformer), the column type regulator and transformer can share one oil tank, while for high-voltage and large-capacity oil-immersed self-cooling products, column type regulators and transformers It is intended to be hoisted in their own independent fuel tanks. The voltage regulator is connected to the outside of the transformer, the low voltage is connected with an overhead copper bar, and the high voltage is connected with an overhead cable.

Dry-type self-cooling column regulators are usually shipped as a whole in a cabinet structure.

2. Control circuit

The control circuit of the column type voltage regulator is the same as that of the induction voltage regulator. Please refer to Chapter 7 "Control Circuit" of the induction voltage regulator in the "Expert Forum" on this website.

3. Installation, use and maintenance

The installation, use and maintenance of the column regulator are the same as those of the induction regulator, please refer to Chapter 8 "Installation, Use and Maintenance" of the induction regulator in the "Expert Forum" on this website.