TWM583156U - Circuit breaker tripping device - Google Patents

Abstract

The invention relates to a circuit breaker tripping device, which integrates power input terminals of a power circuit, a voltage detecting device, a current detecting device, and an external support unit for power input and the microcontroller. By the microcontroller and the internal circuit, the proposed invention ensuring the action of the circuit breaker tripping loop, and improve the previous scheme's shortcomings. At the same time, the microcontroller unit can process according to the detected signal, and display the status of the power circuit, the fault warning and the working state of the trip circuit to visualize the display interface for easy inspection and maintenance, and improve the safety of the power system.

Description

Circuit breaker power-off trip device

The present invention is a circuit breaker power-off trip device, which integrates power input power, voltage detecting device, current detecting device, and external support unit power input of the power circuit, and the microcontroller sequentially controls the unit and the internal circuit. The signal processing, in addition to ensuring the action of the circuit breaker tripping loop, causes the circuit breaker to trip off and improve the previous shortcomings. At the same time, the microcontroller sequence control unit can process according to the detected signal, and display the status of the power circuit, the fault warning and the working state of the trip circuit to visualize the display interface, which is convenient for inspection and maintenance, and improves the safety of the power system. Sex.

In the conventional distribution system, the devices for the power-off trip circuit are individually configured under various control power conditions. As a result, the control loop of a switchboard is different, and it is very complicated and difficult to overhaul. On the power-off trip circuit, it is often caused by the power failure of the tripping loop, which causes accidents. Did not get an effective improvement.

In the transmission (distribution) system, the high-voltage circuit breaker disk is a very important equipment and is valued. According to the certification requirements of Article 401 of the House Equipment Regulations, the high-voltage facilities, from the cabinet, high-voltage transformer, circuit breaker, and voltage regulator , flow comparators, lightning arresters, high-voltage fuses, etc., must be verified. It is reasonable to say that the high-voltage system should be very reliable and have high safety and reliability. The situation of the electric user's failure has been heard. In the discussion, there are many cases found. The crux of the problem is that the high-voltage system provides the power supply disability of the tripping circuit, which causes an accident! It has been found that in the high-voltage system, it is indeed a safe corner to provide a tripping circuit power supply component that can safely isolate the accident from the system. When the component fails, the system cannot operate to isolate the high-voltage accident due to lack of electric energy, and the consequences are quite serious, and even cause compensation problems.

The high-voltage circuit breaker disk has three kinds of actions, one is power-on and ON, one is power-off and OFF, and the other is tripping trip isolation accident. The general drive circuit breaker trip command comes from protecting the power, and protecting the power.驿The source of information, generally from the comparator CT, to check whether there is an overload or short circuit accident, and the comparator PT checks whether there is overvoltage or low voltage condition, zero comparator ZCT check whether there is grounding, or The temperature is too high, the frequency problem is `...``.`, etc., and the sensing device provides an isolation accident that protects the electric circuit from being actuated and thereby causing the circuit breaker to open the circuit breaker. At present, in the high-voltage power distribution system, many accidents cannot effectively isolate the accident and cause the circuit breaker to trip. Many of the reasons are due to the power failure of the tripping circuit in the system. At present, in the world, on the high-voltage power distribution system, the tripping circuit working power used by the system is generally divided into a DC working power source and an AC working power source. The DC working power source is generally represented by a battery pack, and the AC working power source is generally a capacitor tripping device. the Lord. At present, the tripping mode of the high-voltage circuit breaker is generally divided into two types, one is an electric type, using an internal action coil; and the other is a mechanical trip. Cases of high-voltage power distribution system accidents are listed as follows: Case 1, the explosion of the new Tianlun power plant in Taiwan Radio; Case 2, a semiconductor company in Guanyin Industrial Zone, the CTD fault of the protection power grid in the high-voltage disk, causing the Taipower substation to jump; A chemical plant in Hsinchu Industrial Zone, CTD fault caused 69KV main substation to jump, resulting in losses; Case 4, a chemical fiber plant in Fangyuan Industrial Zone CTD fault caused 69KV substation power jump, semi-finished products were completely destroyed; Case 5, a factory in Indonesia to protect electricity With CTD, the capacity is insufficient to cause a secondary accident; Case 6 The Science Park Electronics Factory expanded the UPS fault; Case 7: A hospital in Hualien, the CTD of the high-voltage disk was accidentally touched and failed; Case 8: Japan’s Fukushima nuclear disaster; Case IX, Soviet car Nobby nuclear disaster...etc. In the above case, nothing is caused by the power failure of the tripping circuit of the control power supply in the circuit breaker disk in its supply (distribution) system, resulting in failure of the system, because there is no effective working power. When an accident occurs, it is impossible to make the circuit breaker do the jump trip to isolate the accident, or even cause major losses such as a blackout. In summary, there are 1. natural disasters, 2. man-made disasters, 3. negligence of inertia habits. .

The high-voltage circuit breaker (H.V.CB) or the ultra-high-pressure CGIS or GIS is a command to receive the protection relay (Relay) as a means of tripping off the high-voltage circuit breaker to isolate the source of the accident. Therefore, if the circuit breaker cannot jump off immediately in the event of a short-circuit accident in a certain business unit (power receiving party), the high-voltage circuit breaker (HVCB) will be damaged, and the power supply to the main power supply mains will be extended to other businesses. The unit (power receiving party) causes a chain of industrial losses. Whether the high-voltage circuit breaker can jump in time is controlled by whether the relay can immediately issue an instruction. Therefore, when there is a problem with the working power supply for protecting the power, the protection power will not operate; when the protection power does not operate, the high voltage CB will not operate when the accident occurs, and it is impossible to isolate the accident of the public institution. Point, causing a serious secondary accident, and even affecting the Taipower power supply feeder to jump off! Don't be careless. Because this high-risk industrial safety incident often leads to accidents due to misjudgment, the operator of the mains supply line (Taiwan Electric Power Company) can prevent the electric breaker from jumping out of the circuit breaker due to the sudden voltage drop. The flow is saturated and slow, and the institution is required to set the protection system according to the regulations, and then the power supply is promised. The main provisions are: when the secondary side power supply of the comparator is used, it should be supplemented by a capacitive tripping device (CTD) or a capacitor tripping device and then connected to the uninterruptible power system (UPS), and electronically or The Capacitor Trip Unit (CTD) used in digital power units shall not be used for circuit breakers or other equipment. This is ideal, but unexpectedly Often come from ideal conditions, in practice, the UPS will almost always fail due to battery aging after one or two years. If the battery-based DC power supply system is used, the battery may be disabled after one year, but the business unit will not notice that the high-voltage circuit breaker (HVCB) will not trip when there is usually a short-circuit accident. It was found that the DC working power supply without the tripping circuit could not supply the working power to the relay, but it was too late.

In the switchboard, in which the power circuit and the trip circuit of the circuit breaker are protected, the working power source for protecting the power is generally AC and DC can be used to provide the required working power. Under normal circumstances, DC power is a priority (AC and DC can only be selected), because DC power is generally stable and reliable.

The author of this author has proposed and patented several schemes for the improvement of the working power of the tripping loop in the high-voltage power distribution system in the high-voltage power distribution system. Especially in the improvement of the CTD of the capacitor tripping device, it can be tested under load, and the electric meter can display its voltage value. The disc surface type can effectively prevent the accident prevention caused by opening the high-voltage switchboard, and there is a voltage comparison circuit. And the capacitor circuit tripping device of the alarm circuit can solve the problem that the capacitor will attenuate due to time. The combination of the time circuit and the voltage comparison circuit can be used daily or set the time to simulate the occurrence of an accident, and whether the tripping circuit working power supply is sufficient to push The load device is used to isolate the accident, and further has the CTD of the automatic power conversion circuit to prevent the external power supply from supporting the AC and DC power supply when the capacitor trip device is faulty, and can solve the problems of voltage and capacity and communication, and the above solution The program is the product of the current market. And the capacitor tripping device CTD with backup power supply, DC storage energy source DC power capacitor tripping device CTD, high voltage electromagnetic switch VCS special capacitor tripping device CTD, DC system capacitive tripping device CTD, etc., all the above improvements The schemes are designed and manufactured to make the working power of the tripping circuit in the high voltage system safer.

It can be known from the above that the high-voltage circuit breaker disk tripping circuit power supply is basically divided into two categories, one battery pack DC power supply, and the other AC power supply, generally from the high voltage comparator HV PT secondary side, because when When a short circuit accident occurs in the high voltage system, the PT voltage of the comparator sag drops to zero, resulting in no effective working power supply for the tripping circuit, causing the circuit breaker to not trip the closed contact to isolate the accident, so the AC power supply system The capacitor jumper CTD is installed as the working power source for the high voltage disk tripping loop of the system. In general, the tripping circuit operating power supply can solve most of the problems in the case of a DC battery pack or a capacitor tripping device for storing DC power, but under special conditions, such as a large earthquake... Such disasters, or human factors, may cause damage or disability of the tripping circuit, resulting in the circuit breaker not being able to trip off the isolation point, for example, due to improper use of equipment, such as the use of UPS, due to battery failure of the UPS internal battery The failure of UPS has led to many accident cases. Actual cases such as the Longshan Substation have not been isolated due to accidents, resulting in a large power outage in the Science Park, causing a large area power outage caused by Taipower's power jump; Taipower Xintianlun Power Plant circuit breaker did not trip off the isolation accident, resulting in more People's death and explosion; due to the earthquake, the Fukushima nuclear power plant in Japan damaged the trip circuit, the high-voltage circuit breaker did not trip, resulting in the cooling cycle system disabling, causing nuclear disasters, etc. The above actual cases all illustrate the tripping loop work. The importance of the power supply and the urgency of the need to improve, and the circuit breaker power-off trip circuit breaker circuit breaker Opposed invention.

Review the reasons for the failure of the tripping loop system in the high-voltage power distribution system. The cause of the burnout on the components such as the comparator PT is 1. Poor environment, excessive humidity, 2. Poor insulation of the PT body of the comparator ( Insulation deterioration, voids, etc.), 3. Invasion of animals, etc., will cause the PT to burn out; the cause of the burning of the comparator CT is 1. When the system has a short circuit accident, the secondary side causes burnout. 2, the environment is humid, 3. poor insulation, 4. grounding faults, etc., will Causes the comparator CT to burn; generally speaking, the secondary side of the flow CT is not open, high voltage is generated, and the comparator CT is burned, so the CT secondary side must be connected in series with the load impedance to avoid open circuit; generally, the specific pressure The secondary side of the PT must not be short-circuited to generate excessive fault current, and the comparator PT is burned. Therefore, the secondary side of the comparator PT must be connected to the load impedance to avoid short circuit, and in the general AC system, the control power supply is generally The power supply of the comparator PT is used as the working power source for the tripping loop. In the high-voltage system, the secondary side of the current transformer CT is a general power source, which is electrically connected to the meter indicating current and protection power. The secondary side of the voltage regulator PT is a general voltage source, which is electrically connected to the meter indicating voltage and protection power.驿, according to the electric energy equal to the voltage multiplied by the current (single-phase), the three-phase multiplied by √3 times of the electric energy, when the open-circuit current source of the secondary side of the comparator CT approaches zero, a high voltage is generated between the two ends, and vice versa. When the secondary side short-circuit voltage source of the PT approaches zero, a high current is generated between the two terminals. Therefore, when the system fails, the comparator PT or the comparator CT has abnormal state energy, and the external power supply is disabled. Line breakage or line short circuit... etc. will affect the working power of the trip circuit.

The problems presented by the above-mentioned accident cases, whether it is a natural disaster or a man-made disaster, the tripping system of the tripping circuit is disabled, and according to this, a great accident occurs, so under the existing structure, the switchboard cannot be changed. The structure, the setting value of the protection electric power cannot be changed, the structure of the circuit breaker cannot be changed, etc., and the invention of the circuit breaker power-off trip device of the present invention enhances the function of the original trip circuit system to achieve the past Unsecured security functionality. In summary, the control circuit based on DC power or AC power is used in the trip circuit of the high voltage disk. When the power is disabled, the actual situation is faced in the field. In the past, this problem cannot be effectively solved. Therefore, from the actual situation of the situation in the field, a circuit breaker power-off trip device can solve the above problems and improve the safety and stability of the power distribution system.

The present invention is a circuit breaker power-off trip device, which integrates power input power, voltage detecting device, current detecting device, and external support unit power input of the power circuit, and the microcontroller sequentially controls the unit and the internal circuit. The signal processing, in addition to ensuring the action of the circuit breaker tripping loop, causes the circuit breaker to trip off and improve the previous shortcomings. At the same time, the microcontroller sequence control unit can process according to the detected signal, and display the status of the power circuit, the fault warning and the working state of the trip circuit to visualize the display interface, which is convenient for inspection and maintenance, and improves the safety of the power system. Sex.

In order to achieve the above object, a circuit breaker power-off trip device is electrically connected to a power circuit, and the power circuit has at least one trip coil for disconnecting the circuit breaker of the power circuit to interlock the circuit breaker. The tripping mechanism disconnects the circuit breaker; and the circuit breaker power-off tripping device comprises: at least one voltage detecting device disposed on the power circuit, the voltage detecting device includes a voltage step for reducing the output voltage a current detecting device disposed on the power circuit, the current detecting device includes a downflow unit for reducing an output current; and at least one protective power device disposed on the power circuit, the protection According to the power system line, load status and protection coordination requirements, the electric power set at least one of the protection electrical safety setting values such as current, ground, voltage, frequency, temperature, etc., when the detection device value is greater than the electrical safety setting value The protection circuit is normally open and the contact is actuated; the circuit breaker trip circuit system improvement device is mainly composed of a current detecting device, and can be supplemented by a parallel voltage detecting device and a battery The AC or DC power output of the external power supply is the control loop power supply, and then the protection power normally open contact or the remote intelligent forced power failure command contact, the series circuit breaker closed auxiliary contact, and the serial connection are connected in series. Jumper coil Into a loop system. The protective electric power normally open contact or the remote intelligent forced power off command contact is turned on. When the circuit breaker is closed and the auxiliary contact is actuated, the trip coil of the circuit breaker is controlled by the control loop power supply or the current detecting device. The power of the flow unit is actuated to drive the trip mechanism of the circuit breaker to open the circuit breaker.

In order to achieve the above object, a circuit breaker power-off trip device is electrically connected to a power circuit, and the power circuit has at least one trip coil for disconnecting the circuit breaker of the power circuit to interlock the circuit breaker. The tripping mechanism disconnects the circuit breaker; and the circuit breaker power-off tripping device comprises: at least one voltage detecting device disposed on the power circuit, the voltage detecting device includes a voltage step for reducing the output voltage a current detecting device disposed on the power circuit, the current detecting device includes a downflow unit for reducing an output current; and at least one protective power device disposed on the power circuit, the protection According to the power system line, load status and protection coordination requirements, the electric power set at least one of the protection electrical safety settings such as current, ground, voltage, frequency, temperature, etc. When the value of the detecting device is greater than the electrical safety setting value, the protective power switch is normally turned on; the circuit breaker tripping circuit system improving device is connected to the current detecting device and connected in series with the protective power device. The point or far-end intelligent forced power-off command contact, the series-connected circuit breaker closes the auxiliary contact, and the tripping coils connected in series with the circuit breaker are connected in series to form a tripping loop system. When the protection electric power normally open contact or the remote intelligent forced power failure command contact is actuated, when the circuit breaker closes the auxiliary contact to be actuated, the tripping coil of the circuit breaker uses the electric energy of the current detecting device to descend the unit The trip mechanism of the circuit breaker is driven to open the circuit breaker.

In order to achieve the above object, the circuit breaker power-off trip device of the present invention is electrically connected to a power circuit, and the power circuit has at least one trip coil for disconnecting the circuit breaker of the power circuit to interlock the circuit breaker. Disengagement mechanism disconnects the circuit breaker; and is disposed in the power circuit At least one voltage detecting device, the voltage detecting device includes a step-down unit for reducing the output voltage; and a current detecting device disposed on the power circuit, the current detecting device includes a a current-down unit for reducing the output current; and at least one protection battery disposed on the power circuit, the protection power setting at least one of the protection electrical safety setting values according to the power system line state, such as current, ground, voltage , frequency, temperature, etc., when the value of the detecting device is greater than the electrical safety setting value, the protective circuit is normally open and the contact is activated; and the circuit breaker power-off device includes: a main control substrate, The main control substrate is electrically connected to include an external power connection unit, an internal voltage comparison unit, a microcontroller sequence control unit, a trip circuit power supply circuit, a capacitor storage circuit, a sensing device connection unit, and an external unit. Device device connection unit, a trip circuit connection unit, and a status display unit. A tripping loop power supply circuit is electrically connected to the microcontroller sequential control unit, and the appropriate power output is used as the tripping loop driving electric energy; and a capacitor storage circuit electrically connecting the tripping loop power supply circuit, Appropriate DC power for energy storage; an external power connection unit electrically connecting external AC power and DC power to the main control board; an internal voltage comparison unit electrically connected to the external power connection unit, the sensing device connection unit, and the status display unit a microcontroller sequential control unit electrically connected to the external power connection unit, the sensing device connection unit, and the internal voltage comparison unit, and an appropriate electric energy is electrically connected to the tripping loop power supply circuit through an internal setting sequence; a tripping loop a connection unit, the trip circuit connection unit is electrically connected in series to form a trip circuit, and electrically connected to the trip circuit power supply circuit; and a sensing device connection unit The sensing device connecting unit includes at least two current detecting devices and voltage detecting devices Out; means an external apparatus connecting unit, the external apparatus connecting unit means includes at least one protection relay normally open contact, the circuit breaker trip coil ends Or an external forced command contact; a status display unit, the status display unit can display the state of the system trip circuit and each power state; a circuit breaker power-off trip device can be rectified according to current source power or voltage source power For DC power, the capacitor stores DC power or external power. The microcontroller sequential control unit provides the tripping drive power from the trip loop power supply circuit, and forms a complete trip loop circuit through the trip loop connection unit. When the auxiliary auxiliary contact is actuated, the tripping coil of the circuit breaker is driven to interlock the circuit breaker tripping mechanism to open the circuit breaker.

To achieve the above object, a circuit breaker power-off trip device is electrically connected to a power circuit, and the power circuit has at least one trip coil for disconnecting the circuit breaker of the power circuit to interlock the circuit breaker. The tripping mechanism disconnects the circuit breaker; and a voltage detecting device disposed on the power circuit, the voltage detecting device includes a step-down unit for reducing an output voltage; and a voltage detecting circuit is disposed on the power circuit At least one current detecting device, the current detecting device includes a downflow unit for reducing an output current; and at least one protective power device disposed on the power circuit, the protection power according to the power system line state Setting at least one of the protection electrical safety setting values such as current, ground, voltage, frequency, temperature, etc., when the value of the detecting device is greater than the electrical safety setting value, the protective device is normally open and the contact is actuated; and the The circuit breaker power-off trip device comprises: a main control substrate, the main control substrate electrically connected comprises an AC-DC conversion circuit, a tripping loop power supply circuit, and a capacitor energy storage Road, a power automatic alternating circuit, a sensing device connecting unit, an external device device connecting unit, a state display unit; an AC/DC converting circuit, the AC/DC converting circuit is electrically connected to the voltage detecting device , or external AC power, convert AC power into DC power, and electrically connect DC energy to the capacitor energy storage by capacitor energy storage; a trip circuit power supply circuit, at least electrically connected voltage detecting device, step-down unit, current Detecting device downflow unit or external support power supply; a capacitor energy storage The capacitor storage circuit is electrically connected to the tripping loop power circuit to store appropriate DC power; a power supply automatically alternates the circuit, electrically connects the loop power circuit, and the capacitor energy storage circuit uses the appropriate power output as a jump. The circuit device is connected to the circuit, and the sensing device connecting unit comprises at least two current detecting devices and voltage detecting devices; and an external device device connecting unit, the external device device connecting unit includes at least one protection The electric power normally open contact, the two ends of the tripping coil of the circuit breaker or the external forced command contact; a status display unit, the status display unit can display the state of the system trip circuit; and the circuit breaker power off device can be According to the current source electric energy or voltage source electric energy, after being rectified into DC electric energy, the capacitor stores DC power or external electric energy, and the automatic alternating circuit of the power supply provides tripping driving power and then serially connecting the electric power to the normally open contact, or protecting the electric power. The open contact is connected to the external forced command contact to be turned on. When the circuit breaker is closed and the auxiliary contact is actuated, the circuit breaker is driven. The coil is de-interlocked circuit breaker tripping mechanism to open the breaker. A circuit breaker power-off trip device is electrically connected to a power circuit, and the power circuit has at least one tripping coil for disconnecting the circuit breaker of the power circuit to disconnect the trip mechanism of the circuit breaker The circuit breaker power-off trip device includes: at least one voltage detecting device disposed on the power circuit, the voltage detecting device includes a step-down unit for reducing an output voltage; At least one current detecting device on the power circuit, the current detecting device includes a current flowing unit for reducing the output current; and at least one protective power device disposed on the power circuit, the protective power device corresponding to the power system Line, load status and protection coordination requirements, set at least one of the protection electrical safety settings such as current, ground, voltage, frequency, temperature, etc., when the detection device value is greater than the electrical safety setting value, the protection power is often The open contact is actuated; the circuit breaker power-off trip device is connected in series with the protection power-opening contact or the remote intelligent power-off command contact by the current detecting device, and then connected in series Trip coil serially connected circuit-formed In a tripping loop system, when the protection electric pole normally open contact or the remote intelligent forced power failure command contact is actuated, when the circuit breaker closes the auxiliary contact to be actuated, the tripping coil of the circuit breaker is detected by current The electrical energy of the device drives the trip mechanism of the circuit breaker to open the circuit breaker.

The principle and technical features of this creation will be illustrated as follows:

1‧‧‧Breaker power-off trip device

10‧‧‧Circuit breaker

11‧‧‧ Current detecting device

12‧‧‧Voltage detection device

13‧‧‧Bounce mechanism

14‧‧‧Circuit Closed Auxiliary Contact

15‧‧‧Bounce coil

16‧‧‧Protection of electric poles

17‧‧‧ Remote Intelligent Forced Power Off Command Contact

18‧‧‧Bounce loop power circuit

19‧‧‧Electrical protection

20‧‧‧Power automatic alternating circuit

21‧‧‧Sensor connection unit

22‧‧‧External equipment unit connection unit

23‧‧‧Status display unit

24‧‧‧External support unit

25‧‧‧External power connection unit

26‧‧‧Bounce loop connection unit

30‧‧‧Main control substrate

180‧‧‧Internal voltage comparison unit

181‧‧‧First detection circuit

182‧‧‧First display unit

183‧‧‧Microcontroller Sequence Control Unit

184‧‧‧AC and DC conversion circuit

185‧‧‧DC power supply alternating circuit

186‧‧‧Second detection circuit

187‧‧‧Second display unit

188,189‧‧‧Switch B contacts

190‧‧‧Capacitor energy storage circuit

191‧‧‧DC power supply parallel output circuit

192‧‧‧ third detection circuit

193‧‧‧ Third display unit

Fig.1 Schematic diagram of wiring of circuit breaker power-off trip device

Figure 2 Schematic diagram of the current detecting device (current comparator) circuit

Figure 3 Schematic diagram of the trip circuit of the circuit breaker power-off trip device

Figure 4 Schematic diagram of the circuit breaker power-off trip device

Figure 5 Schematic diagram of the visual display device of the circuit breaker power-off trip device

The circuit breaker power-off trip device of the present invention, the action principle of the trip circuit is as shown in FIG. 1 , and a circuit breaker 10 is disposed on the power circuit, the circuit breaker 10 has a trip coil 15 , and the trip coil 15 links the same a tripping mechanism 13 of the circuit breaker 10; the power circuit is provided with a voltage detecting device 12 (such as a voltage comparator), the voltage detecting device 12 includes a buck unit for reducing the output voltage; The connection is electrically connected to the protection circuit 19 and the trip circuit power supply circuit 18. A current detecting device 11 (such as a current transformer) is also disposed on the power circuit. The current detecting device 11 includes a downflow unit for reducing the output current. The downflow unit is electrically connected to the protection battery 19 and jumps. The trip circuit power supply circuit 18, the trip circuit power supply circuit 18 is electrically connected to the protection circuit 19 via the power supply automatic alternation circuit 20 to connect the protection power to the normally open contact 16. The protection device 19 sets the protection electrical safety setting value according to the power system line, the load state and the protection coordination requirement. When the protection setting value is reached, the protection power switch normally open contact 16 is actuated and can be connected to the remote end. The intelligent forced power-off command contact 17 is connected in series with the circuit breaker closing auxiliary contact 14, and the trip coils 15 of the circuit breaker 10 are connected in series to form a tripping loop system. In this way, the electric energy of the current detecting device 11 (such as a current transformer) and the electric energy of the voltage detecting device 12 (such as a voltage comparator) can be introduced to further improve the tripping coil 15 of the circuit breaker 10 when an accident occurs. There is enough power to drive the accident.

Please refer to Figure 2 for further explanation of the principles of this creation. As shown by the shaded box in FIG. 2, it is an equivalent circuit diagram of a general current detecting device (the current comparator). The current of the downflow unit of the current detecting device 11 flows through an ammeter to form a complete loop. In order to further introduce the current of the current detecting device 11 (such as the current transformer) as the power source of the circuit breaker 10 to trip the coil 15, the present invention is connected to the side of the current detecting device 11 in parallel with one side branch path. When the power system is normal, the protection circuit 19 does not operate, and the internal protection power is normally open, and the circuit breaker 10 is open. The circuit breaker closes the auxiliary contact 14 to be in a conducting state, at which time no current flows through the side branch path. However, when the power system fails, the protection device 19 operates the protection switch, the normally open contact 16 is turned on, and the circuit breaker is closed. The auxiliary contact 14 is also turned on, and the side branch path constitutes a complete loop conduction state, and the current detecting device 11 ( The downflow cell current, such as the current comparator, passes through the side branch path and thus can be used as the power required to drive the circuit breaker 10 to trip the coil 15.

The technical characteristics of the current-side branching path of the current detecting device 11 (such as a flow comparator) are combined with the design of the conventional circuit breaker tripping power supply, please refer to FIG. The shaded box at the upper left of Figure 3 shows the tripping power supply of the battery pack BAT, the capacitor tripping device CTD or the uninterruptible power system UPS as the circuit breaker 10 tripping coil 15 in the conventional art, which is usually in general, Sufficient to provide the drive power required for the circuit breaker 10 to trip the coil 15. However, when the battery, the capacitor trip device or the uninterruptible power system is disabled due to human negligence and natural disasters, the trip coil 15 cannot be driven to isolate the accident, which will cause great harm. If the technical characteristics of the current source of the downflow unit introduced into the current detecting device 11 (such as a current transformer) are integrated, it can be seen from FIG. 3 that when the system is faulty (the protective power is normally open, the contact 16 is turned on), When the battery pack, the capacitor trip device or the uninterruptible power system of the conventional technology is disabled, the current of the power circuit continues to pass through the circuit breaker 10 at this time, so the current detecting device 11 (such as the flow comparator) of the downflow unit The current source continues to circulate (see Figure 2). At this time, the power automatic altering circuit 20 is switched to the circuit of the current detecting state 11 due to the battery pack, the capacitor tripping device or the uninterruptible power system of the conventional technology, and the current flows into the circuit breaker as indicated by the dotted arrow. The tripping coil 15 of the 10 is driven to drive the tripping mechanism 13, so that the closed main contact of the circuit breaker 10 can be cut off to isolate the accident point, further improving the stability of the circuit breaker tripping loop system to ensure the operation of the power system. Security.

As mentioned above, the circuit breaker power-off trip device of this creation is to ensure the tripping of the circuit breaker. The road can be stably executed, and the visual interface is convenient for understanding the operation of the circuit breaker and the condition check of the power circuit. The preferred implementation is shown in FIG. 4 . Elements or blocks of the same function in the figures are denoted by the same reference numerals. Referring to FIG. 4, the circuit breaker power-off device 1 has an external power connection unit 25 for normalizing the connection of the external support unit 24, the voltage detection device 12, the current detecting device 11, the protection device 19, and the like. The terminal signal is connected. The external power source connection unit 25 then connects the input terminal signal to the corresponding circuit of the main control board 30. The external support unit 24 may be, for example, a battery pack BAT, a capacitive trip device CTD, or an uninterruptible power system UPS. For example, in the case of a battery pack, the external support unit 24 connects the signal to the DC input terminal of the DC power supply altering circuit 185 and the AC input terminal of the buck unit of the voltage detecting device 12 via the external power source connecting unit 25. The external support unit 24 is, for example, a battery pack and can be used as one of the power sources required for the circuit breaker trip circuit operation. The step-down unit of the voltage detecting device 12 is also connected to the AC input terminal via the external power source connecting unit 25, and is converted into a DC power source via an AC/DC converting circuit 184. The AC/DC converting circuit 184 is generally bridge rectifier filtering. The converted DC power source, and the power output from the connected external support unit 24, are simultaneously connected to the DC power supply altering circuit 185, which is when the output from the voltage detecting device 12 buck unit is powered. Preferably, the DC power output of the AC/DC conversion circuit 184 is selected, thereby charging the capacitor storage circuit 190, and using the capacitor to store the power required to trip the loop. If the buck unit of the voltage detecting device 12 is disabled, the DC power altering circuit 185 selects the power of the external supporting unit 24 to charge the capacitor storing circuit 190. The DC power altering circuit 185 can usually be implemented using a 2A2B1C relay module or a switching module having the same function (not shown). The output power of the DC power altering circuit 185 (ie, the output power of the capacitor storage circuit 190) and the power supply of the connected external support unit 24 are simultaneously input to the DC power parallel output circuit 191, and the DC power is connected in parallel with the output circuit 191 and stored as a capacitor. The power of the circuit 190 is given as a priority The power supply required to trip the loop. The DC power supply parallel output circuit 191 can usually be realized by using a 2A2B1C relay module or a switching module having the same function (not shown). The output of the external support unit 24, the capacitor storage circuit 190, and the DC power parallel output circuit 191 can be respectively connected to the detection circuit and the display unit, such as the header and the seven segments, in order to facilitate the inspection of the state of the loop power supply circuit 18. Display or other liquid crystal display panel (not shown). The detection circuit is provided with a voltage comparison circuit to determine whether the voltage is higher than a predetermined value to perform necessary warning.

The external power connection unit 25 also connects the external power signal to the internal voltage comparison unit 180. The internal voltage comparison unit 180 is, for example, a voltage-dividing and falling current circuit, and is isolated by the optically coupled wafer to detect the power status of each phase sequence. (Electric/No Power), and the signal is input to the microcontroller sequence control unit 183. The microcontroller sequence control unit 183 determines whether the power circuit has a fault condition such as an owing phase, a reverse power transmission, or a trip, according to the presence or absence of each phase sequence voltage signal (such as R, S, T, U, V, and W phases). And correspondingly displayed by the status display unit 23 to perform corresponding warnings.

As shown in the circuit diagram of the current detecting device (the current transformer) shown in FIG. 2, the wiring of the side branch path is connected to the trip circuit connecting unit 26. The trip circuit connection unit 26 electrically connects the external device device connecting unit 22 and each contact to form a trip circuit, and is electrically connected to the trip circuit power supply circuit 18, and the side branch path of FIG. 2 is turned on. The side branch current of the trip circuit connecting unit 26 and the output of the DC power parallel output circuit 191 are connected to the power automatic switching circuit 20, and the power automatic altering circuit 20 preferentially selects the power source from the DC power parallel output circuit 191, DC. When the power supply of the power parallel output circuit 191 is disabled, it switches to the side branch path of the current detecting device 11 of the downflow unit. At this time, the protection power normally open contact 16 is turned on, and the circuit breaker closed auxiliary contact 14 is also turned on, and the current is turned on. The current of the detecting device 11 flows through the side branch path to drive the trip coil 15 to actuate the tripping mechanism 13 to isolate the accident point. Similarly, the power automatic alternating circuit 20, usually can be achieved using the 2A2B1C relay module or the same function switching module (not shown). The simulated fault occurrence command in FIG. 4 can be issued via the microcontroller sequence control unit 183 to facilitate testing of the operating state of the trip loop power supply circuit 18. The external command to drive the remote intelligent forced power down command contact 17 may also be commanded by the microcontroller sequence control unit 183 from the remote end to perform the trip coil 15 control of the circuit breaker 10. The external device device connecting unit 22 includes a protective electric power normally open contact 16 and two ends of the tripping coil 15 of the circuit breaker 10 or the distal intelligent forced power failure command contact point 17 as described above. The sensing device connecting unit 21 includes at least a detection of two or more signals of the current detecting device and the voltage detecting device.

Referring again to FIG. 5, the state display panel of the visual interface of the circuit breaker power-off trip device of the present invention is connected to the microcontroller sequence control unit 183, which can display the state of the jump circuit of the system and each Power status.

In summary, the circuit breaker power-off trip device of the present invention further improves the stability of the circuit breaker tripping loop system, and is highly industrially utilized, and in the relevant products on the market and the approved patent announcements, It does not see the same technical features as the essence of this creation, and also meets the statutory patent application requirements of novelty and progress. To apply for a patent application in accordance with the law, you are requested to give the examination committee an early grant of the patent to ensure the applicant's rights and interests. However, the only one disclosed in this case is the preferred embodiment of this creation. It is not possible to limit the scope of the creation of this creation. Any equivalent change or modification made in accordance with the spirit of this creation still covers the scope of patent application for this creation. in.

Claims (2)

A circuit breaker power-off trip device is electrically connected to a power circuit, and the power circuit has at least one trip coil for disconnecting the circuit breaker of the power circuit to disconnect the trip mechanism of the circuit breaker The circuit breaker; and a voltage detecting device disposed on the power circuit, the voltage detecting device includes a step-down unit for reducing an output voltage; and a current disposed on the power circuit a detecting device, the current detecting device includes a downflow unit for reducing an output current; and at least one protective power device disposed on the power circuit, the protection device is set to protect the electrical circuit according to the state of the power system line The safety setting value is at least one of current, ground, voltage, frequency, temperature, etc., when the value of the detecting device is greater than the electrical safety setting value, the protective power switch is normally open and the contact is activated; and the circuit breaker is powered off. The off device includes: a main control substrate, the main control substrate electrically connected includes an external power connection unit, an internal voltage comparison unit, and a microcontroller sequential control unit a tripping loop power supply circuit, a capacitor energy storage circuit, a sensing device connecting unit, an external device device connecting unit, a tripping loop connecting unit, a state display unit; a tripping loop power supply circuit, electrically connecting micro The controller sequence control unit uses the appropriate power output as the trip circuit to drive the electric energy; a capacitor storage circuit electrically connects the AC/DC conversion circuit in the loop circuit power supply circuit to store the appropriate DC power An external power connection unit electrically connecting external AC power and DC power to the main control base An internal voltage comparison unit electrically connected to the external power connection unit, the sensing device connection unit, and the status display unit; a microcontroller sequential control unit electrically connected to the external power connection unit, the sensing device connection unit, and the internal voltage The comparing unit selects an appropriate electric energy to be electrically connected to the tripping loop power supply circuit through an internal setting sequence; a tripping loop connecting unit, the tripping loop connecting unit is on the main control substrate, and the external device connecting unit is electrically connected to each other The connection connection forms a trip circuit, and is electrically connected to the trip circuit power supply circuit; a sensing device connection unit, the sensing device connection unit includes at least two detection units of the current detection device and the voltage detection device, The protection device is electrically connected to the power circuit; an external device device connection unit, the external device device connection unit includes at least one protection power switch normally open contact, two ends of the circuit breaker trip coil or an external forced command a state display unit that displays the state of the system trip circuit and each power source A circuit breaker power-off trip device can be based on current source power or voltage source power, rectified into DC power, and then stored by the capacitor as DC power or external power, provided by the jump sequence power supply circuit of the microcontroller sequential control unit Disengaging the electric energy, forming a complete tripping circuit through the tripping loop connecting unit, and driving the tripping coil of the circuit breaker to interlock the circuit breaker tripping mechanism to open the circuit breaker when the auxiliary circuit is closed and actuated . A circuit breaker power-off trip device: The electrical circuit is electrically connected to a power circuit, and the power circuit has at least one tripping coil for disconnecting the circuit breaker of the power circuit to interlock the tripping mechanism of the circuit breaker to open the circuit breaker; At least one voltage detecting device on the power circuit, the voltage detecting device includes a step-down unit for reducing the output voltage; and at least one current detecting device disposed on the power circuit, the current detecting device The measuring device comprises a downflow unit for reducing the output current; and at least one protection power device disposed on the power circuit, the protection power setting at least one or more of the protection electrical safety setting values according to the power system line state Such as current, ground, voltage, frequency, temperature, etc., when the value of the detecting device is greater than the electrical safety setting value, the protective power switch normally opens and closes; and the circuit breaker power-off device includes: a main control substrate, the main control substrate electrically connected comprises an AC-DC conversion circuit, a tripping loop power supply circuit, a capacitor storage circuit, and a power supply automatic alternating current a sensing device connecting unit, an external device device connecting unit, a state display unit, an AC/DC converting circuit, the AC/DC converting circuit is electrically connected to the voltage detecting unit of the voltage detecting device, or externally connecting AC power, and alternating current It can be converted into DC power, and the DC energy can be electrically connected to the capacitor energy storage by capacitor energy storage; a tripping loop power supply circuit, at least electrically connected to the voltage detecting device, the voltage reducing unit, the current detecting device, the downflow unit or the external connection Supporting power supply; a capacitor energy storage circuit, the capacitor energy storage circuit is electrically connected to the AC/DC conversion circuit in the loop power supply circuit, and the proper DC power is stored; a power automatic alternating circuit, the electrical connection jump loop power circuit Capacitor energy storage circuit The power output is used as the trip circuit driving power; a sensing device connecting unit, the sensing device connecting unit includes at least two detecting units of the current detecting device and the voltage detecting device, and is electrically connected to the power circuit The protection device; the external device device connecting unit, the external device device connecting unit comprises at least a protective electric power normally open contact, a circuit breaker jump coil end or an external forced command contact; a state display unit The state display unit can display the state of the system tripping loop; a circuit breaker power-off trip improving device can be rectified into DC power and then stored by the capacitor as DC power or external power according to current source power or voltage source power. The automatic alternating circuit of the power supply provides tripping driving power and then serially connecting the protective electric power to the normally open contact point, or protecting the electric power normally open contact point and then connecting the external forced command contact to be turned on. When the circuit breaker is closed and the auxiliary contact is actuated, The tripping coil of the circuit breaker is driven to interlock the circuit breaker tripping mechanism to open the circuit breaker.