CN213877929U - 10KV intelligent phase control load switch - Google Patents
10KV intelligent phase control load switch Download PDFInfo
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- CN213877929U CN213877929U CN202022523449.XU CN202022523449U CN213877929U CN 213877929 U CN213877929 U CN 213877929U CN 202022523449 U CN202022523449 U CN 202022523449U CN 213877929 U CN213877929 U CN 213877929U
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Abstract
The utility model provides a 10KV intelligence phase control load switch, set up respectively on A looks transmission line, B looks transmission line and the C looks transmission line of three-phase transmission line, then respectively with fall the insurance and be connected, including controller and set up A looks switch on A looks transmission line, set up B looks switch on B looks transmission line and set up C looks switch on C looks transmission line; the controller is electrically connected with the A-phase switch, the B-phase switch and the C-phase switch respectively and used for controlling the on and off of the A-phase switch, the B-phase switch and the C-phase switch respectively.
Description
Technical Field
The utility model relates to a load switch is controlled mutually to 10KV intelligence belongs to high-tension line switchgear technical field.
Background
At present, in many places of China, a distribution transformer installed on a 10KV line uses 'fall insurance' instead of a load switch. Particularly, the number of distribution transformers is huge in rural power networks, millions of distribution transformers are estimated to exist in the whole country, and the number of 'falling insurance' is particularly large.
Although "fall insurance" is inexpensive and simple to install, it is less safe. After maintenance, a large impact current is generated during power transmission, a long electric arc is generated when a power failure is broken and a falling fuse is broken, and even an interphase arc short circuit is formed to cause large-area power failure. Meanwhile, the safety of the human body is seriously threatened, and equipment and personal accidents are often caused.
The fall insurance irrationality is obvious: particularly, in a high-voltage loop, the three parts are integrated into a whole, namely the isolation knife switch, the switch and the overcurrent protection. Too marginal and unsafe for a 10kv voltage. Although the circuit breaker and the load switch are safe and reliable, the manufacturing cost is high.
In order to solve the problem, the inventor develops a 10KV intelligent phase-controlled load switch, which integrates a knife switch, a switch and protection, and has no impact when switching on and no arc when switching off. The appearance and the fall insurance are similar, are a little longer, have much lower cost than the traditional circuit breaker and the load switch, but have the same performance. The installation is as convenient as a traditional fall fuse.
SUMMERY OF THE UTILITY MODEL
To above-mentioned problem, in order to solve this problem, the utility model provides a load switch is controlled mutually to 10KV intelligence, switch and protection three are integrative, and it does not strike to close a floodgate, and the separating brake does not have the arc light. The appearance and the fall insurance are similar, are a little longer, have much lower cost than the traditional circuit breaker and the load switch, but have the same performance. The installation is as convenient as a traditional fall fuse.
The utility model aims at providing a 10KV intelligence phase control load switch, set up respectively on A looks transmission line, B looks transmission line and the C looks transmission line of three-phase transmission line, then respectively with fall the insurance and be connected, including the controller with set up the A looks switch on A looks transmission line, set up the B looks switch on B looks transmission line and set up the C looks switch on C looks transmission line; the controller is electrically connected with the A-phase switch, the B-phase switch and the C-phase switch respectively and used for controlling the on and off of the A-phase switch, the B-phase switch and the C-phase switch respectively.
The utility model discloses technical scheme's further improvement lies in: the B-phase switch comprises a first fixing plate, and a first electromagnet, a first switching-on and switching-off electromagnet and a first incoming line contact which are sequentially arranged on the first fixing plate;
a first movable rod is arranged in the first switching-on and switching-off electromagnet, two ends of the first movable rod extend out of two ends of the first switching-on and switching-off electromagnet, one end, close to the first electromagnet, of the first movable rod of the first switching-on and switching-off electromagnet is provided with first permanent magnet steel, and the other end of the first movable rod of the first switching-on and switching-off electromagnet is provided with a first movable vertical rod; a first B-phase cross rod is arranged on the first movable vertical rod; a first left side active contact and a first right side active contact are respectively arranged on two sides of the first B-phase cross bar;
the B-phase switch also comprises a first wire outlet contact arranged on the first fixing plate; a first incoming line contact and a first outgoing line contact of the B-phase switch correspond to a first left-side active contact and a first right-side active contact on two sides of a first B-phase cross rod respectively, and a first movable vertical rod moves in a stroke to enable the first left-side active contact and the first right-side active contact to be in contact with the first incoming line contact and the first outgoing line contact respectively;
a first incoming line contact of the B-phase switch is connected with a B-phase incoming line of the B-phase power transmission line, and a first outgoing line contact of the B-phase switch is connected with a falling fuse of the B-phase power transmission line;
the controller is respectively connected with the control wiring of the first electromagnet of the B-phase switch and the control wiring of the first switching-on electromagnet of the B-phase switch and is used for controlling the first movable rod of the B-phase switch to move.
The utility model discloses technical scheme's further improvement lies in: the A-phase switch comprises a fixed plate, and an electromagnet, a switching-on and switching-off electromagnet, an incoming line contact and a fixed contact which are sequentially arranged on the fixed plate; a movable rod is arranged in the opening and closing electromagnet, two ends of the movable rod extend out of two ends of the opening and closing electromagnet, one end of the movable rod of the opening and closing electromagnet, which is close to the electromagnet, is provided with permanent magnet steel, and the other end of the movable rod of the opening and closing electromagnet is connected with a movable vertical rod; the movable vertical rods are provided with first cross rods and second cross rods at intervals; two ends of the first cross rod are respectively provided with a left side active contact and a right side active contact; two ends of the second cross rod are respectively provided with a left movable contact and a right movable contact; the incoming line contact corresponds to the left active contact; the two fixed contacts are respectively a left fixed contact corresponding to the left movable contact and a right fixed contact corresponding to the right movable contact;
the A-phase switch also comprises an outlet contact arranged on the fixed plate, and the outlet contact corresponds to the right active contact;
the incoming line contact is connected with the left fixed contact through a high-voltage silicon stack; the outlet contact is connected with the right fixed contact through another high-voltage silicon stack;
the left fixed contact is also provided with a first spring, and the first spring is provided with a left time-delay contact; the right fixed contact is provided with a second spring, and the second spring is provided with a right time-delay contact; the left side delay contact corresponds to the left side movable contact, and the right side delay contact corresponds to the right side movable contact;
the incoming line contact of the A-phase switch is connected with the A-phase incoming line of the A-phase power transmission line, and the outgoing line contact of the A-phase switch is connected with the falling fuse of the A-phase power transmission line;
and the controller is respectively connected with the control wiring of the electromagnet of the A-phase switch and the control wiring of the opening and closing electromagnet of the A-phase switch and is used for controlling the movement of the movable rod of the A-phase switch.
The utility model discloses technical scheme's further improvement lies in: the structure of the C-phase switch is the same as that of the A-phase switch;
the incoming line contact of the C-phase switch is connected with the C-phase incoming line of the C-phase power transmission line, and the outgoing line contact of the C-phase switch is connected with the falling fuse of the C-phase power transmission line;
and the controller is respectively connected with the control wiring of the electromagnet of the C-phase switch and the control wiring of the opening and closing electromagnet of the C-phase switch and is used for controlling the movement of the movable rod of the C-phase switch.
The utility model discloses technical scheme's further improvement lies in: the movable vertical rod and the first movable vertical rod are epoxy resin connecting plates.
The utility model discloses technical scheme's further improvement lies in: the high-voltage silicon stack is a 20KV high-voltage silicon stack.
The utility model discloses technical scheme's further improvement lies in: the controller comprises a capacitor voltage reduction and stabilization power supply, a single chip microcomputer, a plurality of capacitor voltage transformers and a three-phase current transformer; the three-phase current transformer comprises a current transformer A, a current transformer B and a current transformer C.
A first incoming line contact of the B-phase switch is connected with the single chip microcomputer through two capacitor voltage transformers; the inlet wire contact of the C-phase switch is connected with the singlechip through another two capacitor voltage transformers;
the singlechip is driven by the A-phase switch and then is respectively connected with the control wiring of the electromagnet of the A-phase switch and the control wiring of the opening and closing electromagnet; the singlechip is driven by the B-phase switch and then is respectively connected with a control wiring of a first electromagnet of the B-phase switch and a control wiring of a first switching-on and switching-off electromagnet; the singlechip is driven by the C-phase switch and then is respectively connected with the control wiring of the electromagnet of the C-phase switch and the control wiring of the opening and closing electromagnet;
the current transformer A is connected with the single chip microcomputer after being amplified; the current transformer B is amplified and then connected with the single chip microcomputer; c, the current transformer is connected with the single chip microcomputer after being amplified;
the singlechip is grounded through a switch;
the capacitor voltage reduction and stabilization power supply is respectively and electrically connected with the phase A switch drive, the phase B switch drive and the phase C switch drive through the drive power supply.
The utility model discloses technical scheme's further improvement lies in: the controller is further provided with a communication interface, and the single chip microcomputer is electrically connected with the communication interface.
The utility model discloses technical scheme's further improvement lies in: the controller is also provided with a wireless current transformer interface for receiving wireless current transformer signals; the singlechip is electrically connected with the wireless current transformer interface.
The utility model discloses technical scheme's further improvement lies in: the A-phase switch, the B-phase switch and the C-phase switch are respectively arranged in the high-voltage bushing and then are connected with the corresponding falling fuse.
The utility model has the advantages that:
the utility model discloses use permanent magnetism drive mechanism to take the moving contact, avoid combined floodgate and separating brake arc with high-pressure silicon stack, carry out intelligent control to the switch of controlling mutually through the controller, realize controlling mutually and close separating brake and overcurrent protection.
When the high-voltage silicon stack is switched on instantly, no impact is generated. When the voltage is the instant switching-off of the high-voltage silicon stack in the conducting direction and the voltage of the silicon stack is reversed, the current is naturally cut off, so that no arc light is generated. The characteristics of the phase-controlled switch are different from those of a pure mechanical switch phase-controlled switch without a silicon stack, the action error of the pure mechanical switch phase-controlled switch is very severe and is generally less than 0.48ms (8.64 electrical angles), and the action is influenced by the ambient temperature, the humidity and the aging, so that the phase-controlled switch is difficult to realize even a permanent magnetic mechanism. After the high-voltage silicon stack is used, the action error margin of the switch is required to be greatly increased, about 5ms (90-degree electrical angle) is 10 times of that of a common phase control switch, and the switch of a common permanent magnet mechanism is easy to realize.
The common mechanical phase control switch can not realize the real zero-crossing switching on and off of capacitive loads and only adopts the quasi zero-crossing. And the accurate switching-on of 90-degree electrical angle of inductive load voltage is difficult to ensure. And the utility model discloses a "load switch is controlled mutually to 10KV intelligence", owing to adopt intelligent control, the nature of automatic identification load, including the effect of high-pressure silicon stack, no matter the effect, feel nature and other nature loads, the combined floodgate that can both do does not strike, and the separating brake does not draw the arc.
The utility model discloses a load switch is controlled mutually to 10KV intelligence can do 10KV circuit reactive compensation, simple to operate as long as connect ordinary high-voltage capacitor can. And starting and stopping control of the 10KV high-voltage motor can be performed. And the switching of multiple capacitors can be realized in a transformer substation only by using the intelligent switch technology, so that a heavy reactor can be omitted.
The utility model discloses the communication interface of controller can connect wireless data transmission and GPRS etc. and carry out remote operation and control.
The utility model discloses a wireless current transformer interface can receive wireless current transformer's signal to automatic switching on/off.
The utility model discloses a switch of controller can carry out the on-the-spot switch and open and close the operation.
Drawings
FIG. 1 is a main wiring diagram of the present invention;
fig. 2 is a schematic mechanical structure diagram of the a-phase switch of the present invention;
fig. 3 is a schematic mechanical structure diagram of the B-phase switch of the present invention;
fig. 4 is a schematic mechanical structure diagram of the C-phase switch of the present invention;
fig. 5 is a diagram of a connection frame of the controller of the present invention.
Description of the reference numerals
1 electromagnet
2 permanent magnet steel
3 switching-on and switching-off electromagnet
4 control connection of electromagnet
Control connection wire of 5 switching-on/off electromagnet
6 movable vertical rod
7 left side high-voltage silicon stack
8 right side high voltage silicon stack
9 left side active contact
10 right side active contact
11 left side delay contact
12 right side delay contact
13 left movable contact
14 right movable contact
15 incoming line contact
16 outlet contact
(1-16 are A-phase switch reference numerals)
UA A phase incoming line
UB B phase incoming line
UC C phase incoming line
FU fall-off safety
ua A phase outgoing line
UBB phase outgoing line
uc C phase outgoing line
Bidirectional delay auxiliary contact of KT 1A phase switch
Bidirectional delay auxiliary contact of KT 2C-phase switch
Main contact of KA A phase switch
KB B phase switch main contact
KC C phase switch main contact
GD 1A-phase high-voltage silicon stack
GD 2C phase high voltage silicon stack.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
The present invention relates to a directional device, and more particularly to a directional device, such as "front", "back", "left", "right", "top", "bottom", "inner", "outer", "side", "first", "second", etc., which is used to assist in explaining and understanding the present invention.
The utility model provides a load switch is controlled mutually to 10KV intelligence adopts switch, switch and protection three integrative, and the combined floodgate does not strike, and separating brake does not have the arc light, as shown in figure 1, figure 2, figure 3, figure 4, figure 5. The following are specific examples:
the utility model provides a load switch is controlled mutually to 10KV intelligence, includes A phase switch, B phase switch, C phase switch and controller, as shown in fig. 1, fig. 1 is the utility model discloses a main wiring diagram. The A-phase switch, the B-phase switch and the C-phase switch are respectively arranged on the corresponding A-phase transmission line, the corresponding B-phase transmission line and the corresponding C-phase transmission line, then are connected with respective falling insurance and are connected in series on the respective transmission line. The load switch is further provided with a controller 17, and the controller 17 is electrically connected with the A-phase switch, the B-phase switch and the C-phase switch respectively so as to achieve intelligent control over the on and off of each switch.
The B-phase switch includes a fixed plate (not shown in the figure), on which an electromagnet, a switching electromagnet and an incoming line contact are sequentially disposed, as shown in fig. 3. The opening and closing electromagnet is internally provided with a movable rod, and two ends of the movable rod extend out of two ends of the opening and closing electromagnet. The opening and closing electromagnet is vertically arranged in the direction of the view, and the electromagnet is arranged above the opening and closing electromagnet at a certain interval, so that a movable rod of the opening and closing electromagnet can touch the electromagnet in the stroke. One end of the movable rod of the opening and closing electromagnet, which can touch the electromagnet, is provided with permanent magnet steel. The other end of the movable rod is connected with the movable vertical rod. A first cross rod is arranged on the movable vertical rod, and a left side driving contact and a right side driving contact are arranged on two sides of the first cross rod respectively. The left side active contact is corresponding to the incoming line contact, so that the movable rod can drive the left side active contact to touch the incoming line contact, and the incoming line contact is communicated. The B-phase switch also comprises an outgoing line contact which is also arranged on the fixed plate, is respectively positioned at two sides of the movable vertical rod and corresponds to the right-side active contact, so that the movable vertical rod can drive the right-side active contact to touch the outgoing line contact.
The incoming line contact of the B-phase switch is connected with a B-phase incoming line UB (namely the incoming line of the B-phase transmission line), and the outgoing line contact of the B-phase switch is connected with a fall fuse FU of the B-phase transmission line.
The a-phase switch comprises a fixed plate (not shown in the figure), and an electromagnet 1, a switching electromagnet 3, an incoming line contact 15, a fixed contact and two high-voltage silicon stacks are sequentially arranged on the fixed plate, as shown in fig. 2. A movable rod is arranged in the opening and closing electromagnet 3, and two ends of the movable rod extend out of two ends of the opening and closing electromagnet. The opening and closing electromagnet 3 is vertically arranged in the direction of the view, the electromagnet 1 is arranged above the opening and closing electromagnet 3 at a certain interval, a movable rod of the opening and closing electromagnet 3 can touch the electromagnet 1 in the stroke, and a permanent magnet steel 2 is arranged at one end, capable of touching the electromagnet 1, of the movable rod of the opening and closing electromagnet 3. The other end of the movable rod is connected with a movable vertical rod 6. The movable vertical rod 6 is provided with a first cross rod and a second cross rod which are arranged at intervals. Two ends of the first cross rod are respectively provided with a left active contact 9 and a right active contact 10, and the first cross rod enables the left active contact 9 and the right active contact to be connected and conducted; the two sides of the second cross bar are respectively provided with a left movable contact 13 and a right movable contact 14, and the left movable contact 13 and the right movable contact 14 are connected and conducted; the incoming line contact 15 corresponds to the left active contact 9; two fixed contacts are arranged, namely a left fixed contact and a right fixed contact which correspond to the left movable contact 13 and the right movable contact 14 respectively; the fixed contact is located between the first cross bar and the second cross bar. The A-phase switch is also provided with an outlet contact 16, the outlet contact 16 is also fixed on the fixed plate, the outlet contact 16 corresponds to the inlet contact 15 and is positioned on two sides of the movable vertical rod 6, and the left side active contact 9 and the right side active contact 10 at two ends of the first cross rod respectively correspond to the inlet contact 15 and the outlet contact 16.
The number of the high-voltage silicon stacks is two, namely a left high-voltage silicon stack 7 and a right high-voltage silicon stack 8. The left fixed contact is connected with the incoming line contact 15 through the left high-voltage silicon stack 7, the outgoing line contact 16 is connected with the right fixed contact through the right high-voltage silicon stack 8, and the high-voltage silicon stack can adopt a 20KV high-voltage silicon stack. The left fixed contact is also connected with the left delay contact 11 through a spring, and the right fixed contact is connected with the right delay contact 12 through a spring. Preferably, the spring can be a phosphor bronze spring. The movable rod of the opening and closing electromagnet 4 can drive the first cross rod and the second cross rod to move under the control of the controller 17, so that the left active contact 9 on the first cross rod can touch the incoming line contact 15, and the right active contact 10 can touch the outgoing line contact 16. The left movable contact 13 on the second cross bar can touch the left delay contact, and the right movable contact 14 can touch the right delay contact.
An incoming line contact 15 of the A-phase switch is connected with an incoming line UA of the A-phase (namely the incoming line of the A-phase power transmission line), and an outgoing line contact 16 of the A-phase switch is connected with a falling fuse FU of the A-phase power transmission line.
The structure of the C-phase switch is the same as that of the a-phase switch, as shown in fig. 4, and will not be described in detail. The incoming line contact of the C-phase switch is connected with the C-phase incoming line UC (incoming line of the C-phase power transmission line), and the outgoing line contact of the C-phase switch is connected with the fall fuse FU of the C-phase power transmission line.
The controller 17 is connected to the control connection 4 of the electromagnet of the a-phase switch and the control connection 5 of the opening and closing electromagnet, respectively, to control the movement of the movable rod of the a-phase switch.
The controller 17 is connected to the control connection of the electromagnet of the B-phase switch and the control connection of the opening and closing electromagnet, respectively, to control the movement of the movable rod of the B-phase switch.
The controller 17 is connected to the control connection of the electromagnet of the C-phase switch and the control connection of the opening and closing electromagnet, respectively, to control the movement of the movable rod of the C-phase switch.
In the utility model, the movable vertical rods in the three-phase load switch can be epoxy resin connecting plates; the high-voltage silicon stacks are all 20KV high-voltage silicon stacks.
The controller 17 comprises a capacitance voltage reduction and stabilization power supply, a single chip microcomputer, a capacitance voltage transformer and a three-phase current transformer, as shown in fig. 5; in fig. 5, the single chip microcomputer may be a plc single chip microcomputer, and corresponding program codes are written into the single chip microcomputer to control the a-phase switch, the B-phase switch, and the C-phase switch, and the single chip microcomputer may be a PIC16F73 type single chip microcomputer. Voltage sync signal processing is performed by ITR 8010. The controller 17 is a secondary circuit so that the phase a switch in fig. 5 does not need to have its incoming contacts.
The incoming line contact of the B-phase switch is connected with the single chip microcomputer through two capacitor voltage transformers (namely a capacitor voltage transformer 1 and a capacitor voltage transformer 2 in the figure); the C-phase incoming line contact is connected with the single chip microcomputer through two capacitor voltage transformers;
the single chip microcomputer is driven by the phase-A switch and then is respectively connected with the control wiring of the electromagnet of the phase-A switch and the control wiring of the opening and closing electromagnet, as shown in figure 5 (in the figure, the phase-A driving coil refers to the control wiring of the electromagnet of the phase-A switch and the control wiring of the opening and closing electromagnet).
After being driven by the phase-B switch, the single chip microcomputer is respectively connected with the control wiring of the electromagnet of the phase-B switch and the control wiring of the opening and closing electromagnet, as shown in FIG. 5 (in the figure, the phase-B driving coil refers to the control wiring of the electromagnet of the phase-B switch and the control wiring of the opening and closing electromagnet).
After being driven by the C-phase switch, the single chip microcomputer is respectively connected with the control wiring control of the electromagnet of the C-phase switch and the control wiring of the opening and closing electromagnet, as shown in fig. 5 (in the drawing, the a-phase drive coil refers to the control wiring of the electromagnet of the a-phase switch and the control wiring of the opening and closing electromagnet). The a-phase switch drive, the B-phase switch drive, and the C-phase switch drive may all be G60N 100.
The three-phase current transformer comprises a current transformer A, a current transformer B and a current transformer C. The A current transformer is connected with the single chip microcomputer after being amplified (the LM258 can be used for amplification); the current transformer B is connected with the singlechip after being amplified; c, the current transformer is connected with the single chip microcomputer after amplification treatment;
the singlechip is grounded through a switch; the switch can be a brake, and the field operation can be carried out through a brake pull rod of the brake.
The capacitor voltage reduction and stabilization power supply is respectively and electrically connected with the phase A switch drive, the phase B switch drive and the phase C switch drive through the drive power supply.
The controller 17 is also provided with a communication interface and a wireless current transformer interface. The singlechip is respectively and electrically connected with the communication interface and the wireless current transformer interface. Wireless data transmission, GPRS and other remote operation and monitoring can be carried out through the communication interface. The wireless current transformer interface can receive signals of the wireless current transformer so as to automatically switch on and off.
The A-phase switch, the B-phase switch and the C-phase switch are respectively arranged in the high-voltage bushing and then are connected with the corresponding falling fuse; the high-voltage bushing is a synthetic insulator high-voltage bushing with a closed cavity filled with dry air at normal atmospheric pressure.
When the switch needs to be switched on, the controller controls the movable rods of the A-phase switch, the B-phase switch and the C-phase switch to act, the A-phase main contact is closed (namely the left side active contact is contacted with the wire inlet contact, the right side active contact is contacted with the wire outlet contact) and the A-phase switch bidirectional delay auxiliary contact KT1 is closed (the left side active contact is contacted with the left side delay contact, the right side active contact is contacted with the right side delay contact), the B-phase main contact is closed, the C-phase main contact is closed, and the C-phase switch bidirectional delay auxiliary contact KT2 is closed, as shown in FIG. 1.
When the brake is required to be opened, the controller controls the movable rods of the A-phase switch, the B-phase switch and the C-phase switch to act, the A-phase main contact is disconnected (namely the left-side active contact is not contacted with the incoming line contact, and the right-side active contact is not contacted with the outgoing line contact), the A-phase switch bidirectional delay auxiliary contact KT1 is disconnected (the left-side active contact is contacted with the left-side delay contact, and the right-side active contact is contacted with the right-side delay contact), the B-phase main contact is disconnected, the C-phase main contact is disconnected, and the C-phase switch bidirectional delay auxiliary contact KT2 is disconnected.
GD1 in fig. 1 refers to the left high-voltage silicon stack 7 and the right high-voltage silicon stack 8 of the phase a switch in fig. 2; GD2 in fig. 1 refers to the two high voltage silicon stacks of the C-phase switch in fig. 4.
The utility model discloses use permanent magnetism drive mechanism to take the moving contact, avoid combined floodgate and separating brake arc with high-pressure silicon stack, carry out intelligent control to the switch of controlling mutually through the controller, realize controlling mutually and close separating brake and overcurrent protection.
When the high-voltage silicon stack is switched on instantly, no impact is generated. When the voltage is the instant switching-off of the high-voltage silicon stack in the conducting direction and the voltage of the silicon stack is reversed, the current is naturally cut off, so that no arc light is generated. The characteristics of the phase-controlled switch are different from those of a pure mechanical switch phase-controlled switch without a silicon stack, the action error of the pure mechanical switch phase-controlled switch is very severe and is generally less than 0.48ms (8.64 electrical angles), and the action is influenced by the ambient temperature, the humidity and the aging, so that the phase-controlled switch is difficult to realize even a permanent magnetic mechanism. After the high-voltage silicon stack is used, the action error margin of the switch is required to be greatly increased, about 5ms (90-degree electrical angle) is 10 times of that of a common phase control switch, and the switch of a common permanent magnet mechanism is easy to realize.
The common mechanical phase control switch can not realize the real zero-crossing switching on and off of capacitive loads and only adopts the quasi zero-crossing. And the accurate switching-on of 90-degree electrical angle of inductive load voltage is difficult to ensure. And the utility model discloses a "load switch is controlled mutually to 10KV intelligence", owing to adopt intelligent control, the nature of automatic identification load, in addition the effect of high-pressure silicon stack, no matter capacity, sense nature and other nature loads, can both accomplish to close a floodgate and do not strike, the arc is not drawn in the separating brake.
The utility model discloses a load switch is controlled mutually to 10KV intelligence replaces present fall insurance. And the reactive compensation of a 10KV line can be carried out, the installation is convenient, and only a common high-voltage capacitor is connected. And starting and stopping control of the 10KV high-voltage motor can be performed. And the switching of multiple capacitors can be realized in a transformer substation only by using the intelligent switch technology, so that a heavy reactor can be omitted.
The utility model discloses be full of the synthetic insulator high-tension bushing of the airtight cavity of dry air with the switch setting at conventional atmospheric pressure. Rather than being filled with the commonly used sulfur hexafluoride, because sulfur hexafluoride is not environmentally friendly.
The utility model discloses the communication interface of controller can connect wireless data transmission and GPRS etc. and carry out remote operation and control.
The utility model discloses a wireless current transformer interface can receive wireless current transformer's signal to automatic switching on/off.
The utility model discloses a switch of controller can carry out the on-the-spot switch and open and close the operation.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (8)
1. A10 KV intelligent phase control load switch is respectively arranged on an A-phase power transmission line, a B-phase power transmission line and a C-phase power transmission line of a three-phase power transmission line and then respectively connected with a falling fuse, and is characterized by comprising a controller, an A-phase switch arranged on the A-phase power transmission line, a B-phase switch arranged on the B-phase power transmission line and a C-phase switch arranged on the C-phase power transmission line; the controller is respectively electrically connected with the A-phase switch, the B-phase switch and the C-phase switch and used for respectively controlling the on and off of the A-phase switch, the B-phase switch and the C-phase switch;
the B-phase switch comprises a first fixing plate, and a first electromagnet, a first switching-on and switching-off electromagnet and a first incoming line contact which are sequentially arranged on the first fixing plate;
a first movable rod is arranged in the first switching-on and switching-off electromagnet, two ends of the first movable rod extend out of two ends of the first switching-on and switching-off electromagnet, one end, close to the first electromagnet, of the first movable rod of the first switching-on and switching-off electromagnet is provided with first permanent magnet steel, and the other end of the first movable rod of the first switching-on and switching-off electromagnet is provided with a first movable vertical rod; a first B-phase cross rod is arranged on the first movable vertical rod; a first left side active contact and a first right side active contact are respectively arranged on two sides of the first B-phase cross bar;
the B-phase switch also comprises a first wire outlet contact arranged on the first fixing plate; a first incoming line contact and a first outgoing line contact of the B-phase switch correspond to a first left-side active contact and a first right-side active contact on two sides of a first B-phase cross rod respectively, and a first movable vertical rod moves in a stroke to enable the first left-side active contact and the first right-side active contact to be in contact with the first incoming line contact and the first outgoing line contact respectively;
a first incoming line contact of the B-phase switch is connected with a B-phase incoming line of the B-phase power transmission line, and a first outgoing line contact of the B-phase switch is connected with a falling fuse of the B-phase power transmission line;
the controller is respectively connected with the control wiring of the first electromagnet of the B-phase switch and the control wiring of the first switching-on and switching-off electromagnet of the B-phase switch and used for controlling the first movable rod of the B-phase switch to move;
the A-phase switch comprises a fixed plate, and an electromagnet, a switching-on and switching-off electromagnet, an incoming line contact and a fixed contact which are sequentially arranged on the fixed plate; a movable rod is arranged in the opening and closing electromagnet, two ends of the movable rod extend out of two ends of the opening and closing electromagnet, one end of the movable rod of the opening and closing electromagnet, which is close to the electromagnet, is provided with permanent magnet steel, and the other end of the movable rod of the opening and closing electromagnet is connected with a movable vertical rod; the movable vertical rods are provided with first cross rods and second cross rods at intervals; two ends of the first cross rod are respectively provided with a left side active contact and a right side active contact; two ends of the second cross rod are respectively provided with a left movable contact and a right movable contact; the incoming line contact corresponds to the left active contact; the two fixed contacts are respectively a left fixed contact corresponding to the left movable contact and a right fixed contact corresponding to the right movable contact;
the A-phase switch also comprises an outlet contact arranged on the fixed plate, and the outlet contact corresponds to the right active contact;
the incoming line contact is connected with the left fixed contact through a high-voltage silicon stack; the outlet contact is connected with the right fixed contact through another high-voltage silicon stack;
the left fixed contact is also provided with a first spring, and the first spring is provided with a left time-delay contact; the right fixed contact is provided with a second spring, and the second spring is provided with a right time-delay contact; the left side delay contact corresponds to the left side movable contact, and the right side delay contact corresponds to the right side movable contact;
the incoming line contact of the A-phase switch is connected with the A-phase incoming line of the A-phase power transmission line, and the outgoing line contact of the A-phase switch is connected with the falling fuse of the A-phase power transmission line;
and the controller is respectively connected with the control wiring of the electromagnet of the A-phase switch and the control wiring of the opening and closing electromagnet of the A-phase switch and is used for controlling the movement of the movable rod of the A-phase switch.
2. The 10KV intelligent phase-controlled load switch according to claim 1, wherein the structure of the C-phase switch is the same as that of the A-phase switch;
the incoming line contact of the C-phase switch is connected with the C-phase incoming line of the C-phase power transmission line, and the outgoing line contact of the C-phase switch is connected with the falling fuse of the C-phase power transmission line;
and the controller is respectively connected with the control wiring of the electromagnet of the C-phase switch and the control wiring of the opening and closing electromagnet of the C-phase switch and is used for controlling the movement of the movable rod of the C-phase switch.
3. The 10KV intelligent phase-controlled load switch according to claim 2, wherein the movable vertical rod and the first movable vertical rod are both epoxy resin connecting plates.
4. The 10KV intelligent phase-controlled load switch according to claim 1, wherein the high-voltage silicon stack is a 20KV high-voltage silicon stack.
5. The 10KV intelligent phase-controlled load switch according to claim 2, wherein the controller comprises a capacitor voltage reduction and stabilization power supply, a single chip microcomputer, a plurality of capacitor voltage transformers and a three-phase current transformer; the three-phase current transformer comprises a current transformer A, a current transformer B and a current transformer C;
a first incoming line contact of the B-phase switch is connected with the single chip microcomputer through two capacitor voltage transformers; the inlet wire contact of the C-phase switch is connected with the singlechip through another two capacitor voltage transformers;
the singlechip is driven by the A-phase switch and then is respectively connected with the control wiring of the electromagnet of the A-phase switch and the control wiring of the opening and closing electromagnet; the singlechip is driven by the B-phase switch and then is respectively connected with a control wiring of a first electromagnet of the B-phase switch and a control wiring of a first switching-on and switching-off electromagnet; the singlechip is driven by the C-phase switch and then is respectively connected with the control wiring of the electromagnet of the C-phase switch and the control wiring of the opening and closing electromagnet;
the current transformer A is connected with the single chip microcomputer after being amplified; the current transformer B is amplified and then connected with the single chip microcomputer; c, the current transformer is connected with the single chip microcomputer after being amplified;
the singlechip is grounded through a switch;
the capacitor voltage reduction and stabilization power supply is respectively and electrically connected with the phase A switch drive, the phase B switch drive and the phase C switch drive through the drive power supply.
6. The 10KV intelligent phase-controlled load switch according to claim 5, wherein the controller is further provided with a communication interface, and the single chip microcomputer is electrically connected with the communication interface.
7. A10 KV intelligent phase-controlled load switch according to claim 5, wherein the controller is further provided with a wireless current transformer interface for receiving a wireless current transformer signal; the singlechip is electrically connected with the wireless current transformer interface.
8. A 10KV intelligent phase-controlled load switch as recited in claim 1, wherein the a-phase switch, the B-phase switch and the C-phase switch are respectively disposed in the high-voltage bushing and then connected to their respective drop fuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022523449.XU CN213877929U (en) | 2020-11-04 | 2020-11-04 | 10KV intelligent phase control load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022523449.XU CN213877929U (en) | 2020-11-04 | 2020-11-04 | 10KV intelligent phase control load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213877929U true CN213877929U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022523449.XU Active CN213877929U (en) | 2020-11-04 | 2020-11-04 | 10KV intelligent phase control load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213877929U (en) |
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2020
- 2020-11-04 CN CN202022523449.XU patent/CN213877929U/en active Active
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