SU52288A1 - Device for automatic control of the frequency of the alternator - Google Patents

Description

There are already known devices for automatically controlling the frequency of the alternator, equipped with a servo motor control circuit - a sensitive device in the form of a wattmeter differential relay, which develops two forces of different signs, of which one depends on frequency and the second has a fixed set value.

The present invention relates to such a device and consists in a special form of its implementation.

In the drawing fng. 1 shows a diagram of the regulator of part I and FIG. 2 and 3 are two options for connecting the regulator relay to the motor controlled by them. - - ,. -Jf

To transformers: generator voltage through switch / 2: an oscillating circuit, consisting of, is connected. in series are connected the & dBnsator 5 ,, another transformer 2 and the limiting resistance 4. .B - the front winding of the choke transformer is closed to the current winding of one element of the sensor /. The current coil of an inexpensive element is connected to the four-volt winding of the transformer 5 successively through an adjustable resistance 6, for example, Rustrat's rheostat.

The meter voltage coils are connected in parallel and are powered directly from the generator voltage transformer. The first element of the counter / receives a torque L1, depending on a change in the frequency of the current, and the second element receives a torque Afj proportional to the current established by changing the voltage of the contact b, so that the windings of both these elements are turned on so that the above-mentioned moments Rotations were directed in different directions. and the resulting torque was equal to nx of the difference,

M, L1, -M ,.

Thus, the resulting torque can have different aaac plus nln minus, depending on the magnitude of L1, and L ,.

A single-pole / 5 switch with an equalizer is installed on the OS-Counter, which serves to turn on intermediate relays. 7. Switching the J3 includes one or another relay 7 depending on the direction

rotation counter. With the middle position of the switch, the intermediate relays 7 are inactive and, consequently, the electric motor 9 (Fig. 2), controlled by them, will be worthwhile. - Suppose that the disk of the counter is rotated to the right of ,. This will correspond to what Af,; / W ,; then the turbine regulator electric motor will act on the open access of WATER} H dvppa to the turb, until the a-torus gene has reached the magnitude at which the / -determined frequency is created. In this case, L1, will increase to a value. yMj, and switch 13 is set to the middle position.

The second intermediate relay will work when L1, / I2 and in the same way as when working on the first relay will act on reducing the turbidity of the turbium to. balancing counter torque.

(1-pinch Ameth each has two pairs of contacts, through which a duplication of buttons 8 is used to serve for manual. Power adjustment of the generatopa (Fig. 2 and 3.). In the case of inactivity of the regulator, the -8 buttons work normally.

Resistance b-serves to change the adjustable frequency.

Capacitors 10. they are intended to extinguish the spark of the switch 13. The switch // serves to change the 1 polarity on the contacts of the nonreclaved; chattel in the counter. ..,

The motor 9 has a number of revolutions, consistent with the validity of the corrector installed inside the counter with cht) (when the switch contacts are closed / for a long time, the rate of change. Fig |) of the generator does not exceed the doustya. veliviny for) G of this. generator. ,

. The loss of rotational speed of the motor is made consistent & 14.X. X.

To eliminate the overshoot of the counter, the offset is set. The adjustment of the work of the motor P is carried out by periodically moving the outside: the contacts of the counter switch / driven by the synchronous motor of Warren. The oscillation period of the contacts is 2 seconds. :

As a result of the presence of the cc / rector, the electric motor 9 will operate at different speeds, depending on the sharpness of the frequency change, without allowing overshoot.

In addition to the above-mentioned elements of the regulator, it is necessary to note that the inclusion of an additional maximum relay, acting on the current-phase phase of the generator, in order to switch off the operating current of the frequency regulator and supply it to it; Nala when the rated current of the generator is reached (not overloading), as well as at minimum loads.

The ECO-flashing device can also be used as an automatic controller for sensitivity. In this. In this case, the current winding of the first element of the meter is connected to a current transformer connected to an adjustable generator circuit.

The subject matter of the invention.

Claims (2)

1. A device for automatic control of the frequency of the alternator using a sensitive servo motor controlling a servo motor as a watt of a current differential relay, which develops two forces of different SHaKOEL of which one depends on the frequency, and the second has a fixed value, As a differential power meter relay, a two-element counter equipped with a eliminating control device is applied, the current winding of one element of which is switched on. in the oscillating circuit 2, 3, 4, powered by a voltage transformer, while the current winding of the second element is connected to a voltage transformer with a potentiometer according to Monia, in order to establish the required regimention mode 2. The use of the device according to claim 1 as a power regulator with current switching oscillating element transformer circuit current. 4P FIG. 2c Dz r-ti