CN220401486U - Mobile power grid direct current emergency power supply system based on capacitor energy storage - Google Patents
Mobile power grid direct current emergency power supply system based on capacitor energy storage Download PDFInfo
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- CN220401486U CN220401486U CN202321908015.9U CN202321908015U CN220401486U CN 220401486 U CN220401486 U CN 220401486U CN 202321908015 U CN202321908015 U CN 202321908015U CN 220401486 U CN220401486 U CN 220401486U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 64
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 13
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- 238000012544 monitoring process Methods 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims description 10
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- 230000033228 biological regulation Effects 0.000 claims description 3
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- 230000005855 radiation Effects 0.000 claims description 2
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- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
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Abstract
The utility model relates to the technical field of transformer substation direct-current power supply equipment, in particular to a mobile power grid direct-current emergency power supply system based on capacitor energy storage, which comprises a box body, a microcomputer direct-current measurement and control device, a rectifying module, an insulation monitoring device, an intelligent transmitting instrument, an alternating-current power supply input idle-open, a rectifying module output idle-open, a switching-on power supply output idle-open and a control power supply output idle-open, an energy storage capacitor, a voltage regulating silicon chain, alternating-current power supply input sockets, a switching-on female output socket, a control female output socket, a wire storage box, a heat dissipation fan and a lifting handle, universal wheels, wherein the universal wheels are assembled at the bottom of the box body, and input and output wires are arranged in the wire storage box. The mobile power grid direct current emergency power supply system based on capacitor energy storage is flexible in dispatching, is started immediately, is simple and quick in wiring, and has high popularization and application values in the power supply and distribution field.
Description
Technical Field
The utility model relates to the technical field of transformer substation direct-current power supply equipment, in particular to a mobile power grid direct-current emergency power supply system based on capacitor energy storage, which takes a capacitor as an energy storage unit, realizes charging control on the energy storage capacitor through a capacitor charging automatic switching control module, and integrates all elements in a mobile box body at high level.
Background
The direct current system of the transformer substation can provide stable and reliable direct current power supply for control, closing, protection, automatic devices, microcomputer five-prevention systems and the like, and can also provide power supply for equipment such as accident lighting, UPS and the like when an accident of losing power of the alternating current power supply occurs, so that the power supply quality of the direct current system has a vital influence on stable power supply and safe operation of the transformer substation.
The existing direct current system of the transformer substation is two fixed cabinets consisting of a storage battery cabinet and a direct current power supply system cabinet, the direct current system is large in size and heavy and cannot be flexibly carried, and direct current system manufacturers are various, certain difficulty exists in preparing spare parts under the condition of complex equipment configuration, when the direct current system in the transformer substation breaks down suddenly, the direct current system in the transformer substation cannot be recovered in a short time, the direct current system of the transformer substation is completely powered off, in-station control, signal, protection and automatic devices are completely disabled, and relay protection devices and circuit breakers are refused to act, so that serious override accidents and fire continuous vicious events are caused, and the safe and reliable operation of the transformer substation and the safety and stability of a power grid are directly influenced. The current portable AC/DC mobile power supply in the market has the DC output of 12V/3A or 24V/10A, which can not meet the requirement of the rated input voltage and current value of the secondary equipment of the power grid. Therefore, a set of stable and reliable direct current emergency power supply equipment which is flexible to move and small in size and can provide large current is needed.
Disclosure of Invention
The utility model provides a movable power grid direct current emergency power supply system based on capacitor energy storage, which aims to improve the emergency repair speed of a direct current system, reduce the probability of accident expansion caused by direct current power loss and ensure the operation safety of a power grid.
In order to solve the technical problems, the utility model adopts the following technical scheme: the mobile power grid direct current emergency power supply system based on capacitor energy storage comprises a box body, a microcomputer direct current measurement and control device, a rectifying module, an insulation detection device, an intelligent transmitting instrument, an alternating current power supply input idle opening, a rectifying module output idle opening, a closing power supply output idle opening, a control power supply output idle opening, an energy storage capacitor, a voltage regulation silicon chain, an alternating current power supply input socket, a closing female output socket, a control female output socket, a wire storage box, a heat dissipation fan and a lifting handle, wherein the microcomputer direct current measurement and control device, the rectifying module, the insulation detection device, the intelligent transmitting instrument, the alternating current power supply input idle opening, the rectifying module output idle opening, the closing power supply output idle opening and the control power supply output idle opening are assembled at the upper part of the box body;
the AC power input socket is connected with an AC power input bus through an AC power input blank, the AC power input bus is connected with the input of a rectifying module, the output of the rectifying module is supplied with power to a closing bus and a voltage regulating silicon chain through the output blank of the rectifying module, the closing bus is connected with an energy storage capacitor, the energy storage capacitor is charged, the voltage regulating silicon chain is connected with a control bus, the energy storage capacitor is connected with a closing bus output socket through a closing power output blank, the control bus is connected with a control bus output socket through a control power output blank, and the rectifying module is also connected with a microcomputer DC measurement and control device;
the intelligent transmitting instrument comprises an alternating current bus voltmeter, a closing bus ammeter, a control bus voltmeter and a control bus ammeter; the alternating current bus voltmeter is connected with an alternating current power supply input bus and used for monitoring alternating current input voltage; the switching-on bus voltmeter is connected with a switching-on bus and used for monitoring the voltage of the switching-on bus; the switching-on bus ammeter is connected with a switching-on bus and used for monitoring the current of the switching-on bus; the control bus voltmeter is connected with the control bus and used for monitoring the voltage of the control bus; the control bus ammeter is connected with the control bus and monitors the current of the control bus; the alternating current bus voltmeter, the switching-on bus ammeter, the control bus voltmeter and the control bus ammeter upload the measurement parameters to the microcomputer direct current measurement and control device.
When the intelligent power transmission device is used, the AC power input socket is connected with an external power supply through a wire, the AC power input is turned on, the rectification module is turned on to output the power after the voltage display of the rectification module is stable, the intelligent transmission instrument is checked, the output red wire (positive electrode) and the black wire (negative electrode) are well connected with the positive electrode and the negative electrode of a load according to specific use conditions, and the output of the related switching-on power supply is turned on and the output of the control power supply is turned on.
According to the mobile power grid direct current emergency power supply system based on capacitor energy storage, the upper portion of the box body is further provided with the insulation detection device, the insulation detection device is connected to the closing bus in parallel through the fuse, the bus insulation condition in the direct current system is automatically monitored, the insulation detection device is further connected with the microcomputer direct current measurement and control device, and the bus insulation resistance value and the alarm state are transmitted to the microcomputer direct current measurement and control device.
The capacitor energy storage based mobile power grid direct current emergency power supply system is also provided with a capacitor charging automatic switching control module in the box body, the capacitor charging automatic switching control module comprises a J1 terminal, a J1 pin is externally connected with a switch-on bus, the inside of the capacitor charging automatic switching control module is connected with the cathode of a voltage stabilizing diode D12 through rectifier diodes D1 and D2 and current limiting resistors R22 and R23, the anode of the voltage stabilizing diode D12 is grounded, the cathode of the voltage stabilizing diode D12 is connected with the positive power supply port of an operational amplifier LM358, the negative power supply port of the operational amplifier LM358 is grounded, the cathode of the voltage stabilizing diode D12 is connected with the cathode of an adjustable precision voltage stabilizer TL431 through a current limiting resistor R3, the anode of the adjustable precision voltage stabilizer TL431 is grounded, the cathode of the adjustable precision voltage stabilizer TL431 is connected with the inverting input end of the operational amplifier LM358 through an input resistor R5 to provide a reference voltage for the LM358, the external part of a terminal J1 is connected with the positive electrode of an energy storage capacitor, the charging voltage of the energy storage capacitor is collected, the internal part of the terminal J1 is grounded through resistors R7 and R8, the resistors R7 and R8 are connected with the in-phase input end of an operational amplifier LM358 after being divided by an input resistor R4, the output end of the operational amplifier LM358 is connected with the base electrode of a triode Q1 through a resistor R6, diodes D6, D7 and D4, the emitter electrode of the triode Q1 is grounded through a resistor R9, the internal part of the terminal J1 is connected with the collector electrode of the triode Q1 through a diode D1, resistors R1 and R2, the coil of a relay K1 and a diode D11, the internal parts of the 6 and 7 pins of the terminal J1 are connected with the first normally-open contact of the relay K1, the internal parts of the terminal 4 and 5 pins are connected with the second normally-open contact of the relay K1, the external parts of the terminal J1 and the external parts of the terminal J7 are connected with a microcomputer direct current measurement and control device, the external part of the terminal 4 is connected with a switching bus, the external part of the terminal 5 is grounded through the coil of a switching relay, the positive electrode of the energy storage capacitor is connected with the closing bus through a current limiting resistor R1, and normally open contacts of the conversion relay are connected in parallel at two ends of the current limiting resistor R1.
If the voltage signal of the non-inverting input end of the operational amplifier LM358 is higher than the voltage signal of the inverting input end, a high potential is output, the triode Q1 is controlled to be conducted, the coil of the relay K1 is electrified, the two normally open contacts of the relay K1 are attracted, the coil of the conversion relay is electrified by the external loop of the terminals 4 and 5 of the J1, the normally open contacts of the conversion relay are attracted, the current limiting resistor R1 is short-circuited, the external loop of the terminals 6 and 7 of the J1 is used for opening a switching value signal for the microcomputer direct current measurement and control device, the fact that the energy storage capacitor is electrified at the moment is shown, the impact burnout caused by overcurrent on the rectifying module is avoided, and the current limiting and charging are not needed to be carried out by the serial current limiting resistor R1.
According to the portable power grid direct current emergency power supply system based on capacitor energy storage, the wire storage box is arranged on the left side of the box body and provided with the butterfly lock catch, so that wires can be conveniently stored in a concentrated mode; the heat radiation fan is arranged on the right side of the box body and is provided with an outer cover plate; the handles are uniformly distributed on two sides of the box body; four universal wheels are uniformly distributed at four corners of the bottom of the box body.
According to the capacitor energy storage-based mobile power grid direct current emergency power supply system, the rectification modules comprise three rectification modules which are operated in parallel, and the three rectification modules rectify one-phase alternating-phase voltage.
The mobile power grid direct current emergency power supply system based on capacitor energy storage further comprises a direct current terminal block, the voltage output end of the microcomputer direct current measurement and control device is connected with the voltage port of the direct current terminal block, one end of a measurement and control contact for outputting the idle switch of the alternating current power supply input and the idle switch of the rectifying module output and controlling the idle switch of the power supply output is connected with the opening terminal of the microcomputer direct current measurement and control device, and the other end of the contact is connected with the direct current terminal block. When the AC power supply is input into the idle switch, the rectifying module outputs the idle switch, the switching power supply outputs the idle switch and the control power supply outputs the idle switch to be closed, a switching value signal is given to the microcomputer direct current measurement and control device, and the microcomputer direct current measurement and control device can monitor the idle switch state.
The capacitor energy storage-based mobile power grid direct current emergency power supply system comprises 6 capacitors connected in parallel.
Compared with the prior art, the method has the following beneficial effects:
1. the device is a movable single box body with the size of 800 x 700 x 500mm, compared with two fixed direct current power supply cabinets with the size of 2260 x 800 x 600mm, the weight is obviously reduced, the volume is greatly reduced, the whole structure is particularly compact, the mobility of the device is higher, and the device can enter various application scenes with limited space more quickly and conveniently.
2. The device replaces the traditional storage battery by connecting 6 energy storage capacitors in parallel as an energy storage unit, and compared with the storage battery with eighteen sections, the storage battery has smaller volume and higher charging speed, can output hundreds of amperes of large current instantaneously, can continuously work for a long time under the condition of inputting an alternating current power supply, and ensures the reliability of power supply.
3. The device can still provide short-time operation power for the secondary system of the transformer substation under the condition that the input of an alternating current power supply is lost.
4. The device can automatically manage the charging of the energy storage capacitor, and the developed capacitor charging automatic switching control module can carry out current-limiting charging on the energy storage capacitor so as to prevent the energy storage capacitor from burning the high-frequency rectifying module when the charging current of the energy storage capacitor is overlarge in the initial stage of charging.
5. The device is an independent complete direct current power supply system, can be directly and quickly connected into the direct current system for application, is not limited by the complex configuration condition of the original direct current system, can be suitable for different substations, and has strong universality.
6. The device adopts aviation plug and socket, uses it to carry out input and output wire connection, plug and play, and the instant messenger opens promptly, and quick parallel connection uses, avoids appearing the wiring error under the emergency, has greatly shortened accident rescue time.
7. Four corners of the bottom of the box body of the device are provided with four universal wheels capable of braking, four stainless steel folding spring handles are arranged on two sides of the box body, mobility and portability are enhanced, scheduling is more flexible, and emergency response is faster.
The mobile power grid direct current emergency power supply system based on capacitor energy storage is flexible in dispatching, can be started immediately, is simple and fast in wiring, can be used for seamless and quick connection, and can be used for avoiding the situation that a direct current system of a transformer substation is completely powered off, a control device, a signal device, a protection device and an automatic device in the transformer substation are completely paralyzed, and serious override accidents and fire continuous vicious events are caused if accidents occur. The device is used as a mobile direct current power supply system with stable performance and perfect functions, can be widely applied to various occasions such as maintenance of direct current systems of power plants, substations and distribution stations, emergency rescue, inspection and acceptance of new stations, equipment debugging, direct current system transformation and the like, and has high popularization and application values in the field of power supply and distribution.
Drawings
Fig. 1 is a schematic circuit diagram of the present utility model.
Fig. 2 is a schematic circuit diagram of a capacitor charging automatic switching control module.
Detailed Description
The utility model provides a portable electric wire netting direct current emergency power source system based on condenser energy storage, the power distribution box comprises a device box body, assemble microcomputer direct current measurement and control device in box upper portion, high frequency rectifier module, insulation detection device, intelligent transmitter instrument, the empty switch of alternating current power input, rectifier module output is empty switch, switch on power output is empty switch on, control power output is empty switch on, assemble the energy storage capacitor in box internal front portion, assemble the voltage regulation silicon chain at the box internal rear portion, assemble the inside electric capacity automatic switch control module that charges of box, assemble the alternating current power input socket in the box both sides, close female output socket, female output socket of accuse, supporting pluggable aviation plug, input output wire and wire receiver, side by side double-blower fan radiator fan, four sets of stainless steel folding spring handles, assemble the carbon steel bearing universal wheel in the box bottom.
The intelligent transmitting instrument comprises an alternating current bus voltmeter, a closing bus ammeter, a control bus voltmeter and a control bus ammeter. The alternating current bus voltmeter is connected with an alternating current power supply input bus and used for monitoring alternating current input voltage; the switching-on bus voltmeter obtains a switching-on bus voltage signal and monitors the switching-on bus voltage; the switching-on bus ammeter adopts a 100A/75mV shunt to obtain a switching-on bus current signal, and monitors the switching-on bus current; the control bus voltmeter and the control bus ammeter are used for monitoring the voltage and current conditions of the control bus in the same way, and the measured parameters are uploaded to the microcomputer direct current measurement and control device. PE wires of the intelligent transmitting instrument are connected with the grounding bus.
The alternating current power input socket, the combined female output socket and the control female output socket are aviation sockets and are arranged and installed on the left side of the box body, and an outer cover plate is arranged to prevent personnel from touching by mistake. The alternating current power supply input socket is opened by the alternating current power supply input, three-phase alternating current power supply is provided for the high-frequency rectification module, and PE wires of the alternating current power supply input socket are connected with the grounding bus.
The high-frequency rectification module comprises a first high-frequency rectification module, a second high-frequency rectification module and a third high-frequency rectification module, the three high-frequency rectification modules are output to run in parallel, an alternating current power supply is converted into direct current, and the direct current power supply is output to be supplied to a closing bus and a control bus through a rectifier, and meanwhile an energy storage capacitor is charged and is communicated with a microcomputer direct current measurement and control device. The high-frequency rectification module I, the high-frequency rectification module II and the high-frequency rectification module III are respectively used for rectifying the alternating current phase voltage, and PE wires of the high-frequency rectification modules are connected with the grounding bus.
The energy storage capacitor comprises 6 capacitors of 30000 mu F/350V, and is connected in parallel with the high-frequency rectification module through a current limiting resistor R1 and is output through an output air switch of a switching-on power supply.
The capacitor charging automatic switching control module is characterized in that a terminal 2 pin collects charging voltage of the energy storage capacitor, a current limiting resistor R1 is connected into a closing bus in series at the initial stage of charging the energy storage capacitor, the energy storage capacitor is subjected to current limiting charging, the high-frequency rectification module is prevented from being burnt out due to overlarge charging current, when the charging voltage rises to be more than 185V, a normally open contact of a switching relay JDQ (JQX-58F) is controlled to be in conduction by the terminals 4 and 5 pins of the capacitor charging automatic switching control module, the current limiting resistor R1 is short-circuited, influence of the current limiting resistor R1 on output of the closing bus is avoided, and the action state is transmitted to the microcomputer direct-current measurement and control device.
The voltage regulating silicon chain is used for supplying power to the control bus after automatically regulating the output voltage of the high-frequency rectifying module, and outputting the power through the control power output air-on and control bus output socket.
The insulation detection device is connected to the closing bus in parallel through a fuse, automatically monitors the insulation condition of the bus in the direct current system, and transmits the insulation resistance value and the alarm state of the bus to the microcomputer direct current measurement and control device. The PE line of the insulation detection device is connected with the grounding bus.
The microcomputer direct current measurement and control device monitors, detects and controls the whole direction of the rectifying module, the energy storage capacitor, the bus voltage and the bus insulation to the ground, and manages the direct current power supply system. And PE wires of the microcomputer direct current measurement and control device are connected with a grounding bus. The 24V voltage output end of the microcomputer direct current measurement and control device is connected with a voltage port of a 24V direct current terminal block, one end of a measurement and control contact of an alternating current power supply input idle switch, a rectification module output idle switch, a switching power supply output idle switch and a control power supply output idle switch is connected with the microcomputer direct current measurement and control device, the other end of the contact is connected with the 24V direct current terminal block, and the alternating current power supply input idle switch, the rectification module output idle switch, the switching power supply output idle switch and the control power supply output idle switch can switch on a switching value signal for the microcomputer direct current measurement and control device.
The box body is 800-700-500 mm in size, is made of 304 stainless steel frameworks and is made of ABS pattern panels.
The input and output wires and the wire storage box thereof are arranged on the left side of the box body and are provided with butterfly locks, so that the wires are convenient to be stored in a concentrated mode; the side-by-side double-fan radiating fan is arranged on the right side of the box body and is provided with an outer cover plate; the four sets of stainless steel folding spring handles are uniformly distributed on two sides of the box body; the four carbon steel bearing universal wheels capable of braking are uniformly distributed at four corners of the bottom of the box body.
To further explain the capacitor charging automatic switching control module of fig. 2, the external part of the terminal 1 of the charging automatic switching control module is externally connected with a 240V switching-on bus through a fuse, the internal part of the terminal 1 is connected with the cathode of a voltage stabilizing diode D12 through rectifying diodes D1 and D2 and current limiting resistors R22 and R23, the anode of the voltage stabilizing diode D12 is grounded, the cathode of the voltage stabilizing diode D12 is connected with the positive power supply port of an operational amplifier LM358, the voltage stabilizing diode D12 stabilizes 240V to 12V to supply power to the operational amplifier LM358, the negative power supply port of the operational amplifier LM358 is grounded, the cathode of the voltage stabilizing diode D12 is connected with the cathode of an adjustable precision voltage stabilizer TL431 through a current limiting resistor R3 and stabilized to 2.5V through the adjustable precision voltage stabilizer TL431, the anode of the adjustable precision voltage stabilizer TL431 is grounded, the cathode of the adjustable precision voltage stabilizer TL431 is connected with the inverting input end of the operational amplifier LM358 through an input resistor R5, the reference voltage is provided for the LM358, the outside of the J1 terminal 2 pin is connected with the positive electrode of the energy storage capacitor, the charging voltage of the energy storage capacitor is collected, the inside of the 2 pin is grounded through resistors R7 and R8, the resistors R7 and R8 are connected into the in-phase input end of the operational amplifier LM358 after being divided, the output end of the operational amplifier LM358 is connected with the base electrode of the triode Q1 through a resistor R6, diodes D6, D7 and D4, the emitter electrode of the triode Q1 is grounded through a resistor R9, the inside of the J1 terminal 1 pin is connected with the collector electrode of the triode Q1 through a diode D1, a coil of the resistor R1 and R2 relay K1, the diode D11 is connected with the first normally open contact of the relay K1 in the 6 and 7 pins of the J1 terminal, the second normally open contact of the relay K1 is connected in the 4 and 5 pins, the outside of the J1 terminal 6 and 7 pins are connected with the microcomputer direct current measurement and control device through a 24V direct current terminal bar, the bus is connected in the outside of the 4 pins, the outside of the 5 feet is grounded through a coil of the conversion relay, the positive electrode of the energy storage capacitor is connected with the closing bus through a current limiting resistor R1, and the two ends of the current limiting resistor R1 are connected with normally open contacts of the conversion relay in parallel.
If the charging voltage of the energy storage capacitor is above 185V, the voltage signal of the non-inverting input end of the LM358 is higher than the voltage signal of the inverting input end, a high potential is output, the transistor Q1 is controlled to be turned on, the normally open contact of the relay K1 is closed, the external loop of the J1 terminal 4 and the 5 pin shorts the current limiting resistor R1 in fig. 1, the external loop of the J1 terminal 6 and the 7 pin opens the switching value signal to the microcomputer direct current measurement and control device, which means that the initial stage of charging the energy storage capacitor is spent at this time, the high frequency rectifying module is not burnt due to the impact of the overcurrent, and the current limiting charging of the serial current limiting resistor R1 is not needed.
When in use, the wire storage box is pulled open to take out the connecting wires; opening the sockets on the left side and the right side of the box body and the outer cover plate of the cooling fan; opening the upper cover of the box body, and checking that all the openings are in separated positions; an alternating current power input plug is inserted, a yellow, green and red three-core wire is connected with a 380-volt power phase line, a black wire is connected with a power zero wire, and a yellow-green wire is connected with a ground wire (PE wire); switching on the AC power supply input and switching on the AC power supply input after the three high-frequency rectification modules are stable in voltage display, checking various meters, and displaying the microcomputer DC measurement and control device correctly; according to specific use conditions, plugs related to a closing master and a control master are inserted, and then an output red line (positive electrode) and a black line (negative electrode) are connected with the positive electrode and the negative electrode of a load, so that the output of a closing power supply related to closing is opened and the output of a control power supply is opened.
The following matters need to be noted when in use: 1. the 5 cores of the ac power input plug must all be correspondingly connected. In particular, the black lines and the yellow-green lines must be connected reliably. Otherwise, faults such as instrument damage, direct current grounding failure alarm, loss of protection grounding, electrified device shell and the like are caused. 2. The red line of the output plug of the combining master and the control master is the positive electrode, and the black line is the negative electrode. Is correspondingly connected with the positive electrode and the negative electrode of the load, and cannot be connected by mistake. Otherwise, the instruments and equipment are damaged.
The utility model also has the following technical characteristics:
1. the device adopts the parallel energy storage capacitor as an energy storage unit, and can continuously work for a long time under the condition of alternating current power supply input.
2. The device can still provide short-time operation power for the secondary system of the transformer substation under the condition that the input of an alternating current power supply is lost.
3. The device automatically manages the energy storage capacitor, and the developed capacitor charging automatic switching control module can carry out current-limiting charging on the energy storage capacitor in the initial stage of charging.
4. The capacitor charging automatic switching control module adopts an operational amplifier LM358 as a voltage comparator, and compares the voltage of the charging voltage of the energy storage capacitor with a reference voltage value of 2.5V after the voltage is reduced, and outputs high (low) level to control a triode Q1, a relay K1 and JDQ (JQX-58F), thereby controlling whether a current limiting resistor R1 is connected in series into a closing bus charging loop or not to perform current limiting charging on the energy storage capacitor.
5. The device is an independent complete direct current power supply system, can be directly and quickly connected into a direct current system for application, is not limited by the complex configuration condition of the original direct current system, and can be suitable for different substations.
6. The device integrates all the elements in a mobile single box with a spatial dimension of 800 x 700 x 500 mm.
7. The device adopts aviation plug and socket, uses it to carry out input and output wire connection, plug and play, open promptly, quick connect application to be provided with outer apron.
8. Four carbon steel bearing universal wheels capable of braking are uniformly distributed at four corners of the bottom of the box body, and four stainless steel folding spring handles are arranged on two sides of the box body.
Claims (7)
1. Mobile electric wire netting direct current emergency power source system based on condenser energy storage, its characterized in that: the intelligent power supply system comprises a box body, a microcomputer direct current measurement and control device, a rectifying module, an intelligent transmitting instrument, an alternating current power supply input idle switch, a rectifying module output idle switch, a switching power supply output idle switch, a control power supply output idle switch, an energy storage capacitor, a voltage regulation silicon chain, alternating current power supply input sockets, a switching power supply output socket, a control power supply output socket, a wire storage box, a heat dissipation fan and a lifting handle, wherein the microcomputer direct current measurement and control device, the rectifying module, the intelligent transmitting instrument, the alternating current power supply input idle switch, the switching power supply output idle switch and the control power supply output idle switch are assembled in the box body; the AC power input socket is connected with an AC power input bus through an AC power input blank, the AC power input bus is connected with the input of a rectifying module, the output of the rectifying module is supplied with power to a closing bus and a voltage regulating silicon chain through the output blank of the rectifying module, the closing bus is connected with an energy storage capacitor, the energy storage capacitor is charged, the voltage regulating silicon chain is connected with a control bus, the energy storage capacitor is connected with a closing bus output socket through a closing power output blank, the control bus is connected with a control bus output socket through a control power output blank, and the rectifying module is also connected with a microcomputer DC measurement and control device; the intelligent transmitting instrument comprises an alternating current bus voltmeter, a closing bus ammeter, a control bus voltmeter and a control bus ammeter; the alternating current bus voltmeter is connected with an alternating current power supply input bus and used for monitoring alternating current input voltage; the switching-on bus voltmeter is connected with a switching-on bus and used for monitoring the voltage of the switching-on bus; the switching-on bus ammeter is connected with a switching-on bus and used for monitoring the current of the switching-on bus; the control bus voltmeter is connected with the control bus and used for monitoring the voltage of the control bus; the control bus ammeter is connected with the control bus and monitors the current of the control bus; the alternating current bus voltmeter, the switching-on bus ammeter, the control bus voltmeter and the control bus ammeter upload the measurement parameters to the microcomputer direct current measurement and control device.
2. The capacitor energy storage based mobile power grid direct current emergency power supply system according to claim 1, wherein: the upper part of the box body is also provided with an insulation detection device which is connected on the closing bus in parallel through a fuse, and the insulation detection device is also connected with a microcomputer direct current measurement and control device.
3. The capacitor energy storage based mobile power grid direct current emergency power supply system according to claim 2, wherein: the capacitor charging automatic switching control module is also assembled in the box body and comprises a J1 terminal, a 1 pin of the J1 terminal is externally connected with a switching-on bus, the inside of the capacitor charging automatic switching control module is connected with the cathode of a voltage stabilizing diode D12 through rectifier diodes D1 and D2 and current limiting resistors R22 and R23, the anode of the voltage stabilizing diode D12 is grounded, the cathode of the voltage stabilizing diode D12 is connected with the positive power port of an operational amplifier LM358, the negative power port of the operational amplifier LM358 is grounded, the cathode of the voltage stabilizing diode D12 is connected with the cathode of an adjustable precision voltage stabilizer TL431 through a current limiting resistor R3, the anode of the adjustable precision voltage stabilizer TL431 is grounded, the cathode of the adjustable precision voltage stabilizer TL431 is connected with the inverting input end of the operational amplifier LM358 through an input resistor R5 to provide a reference voltage for the LM358, the outside of the J1 terminal 2 pin is connected with the positive pole of the energy storage capacitor to collect the charging voltage of the energy storage capacitor, the inside of the pin 2 is grounded through resistors R7 and R8, the resistors R7 and R8 are connected into the non-inverting input end of an operational amplifier LM358 after being divided by an input resistor R4, the output end of the operational amplifier LM358 is connected with the base electrode of a triode Q1 through a resistor R6, a diode D7 and a diode D4, the emitter electrode of the triode Q1 is grounded through a resistor R9, the inside of the pin 1 of the J1 is connected with the collector electrode of the triode Q1 through a diode D1, the coils of the resistors R1 and R2 relay K1, the diode D11 is connected with the first normally open contact of the relay K1, the inside of the pin 6 and 7 of the terminal J1 is connected with the first normally open contact of the relay K1, the inside of the pin 4 and the pin 5 is connected with a microcomputer direct current device, the outside of the pin 4 is connected with a switching busbar, the outside of the pin 5 is grounded through the coil of a switching relay, the positive electrode of the energy storage capacitor is connected with the switching busbar through a current limiting resistor R1, the two ends of the current-limiting resistor R1 are connected with normally open contacts of the conversion relay in parallel.
4. A capacitor energy storage based mobile power grid direct current emergency power supply system according to claim 3, characterized in that: the wire storage box is arranged on the left side of the box body and is provided with a butterfly lock catch, so that wires can be conveniently stored in a concentrated mode; the heat radiation fan is arranged on the right side of the box body and is provided with an outer cover plate; the handles are uniformly distributed on two sides of the box body; four universal wheels are uniformly distributed at four corners of the bottom of the box body.
5. The capacitor energy storage based mobile power grid direct current emergency power supply system according to claim 4, wherein: the rectification modules comprise three rectification modules which are operated in parallel, and the three rectification modules rectify one-phase alternating current phase voltage respectively.
6. The capacitor energy storage based mobile power grid direct current emergency power supply system according to claim 5, wherein: the microcomputer direct current measurement and control device is characterized by further comprising a direct current terminal block, wherein the voltage output end of the microcomputer direct current measurement and control device is connected with a voltage port of the direct current terminal block, one end of a measurement and control contact for inputting an alternating current power supply into the idle switch, outputting an idle switch by a rectifying module and outputting an idle switch by a switching power supply and controlling the output of the power supply to be idle switch is connected with the microcomputer direct current measurement and control device, and the other end of the contact is connected with the direct current terminal block.
7. The capacitor energy storage based mobile power grid direct current emergency power supply system according to claim 6, wherein: the storage capacitor comprises 6 capacitors connected in parallel.
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