JPS63501610A - intermediate trip device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] intermediate trip device The present invention provides intermediate trip devices, intermediate trip stations, and transformer structures and relates to a method for controlling and monitoring multiple intermediate tripping stations. Ru.

The invention has particular application in the intermediate control and monitoring of a large number of stations.

The present invention is particularly useful in power grid protection and other isolated intermediate trip situations. It can be applied anywhere. The invention relates to the protection of power grid networks as an embodiment. However, it can be used for other purposes.

When a main monitoring terminal station is installed at the master station (main electric station) in the power distribution network, to multiple remote stations or substations (slave stations), respectively. It is known to provide a monitoring terminal. Conventionally, between the master terminal station and slave terminal station Various devices are used for communication. between each slave terminal station and master terminal station, and DC wiring is used between each slave terminal station in the system, and individual communication channels are channel is set. When there are many slave terminal stations, The number of permutations and combinations of communication was large. Conventional equipment has a small number of slave ends It was only useful for use in systems with stations.

In another known arrangement, there is direct communication between a master station and one remote station. A link is established and other remote terminal stations are connected in series, and one remote terminal station is connected. Multi-point control and monitoring operations were carried out by continuous operation. This kind of device It wasn't reliable. This is because if an accident occurs at one of the remote terminals connected in series, This is because all dependent remote terminal stations are then invalidated.

In still other devices, all remote stations share a communication channel from the master station. are connected in parallel. Master station sends digital code representing selected remote station and the selected remote station recognizes the unique code and responds to the message. transmits a unique code and data that is decoded at the terminal station. This type of equipment There was a protocol problem in determining an appropriate delay time for transmitted and received signals. Change Due to the relatively low level digital signals used in these devices, It was prone to malfunction due to noise interference problems.

A device using an audio frequency signal is known, but in this device, the frequency of the transmitted signal is Intermediate tripping is performed by wave number shifting. This type of equipment is It is effective only with the master terminal, and can communicate effectively with the remote terminal where only the master terminal exists. It's nothing more than that. Signal cancellation and noise effects have been a problem in such devices.

An object of the present invention is to provide an intermediate tripping device that minimizes the above-mentioned problems as much as possible. It provides:

The present invention outputs either a monitoring signal or an intermediate tripping signal, and outputs the intermediate tripping signal. an output means whose level is higher than the monitoring signal level; Isolation means between the applied buses, confirming the presence of the supervisory signal and A monitoring sensor that issues an alarm when the an intermediate tripping transmitter that outputs a signal and applies it to the above bus; Detects the presence of an intermediate trip signal and executes trip control at the relevant station. attempt to provide an intermediate trip station containing a trip sensor to It is something.

The device of the invention has one master station and at least one remote station. two-way communication between the master station and remote stations. and the master station is capable of sending a monitoring signal to the bus. Alert if the monitored signal is absent or lower than a predetermined level each remote station sends a master station supervisory signal to the bus. It can transmit its own monitoring signal lower than the signal as well as the remote monitoring signal. to issue an alarm if the signal is absent or is lower than a predetermined level; I can do it. In this way the master station or any one remote station can application applies an intermediate trip signal to the bus to connect other master stations and The remaining remote stations can be caused to issue a trip signal.

The master station outputs either a supervisory signal or a trip signal level. It includes an output means. These signals are voltage signals. The trip voltage level is Qualitatively higher than the monitoring voltage level. Preferably, the supervised voltage is about 20V DC. , the trip voltage is even higher. Preferably, the trip voltage level is about 120 d.c. V or higher. Both these voltages are arbitrary and the trip voltage level is required to be substantially higher than other voltage levels.

The master station output means is the above bus and the rest other than the relevant mass station. provide some degree of electrical insulation or separation between the stations. in this way, Isolation means are used between the bus and the output means. Isolation means in the power grid network Any other suitable means providing effective isolation or insulation against high voltages may be used. It's okay. Typically insulation to 15 JcV is required. In some embodiments Therefore, a pulse transformer interposed between the output means and the bus is used. pulse transformation The device can operate in various modes including forward mode and flyback mode. I can do it.

It is particularly preferred to use a flyback pulse transformer.

As mentioned above, the output means of the master station has two different levels of voltage. Output. In some embodiments, the output means is a DC-DC (direct current-direct current) converter. Consists of data. The converter can adjust the above two voltages to the desired level. You can also use it as In some embodiments, the converter has two pulse transformers together with a pulse transformer. It includes a pulse width modulator that can bring the voltage level to the appropriate level.

The master station includes monitoring sensors. The monitoring sensor sends the monitoring signal to the bus. Determine whether to apply. If this signal is not present, the master station will issue an alarm. The monitoring sensors preferably cover the bus and the rest of the station in question. Provides a high degree of electrical isolation between Preferably a reed relay is used, but other Isolation may be achieved by any suitable method. For example, optical isolation Other magnetic sensors can be used.

The master station includes a trip sensor. The tripping sensor is tripping. Detects that a signal is applied or added to the bus, and the station in question becomes the master. The station responds to perform a trip control action.

Tripping sensors preferably provide a high degree of isolation between the bus and the rest of the station do. Preferably beam relays are used, but isolation may be achieved by other suitable methods. It is also possible to do so.

The master station includes a trip signal transmitter. This signal transmitter is connected to the bus. The master station and remote or The slave station applies an intermediate trip output to the protection/intermediate trip panel, This allows the power distribution system to be appropriately controlled.

This master station includes a sensor and the output means does not output a monitoring signal. If this occurs, an alarm is guaranteed to be issued.

This sensor compares the signal emitted by the output means with a reference signal.

An alarm is issued depending on the comparison result. If the output means includes a transformer, the sensor - establishes a signal in the primary winding of the transformer that is proportional to the current and converts the signal into a reference signal. Compare with No.

Each slave or remote station is similar in principle to the master station above. However, the monitoring signal is different from the monitoring signal output from the master station. It is designed to output visual signals. If the monitoring signal is a voltage signal, the remote station The station monitoring signal is at a lower level than the master station monitoring signal. remote station Other features of the station are similar to those of the master station.

Master station and one or more remote stations or slaves The communication method used between stations is based on a master station and a predetermined or Outputs the monitoring signal to the common bus with the remote station, and the monitoring signal is sent to the master and Force the remote station to self-test for normal operation. Furthermore, this method Apply an intermediate trip signal to the terminal, detect the presence of the intermediate trip signal, and Including causing the star and remote stations to output control signals.

The above method uses a voltage signal, and the master station monitoring signal is the remote station The voltage is at a higher level than the monitoring signal. Preferably, the intermediate trip signal is higher than the target station monitoring signal.

The method includes detecting whether each station is generating a supervisory signal.

In the absence of such a supervisory signal, an alarm is issued.

The present invention includes a core piece, a primary winding wound on a primary winding form, and a secondary winding wound on a secondary winding form. including a pulse transformer having windings, each winding being arranged coaxially with respect to each other and having a core piece extends around the common part of the windings to ensure good magnetic coupling and electrical isolation between each winding. will be accomplished.

Preferably, the primary former has a tracking groove and a rigid. Preferably 2 The next winding form is provided via the tracking groove and the rigid.

The secondary winding form has a coil support portion around which the secondary winding is wound. Preferably truck A ring groove is secured to each end of the coil support portion. The winding form is approximately cylindrical. Tiger The locking groove and rigid form a terminal flange on the secondary former.

The core pieces have a gap between them, so that the transformer functions as a flyback pulse transformer. guarantee that it is working properly. The gap is of any desired size, preferably about 0. It is 251m.

Each core piece has a core arm on which the windings are arranged. Preferably each core piece has a central core It has multiple core arms on both sides of the arm.

A transformer includes one or more station blocks, with both ends of the windings It ends at the station block. Preferably the station block is 1 It is provided on or combined with the next winding form.

The primary winding form has a winding support portion around which the primary winding is wound. The primary winding support part is Preferably, it can be supported within the hole of the secondary winding form. Preferably this part is cylindrical.

Preferably, the primary winding form has an end flange that limits the extension and provides primary winding support. The part is fitted into a secondary former.

Preferably the transformer is broadcast. Botting compound is used for this purpose. It will be done. Preferably a floodover barrier is provided between the connecting pins or on both sides of the winding. Separate the ends.

The invention will now be described with reference to the accompanying drawings, in which particularly preferred embodiments are shown.

FIG. 1 is a block diagram of the intermediate tripping device of the present invention, and FIG. 2 is a block diagram of the intermediate tripping device of the present invention. FIG. 3 is a detailed conceptual diagram of the station in the example, and FIG. 3 is a detailed conceptual diagram of the station in FIG. FIG. 4 is an exploded view of a pulse transformer, and FIGS. 5a and 5b are detailed circuit diagrams. The figures are a front view and an end view of a winding form used in the transformer of Fig. 4, respectively; Fig. 5c is a front view of the reed relay winding form, and Fig. 6a is a change in Fig. 6b. Fig. 6b is a front view of the assembled transformer; FIG. 7 is a detailed circuit diagram of another embodiment of the station shown in FIG. 3.

As shown in Figure 1, the intermediate trip device is connected to a remote or slave station via the bus. It includes a master station IO connected to the station 11.

The bus consists of a bus or two pilot lines P1 and P2. Additionally, illustrated Other slave stations are connected in parallel with the above bus via another bus 14 so that be done. The master station 10 is connected to the protection/intermediate pull-out panel 12. shown. This panel 12 does not form part of the invention. Masters The station lO is located at a central station or electrical station, and the panel 12 It is combined with the output signal from the star station to each control device at the electrical station. Ru. Similarly, the slave station 11 is connected to the protective/intermediate tripping panel 13. be done. This panel 13 does not form part of the invention.

master station 10, slave station 11 and At any slave station connected in parallel with lots PI and P2, The trip output may be generated at an entirely different station in the device. A trip signal is generated at any station.

The master station IO generates a pulse voltage that generates a DC (direct current) voltage in the secondary winding S. It has a pressure vessel TR. This transformer TR is particularly suitable for use in operating the rest of the circuit. It functions as a flyback pulse transformer. Diode D1 is of the above type. It is an essential component for functioning as a transformer.

Reed relay 1 and 2 are connected to Zener diode through secondary winding and diode D1. Connected in series with the ode Zl. As an example of this transformer, the primary winding P is 0.2 The secondary winding S is wound in one layer 100 times by 5x secondary wire, and the secondary winding S is 1 layered by 0.25x X-ray. It is said to be wound in two layers 80 times. Relay Kl has a 0.055xπ wire with 25000 turns. And the feeling of 20-25 ampere turn with pull voltage 20v1 fall voltage 18V have a degree. 2 in relay has 0.1'12x x-ray with 3800 turns and pulls It has a sensitivity of 20-25 amp turns with a voltage of 90v1 and a drop voltage of 55V.

The Zener diode Zl is connected in series with 2 to the relay, and the pull of 1 and R2 to the relay. Reduces the difference between boost and fall voltages. Relay Kl, 2 is connected to each winding and and 15kV of good insulation between each contact.

As shown in Figures 2 and 3, the master station IO is 3 for transmission relay, 4 for intermediate trip transmission relay, and intermediate trip error alarm relay has a value of 5. A DC (direct current) power source is applied to the DC supply output terminal. The supply voltage is Nominal DC 32■ (DC 26~36V range) or nominal DC 110V (DC 88~36V range) 121V range). In Figure 3, nominal DC 110V is applied. 3, the appropriate resistors R1, R2, R19 and R20 should be connected ener diode Z2, connected in series with 5 to the relay and 4 to the relay. resistance R2 is 820 ohms for 32V DC, 4K for 5W and 110V DC. Room and IW are selected. Resistors R1, R19 and R20 are low nominal It is not necessary for high voltages and can operate reliably and continuously for high voltages. An appropriate value is selected. 3, R4, R5 for each relay is combined with itself It has two sets of contacts that are crossed. Relays 3 and 4 each have two normally open contacts. However, R5 has two normally closed contacts.

Each master station 10 has a monitoring link L connected in series with a variable resistor VRI. It has l. Slave station 11 has no monitoring link L1 and has variable resistance VR. It is configured in a similar manner to the master station, except that I is not required. da Iode DI is applied to pilot lines PI, P2 by surge or accidental reverse polarity. If so, protect the transformer.

A detailed circuit diagram of the preferred station is shown in FIG. Power is Station V+ and V-. A surge suppressor Sl is connected between these terminals.

The surge suppressor Sl consists of a metal oxide varistor or a non-linear resistor. Diode D 2 provides reverse polarity protection and its anode is connected to station V+.

Relay 3 is connected in series with normally open contact relay 2, and this series circuit is connected to the station Connected between V+ and -. Flyhole or back emf protection diode D3 Connected to relay in parallel with 3. As mentioned above, resistor R1 is selected, i.e. the supply voltage It can be determined arbitrarily depending on the size of Similarly, resistors R2 and R19 are set at selected values. Rui is considered to be zero. Zener diode Z2 provides the appropriate line voltage for the circuit. provide In this case, 15V DC is selected. Capacitor C1 is used as a filter. It works.

A pulse width modulator (PWM) is provided, the pulse rate of which is determined by link Ll, capacitor It is determined depending on the states of C2, resistors R4, R5, R6, and VRI. Rin When the relay is set to the state shown and contact 4 is opened, the frequency will be It is determined by R4 and C2. Set the link Ll to another state and set the relay to 4. When the contacts are opened, the frequency is connected in parallel with capacitor C2 and resistor R4. It is determined by the phase of VRI and R5. These resistors have appropriate relative values, R 4. When C2 determines the frequency, a low output voltage is applied to the pilot. . This is done when the station in question is a slave station, and In order to ensure that this slave station establishes correct operation in any case, Let the bus station do the monitoring itself. Close contact 4 on the relay and R If the value of 6 is increased, a relatively high voltage, i.e., an intermediate trip signal, will be applied to the pilot. is applied to This voltage is generated by the following method. Links are dashed lines In the case of the condition shown in , select each resistor and make sure that the specified voltage is the one that should be applied to the pilot. The voltage is lower than the intermediate trip signal, that is, the supervisory signal.

These three voltages can be, for example, approximately 2V DC and approximately 20V DC. Wear. These values are arbitrary, and high voltage (i.e. 120V DC) is inevitable. The monitoring signal (DC 20cm) is higher than that of the slave station. cannot contact the master station and cannot be seen from the master station. As a result, the signal becomes larger than the monitoring signal and becomes intermediate. To reliably prevent the signal from being mistaken as a trip signal. If other slave stations response to the pilot as if it had generated an intermediate trip signal. If so, this is not a good thing.

The output at pin 14 of the PWM is a pulse train of a predetermined frequency, and this output is QI It is applied to the amplifier circuit consisting of SQ2. Resistor R8 is the bias resistance of the amplifier. Ru. When a pulse is applied to the gate electrode of PETl, it becomes conductive. This results in A current flows in the primary winding of the transformer TR and a voltage appears in the secondary winding of the transformer. this Current flows through the RIO, increasing the voltage like in a modern ramp. . When this voltage reaches a predetermined level, the feedback signal is is held via the pin 11 of the PWM via R7, The PWM turns off. In this way, PET 1 is turned off sequentially. At the same time, the PWM is temporarily paused until the next pulse is output to the bin 14. this The capacitor C3 is then discharged in the circuit.

The voltage appearing at the collector of the FETI is the pulse when the FET 1 is operating properly. It is a dynamic voltage. This pulsating voltage is applied to capacitor C via resistor R9 and capacitor c4. 5 and applied to the non-inverting input of comparator A2. comparison A2 converts this voltage to a reference voltage provided by the voltage divider network R13, R14. Compare with. When the voltage at the non-inverting input of comparator A2 becomes higher than the reference voltage, The output of comparator A2 becomes high level, making transistor Q4 conductive.

Therefore, relay Kl is energized and its normally closed contact is closed, causing the relay to is energized and its normally closed contacts are held open. This means that the R5 contact is Ensures that the “intermediate trip error” alarm is not generated without returning to the closed state. I testify. If no energy is transferred to the secondary winding of transformer TR, then the primary winding As the flyback voltage increases and metal oxide varistor S3 becomes conductive, Limit the voltage applied to PET I to protect it from damage. Also, transistor Q3 turns off and the inverting input of comparator Al and the non-inverting input of comparator A2 Apply a low voltage to the inverting input.

The output of A2 becomes low. The output of AI becomes high, The LED does not light up.

When the above circuit is working normally, when transistor Q4 is turned off, The AI output goes low and the LED lights up to indicate that the station is operating normally. Instruct that there is. Resistor R15 is a load resistance for LED, and resistor R16 is C This is a bias resistor for 4. Diode D5 is a fly-hole die for relay 5. It is an ode. Resistor R11 is a bleeder resistor that discharges capacitor C5, and resistor R 12 is a bias resistor for C3.

If the monitoring voltage is not present on each pulse, the relay will not be energized and its normally closed contact point is open, relay 5 is not energized, and “intermediate trip error° alarm is not generated.” do not have.

The operation of the master station will be explained below. When the power is turned on, the energy is transmitted to the secondary winding of transformer TR, parallel connection with capacitor C2 and R4 resistors VRI and R5 determine the operating frequency of the PWM and thus the pilot P A voltage is applied to I and P2. If the station is operating normally and in monitoring mode When operating at 5 is excited and the LED lights up. If desired, the master station outputs an intermediate trip signal and applies an appropriate signal to its protective intermediate trip panel. , so that relay 4 is energized. This means that R6 and C2 are the outputs of P to VM. The frequency is controlled and an intermediate trip signal of 120V DC is applied to the pilot. We guarantee that. This voltage activates the reed relay 2 and is in series with the relay 3. It is made large enough to energize 3 by closing its connected normally closed contacts. child Then, close the normally closed contact 3 to remove the protection/intermediate tripper of the master station. A predetermined control signal is applied to the channel.

Similarly, 2 operates on the reed relay of each slave station, and the slave station 3 of the slave station is located on the protection/intermediate pull-out panel of the slave station. A fixed control signal is applied.

No energy is transferred to the secondary winding of the transformer at the master station. If so, the LED goes out, the relay 5 is not energized, its contacts are closed, and the relay 5 is not energized. An “intermediate trip error ° alarm” is added to the panel that is notified of this. Also, the monitoring voltage is If the pressure is too low, Kl will not hold and relay 5 will alarm. in this way and the supervisory signal is absent or very low at the master station. , an alarm is issued, and an alarm is also issued if the transformer does not transfer energy. Emitted. In any case, if a power transmission failure occurs, the R5 contact will close and the alarm will not be issued. It will be done.

The slave station has the link Ll in the position shown in FIG. 3 and the VRI and It has the same configuration as the master station except that R5 and R5 are inactive. and acts in the same way. The slave station normally outputs 2V DC to the pilot. This forces the slave station to check its own operation and ensures that the energy - is transmitted to the secondary winding of the transformer. This is the same as at the master station. It is done in the same way.

An exploded view of the transformer is shown in Figure 4, and Figures 5a, 5b, 6a and 6a. Further details are shown in Figure 6b. The transformer grows two core pieces 30,31. Core piece 3 0 has two arms 30a, 30b and one central arm. Core winding form 3 4 has a station block 34a in which the primary and secondary windings are connected. terminating in pins 35 and 35a, respectively. The winding form consists of an annular end member and a primary A spool 34b having a cylindrical extension around which the winding P is wound is provided.

The transformer has a bobbin 36 around which a secondary winding S is wound. The button as shown in Figure 5b The bottle 36 has a central hole 40, inside which a cylindrical winding form 34b is placed. An extension is provided. In this way, both windings are close to each other and approximately coaxial. be done. A good coupling of both windings is thereby achieved. This bobbin 36 has both windings. Constructed to provide excellent electrical insulation between the two and to ensure effective bonding be done. As shown in Figure 5a, the bobbin has tracking ridges 37 at each end thereof. ．． 39 and groove 38, with a large tracking distance between both windings to Good insulation between the two is ensured. This facilitates the use of the transformer under high voltage. Ru. Ideally, this transformer should be used where 15&V isolation is required. Can be done. Therefore, even if a fault occurs in the primary winding and 15kV is applied to it, In any case, the secondary winding is adequately isolated from the fault.

The bobbin 36 brings both windings close to each other in order to combine them, and also provides a good distance between the windings. Made from a material that is a good electrical insulator. A suitable material is Delron Acetal (DELR). ON ACETAL), but similar or replaceable materials may be used. Can also be done.

The core piece 30.31 projects into the cylindrical extension of the former 34b, while the arm 30b , 30a are adjacent winding forms 34. Extends to b. This is shown in Figure 6a.

Figures 6a and 6b show the potting compound provided around the transformer. 62 shows an assembled transformer protected by a capsule as shown in FIG. vinegar. The pin 35 projects outwardly from the assembled transformer, and the flag over barrier 64 Provided between the bottles to provide electrical insulation and separation between the bottles. Core piece 30.31 is a set A gap 60 is formed between them. This gap is the corresponding transformer This is necessary to ensure that the device operates in flyback mode. typically The gap is approximately 0°25°. The insulating spacer 61 has a core piece 31 in the packaging process. ensure adequate spacing for use. The fixing nut 63 is used before or after packaging. When installed, the completed transformer is placed in the desired position during use.

The primary winding is wound in one layer with 100 turns of 0.25xi wire. Secondary winding is 0.2 It is assumed to be 180 times two-layer winding using 5x X-rays. Terylene tape, etc. between the eyebrows of the secondary winding An insulating material may be applied. The packaging material is Araldite LC177 wood. It may consist of resin and LC170 hardener. flyback pulse change The voltage vessel may be provided with a short circuit on its secondary side to prevent damage.

FIG. 5c shows an embodiment of the reed relay 1, K2 bobbin 50. High insulation properties ( In other words, the reed relay has a special structure to make it at least 151 cV). be done. The bobbin is provided with a spool portion 52 having a stem 52a, the spool portion 52 having a stem 52a. The coil of the relay is wound around the coil portion. end cap 53 and Head portion 54 is located near the opposite end of spool portion 52. Groove 56 is key It is provided on the cap 53 and the head portion 54, and is covered on the bobbin 5o (not shown). assists in fixing the sleeve that is attached. It has a central hole 51 and a reed relay inside it. - switch components or leads are inserted. The lead is catalog number 27 It may be 25 email mini leads.

FIG. 7 shows another embodiment of that shown in FIG. In Figure 7, Figure 3 The following components shown in the figure have been omitted.

Relay Kl and its contacts, Resistors VRI, R5 and R17, Diode Z1゜ Includes additional circuitry. In the one in FIG. 7, a linear magnetic sensor FS is used, and the magnetic The air sensor FS is preferably of the low temperature drift type and is manufactured by Siemens (S IEMENS) SAS 231W or equivalent. sensor F S is tightly coupled to the relay 2 and is capable of sensing the magnitude of the pilot monitoring voltage. It will be done. The sensor FS is combined with a comparator A3, and the sensor FS is combined with a comparator A3. A reference voltage and the output from the sensor are applied to the two inputs, and the A3 If the signal detected between the outputs TI and T2 is smaller than the reference signal, the output B will be low level. Outputs a bell signal. This low signal is applied to the base of transistor Q4 and turn off. This causes 5 to not be energized in the relay, and its normally closed contacts are closed. an alarm is issued and a supervisory signal indicates that pilots TI and T2 are not present. Show.

A resistor R24 is connected in series with 2 to the relay, and the resistor R24 together with the capacitor C7 form an additional filter. This filter is similar to the circuit in Figure 3. To eliminate noise and enable high-speed tripping between stations.

Sensor FS is the pilot supervisor sent from the master station to the pilot. By providing a method for adjusting the visual voltage and adjusting the VRI of FIG. The need to adjust the pilot supervisory voltage is eliminated. Resistor R22 is the monitoring pulse The control range is limited to a ratio of 6=1. In this way, even if Even if the sensor fails, the resistor VR3 sets the operating threshold of the sensor FS. VH9 is an offset adjuster. Sensor PS is the same as above regarding monitoring voltage. is used to sense and adjust the trip output voltage in a convenient manner.

According to the intermediate trip device and specially constructed isolation transformer of the present invention, the lead Flyback DC-DC converter with relay and pulse transformer Insulation or isolation is thus achieved. Constant energy pulses to the converter Therefore, it is generated. The energy transferred and therefore applied to the pilot The voltage is taken as a function of pulse frequency and independent of the input supply voltage. child Preferred examples are as follows.

1. In one embodiment, the feedback is a constant load indicated to the pilot. It is necessary to maintain a constant output voltage over

2. By monitoring the flyback voltage of the primary winding of the transformer, the energy is It can be confirmed that this is transmitted to the secondary winding, and that this is caused by the insulation To provide a simple automatic monitoring method by each station that does not require a sensor.

3. The output voltage applied to the pilot is the square of the pulse frequency of P'vV M. proportionally, the operating frequency is low because the voltage required for monitoring is low. This is between each failure Increase the average time.

The device of the invention is such that the intermediate trip signal is generated at one station and the supply voltage is present. If a pulse is applied to FETI, energy is transferred to the secondary winding of the transformer. line and if a supervisory voltage is present at the pilot, the station can control the generation of trip signals at stations and other stations. . If none of these conditions apply, the “alarm intermediate trip error” signal will be activated. generated and an appropriate alarm signal is sent to the relevant or all protective/intermediate tripping panels 13. Sent.

Input camera output electronic 8 joules action ? Submission of translation of written amendment (Article 184-7, Paragraph 1 of the Patent Law)■, Indication of patent application 4 /-βku8ρ1δPCT/AU86100326 2. Name of the invention intermediate trip device 3. Patent applicant Address: Anne St., 4000 Prysbane, Australia REIT No. 62-80 Name The South East Queensland Elek tricity board 4. Agent 5. Date of submission of written amendment: April 14, 1987 Scope of request for correction 1. It has multiple stations, and each station has a monitoring DC voltage or outputs one of the intermediate trip DC voltages, and the intermediate trip voltage is An output means that has a level higher than the voltage, and an intermediate trip or monitoring voltage between the output means and Isolation means between buses to which voltage is applied; A monitoring sensor which provides an alarm when present, outputs an intermediate trip voltage from the above output means. an intermediate trip voltage transmitter for generating and applying to said bus; A trigger that detects the presence of trip voltage and performs a trip control operation at the relevant station. DC intermediate trip station for intermediate trip devices, including lip sensors.

2. The station according to claim 1, wherein the output means is a DC-DC converter. tion.

3. The station according to claim 2, wherein the converter includes a pulse width modulator. .

4. Claim No. 4 in which the pulse width modulator operates in a constant power pulse mode. Station described in Section 3.

5. Consisting of a pulse transformer having a monthly winding and a secondary winding with insulating means, The secondary winding is controlled via the converter to provide intermediate trip signals and monitoring to the secondary winding. Generating a signal, a monitoring sensor and a trip sensor are connected with the transformer. A station according to claim 4.

6. Check that the monitoring sensor and trip sensor are connected to the secondary winding of the transformer. The station described in item 5 of the scope of demand.

7. Each sensor consists of a reed relay with a relay coil, and each coil has two 7. The station according to claim 6, which is connected in series with the next winding.

8. Claims 5 and 6 in which the pulse transformer operates in flyback mode or the station described in paragraph 7.

9. Intermediate trip voltage and monitoring voltage are approximately 120V DC and approximately 20V DC, respectively. V, thereby acting as a master station. The main voltage and the monitoring voltage are about 120 V DC and about 2 V DC, respectively. According to any one of claims 1 to 8, which acts as a slave station. Stations listed.

11. The monitoring sensor compares the signal output from the output means with the reference signal. when the signal generated from the output means and including the sensor is smaller than the reference level. The step according to any one of claims 1 to 9, wherein the sensor issues an alarm. tion. .

12. The output means consists of a DC-DC converter with a pulse width modulator and is isolated The means comprises a pulse transformer having a primary winding and a secondary winding; The output from the modulator switches the current flowing through its primary winding, and is connected to the modulator above. One set of at least two sets of time-limiting elements connected to each other is connected to the modulator. While the output is sent out to generate the monitoring voltage from the above transformer, the other set of timers when the child is connected to the modulator and responds to the intermediate tripping transmitter of the pair. The limiting element is separated, the output is sent from the modulator, and the output is sent from the transformer to the intermediate generates a trip voltage, each sensor has two reed relays, and each reed The relay has a coil, both coils are connected in series with the secondary winding, and the trip relay is connected in series with the secondary winding. has a normally open contact, the monitoring relay has a normally open contact, and the alarm relay has a normally open contact. the alarm relay has at least one normally closed contact, and the alarm relay has at least one normally closed contact; When the visual relay is energized, its alarm contact switches to issue an alarm and trigger an intermediate trigger. The top voltage transmitter consists of a relay with at least one normally open contact, with an intermediate pull A release transmitting relay is connected in series with the other set of time-limiting elements, and the trip relay contact Claim 1, wherein the control relay connected in series performs a trip control function. station.

13. Any one of claims 1 to 12 substantially represented in each drawing station.

14. Each station is connected to the pilot line and between the stations Two-way communication is possible, with one station acting as the master station. function and can output its own intermediate trip voltage and monitoring voltage. while other stations act as remote or slave stations. along with its own intermediate trip voltage, monitoring voltage and the master stage above. It is possible to output a slave station monitoring voltage that is lower level than the voltage monitoring signal. at least two stations according to any one of claims 1 to 13, DC intermediate trip device including

15. The apparatus of claim 14 substantially as depicted in each drawing.

16. Core piece, primary winding wound on the primary winding form, secondary winding wound on the secondary winding form each winding and each winding form are coaxial with each other, and each winding wire and each winding form are coaxial with each other, and each winding wire and each winding form are coaxial with each other, and the circumference of the common portion of the core piece is A pulse transformer that extends from the top to the top and has good magnetic coupling and electrical insulation between the windings. A rectifier connected in series with the secondary winding described above, and a rectifier connected to the above rectifier and added from the sensor winding. filters the AC signal applied from the transformer. filter, the pilot line or bus connected to the above filter, and the A device 17 consisting of a surge limiter connected to the filter, a rectifier and a secondary between the trip sensor and the monitoring voltage sensor connected in series between one end of the winding and 17. The apparatus of claim 16, including differential reduction means between each sensor.

18. One of the formers has a tracking groove and a ridge, as set forth in claim 16. equipment.

19. The secondary winding form has a cylindrical winding support portion and an end flange, and the Claim 18, wherein the land flange is formed from a tracking groove and a ridge. The device described.

20, with a gap between each core piece to operate the transformer in flyback mode. The device according to any one of claims 16 to 19.

21. Each core piece has a core arm for positioning the winding and has another pair of core arms. one core arm of the multi-pair has a core arm on either side that positions the winding. 21. The device according to any one of claims 16 to 20, which is arranged in a.

22. The primary winding form has a primary winding support part for winding the primary winding, and the primary winding support 20. Apparatus according to claim 19, wherein the portion is contained within a secondary former.

23. The primary winding form has an end flange, and the primary winding is accommodated by the end flange. 23. Apparatus according to claim 22, which limits the protrusion of the inner portion into the secondary former.

24. Any of claims 16 to 23 substantially represented in each of the accompanying drawings. The insulation device described in.

international search report kmn+++on++^m, c-+-1Ih-, PCT/Aυ86100326

Claims (22)

[Claims] 1. Outputs either a supervisory signal or an intermediate trip signal, and outputs the intermediate trip signal. is a higher level than the monitoring signal, and the above output means and the above signal are applied. isolating means between the buses to detect the presence of the supervisory signal and the absence of the supervisory signal; A monitoring sensor that issues an alarm when An intermediate trip signal transmitter to be applied to the above bus, and an intermediate trip signal transmitter to be applied to the above bus. A trigger that senses the presence of a rip signal and causes the station to perform a trip control action. Intermediate trip station consisting of a top sensor. 2. The station according to claim 1, wherein the output means is a DC-DC converter. hmm. 3. 3. The station of claim 2, wherein the converter includes a pulse width modulator. 4. Claim 3, wherein the pulse width modulator operates in constant power pulse mode. Stations listed in section. 5. The insulating means consists of a pulse transformer having a primary winding and a secondary winding, and The secondary winding is controlled via the converter and intermediate trip and output are applied to the secondary winding. and a monitoring signal, and the monitoring sensor and trip sensor are connected to the above secondary winding. 5. The station according to claim 4, which is connected to the station. 6. Each sensor consists of a reed relay with a relay coil; 6. The station according to claim 5, which is connected in series with said secondary winding. 7. Claim 5 or 6, wherein the pulse transformer operates in flyback mode. Stations listed in section. 8. The intermediate trip and monitoring signals are powered by approximately 120 VDC and approximately 20 VDC, respectively. 8. The station according to any one of claims 1 to 7, having a pressure. 9. Intermediate tripping and monitoring signals have voltages of approximately 120 V DC and approximately 2 V DC, respectively. The station according to any one of claims 1 to 7, having: 10. The monitoring signal sensor compares the signal generated from the output means with the reference level. including a sensor, if the signal originating from the output means is less than the reference level, then The step according to any one of claims 1 to 9, wherein the sensor issues an alarm. tion. 11. The output means consists of a DC-DC converter with a pulse width modulator and is The means comprises a pulse transformer having a primary winding and a secondary winding, the pulse width modulator The output from switches the current flowing to the primary winding and is connected to the modulator. one set of at least two sets of timed elements transmits an output from said modulator; to generate a supervisory signal from said transformer, while the other set of timing elements of the set of timed elements in response to the intermediate tripping transmitter while being connected to the modulator; The output is pulled out from the modulator and the intermediate trip is output from the transformer. generate a signal, each sensor has two reed relays, each reed relay Both coils are connected in series with the above secondary winding, and the trip relay is normally open. The monitoring relay has a normally open contact, and the alarm relay has a contact of the monitoring relay. connected in series, the alarm relay having at least one normally closed contact, and the monitoring relay Its alarm contact switches to issue an alarm when the The transmitter consists of a relay with at least one normally open contact, intermediate trip transmission A relay is connected in series with the other set of time elements and connected in series with the trip relay contacts. The station according to claim 1, wherein the connected control relay performs a tripping control function. tion. 12. The stage according to any one of claims 1 to 11 shown in each drawing. tion. 13. Two-way communication is possible between each station, and one station acts as a starter station and has its own intermediate trip signal and supervisory station. While other stations may be remote or slave act as a station and provide its own intermediate trip signals, supervisory signals and and slave station monitoring signal at a lower level than the master station monitoring signal above. Claims including at least two slave stations capable of outputting visual signals At least two of the stations set forth in any one of the ranges 1 to 12. an intermediate trip device having a 14. 15. Apparatus as claimed in claim 14 substantially as depicted in each drawing. 15. A core piece, a primary winding wound on a primary winding form, and a secondary winding wound on a secondary winding form. a winding, wherein each of the windings and the winding form are arranged substantially coaxially with each other; It extends around the common part of each core piece, and provides good magnetic coupling and electrical connection between the windings. Insulated pulse transformer. 16. One winding form has tracking grooves and ridges, as set forth in claim 15. On-board transformer. 17. The secondary winding form has a cylindrical winding support portion and an end flange, and the Claim 16, wherein the land flange is formed from a tracking groove and a ridge. Transformer listed. 18. With a gap between each core piece, the transformer is operated in flyback mode. A transformer according to any one of claims 15 to 17. 19. The core piece has a core arm for positioning the winding and another pair of cores. having arms, one core arm of each pair positions the windings on both sides of the core arm The transformer according to any one of claims 15 to 18, which is installed in a section. 20. The primary winding form has a primary winding support part for winding the primary winding, and the primary winding support 18. A transformer as claimed in claim 17, wherein the portion is housed within a secondary former. 21. The primary winding form has an end flange, and the primary winding is accommodated by the end flange. 21. A transformer as claimed in claim 20, in which the projection of the housing portion into the secondary winding form is restricted. 22. Claims 15 to 21 shown in FIGS. 4, 6a and 6b A transformer as described in any of paragraphs.