SU675531A1 - Generator slip value and angle relay - Google Patents

Description

(54) RELAY OF SIZE ROCK AND ANGLE, GENERATOR

A disadvantage of the known device is that it is difficult.

The aim of the invention is to simplify the device.

This is achieved in the device. The value of the slip and the angle of the generator, containing a trigger, each OUTPUT is connected to a time relay, and each of the inputs is connected to the outputs of pulsed potential coincidence circuits, one of which | is connected by its pulse and control inputs to the outputs of the network and generator shapers of rectangular pulses, respectively, the pulse and control inputs of the second coincidence circuit are connected to the control and pulse inputs of the first match circuit.

FIG. Figure 1 shows the structural electrical circuit of the proposed device; in fig. 2 and 3 time diagrams of voltages on the inputs of the corresponding units of the device during its operation as a sliding relay and as an angle relay; in fig. 4 - vector stress diagrams. . .

The device contains shapers 1 and 2 rectangular impulses controlling their mains and generator voltages, pulse-dational circuits 3 and 4 coincidence, three gage 5 and time relay b and 7 connected to the trigger outputs, respectively. Pulse and control inputs: coincidence circuits 3 are connected to driver 1 and 2, respectively, and pulse and control inputs of circuit 4 are in reverse order.

Shapers 1 and 2 form rectangular negative impulses LRT; HeinisMeHHH controlled control unit; ульульульуль6---666ьньньньньн,, совпад, coincidence circuit flBJliseTcfl sriyite lem phases. It is triggered by jumping from the john on the. the pulse input, if at the control input of the v3 moment, there is a disabling signal. In particular, a capacitance-resistor-diode matching circuit produces, for a diode, a sharp-angled pulse of positive polarity only at those times when, in the presence of a positive foot, the potential of the capacitive (pulsed) input is jumped, the potential of the capacitive (pulsed) input is measured by a jump. . This determines the following condition. CpaeaTHBTaHBH; a potential potential coincidence circuit t

2 V - for the case of .1 g-f with t (1); - for the case of (2)} where f is the phase gap of the controlled voltages. Thus, in the range of slip angles 0, which corresponds to half the slip period, the potential-potential coincidence circuit produces a series of acute-angled pulses following the network frequency. The duration t of this series is proportional. slip period 5 | (see Fig. 2, a). Analytically, the duration tg of the pulsation can be determined by knowing the beginning of ti and the end of tg. ripple. Considering that 2

where TS is the slip period, we will find

ft-f

ts ia-t.

-n

-S --a --- - & -2Л5 Here, ipj and fj are the final values of the interval of angles determined by (1) or (2). . Since these values, which characterize the principle of operation, a potential-potential coincidence circuit, are constant, then

Vj, -if4 CptLsi K

 Due to the inverted insertion of circuits 3 and 4, the series of output pulses of circuit 4 are shifted by an angle relative to the series of output pulses of circuit 3. Since circuits 3 and 4 are set up by the state of trigger 5, the first pulse of one of the series sets the trigger to one of the stable states for the time ig, and for the first impulse of another series - to another state for the time ij. ,; ; y; . If the slip value a is greater than the specified one, then the relays b and 7 do not work, since the duration ± g is less than the set time setting t c. relays b and 7 work alternately, in each slip period, to the evidence that the slip half-period has become greater than the specified value, i.e. slip is less than the specified value.

Thus, the specified slip value is monitored twice for nepKQif skbyzheny. ; :

Claims (1)

If a model generator having the same frequency as the main generator and rigidly connected to its shaft can be used as a model goner gondola sensor, then this device, along with the control of sliding, can also control the specified value of the slip angle, in particular, the internal angle of the generator. For this purpose, the voltage of the generator of such a phase must be applied to the input of the former 2 that the voltage of the network c is at any active load of the generator. The program (see Fig. 4), where the indices о, и, and ac denote the mode of zero and nominal loads and the achievement of a given angle θ. Angle 0 is the internal angle of the generator, characterizing the overhang of the rotor relative to the unloaded position. Fig. 2 shows the state of the outputs of the respective units of the device during normal generator operation, it can be seen that only circuit 3 pulses, and circuit 4 does not produce output signals. Therefore, the trigger 5 is in such a state that the scientific research institute has the output b, and, therefore, the output p € Mia 7: the zero signal. FIG. 3 simulates the slip of the generator relative to the network at the beginning of the asynchronous ho / a, when the frequency of the generator has changed. As can be seen from the diagrams, if the angle increases the nG becomes larger than the nominal value, accepts the values of 5t 5T, then 3 stops pulsing and; (X6Ma4 starts generating signals that translate the trigger into another position. If the indicated state persists i iig So, the time relay 7 is activated, indicating that the generator angle has reached the specified value: In this case, the time relay 6 also works, but the fixed signal is inverse t.1 at its output is replaced by a long signal O, so the specified the angle value is controlled by chch two output blocks, which ensures the reliability of the device.In the case of asynchronous operation of the device, it acts as a slip relay / twice for the period signaled 6 asynchronous turns. The proposed device is simpler known, which reduces its cost and increases reliability. The effectiveness of the proposed device is determined not only by the specified driver, but also by the fact that It is built exclusively from Iyow pleds, which allows it to be implemented on unified functions and logical elements of any industrial series. Claims of the Slide and Angle: Generator Relay, which contains a trigger, each output of which is connected to a time relay, and from the inputs is connected to the outputs of an Impulse-potential matching circuit, one of which is connected by its pulse and control inputs to the network and generator drivers rectangular pulses, respectively, characterized in that, for the purpose of simplification, the pulse and control inputs of the second matching circuit are connected respectively to the control and pulse inputs of the first cx LS coincidence. G. Sources of information taken by the IN attention to the application of the aggrestize 1. Application 2301078 / 24-07, CL. H 02 T. 3/40, 1975, according to which the decision to issue an author's certificate was made. (/, -v-tf Ф№№. d -. . . what