CN212183129U - Intelligent bypass quick-open switch - Google Patents

Abstract

The utility model relates to an electric power overhauls equipment, especially relates to intelligent bypass fast switch. The intelligent bypass quick-switching switch realizes quick access and non-inductive switching of a bypass system, improves the level of uninterrupted operation and improves the reliability of power supply. The intelligent controller comprises a circuit breaker module electrically connected with an intelligent controller module through a cable; the circuit breaker module comprises a main circuit, a three-phase current transformer, an incoming line side three-phase voltage sensor, an outgoing line side three-phase voltage sensor, a spring operating mechanism, a switch position signal module and a current and voltage secondary protection module; and the second limit shaft rotates through the opening linear driving mechanism to release the opening swing plate. The utility model has the characteristics of simple to operate, plug longe-lived.

Description

Intelligent bypass quick-open switch

Technical Field

The utility model relates to an electric power overhauls equipment, especially relates to intelligent bypass fast switch.

Background

Along with the rapid development of the urban construction process and the increase of the strength of newly building and transforming a power distribution network, the requirements of people on less power failure and even no power outage are higher and higher when planned maintenance and fault first-aid repair are carried out. At present, the distribution network overhead lines in various cities have fewer breaking switches, and when the overhead lines are overhauled or repaired, the power of the whole line is usually required to be cut off, or sudden operation faults of cable lines also need to be detected and repaired in a longer time; in addition, in the city, important power utilization units, major activities and the like all require high power supply reliability.

The maintenance of present distribution equipment, change, problem equipment overhauls or changes behind the disconnection upper reaches switch, and its process needs several hours, must cause electric power consumer's long-time power failure like this, causes economic loss and a great deal of inconvenience to the user.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to above problem, provide realize that bypass system inserts fast, noninductive switching, promotes the operation level of not having a power failure, improve the intelligent bypass fast switch that supplies power reliability.

The technical scheme of the utility model is that: the intelligent bypass quick-switching switch comprises a circuit breaker module electrically connected with an intelligent controller module through a cable;

the circuit breaker module comprises a main circuit, a three-phase current transformer, an incoming line side three-phase voltage sensor, an outgoing line side three-phase voltage sensor, a spring operating mechanism, a switch position signal module and a current and voltage secondary protection module;

the three-phase current transformer is arranged on the main loop, converts large current in a circuit into small current for an intelligent controller module to acquire data, and monitors and judges line current and faults of the intelligent controller module;

one end of the incoming line side three-phase voltage sensor and one end of the outgoing line side three-phase voltage sensor are electrically connected with the main circuit respectively; the other end of the incoming line side three-phase voltage sensor and the other end of the outgoing line side three-phase voltage sensor are respectively electrically connected with the current and voltage secondary protection module; reducing the high voltage on the power transmission line to the low voltage collected by the intelligent controller module, and using the intelligent controller module to perform electrical protection and automatic control on each fault of the power grid so as to realize the electrical isolation function of the primary system and the secondary system;

the three-phase current transformer, the incoming line side three-phase voltage sensor and the outgoing line side three-phase voltage sensor are electrically connected with the intelligent controller module through a current and voltage secondary protection module respectively;

the main circuit is provided with a main contact with an arc extinguishing function and is used for bearing or breaking load current or short-circuit current in a line within a specified time;

the main contact is separated and combined through the spring operating mechanism;

the switch position signal module is electrically connected with the intelligent controller module, fixedly arranged on the spring operating mechanism, used for providing the intelligent controller module with the on-off state of the main circuit and used for logically judging the position of the circuit breaker.

The intelligent controller module is electrically connected with the intelligent controller module and comprises an SF6 pressure sensor.

The spring operating mechanism comprises a power mechanism, a closing mechanism and a breaking mechanism;

the switching-on mechanism comprises a switching-on rotating shaft, a switching-on elastic mechanism, a switching-on stopping shaft I and a limiting shaft I and a switching-on linear driving mechanism;

the closing rotating shaft is vertically and movably arranged on the bedplate and rotates through the power mechanism;

the switching-on elastic mechanism comprises a first spring connecting head, a switching-on spring, a second spring connecting head and a first spring connecting shaft;

the first spring connecting head is L-shaped and is fixedly arranged at the top of the closing rotating shaft;

the spring connector II is fixedly connected to the bedplate through the limiting shaft I;

one end of the closing spring is fixedly connected with the first spring connector, and the other end of the closing spring is fixedly connected with the second spring connector;

the switching-on stopping device comprises a switching-on shaft and a switching-on swinging plate;

the brake closing shaft is movably arranged on the bedplate through a torsion spring I;

a limiting block matched with the closing swing plate is fixedly arranged on the power mechanism; the first limiting shaft is vertically and movably arranged on the bedplate and is reset through a first limiting spring;

the switching-on swing plate is fixedly sleeved on the switching-on shaft, the switching-on swing plate is limited through the first limiting shaft and the limiting block, and the switching-on spring is in an energy storage state;

a first release groove matched with the first closing swing plate is formed in the first limit shaft, the first closing swing plate is relieved of limit through the first release groove through rotation of the first limit shaft, and the closing rotating shaft rotates to enable the closing spring to reset;

the first limiting shaft rotates through the switching-on linear driving mechanism; the switching-on linear driving mechanism is fixedly arranged on the bedplate and is positioned on one side of the first limiting shaft;

the brake separating mechanism comprises a switch main shaft, a brake separating cam I, a brake separating spring, a brake separating connecting column, a brake separating cam II, an output shaft, a V-shaped swinging plate, a pushing wheel, a brake separating rotating shaft, a limiting rotating plate, a brake separating stop, a limiting shaft II and a brake separating linear driving mechanism;

the switch main shaft is vertically and movably arranged on the bedplate;

the first opening cam is fixedly arranged on the switch main shaft and is positioned below the bedplate;

the opening connecting column is vertically and fixedly arranged on the bedplate;

the opening spring is arranged below the bedplate, one end of the opening spring is fixedly connected with the opening connecting column, the other end of the opening spring is fixedly connected with the opening cam I, and the energy storage and non-energy storage functions of the opening spring are realized through the rotation of the switch main shaft;

the second opening cam is fixedly arranged on the switch main shaft and is positioned above the bedplate;

the V-shaped swing plate is fixedly arranged on the opening rotating shaft, and the opening rotating shaft is vertically and movably arranged on the bedplate;

the output shaft is horizontally arranged, one end of the output shaft is hinged with the V-shaped swing plate, and the other end of the output shaft is hinged with the second opening cam;

the pushing wheel is movably arranged on the V-shaped swinging plate; a transmission cam matched with the pushing wheel is arranged on the closing rotating shaft; the pushing wheel enables the brake separating spring to store energy through the pushing force of the transmission cam;

the limiting rotating plate is fixedly arranged on the opening rotating shaft and is positioned above the V-shaped swinging plate;

the brake separating brake comprises a brake separating shaft and a brake separating swing plate;

the opening brake shaft is rotatably arranged on the bedplate and is reset through a second torsion spring;

the opening swing plate is fixedly arranged at the top of the opening shaft;

the second limiting shaft is rotatably arranged on the bedplate and is reset through a second limiting spring;

a second release groove matched with one end of the opening swing plate is formed in the second limit shaft;

the limiting rotating plate is provided with a brake separating limiting block matched with the brake separating swinging plate;

the opening linear driving mechanism is fixedly arranged on the bedplate and is positioned on one side of the second limiting shaft;

and the second limit shaft rotates through the opening linear driving mechanism to release the opening swing plate.

The power mechanism comprises a motor, a speed reducer, a rotating shaft, a driving gear and a driven gear;

the speed reducer is fixedly arranged on the bedplate and rotates through the motor;

the rotating shaft is vertically and rotatably arranged on the bedplate, and the bottom of the rotating shaft is in transmission connection with the speed reducer;

the driving gear is fixedly sleeved on the rotating shaft;

the driven gear is fixedly connected to the closing rotating shaft and meshed with the driving gear.

The device also comprises an indicating mechanism; the indicating mechanism comprises an indicating rotating rod, a rotating rod cam and an indicating needle;

the indicating rotating rod is vertically and rotatably arranged on the bedplate and is positioned on one side of the rotating shaft;

the rotating shaft is provided with a first cam which is fixedly connected and is positioned above the driving gear;

the first cam is provided with a sliding rod fixedly connected with the first cam;

the rotating rod cam is horizontally and fixedly arranged on the indicating rotating rod and is provided with a sliding chute matched with the sliding rod;

the indicating needle is fixedly arranged at the top of the indicating rotating rod, and the rotating indicating function of the indicating needle is realized through the movement of the sliding rod in the sliding groove;

the switching-on linear driving mechanism and the switching-off linear driving mechanism are respectively electromagnet telescopic rods.

The current-voltage secondary protection module comprises a Va protection circuit and an IA protection circuit;

the Va protection circuit comprises a gas protection tube D3 and a sampling resistor R5 which are connected in parallel;

the IA protection circuit comprises a capacitor C1, a voltage dependent resistor R1, a voltage dependent resistor R2, a resistor R3, a resistor R4, a trigger diode Q1 and a trigger diode Q2;

the first ends of the capacitor C1, the piezoresistor R1, the piezoresistor R2 and the trigger diode Q2 are respectively electrically connected with the first input end IA;

the piezoresistor R2 is connected with the resistor R3 in series;

the second ends of the capacitor C1, the voltage dependent resistor R1, the resistor R3 and the trigger diode Q2 are respectively electrically connected with a second input end IN;

one end of the resistor R4 is connected between the voltage dependent resistor R2 and the resistor R3, and the other end is electrically connected with the trigger diode Q2 through the trigger diode Q1.

The utility model comprises a breaker module electrically connected with an intelligent controller module through a cable; the circuit breaker module comprises a main circuit, a three-phase current transformer, an incoming line side three-phase voltage sensor, an outgoing line side three-phase voltage sensor, a spring operating mechanism, a switch position signal module and a current and voltage secondary protection module; the overcurrent and open circuit protection function is realized; rapidly detecting the phase sequence of the bypass side and the original power side; detecting a non-voltage switching-on function; the cable adopts the quick direct-insert joint of dedicated flexible cable, has simple to operate, plug long-lived characteristics.

According to the scheme, the bypass uninterrupted operation is carried out, so that the core competitiveness is improved, the technical progress and the equipment upgrading are promoted, and the power supply reliability of equipment and a power grid is improved. Meanwhile, planned maintenance and fault first-aid repair work is completed safely and quickly, the contradiction between equipment power failure maintenance and uninterrupted power supply to users is effectively solved, the safe power supply service quality is greatly improved, and a solid foundation is laid for building a strong, reliable, economical and efficient power distribution system, meeting diversified requirements of users and realizing sustainable development of a power grid.

Drawings

FIG. 1 is a schematic diagram of a circuit structure for lapping a bypass operation loop,

FIG. 2 is a schematic diagram of a circuit structure in a power-supply bypass reverse operation,

FIG. 3 is a schematic circuit diagram of a bypass operation loop for power restoration,

figure 4 is a schematic diagram of the circuit configuration when power is restored,

FIG. 5 is a schematic diagram of the electrical connection between the bypass fast-switching switch and the controller (the controller includes a controller simulation module and a controller CPU module),

figure 6 is a schematic diagram of the structure of a current-voltage secondary protection module,

figure 7 is a schematic diagram of the structure of the IA protection circuit,

figure 8 is a schematic diagram of the structure of the Va protection circuit,

figure 9 is a block diagram of the schematic design of a controller,

figure 10 is a schematic diagram of the construction of a bypass quick-open box,

figure 11 is a schematic top view of the bypass quick-open box,

figure 12 is a schematic perspective view of the spring operated mechanism,

figure 13 is a schematic perspective view of the spring operated mechanism illustrating a second,

fig. 14 is a schematic perspective view of the closing mechanism (with parts hidden for clarity),

fig. 15 is a schematic perspective view showing the first opening mechanism (with parts hidden for clarity),

fig. 16 is a schematic perspective view of the second opening mechanism (with parts hidden for clarity),

fig. 17 is a schematic perspective view showing the third structure of the opening mechanism (in order to clearly show the structure, parts are hidden),

fig. 18 is a schematic perspective view of the opening mechanism (the structure is shown in detail, and parts are hidden),

fig. 19 is a schematic perspective view of the opening mechanism (with parts hidden for clarity),

in the figure, 1 is a power mechanism 1, 11 is a motor, 12 is a speed reducer, 13 is a rotating shaft, 14 is a driving gear, 15 is a driven gear,

2 is a closing mechanism, and the closing mechanism,

21 is a closing rotating shaft, 211 is a transmission cam, 22 is a closing elastic mechanism, 221 is a spring connector I, 222 is a closing spring,

231 is a closing shaft, 232 is a closing swing plate,

24 is a first limit shaft, 241 is a first release groove, 25 is a linear closing driving mechanism,

3 is a brake-separating mechanism, and the brake-separating mechanism,

31 is a switch main shaft, 32 is a first opening cam, 33 is an opening spring, 34 is an opening connecting column, 35 is a second opening cam, 36 is an output shaft, 37 is a V-shaped swinging plate, 38 is a pushing wheel, 39 is an opening rotating shaft, 310 is a limiting rotating plate, 311 is an opening brake, 312 is a limiting shaft II, 313 is an opening linear driving mechanism,

3111 is a brake-separating shaft, 3112 is a brake-separating swing plate,

4 is an indicating mechanism, 41 is an indicating rotating lever, 42 is a rotating lever cam, and 43 is an indicating needle.

Detailed Description

The utility model is shown in figures 1-19; the intelligent bypass quick-switching switch comprises a circuit breaker module electrically connected with an intelligent controller module through a cable;

the model of an intelligent controller module in the scheme is BC-LOCK644610, a DSP + ARM hardware architecture is adopted, requirements of protection, control and communication are met, the function of non-voltage rapid automatic closing on one side of a circuit breaker is detected according to a set program language, and the intelligent controller module has a nuclear phase detection function. The intelligent controller module is configured with one path of 4G (101 specification) and one path of RS232 serial port for connecting with the wireless LORA, the user bypass system is used for detection, and the other path of RS232 is used for debugging.

The circuit breaker module comprises a main circuit, a three-phase current transformer, an incoming line side three-phase voltage sensor, an outgoing line side three-phase voltage sensor, a spring operating mechanism, a switch position signal module and a current and voltage secondary protection module;

the three-phase current transformer is arranged on the main loop, converts large current in a circuit into small current of 1A, and is used for an intelligent controller module to acquire data, monitor line current and judge faults;

one end of the incoming line side three-phase voltage sensor and one end of the outgoing line side three-phase voltage sensor are electrically connected with the main circuit respectively; the other end of the incoming line side three-phase voltage sensor and the other end of the outgoing line side three-phase voltage sensor are respectively electrically connected with the current and voltage secondary protection module; reducing the high voltage on the power transmission line to the low voltage collected by the intelligent controller module, and using the intelligent controller module to perform electrical protection and automatic control on each fault of the power grid so as to realize the electrical isolation function of the primary system and the secondary system;

the three-phase current transformer, the incoming line side three-phase voltage sensor and the outgoing line side three-phase voltage sensor are electrically connected with the intelligent controller module through a current and voltage secondary protection module respectively; when the secondary circuit is not connected with the intelligent controller module or is not firmly connected with the intelligent controller module, the secondary side of a three-phase Circuit Transformer (CT) is effectively ensured not to be open-circuited, and accidents caused by high voltage on the secondary side of the three-phase circuit transformer are avoided;

the main circuit is provided with a main contact with an arc extinguishing function and is used for bearing or breaking load current or short-circuit current in a line within a specified time;

the main contact is separated and combined through the spring operating mechanism;

the switch position signal module is electrically connected with the intelligent controller module, fixedly arranged on the spring operating mechanism, used for providing the intelligent controller module with the on-off state of the main circuit and used for logically judging the position of the circuit breaker.

As shown in fig. 5, PS (GAS auxiliary contact) is a normally closed contact, HS (manual latching switch) is a normally open contact, CT is a current transformer, MS is a travel switch, HS is a manual latching contact, PS is a GAS contact, M is a motor, RA is an aviation socket, RB is an external power supply terminal, HV-R is a voltage sensor, and WCN is a non-stored energy signal.

As shown in fig. 10, the box body of the bypass quick-switching switch is provided with 6 quick high-voltage cable plugging seats, and the clamping buckle type design is adopted for connecting the main loop and realizing quick lap joint of the bypass loop in the bypass live-line operation. 2 groups of 6 impedance voltage sensors (secondary voltage can be adjusted according to requirements) are arranged in the bypass quick-opening switch box body on the power side A, B, C and the load side R, S, T; the precision (-25 ℃ to 80 ℃) is stably kept at 0.5 percent, and the precision of the voltage signals at two sides of the collected circuit breaker can be guaranteed.

The bypass quick-opening box body is made of stainless steel materials, and an epoxy resin coating layer is arranged on the surface of the box body, so that the insulativity and the sealability of the box body are improved. The breaker is arranged in the box body in a sealing mode, SF6 gas with a specified value is filled in the box body, the capability of closing and opening short-circuit fault current is reliably guaranteed by adopting an SF6 gas rotary arc extinguishing mode, and the rated insulation strength and the rated closing and breaking capability can be guaranteed even if the pressure of the gas is reduced due to gas leakage. Further optimizing, an SF6 gas pressure gauge is additionally arranged on the bypass quick-opening switch box body, and when the pressure gauge indicates a green area, the pressure is normal; the pointer indication in the red area indicates gas leakage and should be repaired or replaced in time.

The upper part of the bypass quick-opening box body and the bottom of the rear end are respectively provided with a stainless steel grounding stud with the diameter of 13 and a grounding mark for installing a grounding wire. The structure can be easily connected with 22-38mm copper wires and ground wires without using additional auxiliary clips. In addition, the left and right side supporting legs at the rear part of the bypass quick-opening box body are provided with phi 13 holes for installing grounding wires.

The intelligent controller module is electrically connected with the intelligent controller module and comprises an SF6 pressure sensor. I.e., the PS gas contact in fig. 5.

The spring operating mechanism comprises a power mechanism 1, a closing mechanism 2 and a separating mechanism 3;

the closing mechanism 2 comprises a closing rotating shaft 21, a closing elastic mechanism 22, a closing stopping and limiting shaft I24 and a closing linear driving mechanism 25;

the closing rotating shaft 21 is vertically and movably arranged on the bedplate and rotates through the power mechanism 1;

the switching-on elastic mechanism 22 comprises a first spring connecting head 221, a switching-on spring 222, a second spring connecting head and a first spring connecting shaft;

the first spring connecting head 221 is L-shaped and is fixedly arranged at the top of the closing rotating shaft 21;

the spring connector II is fixedly connected to the bedplate through the limiting shaft I24; the limiting shaft is vertically and fixedly arranged on the bedplate; the spring connector II is fixedly connected to the top of the limiting shaft;

one end of the closing spring 222 is fixedly connected with the first spring connector 221, and the other end of the closing spring is fixedly connected with the second spring connector;

the closing prevention means includes a closing shaft 231 and a closing swing plate 232;

the brake closing shaft 231 is movably arranged on the bedplate through a torsion spring I; the first torsion spring is fixedly arranged at the bottom of the switching-on shaft 231, and the rotary reset function of the switching-on shaft 231 is realized through the torsion spring;

a limiting block matched with the closing swing plate 232 is fixedly arranged on the power mechanism 1 (a driven gear 15 in the power mechanism 1); the section of the limiting block in the scheme is circular;

the first limiting shaft 24 is vertically and movably arranged on the bedplate and is reset through a first limiting spring; the top and the bottom of the first limiting shaft 24 on the spring operating mechanism are respectively provided with a first limiting column, the first limiting shaft is provided with a first limiting spring, the first limiting column is matched with the first limiting column, the first limiting column is used for limiting the rotating range of the first limiting shaft 24, and the first limiting spring is arranged between the first limiting column and the first limiting plate and resets through the first limiting spring after the first limiting shaft 24 is rotated to a certain angle by external force.

The closing swing plate 232 is fixedly sleeved on the closing shaft 231, and the closing swing plate 232 is limited through the first limiting shaft 24 and the limiting block, and the closing spring 222 is in an energy storage state (namely, stretched);

a first release groove 241 matched with the first closing swing plate 232 is formed in the first limit shaft 24, the first closing swing plate 232 is enabled to release limiting through the first release groove 241 through rotation of the first limit shaft 24, and the rotating closing shaft 21 rotates to enable the closing spring 222 to reset;

the first limit shaft 24 rotates through the closing linear driving mechanism 25; the closing linear driving mechanism 25 is fixedly arranged on the bedplate and is positioned on one side of the first limiting shaft 24;

the brake separating mechanism 3 comprises a switch main shaft 31, a brake separating cam I32, a brake separating spring 33, a brake separating connecting column 34, a brake separating cam II 35, an output shaft 36, a V-shaped swinging plate 37, a pushing wheel 38, a brake separating rotating shaft 39, a limiting rotating plate 310, a brake separating stopping part 311, a limiting shaft II 312 and a brake separating linear driving mechanism 313;

the switch main shaft 31 is vertically and movably arranged on the bedplate;

the first opening cam 32 is fixedly arranged on the switch main shaft 31 and is positioned below the bedplate;

the opening connecting column 34 is vertically and fixedly arranged on the bedplate;

the opening spring 33 is arranged below the bedplate, one end of the opening spring is fixedly connected with the opening connecting column 34, the other end of the opening spring is fixedly connected with the opening cam I32, and the energy storage and non-energy storage functions of the opening spring 33 are realized through the rotation of the switch main shaft 31;

the second opening cam 35 is fixedly arranged on the switch main shaft 31 and is positioned above the bedplate;

the V-shaped swing plate 37 is fixedly arranged on the opening rotating shaft 39, and the opening rotating shaft 39 is vertically and movably arranged on the bedplate;

the output shaft 36 is horizontally arranged, one end of the output shaft is hinged with the V-shaped swinging plate 37, and the other end of the output shaft is hinged with the second opening cam 35;

the pushing wheel 38 is movably arranged on the V-shaped swinging plate 37; a driving cam 211 matched with the pushing wheel 38 is arranged on the closing rotating shaft 21; the pushing wheel 38 stores energy in the opening spring 33 by the pushing force of the transmission cam 211;

the limiting rotating plate 310 is fixedly arranged on the opening rotating shaft 39 and is positioned above the V-shaped swinging plate 37;

the opening brake stop 311 comprises an opening brake shaft 3111 and an opening brake swing plate 3112; in the scheme, the structure principle of the brake-separating brake 311 is the same as that of the brake-closing brake;

the brake separating shaft 3111 is rotatably arranged on the bedplate and is reset through a second torsion spring;

the opening swing plate 3112 is fixedly arranged at the top of the opening shaft 3111;

the second limiting shaft 312 is rotatably arranged on the bedplate and is reset through a second limiting spring;

a second release groove matched with one end of the opening swing plate 3112 is formed in the second limit shaft 312;

the limiting rotating plate 310 is provided with a brake-separating limiting block matched with the brake-separating swing plate 3112;

the opening linear driving mechanism 313 is fixedly arranged on the bedplate and is positioned at one side of the second limiting shaft 312;

the second limit shaft 312 rotates through the opening linear driving mechanism 313 to release the opening swing plate 3112.

The operating steps of the scheme are as follows: as shown in fig. 12-14, in the closing state, when the stopper touches the closing stop, the stopper is restricted by the first stopper shaft 24 and is locked. When the switching-off state is executed, the telescopic rod of the switching-on linear driving mechanism 25 extends out, the initial limit shaft I24 rotates, and when the end part of the switching-on swinging plate 232 is completely separated from the constraint of the release groove I241, the limit block continues to rotate anticlockwise; when the transmission cam 211 on the closing rotating shaft 21 collides with the pushing wheel 38, the pushing wheel 38 is pushed to rotate, the pushing wheel 38 is movably arranged on the V-shaped swing plate 37, that is, the output shaft 36 drives the second opening cam 35 to move towards the outside direction, so as to rotate the switch main shaft 31 (as shown in fig. 15, in actual production, the switch main shaft 31 continues to extend downwards, is directly connected with the switch hinge shaft of the circuit breaker to be fixedly connected, and realizes the opening or closing function by driving the hinge shaft to rotate), and finally realizes the opening function.

As shown in fig. 16-19, when the output shaft 36 moves to the outside direction, the opening spring 33 is continuously stretched, and the opening spring 33 continuously stores energy; and finally, the energy storage limit of the brake-separating spring 33 is realized through the combined action of the second limit shaft 312 at the two ends of the brake-separating stopper 311 and the brake-separating limit block.

When the breaker needs to be switched on, the telescopic rod of the switching-off linear driving mechanism 313 extends out to push the second limiting shaft 312 to rotate, and the switch main shaft 31 rotates anticlockwise under the action of the force of the switching-off spring 33 by the limiting state that the second releasing groove contacts the switching-off swing plate 3112, so that the switching-on function is realized.

The power mechanism 1 comprises a motor 11, a speed reducer 12, a rotating shaft 13, a driving gear 14 and a driven gear 15;

the speed reducer 12 is fixedly arranged on the bedplate and rotates through the motor 11;

the rotating shaft 13 is vertically and rotatably arranged on the bedplate, and the bottom of the rotating shaft is in transmission connection with the speed reducer 12;

the driving gear 14 is fixedly sleeved on the rotating shaft 13;

the driven gear 15 is fixedly connected to the closing rotating shaft 21 and meshed with the driving gear 14;

the rotation shaft 13 is rotated by the motor 11, and the driven gear 15 is engaged with the driving gear 14 on the rotation shaft 13 to realize a rotation function.

Also comprises an indicating mechanism 4; the indicating mechanism 4 comprises an indicating rotating rod 41, a rotating rod cam 42 and an indicating needle 43;

the indicating rotating rod 41 is vertically and rotatably arranged on the bedplate and is positioned at one side of the rotating shaft 13;

a first cam fixedly connected with the rotating shaft 13 is arranged above the driving gear;

the first cam is provided with a sliding rod fixedly connected with the first cam;

the rotating rod cam 42 is horizontally and fixedly arranged on the indicating rotating rod 41 and is provided with a sliding groove matched with the sliding rod;

the indicating needle 43 is fixedly arranged at the top of the indicating rotary rod 41, and the box body is provided with energy-stored and energy-not-stored indicating plates matched with the indicating needle 43; the rotating indication function of the indicating needle 43 is realized through the movement of the sliding rod in the sliding chute;

the closing linear driving mechanism 25 and the opening linear driving mechanism 313 are respectively electromagnet telescopic rods.

The current-voltage secondary protection module comprises a Va protection circuit and an IA protection circuit;

the Va protection circuit comprises a gas protection tube D3 and a sampling resistor R5 which are connected in parallel;

a resistance-type voltage sensor is arranged at the front end of Va, one end of the resistance-type voltage sensor is connected with high voltage, and the other end of the resistance-type voltage sensor is connected with Va; va is sampling voltage, and anti-surge protection is performed through a gas protection tube D3; r5 is the numerical value of high accuracy sampling resistance through controller sampling R5 to judge that primary circuit has not had pressure and actual voltage value.

In the scheme, except for the Va protection circuit, Vb, Vc, Vr, Vs and Vt protection circuits are further arranged, the structure of the Vb protection circuit is the same as that of the Va protection circuit, for example, as shown in FIG. 6, the left side ends of the Vb protection circuit are Vb ends and GND ends respectively, the right side ends of the Vb protection circuit are RA-m ends and RA-g ends respectively, and electrical components are electrically connected with one another in the same manner.

The IA protection circuit comprises a capacitor C1, a voltage dependent resistor R1, a voltage dependent resistor R2, a resistor R3, a resistor R4, a trigger diode Q1 and a trigger diode Q2;

the first ends of the capacitor C1, the piezoresistor R1, the piezoresistor R2 and the trigger diode Q2 are respectively electrically connected with the first input end IA;

the piezoresistor R2 is connected with the resistor R3 in series;

the second ends of the capacitor C1, the voltage dependent resistor R1, the resistor R3 and the trigger diode Q2 are respectively electrically connected with a second input end IN;

one end of the resistor R4 is connected between the voltage dependent resistor R2 and the resistor R3, and the other end is electrically connected with the trigger diode Q2 through the trigger diode Q1. Two ends of the trigger diode Q2 are output ends, and a second input end of the trigger diode Q2 is grounded.

Filtering is carried out through the capacitor C1, and surge overvoltage protection can be carried out through the piezoresistor R1;

the voltage dependent resistor R2 prevents the voltage value between IA and IN from rising caused by the open circuit of the secondary side of the CT, reduces the resistance value of the resistor per se, and the voltage of the two ends of the R3 rises, thereby triggering the conduction of the diode Q1; in a normal state (without open circuit), the value of the voltage dependent resistor is infinite, the trigger diode Q1 and the bidirectional thyristor Q2 do not work, and the collection of the controller to a current loop is not influenced;

the resistor R4 is a current-limiting resistor and protects the trigger diode Q1;

after the diode Q1 of the bidirectional thyristor Q2 is triggered and conducted, the bidirectional thyristor Q2 is triggered and conducted, short circuit between IA and IN is realized, and overvoltage caused by open circuit of the secondary side of the CT is prevented;

in the scheme, an IB protection circuit and an IC protection circuit are arranged besides the IA protection circuit, the circuit structures of the IB protection circuit and the IC protection circuit are respectively the same as those of the IA, and only the connecting ends corresponding to the two ends are changed. As shown IN FIG. 6, for example, IB protection circuit has its left terminals IB and IN connected, respectively, and its right terminals RA-B and RA-D connected, respectively.

A bypass uninterrupted operation method comprises two bypass quick-switching switches, namely a 1# bypass quick-switching switch arranged between a 1# ring main unit and a 2# bypass quick-switching switch arranged between the 2# ring main unit and a 3# ring main unit;

as shown in fig. 1, the switches 3QF1, 3QF2 in the # 3 ring main unit and the switch 2QF2 in the # 2 ring main unit are respectively kept in the closed state; the 3# ring main unit provides a power supply for normal operation of the 2# ring main unit;

when carrying out planned maintenance or change to 3# looped netowrk cabinet, for guaranteeing to load zero power failure or few power failure's purpose 2# looped netowrk cabinet, its characterized in that carries out following operating procedure:

1) lap bypass circuit, as shown in fig. 1:

1.1) a switch 2QF1 in the 2# ring main unit and a switch 1QF1 in the 1# ring main unit (the 1# ring main unit is a temporary power supply point) are in a split state respectively;

1.2) electrically connecting one end of a 1# bypass quick-switching switch with a switch 1QF1 in the 1# ring main unit, and connecting the other end of the 1# bypass quick-switching switch with a three-way connector in series;

one path of the three-way joint is electrically connected with a standby interval switch 2QF1 of the 2# ring main unit, and the other path of the three-way joint is electrically connected with a bypass quick-opening switch of the 2# ring main unit.

2) And (3) bypass power supply and power reversing operation:

2.1) when the voltage detection of the 1# bypass quick-switching switch is in the on state (has the function of detecting the voltage), as shown in fig. 2, the switch 1QF1 and the switch 2QF1 are closed, and the switch 2QF2 of the 2# ring main unit is disconnected;

2.2) after the pressure detection of the bypass quick-switching switch of the No. 1 detects that the pressure is reduced to no pressure, the bypass quick-switching switch of the No. 1 is quickly switched on, and the power supply of the No. 1 ring main unit is recovered;

when the planned maintenance or the replacement of the 3# ring main unit is finished, the operation sequence of recovering power supply for the 2# and 3# ring main units is as follows:

3) the bypass operation loop for power restoration is overlapped, as shown in fig. 3:

3.1) electrically connecting the 2# bypass fast switch with a switch 3QF3 of the 3# ring main unit;

the bypass quick-opening switches of the switch 1QF1, the switch 2QF1 and the switch 1# are in an on-position state respectively;

the switch 2QF2, the switch 3QF1 and the switch 3QF3 are in a separated state respectively;

the bypass fast switch of No. 2 is in a split state,

3.2) electrically connecting the bypass quick-switching switch of the No. 2 with a switch 3QF3 of the No. 3 ring main unit;

4) and (3) recovering power supply:

4.1) resuming the power supply operation, as shown in FIG. 4:

the power supply of the on-off switch 3QF2 and the 3# ring main unit is recovered, and when the voltage is detected at the two sides of the bypass quick-switching switch of the on-off switch 3QF3 and the 2# ring main unit, the on-off switch is locked;

the voltage detection function of the 1# bypass quick-switching switch is backed off, the 1# bypass quick-switching switch is switched off, the load side of the 2# bypass quick-switching switch is switched from voltage to no voltage, the switch is automatically switched on, and the power supply to the 2# ring main unit is recovered;

4.2) dismantling a bypass operation loop:

switch 2QF2 and switch 3QF1 are closed, respectively; the 1# bypass quick-cut switch, the switch 2QF1 and the switch 3QF3 respectively form a component state; and then the bypass is dismantled to finish the operation.

The disclosure of the present application also includes the following points:

(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;

(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;

the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.

Claims (7)

1. The intelligent bypass quick-switching switch is characterized by comprising a breaker module electrically connected with an intelligent controller module through a cable;

the circuit breaker module comprises a main circuit, a three-phase current transformer, an incoming line side three-phase voltage sensor, an outgoing line side three-phase voltage sensor, a spring operating mechanism, a switch position signal module and a current and voltage secondary protection module;

the three-phase current transformer is arranged on the main loop, converts large current in a circuit into small current for an intelligent controller module to acquire data, and monitors and judges line current and faults of the intelligent controller module;

one end of the incoming line side three-phase voltage sensor and one end of the outgoing line side three-phase voltage sensor are electrically connected with the main circuit respectively; the other end of the incoming line side three-phase voltage sensor and the other end of the outgoing line side three-phase voltage sensor are respectively electrically connected with the current and voltage secondary protection module; reducing the high voltage on the power transmission line to the low voltage collected by the intelligent controller module, and using the intelligent controller module to perform electrical protection and automatic control on each fault of the power grid so as to realize the electrical isolation function of the primary system and the secondary system;

the three-phase current transformer, the incoming line side three-phase voltage sensor and the outgoing line side three-phase voltage sensor are electrically connected with the intelligent controller module through a current and voltage secondary protection module respectively;

the main circuit is provided with a main contact with an arc extinguishing function and is used for bearing or breaking load current or short-circuit current in a line within a specified time;

the main contact is separated and combined through the spring operating mechanism;

the switch position signal module is electrically connected with the intelligent controller module, fixedly arranged on the spring operating mechanism, used for providing the intelligent controller module with the on-off state of the main circuit and used for logically judging the position of the circuit breaker.

2. The intelligent bypass quick-disconnect switch of claim 1 further comprising an SF6 pressure sensor in electrical communication with the intelligent controller module.

3. The intelligent bypass quick-switch according to claim 1, wherein the spring-operated mechanism comprises a power mechanism, a closing mechanism and an opening mechanism;

the switching-on mechanism comprises a switching-on rotating shaft, a switching-on elastic mechanism, a switching-on stopping shaft I and a limiting shaft I and a switching-on linear driving mechanism;

the closing rotating shaft is vertically and movably arranged on the bedplate and rotates through the power mechanism;

the switching-on elastic mechanism comprises a first spring connecting head, a switching-on spring, a second spring connecting head and a first spring connecting shaft;

the first spring connecting head is L-shaped and is fixedly arranged at the top of the closing rotating shaft;

the spring connector II is fixedly connected to the bedplate through the limiting shaft I;

one end of the closing spring is fixedly connected with the first spring connector, and the other end of the closing spring is fixedly connected with the second spring connector;

the switching-on stopping device comprises a switching-on shaft and a switching-on swinging plate;

the brake closing shaft is movably arranged on the bedplate through a torsion spring I;

a limiting block matched with the closing swing plate is fixedly arranged on the power mechanism; the first limiting shaft is vertically and movably arranged on the bedplate and is reset through a first limiting spring;

the switching-on swing plate is fixedly sleeved on the switching-on shaft, the switching-on swing plate is limited through the first limiting shaft and the limiting block, and the switching-on spring is in an energy storage state;

a first release groove matched with the first closing swing plate is formed in the first limit shaft, the first closing swing plate is relieved of limit through the first release groove through rotation of the first limit shaft, and the closing rotating shaft rotates to enable the closing spring to reset;

the first limiting shaft rotates through the switching-on linear driving mechanism; the switching-on linear driving mechanism is fixedly arranged on the bedplate and is positioned on one side of the first limiting shaft;

the brake separating mechanism comprises a switch main shaft, a brake separating cam I, a brake separating spring, a brake separating connecting column, a brake separating cam II, an output shaft, a V-shaped swinging plate, a pushing wheel, a brake separating rotating shaft, a limiting rotating plate, a brake separating stop, a limiting shaft II and a brake separating linear driving mechanism;

the switch main shaft is vertically and movably arranged on the bedplate;

the first opening cam is fixedly arranged on the switch main shaft and is positioned below the bedplate;

the opening connecting column is vertically and fixedly arranged on the bedplate;

the opening spring is arranged below the bedplate, one end of the opening spring is fixedly connected with the opening connecting column, the other end of the opening spring is fixedly connected with the opening cam I, and the energy storage and non-energy storage functions of the opening spring are realized through the rotation of the switch main shaft;

the second opening cam is fixedly arranged on the switch main shaft and is positioned above the bedplate;

the V-shaped swing plate is fixedly arranged on the opening rotating shaft, and the opening rotating shaft is vertically and movably arranged on the bedplate;

the output shaft is horizontally arranged, one end of the output shaft is hinged with the V-shaped swing plate, and the other end of the output shaft is hinged with the second opening cam;

the pushing wheel is movably arranged on the V-shaped swinging plate; a transmission cam matched with the pushing wheel is arranged on the closing rotating shaft; the pushing wheel enables the brake separating spring to store energy through the pushing force of the transmission cam;

the limiting rotating plate is fixedly arranged on the opening rotating shaft and is positioned above the V-shaped swinging plate;

the brake separating brake comprises a brake separating shaft and a brake separating swing plate;

the opening brake shaft is rotatably arranged on the bedplate and is reset through a second torsion spring;

the opening swing plate is fixedly arranged at the top of the opening shaft;

the second limiting shaft is rotatably arranged on the bedplate and is reset through a second limiting spring;

a second release groove matched with one end of the opening swing plate is formed in the second limit shaft;

the limiting rotating plate is provided with a brake separating limiting block matched with the brake separating swinging plate;

the opening linear driving mechanism is fixedly arranged on the bedplate and is positioned on one side of the second limiting shaft;

and the second limit shaft rotates through the opening linear driving mechanism to release the opening swing plate.

4. The intelligent bypass quick-switch according to claim 3, wherein the power mechanism comprises a motor, a reducer, a rotating shaft, a driving gear and a driven gear;

the speed reducer is fixedly arranged on the bedplate and rotates through the motor;

the rotating shaft is vertically and rotatably arranged on the bedplate, and the bottom of the rotating shaft is in transmission connection with the speed reducer;

the driving gear is fixedly sleeved on the rotating shaft;

the driven gear is fixedly connected to the closing rotating shaft and meshed with the driving gear.

5. The intelligent bypass quick-disconnect switch of claim 4 further comprising an indication mechanism; the indicating mechanism comprises an indicating rotating rod, a rotating rod cam and an indicating needle;

the indicating rotating rod is vertically and rotatably arranged on the bedplate and is positioned on one side of the rotating shaft;

the rotating shaft is provided with a first cam which is fixedly connected and is positioned above the driving gear;

the first cam is provided with a sliding rod fixedly connected with the first cam;

the rotating rod cam is horizontally and fixedly arranged on the indicating rotating rod and is provided with a sliding chute matched with the sliding rod;

the indicating needle is fixedly arranged at the top of the indicating rotating rod, and the rotating indicating function of the indicating needle is realized through the movement of the sliding rod in the sliding groove.

6. The intelligent bypass quick-switch according to claim 3, wherein the closing linear driving mechanism and the opening linear driving mechanism are respectively electromagnet telescopic rods.

7. The intelligent bypass fast switch according to claim 1, wherein the current-voltage secondary protection module comprises a Va protection circuit and an IA protection circuit;

the Va protection circuit comprises a gas protection tube D3 and a sampling resistor R5 which are connected in parallel;

the IA protection circuit comprises a capacitor C1, a voltage dependent resistor R1, a voltage dependent resistor R2, a resistor R3, a resistor R4, a trigger diode Q1 and a trigger diode Q2;

the first ends of the capacitor C1, the piezoresistor R1, the piezoresistor R2 and the trigger diode Q2 are respectively electrically connected with the first input end IA;

the piezoresistor R2 is connected with the resistor R3 in series;

the second ends of the capacitor C1, the voltage dependent resistor R1, the resistor R3 and the trigger diode Q2 are respectively electrically connected with a second input end IN;

one end of the resistor R4 is connected between the voltage dependent resistor R2 and the resistor R3, and the other end is electrically connected with the trigger diode Q2 through the trigger diode Q1.

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