SU111180A1 - The method of remote control and remote signaling and device for implementing this method - Google Patents

Description

The existing devices for telecontrol and remote signaling of distribution tiia use relay-co-tact elements, which, like Iravilo, systematically, operating in a pulsating mode, violate their adjustment over time, which leads to unstable and unreliable operation of the device as a whole. In addition, the duration of signal transmission (order) in such devices is relatively long, since the generation of pulses is carried out by relay contact elements at a frequency of not more than 10 pulses / sec.

In order to increase the reliability of the telecontrol and remote signaling device, achieved by excluding the contacts operating in the pulsed mode from the device circuit, as well as to improve speed, it is proposed to transmit the signal pulse code over the communication channel using direct current pulses. known devices, and pulses of sinusoidal alternating current.

The generation of such pulses is produced by static devices (generators, multipliers, converters) of the corresponding frequency and, thus, is carried out in a contactless manner.

The control of the distributors on both the transmitting and receiving sides is carried out using half-waves of one direction, obtained as a result of half-wave rectification in local chains of the above-generated generated sinusoidal current and coming from the communication line of sinusoidal pulses. The use of a sinusoidal electric current as pulses of the signal code allows them to be transmitted to the line and received from it also in a contactless manner.

As an impulse sign, the termination of the passage of a sinusoidal alternating current through a communication channel is taken for a certain period of time, which is fixed on the receiving side by a neutral relay of normal operation. In known devices, in such cases a delayed action relay is used.

No. 111180-2 -

A new method of fixing an impulse sign eliminates the device from performing irregular operations due to the possible deregulation of delayed relays. Thus, the proposed method of fixing an impulse tag, which is a time parameter, ensures high reliability of the telecontrol device, compared with the known devices of the same class of systems.

The pulse characteristic can also be fixed without using any general relays. In this case, all individual (executive) relays are fixed by an impulse symptom independently, for which they are made slow for response, and the duration of the cessation of sending current to the line must be longer than its own delay for the operation of these relays. Then, in the absence of a power interruption, individual relays cannot operate, and the selection of the relay will occur only on extended periods of current in the channel. FIG. 1 shows a block diagram of a device serving to implement the latter variant of a communication method between the control room of a control center and a controlled receiving point KP, i.e., without using a common relay for fixing a pulsed indication; in fig. 2 is a schematic diagram of the receiving and transmitting units; in fig. 3 is a schematic diagram of the node receiving point KP.

FIG. 1-3, the following notation is accepted: G is a source of alternating sinusoidal current frequency f, P is a receiving distributor, P перед is a transmitting distributor, P is a distributor in a pulse-sign circuit, LT is a linear receiving-transmitting transformer (P-winding, D-transmitting winding), LU - tube linear current amplifier, V. . . Vs-dry rectifiers, PK.- start button, / U ... PU-individual control relays at a controlled receiving point KP, K. . . К. „- control keys, РИ - synchronization and resolution control relay, CC - synchronous motion control node, 1C ... ПС-individual signal relays at the control room DP, БК .-. БКп -signalnye contacts.

The device for telecontrol and remote signaling (Fig. 1) consists of two identical receiving-transmitting units installed at the control room (DP) and controlled (CP) points connected by a communication link.

Each such unit includes: a current source G frequency /, linear transformer LT, amplifier linear currents LU, receiving and transmitting distributors Pn and Pf, distributor P in the impulse indication circuit, control unit for synchronous motion of the CS, relay, keys and block contacts of objects.

At a frequency of 50 Hz (as shown in Fig. 2), the current source is the network, and the switchgear finders can be used as distributors.

The order transfer method is explained in FIG. 2

Let the order be transmitted to object 3 using the individual control key / C3. Briefly start the PC button to close the circuit. In the half-period, when a positive potential is applied to pinch s, the distributor winding Rd is excited along the circuit: bus S, brush P p of the receiver distributor, its contact O, rectifier BI, start button I / S, contact O and the brush of the transmitting distributor, winding distributor Р ,, woman R. Distributor Р о makes one step, move your brushes Р -I and Р „-П to contacts 1.

When a positive potential appears on the bus R, the winding of the transmitting distributor P is driven along the circuit: R, rectifier B, winding of the transmitting distributor Pa, contact 1 and brush Pfl-I, distributor Pg, contact O and brush Br - I of the receiving distributor P5, bus 5. The transmitting distributor P takes one step at each half-wave of the current, bringing its brush Pg-l to contact 3. Then, with a positive potential on bus 5, the winding of distributor P is excited along the circuit: bus s, brush P-I and contact O distributor P „, rectifier B, contact key Board / Cs, pin 3, brush R, the winding distributor P ", R. bus distributor RH makes three consecutive steps, as Fe winding power circuit is broken. In this case, the strips and Pg-II, moving from contact 1 to contact 4, break the supply circuits of the winding of the distributor P a and the windings D of the transformer LT. As a result, the transmitting distributor Pa remains at position 3 for three steps of movement of the distributor Rd in the impulse indication circuit, and the power supply to the communication line is stopped for a time equal to three periods of 50 Hz alternating current, i.e. 60 m / seconds When the potential on the bus R is positive, the winding of the transmitting distributor P is excited (via pin 4 and the brush). Distributor P will continue to move, and alternating voltage will flow through the circuit; bus R, brush Pg-II and contacts 1-4-7 ... distributor Rd, winding D of transformer LT, contacts 1-4-7 ..., brush Pg-I. contact O and brush P „-1, tire s.

The automatic stop of the transmitting distributor P will occur when the power supply circuit of its winding is opened with the brush RJ- /. At the end of a complete detour of the distributor P, its brush, having taken the zero position, prepares a circuit for energizing the winding of the distributor Pd. At the same time, the PB-1 brush, coming off from contact 4, breaks the power supply circuit of the winding of the transmitting distributor Rd. Since the distributor winding Pg continues to be excited along the circuit, bus R, winding P b, brush P o -, contact O, rectifier B, contact 5 and brush Pb-1, contact O and brush P = -1, the bus, distributor Rd will move until its brush P-I interrupts the power circuit of the winding Rd. At the same time, due to the movement of the brush, the power supply circuit of the winding D is broken. Thus, the valve P comes automatically to its original position, while the valve RD, the linear transformer LT does not receive power.

Receipt of the order is shown in FIG. 2 and 3.

The sinusoidal electrical oscillations from the communication channel enter the receiving winding I of the linear traffic of the LT atopa and are fed to the grid of the LUM tube amplifier, to which a constant bias of 6–50 volts is also applied (Fig. 2). anode circuit: -g230 v, contact O and brush Ps-H, winding receiving distributor P,.,., brush R Л L and contact O, the anode of the amplifier amplifier LU, its cathode is 230 in. The receiving distributor P „is triggered by moving its brushes. When during the absence of current in the line the distributor brush Pn - // (Fig. 3) stops at this position for 60 m / s, the corresponding indication relay switch, for example, 1C, is triggered by the circuit: +, spike, Brush P - P, pin 1, JC relay, bus. In the initial position of the brush P-P, the resolution of the execution of the OV is triggered, which, together with the relay 1C, performs the control operation in the execution circuits. If the synchronous movement of the transmitting and receiving distributors is violated, the Rd-I brush will not stop at the initial position and, therefore, permission to switch on the object relay will not be given.

When the brush is moving at a speed of 50 steps, the individual relays US ... / gC per second, being under voltage only for 20 m / s, do not work, as they have a deceleration of 40 m / s.

№ 111180№ 111Г80-4 -

Subject invention

Claims (4)

1. A method of telecontrol and remote signaling with a time-distribution code, formed from electric current pulses fed into a communication channel, leading to a synchronous movement the receiving and transmitting elements of a device for telecontrol and remote signaling, characterized in that in order to increase the reliability of this device by excluding from its circuit the relay contact equipment operating in a pulsed mode, as well as increasing its speed, the code consists of sent B, the communication channel of pulses belt sinusoidal current preryvaemogo- for selecting individual control relay or signalizatsii- for the corresponding period in the time interval that is a multiple of the frequency of the current. 2. A device for carrying out the method according to claim 1, further from the fact that as a electoral body fixing the presence of electing alternating current intervals in the transmission cycle, a neutral relay was used, receiving power from the communication channel and carrying out .e choice of individual relays. 3. The method of telecontrol and remote signaling according to claim 1, characterized in that, in order to increase the speed of the device and simplify its circuit, achieved by excluding from it a special electing body, to obtain the code, an alternating current is used, the period of which is shorter than the response time of the individual relays, interrupted to obtain a selectable interval for a period of time longer than the specified time. 4. The method of telecontrol and remote signaling according to claim 1, characterized in that for receiving the alternating current supplied to the communication channel, an industrial frequency network of alternating current is used. Committee for Inventions and Discoveries with Editor I. V. Makarov Information and Publishing Department. Volume 0.51 p. L. Zak. 4209 Circulation of the Printing House of the Committee for Inventions and Discoveries at the Council of Ministers of the USSR Moscow, Petrovka, 14. Council of Ministers of the USSR Gr. 9 Sub. to pec. 20.VI 11-59 1150Price 75 cop. Muffuj; connection Fig i kn