RU1809549C - Method of testing of cascade of outdoor lighting - Google Patents

Abstract

SUMMARY OF THE INVENTION: the formation of information current pulses over sections of the cascade is performed according to latitudinal and polar signs, and the polarity of the signal recorded at the beginning of the cascade allows us to judge the operability of phase control wires. The method allows us to detect not only faulty sections of the cascade, but also to monitor the serviceability of the transmitting and control equipment at the entire voltage of the cascade. 4 ill.

Description

The invention relates to electrical engineering, and in particular to methods for monitoring cascaded outdoor lighting networks.

The aim of the invention is to increase the reliability of information.

A device for implementing the method of monitoring the outdoor lighting cascade is installed in the outdoor lighting cascade having a first section comprising first 1.1, second 1.2 and third .1.3 phase wires. Wire 1.1 is connected through pin 2 of the first contactor to pole A of power source 3. Wires 1.2 and 1.3 through contacts 4 of the second contactor are connected to poles B and C of power source 3. To neutral pole N of power source 3, neutral wire 5. Between phase 1.1, 1.2, 1.3 and zero 5 wires connected light sources 6 of the first section of the cascade, The second section of the cascade has the first 7.1, second 7.2 and third 7.3 phase wires. The first wire 7.1 through the contact of the first contactor is connected to the pole A of the second power source 9. Wires 7.2 and

7.3 are connected to the poles B and C of the power source 9 through the contacts 10 of the second contactor. The coil 11 of the first contactor is connected to the wires 1.1 and 5 of the end of the first section of the cascade, and the coil 12 of the second contactor is connected to the wires 1.2 and 5 of the end of the first section of the cascade. Between phase 7.1.7.2.7.3 and zero 5 wires connected light sources 13 of the second section of the cascade. The third section of the cascade has the first 14.1, second 14.2 and third 14.3 phase wires. The first phase wire 14.1 through terminal 15 of the first contactor is connected to the pole A of the third power source 16. The second 14.2 and third 14.3 phase wires are connected via terminals 17 of the second contactor to the poles B and C of the third power source 16. The zero poles of the power supply 3, 9, 16 connected to the zero wire 5. The coil 18 of the first contactor is connected to the phase 7.1 and zero 5 wires of the end of the second section of the cascade. The coil 19 of the second contact is connected to the phase 7.2 and zero 5 wires of the second section of the cascade. Between phase 14.1,14.2, 14.3 and zero 5 wires00

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The light source 20 of the third section of the cascade is connected.

Comparative analysis with the prototype shows that the proposed method for monitoring the outdoor lighting cascade is characterized in that the control information is encoded both in latitudinal and polar indications, which makes it possible to determine not only the operability of the sections of the cascade, which improves the reliability of the information.

Fig. 1 is a diagram of an outdoor lighting cascade with devices for implementing the monitoring method; Fig. 2 is a signal coding diagram of a control device for a cascade of outdoor lighting; Fig. 3 - operation of the cascade of outdoor lighting in normal mode; Fig. 4 shows an emergency lighting cascade operation.

A device for implementing the cascade control method has in each section of the cascade a first and second pulse shaper that provides a single short-circuiting for a period of not more than half a period of the mains voltage through the terminating resistor of the first and second phase wires to the neutral wire. At the end of the first section of the cascade, the first pulse shaper 21 is installed, connected by a phase output to the first 1.1 phase wire and a zero output to the neutral wire 5. The first input of the pulse shaper 21 is connected to the second phase wire 1.2, and the second input of this shaper is connected to the output of the pulse sensor 22 installed in the first phase wire 7.1 at the beginning of the second section of the cascade. The second pulse shaper 23 of the first section of the cascade is connected by a phase output to the second 1.2 phase wire, and by a zero output to the zero wire 5 of the end of the first section of the cascade. A first phase wire 1.1 of the first section of the cascade is connected to the first input of the driver 23. The second input of the driver 23 is connected to the output of the pulse sensor 24 installed in the second phase wire 7.2 of the beginning of the second section of the cascade. At the end of the second section, a first pulse shaper 25 is installed, connected by a phase output to the first 7.1 phase wire, and by a zero output to the neutral wire 5. A second 7.2 phase wire of the second section of the cascade is connected to the first input of the shaper 25, and the second input of the pulse shaper 25 is connected to the output the first pulse sensor 26 installed in the first phase wire 14.1 of the third section of the cascade. The second pulse shaper 27 of the second section of the cascade by a phase output is connected to the second phase wire 7.2 and the zero output to the zero wire 5 of the end of this section. First entry of the second

driver 27 is connected to the first phase wire 7.1 of the end of the second section of the cascade, and the second input is connected to the output of the second pulse sensor 28 installed in the second phase wire 14.2 start

0 of the third section of the cascade. At the end of the third section of the cascade, a first pulse shaper 29 is installed, connected by a phase output to the first phase wire 14.1, and by a zero output to the neutral wire 5. 5. The first input of the pulse shaper 29 is connected to the second phase wire 14.2. The second pulse shaper 30 phase output connected to the second phase wire 14.2, and zero

0 output to the neutral wire 5. The first input of the pulse former 30 is connected to the phase wire 14.1 of the end of the third section of the cascade.

At the beginning of the first section of the cascade in the first phase wire 1.1, a first pulse sensor 31 is installed, the output of which is connected to the first input of the first indicator device 32. The second input of the indicator device 32 is connected to

0 to the first phase wire 1.1.

In the second phase wire 1.2 of the beginning of the first section, a second pulse sensor 33 is installed, the output of which is connected to the first input of the second indicator device 5 34. The second input of the indicator device 34 is connected to the second phase wire 1.2.

A device that implements a method of controlling a cascade of outdoor lighting operates as follows.

When you turn on the cascade in the evening, close the contacts 2 of the first contactor and contacts 4 of the second contactor of the first section of the cascade, In wires 1,1,

5 1,2, 1.3 of the first section of the cascade, voltage is supplied from the poles of the ABC of the first power supply 3. The presence of voltage in the first 1.1 and second 1.2 wires causes the current to flow through the coils 11 and 12 of the first and second contactors of the second section of the cascade. The contacts 8 of the first contactor and the contacts 10 of the second contactor connect the ABC poles of the second power supply 9 to the wires 7.1, 7.2, 7.3

5 of the second section of the cascade. The presence of voltage in the wires 7.1 and 7.2 causes the current to flow through the coils 18 of the first contactor and 19 of the second contactor of the third section of the cascade. The contacts 15 of the first contactor and 17 of the second contactor connect the ABC poles of the third power supply 16 to the wires 14,1, 14.2, 14.3 of the third section of the cascade.

If there is voltage in the wires 14.1 and 14.2, the first 29 and second 30 shapers of the third section of the cascade begin to work. If there is voltage in the wires 7.1 and 7.2 of the second section of the cascade, the first 25 and second 27 pulse shapers of the second section of the cascade begin to work, if there is a voltage in the wires 1.1 and 1.2, the first 21 and second 23 pulse shapers of the first stage of the cascade begin to work.

The purpose of pulse shapers is to form information pulses after certain predetermined time periods. In the first section, the first pulse shaper 21 generates current pulses 1.1 in the first 1.1 (1 f), and the second driver 23 generates H.2 pulses in the second phase wire 1.2 (2 f) with a period (figure 2). Moreover, if the voltage of the second phase wire is applied to the first input of the pulse shaper connected to the first phase wire, then this shaper generates current pulses of positive polarity. If no voltage is supplied from the second phase wire to the first input of this driver, then current pulses of negative polarity are generated.

In the second section, the first driver 25 generates current pulses 1.1 in the first phase wire 7.1 (1ph), and the second driver 27 generates current pulses iy.2 in the second phase wire 7.2 (2ph) with a period of T2. In the third section, the first driver 29 generates current pulses 114.1 in the first phase wire 14.1 (1ph), and the second driver 30 generates current pulses H4.2 in the second phase wire 14.2 (2ph) with a period T3. Moreover, the periods of pulse formation have the characteristic TI, T2, T3. Taking this condition into account, let us consider the method of controlling the cascade under various operational situations.

When the cascade is working properly - the voltage in the wires 14.1 and 14.2 is present by the pulse shaper 29 in the first phase wire 14.1 (1ph), positive pulses + Н4.1 are generated with the follower period Тз. By a similar technology, the pulse shaper 30 generates +114.2 positive pulses in the second phase wire 14.2 (2ph). So, in section 3 (Uch 3) control pulses are formed

+ ii4.i and + H4.2 with a follow-up period of Tk (Fig. 3). At the beginning of section 3, pulses + I 14.1 are fixed by a pulse sensor 26, and pulses + I4.2 are fixed by a pulse sensor 5 of owls 28. Current sensors 26 and 28 act on the second inputs of pulse former 25 and 27 installed at the end of network section 2 (Uch 2). Shapers 25 and 27 transmit information pulses with a period T3 through the phase wires of the second section (Uch 2) of the network in the form of current pulses + I7.1 through wire 7.1 and 1.2 through wire 7.2. Current pulses + ly.i and + 1.2 are detected by current sensors 22 and 24, respectively, at the beginning

5 of the second section of Uch.2. Current sensors 22 and 24 act on pulse shapers 21 and 23 installed at the end of the first network section (Uch 1), and along phase wires 1.1 and. 1.2 current pulses + 1i and + H.2 go to

0 to the beginning of the first portion where they are detected by current sensors 31 and 33, respectively.

From the output of the current sensor 31, information is supplied to the input of the indicator device 32, and from the output of the current sensor 33 information is fed to the input of the indicator device 34. Thus, with normally working sections of the cascade and elements of the control device, information is displayed on the indicator device 32

0 of the first phase wire 1p - (+ T3), and information is displayed on the indicator device 34 for the second phase wire 2p - (+ T3) (Fig. 3).

In the event of a partial accident

5, a device that implements a control method, for example, in case of failure of the pulse shaper 30, if there is a voltage in the second phase wire 14.2, the shaper 30 cannot generate

0 current pulses in the second wire 14.2. In this situation, the current sensor 28 does not detect current pulses in the phase conductor 14.2 and, thus, does not provide signals to the control input of the pulse former 27.

5 The pulse shaper 27 in this case generates current pulses in the phase conductor 7.2 with a predetermined period T2, a latitudinal sign for this shaper. Thus, at the beginning of the cascade is fixed

0 information for the first wire 1p - (+ T3), and for the second wire 2p - (+ T2) (Fig.Z), which means - Normal operation of the cascade in case of failure of the pulse former of the second phase wire in the third section

5 cascades.

In an emergency in the cascade of outdoor lighting, for example, when there is no voltage in the second wire of the third section, the pulse shaper 30, even when it is in good condition, will not work

maybe, since the voltage from the second phase wire 14.2 does not arrive at the first input of the pulse shaper 29, the pulse shaper 29 generates current pulses with a period T3 but with a negative polarity. The current sensor 26 captures these pulses, determines their polarity and instructs the driver 25 to transmit information current pulses with a period T3 but negative polarity through the first phase wire 7.2. Similarly, the translation of the information feature T3 is performed by the driver 21 through the first phase wire of the first section. Information is transmitted via the second phase wires only from the former 27 of the second section. At the same time, this shaper generates current pulses of positive polarity with a period Ta. As a result, at the beginning of the cascade on the indicator device 31, information is provided for the first phase wire 1n - (- T3) of the absence of voltage in the second wire of the third section. Information is taken by the second indicator device 34 for the second phase wire, 2n - (+ Ta) - the second phase wire is working properly only from the second section of the cascade (Fig. 4).

Thus, the definition of an emergency in a cascade is obtained most reliably.

The coding of the state of the outdoor lighting stage for various indications of indicator devices is given in the table.

Using the proposed method for monitoring the cascade of outdoor lighting, it is possible to increase the reliability of monitoring the operation of the cascade and automatically detect a malfunction not only of the section of the cascade, but also of elements of the control device without violating the technology of the cascade. The control method allows to avoid receiving false information from a non-working cascade in case of failure of the control elements, thereby eliminating the costly and indefinite visits of the repair team to the places of the pseudo-accident.

Claims (1)

SUMMARY OF THE INVENTION A method for controlling an outdoor lighting cascade, in which the voltages in the first and second phase wires of each section are monitored and, if there is a cascade at the end of the last section of the cascade, they short-circuit the first and second phase wires through a limiting resistor through the limiting resistor to zero wire with a specified frequency, which is a sign serviceability of the phase wire of this section, at the beginning of this section, measure current values and record current pulses with a duration of no more than half period and measure the frequency of their repetition, with a repetition period equal to the specified one, transmit information by short-circuiting for a period of not more than half the period of the first and second phase wires the end of the previous section through the limiting resistor to the neutral wire with the same frequency, and in the absence of current pulses in the phase wires, the beginning of the last section is single shorting the corresponding phase wires to the neutral wire through the limiting resistor at the end of the previous section is performed with a frequency greater than the specified frequency of the end the last section, the health of the cascade is monitored by measuring the frequency of fixation of current pulses in the first and second phase wires of the beginning of the first section of the cascade, characterized in that, in order to increase the reliability of the information, information is transmitted over the sections of the cascade by shorting the first phase wire to a positive half-period mains voltage in the presence of voltage on the second phase wire of this section or shorting the first phase wire to a negative half-period of the mains voltage in the absence of voltage on the second wire this section, as well as shorting the second phase wire to a positive half-period of the mains voltage if there is voltage on the first phase wire or shorting the second phase wire to the negative half-period of the mains voltage if there is no voltage to the first phase wire of this section, check the health of the cascade at the beginning the first section of the cascade is carried out by measuring the repetition rate of current pulses and their polarity with respect to the mains voltage, and fixing current pulses with a certain th frequency in the first phase conductor on the serviceability of the first shows phase wires in a cascade to a section with a given frequency of shorting the first phase wire with zero, the positive polarity of the current pulses indicates the presence of voltage, and negative polarity - for the absence of voltage in the second wire of this section, the fixation of current pulses with a certain frequency: in the second phase wire indicates the health of the second phase wires in a cascade to a section with a specified frequency of shorting the second phase wire with zero, the positive polarity of the current pulses indicates the presence of voltage, and negative polarity - the absence of voltage in the first phase wire of a given section of the network. Information at the beginning cascade state of the cascade Normal operation of the entire cascade and pulse shapers Normal cascade operation Pulse former failure first wire 1P - on the 3rd site - on the 2nd site - on the 1st site failure of the pulse shapers of the second wire 2P - on the 3rd site - on the 2nd site - on the 1st section of Avari in the cascade: lack of voltage on the 1st wire 1P - on the 3rd site - on the 2nd site - on the 1st site lack of voltage in the 2nd wire 2P - on the 3rd site - on the 2nd site - on the 1st site No voltage on the 1st and 2nd wires - on the 3rd site - on the 2nd site - on the 1st section Lack of voltage on 1P of the 3rd section 2P of the 2nd section Lack of voltage on 1P of the 2nd section 2P of the 3rd section Information of the 1st wire 1P Information of the 2nd wire 2G) + TK + TK + T3 + T3 + T3 + T2 + Ti -TZ -TZ -TZ + T2 + T1 + T2 + Ti + T2 + Ti -t2 + Tg Tl -T2