CN112448475B - Switching-on and switching-off control device of high-voltage circuit breaker for ring main unit and working method - Google Patents
Switching-on and switching-off control device of high-voltage circuit breaker for ring main unit and working method Download PDFInfo
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- CN112448475B CN112448475B CN201910822794.2A CN201910822794A CN112448475B CN 112448475 B CN112448475 B CN 112448475B CN 201910822794 A CN201910822794 A CN 201910822794A CN 112448475 B CN112448475 B CN 112448475B
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Abstract
The invention provides a switching-on and switching-off control device of a high-voltage circuit breaker for a ring main unit and a working method, wherein the device comprises the following components: the touch control device comprises a power supply unit, a switch unit and a touch control unit; the power supply unit is electrically connected with the touch control unit and the high-voltage circuit breaker and supplies power to the touch control unit and the high-voltage circuit breaker; one end of the switch unit is electrically connected with the power supply unit, the other end of the switch unit is electrically connected with the touch control unit, and the switch unit is used for cutting off or closing a power supply circuit between the power supply unit and the touch control unit; the other end of the switch unit is also electrically connected with an energy storage control loop of the high-voltage circuit breaker, and the switch unit is used for cutting off or closing a power supply circuit between the power supply unit and the energy storage control loop of the high-voltage circuit breaker; the touch unit is electrically connected with the high-voltage circuit breaker, and sends a control signal to the high-voltage circuit breaker to control the high-voltage circuit breaker to perform switching-off or switching-on operation, so that the personal safety of operators is ensured.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a switching-on and switching-off control device of a high-voltage circuit breaker for a ring main unit and a working method.
Background
At present, the on-off control of the high-voltage circuit breaker of the ring main unit generally adopts the following two modes:
remote control: under the condition that the ring main unit UPS works normally and network communication is normal, the high-voltage circuit breaker is subjected to remote opening and closing control through the remote monitoring system.
Local control: the on-off control of the high-voltage circuit breaker is realized by manually pressing a switch-on button and a switch-off button on a panel of the high-voltage circuit breaker by an operator.
In the process of remote control, if the power-off time is too long, the UPS can be automatically turned off, and the remote monitoring system cannot work, so that the high-voltage circuit breaker cannot be remotely controlled to be switched on and off.
In the process of adopting local control, because operating personnel often is nearer from high-voltage equipment, in case take place the short circuit, draw the arc scheduling problem, personnel may receive injuries such as "electric arc burn, explosion, tinnitus, can't guarantee operating personnel's personal safety completely.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the switching-on and switching-off control device of the high-voltage circuit breaker for the ring main unit, which improves the existing local control mode, avoids personal injury accidents when personnel operate locally, and ensures the personal safety of the operators.
The invention is realized by the following technical scheme:
the utility model provides a high tension circuit breaker's divide-shut brake controlling means for looped netowrk cabinet, includes:
the touch unit is electrically connected with the high-voltage circuit breaker and sends a control signal to the high-voltage circuit breaker to control the high-voltage circuit breaker to perform opening or closing operation.
Furthermore, the touch control device further comprises a power supply unit, wherein the power supply unit is electrically connected with the touch control unit and the high-voltage circuit breaker and supplies power to the touch control unit and the high-voltage circuit breaker.
The touch control device further comprises a switch unit, one end of the switch unit is electrically connected with the power supply unit, the other end of the switch unit is electrically connected with the touch control unit, and the switch unit is used for cutting off or closing a power supply circuit between the power supply unit and the touch control unit.
Furthermore, the other end of the switch unit is also electrically connected to the energy storage control loop of the high-voltage circuit breaker, and the switch unit is used for cutting off or closing a power supply line between the power supply unit and the energy storage control loop of the high-voltage circuit breaker.
Furthermore, the touch unit comprises a first separating brake touch controller, one end of the first separating brake touch controller is electrically connected to the switch unit, and the other end of the first separating brake touch controller is electrically connected to a separating brake control loop of the high-voltage circuit breaker;
and when the first brake separating touch controller is in a closed state, a brake separating control signal is sent to a brake separating control loop of the high-voltage circuit breaker and is used for controlling the brake separating control loop of the high-voltage circuit breaker to carry out brake separating operation.
The high-voltage circuit breaker further comprises a first closing touch controller, wherein one end of the first closing touch controller is electrically connected to the switch unit, and the other end of the first closing touch controller is electrically connected to a closing control loop of the high-voltage circuit breaker;
and when the first closing touch controller is in a closed state, a closing control signal is sent to a closing control loop of the high-voltage circuit breaker and is used for controlling the closing control loop of the high-voltage circuit breaker to perform closing operation.
The high-voltage circuit breaker further comprises a second switching-on touch controller, wherein one end of the second switching-on touch controller is electrically connected to the first switching-off touch controller, and the other end of the second switching-on touch controller is electrically connected to a switching-off control loop of the high-voltage circuit breaker;
when the first closing touch controller is in a closed state, a closing control signal is sent to a closing control loop of the high-voltage circuit breaker and is used for controlling the closing control loop of the high-voltage circuit breaker to perform closing operation, and the second closing touch controller is in an open state.
The high-voltage circuit breaker further comprises a second switching-off touch controller, wherein one end of the second switching-off touch controller is electrically connected to the first switching-on touch controller, and the other end of the second switching-off touch controller is electrically connected to a switching-on control loop of the high-voltage circuit breaker;
and when the first switching-off touch controller is in a closed state, a switching-off control signal is sent to a switching-off control loop of the high-voltage circuit breaker and is used for controlling the switching-off control loop of the high-voltage circuit breaker to perform switching-off operation, and the second switching-off touch controller is in an open state.
The working method for performing the opening and closing operation of the high-voltage circuit breaker by adopting the opening and closing control device of the high-voltage circuit breaker for the ring main unit comprises the following steps:
s1, checking the switch state of the ring main unit, and disconnecting a UPS power supply switch of the ring main unit;
s2, closing the switch unit, and supplying power to the touch unit and the high-voltage circuit breaker by the power supply unit;
when closing operation is carried out, a first closing touch controller is closed, the first closing touch controller sends a closing control signal to a closing control loop of the high-voltage circuit breaker to determine whether closing sound is heard or not, if not, a switch unit is disconnected, the closing control loop is checked, if yes, whether abnormity occurs or not is continuously determined, if abnormity occurs, the first opening touch controller is closed, the switch unit is disconnected, the abnormity is checked, if no abnormity occurs, the switch unit is disconnected, and the electric connection between the touch control unit and the high-voltage circuit breaker for the ring main unit is disconnected;
when the opening operation is carried out, the first opening touch controller is closed, the first opening touch controller sends an opening control signal to an opening control loop of the high-voltage circuit breaker, and the opening and closing state of the high-voltage circuit breaker is observed after opening sound is heard;
s3: and closing the UPS power supply switch of the ring main unit to finish the operation.
Further, before the step S2, the switching unit is turned off, and whether the first closing touch controller and the first opening touch controller are both in a normally open state is checked, if yes, the step S2 is executed, and if not, whether the connection between the first opening touch controller and the second opening touch controller is reliable and whether the on-off function is intact is checked.
Compared with the closest prior art, the technical scheme of the invention has the following beneficial effects:
according to the switching-on and switching-off control device of the high-voltage circuit breaker for the ring main unit, the switching-on and switching-off operation of the high-voltage circuit breaker is remotely controlled through the device in the local control process, an operator does not need to approach the ring main unit for operation, personal injury accidents of the operator in the operation process are avoided, and the personal safety of the operator is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a switching control device of a high-voltage circuit breaker for a ring main unit according to a first embodiment of the present invention;
fig. 2 is a block diagram of a connection structure of the switching-on/off control device and the high-voltage circuit breaker according to the first embodiment of the invention;
FIG. 3 is a schematic circuit diagram of a touch unit according to a first embodiment of the invention;
fig. 4 is a block diagram of a switching control device of the high-voltage circuit breaker for the ring main unit according to a second embodiment of the present invention;
fig. 5 is a block diagram of a connection structure between the switching control device and the high-voltage circuit breaker according to a second embodiment of the present invention;
FIG. 6 is a schematic circuit diagram of a touch unit according to a second embodiment of the present invention;
FIG. 7 is a circuit diagram of a touch unit according to a third embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1-2, the switching-on/off control device of the high-voltage circuit breaker for the ring main unit of the present invention includes: the device comprises a power supply unit and a touch unit;
the power supply unit is electrically connected with the touch control unit and the high-voltage circuit breaker and supplies power to the touch control unit and the high-voltage circuit breaker; specifically, the power supply unit is electrically connected with the touch unit, the touch unit is electrically connected with the high-voltage circuit breaker, and the current of the power supply unit sequentially passes through the touch unit and the high-voltage circuit breaker to supply power to the touch unit and the high-voltage circuit breaker.
The touch unit is electrically connected with the high-voltage circuit breaker and sends a control signal to the high-voltage circuit breaker for controlling the high-voltage circuit breaker to perform switching-off or switching-on operation;
specifically, as shown in fig. 3, the touch unit includes a first opening touch controller and a first closing touch controller;
one end of the first brake separating touch controller is electrically connected with the switch unit, and the other end of the first brake separating touch controller is electrically connected with a brake separating control loop of the high-voltage circuit breaker;
when the first switching-off touch controller is in a closed state, a switching-off control signal is sent to a switching-off control loop of the high-voltage circuit breaker and is used for controlling the switching-off control loop of the high-voltage circuit breaker to perform switching-off operation;
one end of the first closing touch controller is electrically connected with the switch unit, and the other end of the first closing touch controller is electrically connected with a closing control loop of the high-voltage circuit breaker;
and when the first closing touch controller is in a closed state, a closing control signal is sent to a closing control loop of the high-voltage circuit breaker and is used for controlling the closing control loop of the high-voltage circuit breaker to perform closing operation.
When the device is used, the device is electrically connected with the ring main unit in a long distance, and when an operator controls the opening and closing operation of the high-voltage circuit breaker of the ring main unit, the operator does not need to be close to the ring main unit, so that the personal safety of the operator is ensured.
The power supply unit can specifically adopt a battery box or other power supply equipment;
the first opening touch controller and the first closing touch controller can adopt buttons or other touch control equipment;
for example, in the case that the power supply unit is electrically connected with the touch control unit, the power supply unit is electrically connected with the touch control unit through the power supply cable, two ends of the power supply cable are connected with the aviation plug, one aviation plug is connected with a power supply port of the power supply unit, and the aviation plug at the other end is connected with a power supply input port of the touch control unit.
Example 2:
in this embodiment, on the basis of embodiment 1, the control device further includes a switch unit, which is provided with an obvious disconnectable point between the power supply unit and the touch unit for rapidly cutting off power supply in an emergency to ensure safety, as shown in fig. 4-5, one end of the switch unit is electrically connected to the power supply unit, and the other end of the switch unit is electrically connected to the touch unit and an energy storage control loop of the high-voltage circuit breaker;
the power supply circuit is electrically connected with the touch control unit and used for cutting off or closing a power supply circuit between the power supply unit and the touch control unit;
and the energy storage control loop is electrically connected with the high-voltage circuit breaker and is used for cutting off or closing a power supply circuit between the power supply unit and the energy storage control loop of the high-voltage circuit breaker.
The switch unit may be configured as an independent unit, or may be configured in the touch unit as a sub-unit of the touch unit, and fig. 6 is a circuit connection diagram of the touch unit when the switch unit is configured as a sub-unit in the touch unit;
the above-mentioned electric connection mode is implemented by using cable.
The switch unit may be a button or other device having a switch function.
The working method for performing the opening and closing operation of the high-voltage circuit breaker by adopting the opening and closing control device of the high-voltage circuit breaker for the ring main unit specifically comprises the following steps:
s1, checking the switch state of the ring main unit, and disconnecting a UPS power supply switch of the ring main unit;
s2, disconnecting the switch unit, checking whether the first closing touch controller and the first separating brake touch controller are both in a normally open state, if so, executing the step S3, otherwise, checking whether the connection of the first closing touch controller and the second separating brake touch controller is reliable or not, and whether the on-off function is intact or not;
checking whether the first closing touch controller and the first separating brake touch controller are both in a normally open state, specifically, disconnecting the switch unit, measuring the on-off condition between two wiring terminals of the first closing touch controller by using a universal meter, if the two wiring terminals are in a disconnected condition, the first separating brake touch controller is in the normally open state, and checking whether the second separating brake touch controller is in the normally open state by using the same method;
by executing the step S2 before executing the step S3, the normal function of the touch unit is ensured to be executed. S3, closing the switch unit, and supplying power to the touch unit and the high-voltage circuit breaker by the power supply unit;
when closing operation is carried out, a first closing touch controller is closed, the first closing touch controller sends a closing control signal to a closing control loop of the high-voltage circuit breaker to determine whether closing sound is heard or not, if not, a switch unit is disconnected, the closing control loop is checked, if yes, whether abnormity occurs or not is continuously determined, if abnormity occurs, the first opening touch controller is closed, the switch unit is disconnected, the abnormity is checked, if no abnormity occurs, the switch unit is disconnected, and the electric connection between the touch control unit and the high-voltage circuit breaker for the ring main unit is disconnected;
when the opening operation is carried out, the first opening touch controller is closed, the first opening touch controller sends an opening control signal to an opening control loop of the high-voltage circuit breaker, and the opening and closing state of the high-voltage circuit breaker is observed after opening sound is heard;
s4: and closing the UPS power supply switch of the ring main unit to finish the operation.
Example 3
In order to avoid the occurrence of an opening operation during a closing operation, on the basis of embodiment 2, as shown in fig. 7, the touch unit further includes a second closing touch controller, wherein one end of the second closing touch controller is electrically connected to the first opening touch controller, and the other end of the second closing touch controller is electrically connected to an opening control loop of the high-voltage circuit breaker;
when the first closing touch controller is in a closed state, a closing control signal is sent to a closing control loop of the high-voltage circuit breaker and is used for controlling the closing control loop of the high-voltage circuit breaker to perform closing operation, the second closing touch controller is in an open state, and therefore opening operation cannot occur during closing operation;
when the switching-off operation is carried out, in order to avoid the switching-on operation, the touch control unit further comprises a second switching-off touch controller, wherein one end of the second switching-off touch controller is electrically connected to the first switching-on touch controller, and the other end of the second switching-off touch controller is electrically connected to a switching-on control loop of the high-voltage circuit breaker;
when the first switching-off touch controller is in a closed state, a switching-off control signal is sent to a switching-off control loop of the high-voltage circuit breaker and is used for controlling the switching-off control loop of the high-voltage circuit breaker to perform switching-off operation, and the second switching-off touch controller is in an open state, so that switching-on operation cannot occur during switching-off operation.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (4)
1. The utility model provides a looped netowrk is high voltage circuit breaker's divide-shut brake controlling means for cabinet, its characterized in that includes:
the touch control unit is electrically connected with the high-voltage circuit breaker and sends a control signal to the high-voltage circuit breaker for controlling the high-voltage circuit breaker to perform switching-off or switching-on operation;
the touch control unit is electrically connected with the high-voltage circuit breaker and the power supply unit;
the touch control device also comprises a switch unit, wherein one end of the switch unit is electrically connected with the power supply unit, the other end of the switch unit is electrically connected with the touch control unit, and the switch unit is used for cutting off or closing a power supply circuit between the power supply unit and the touch control unit;
the other end of the switch unit is also electrically connected with an energy storage control loop of the high-voltage circuit breaker, and the switch unit is used for cutting off or closing a power supply circuit between the power supply unit and the energy storage control loop of the high-voltage circuit breaker;
the touch control unit comprises a first brake separating touch controller, one end of the first brake separating touch controller is electrically connected with the switch unit, and the other end of the first brake separating touch controller is electrically connected with a brake separating control loop of the high-voltage circuit breaker;
when the first switching-off touch controller is in a closed state, a switching-off control signal is sent to a switching-off control loop of the high-voltage circuit breaker and is used for controlling the switching-off control loop of the high-voltage circuit breaker to perform switching-off operation;
the touch control unit further comprises a first closing touch controller, one end of the first closing touch controller is electrically connected to the switch unit, and the other end of the first closing touch controller is electrically connected to a closing control loop of the high-voltage circuit breaker;
when the first closing touch controller is in a closed state, a closing control signal is sent to a closing control loop of the high-voltage circuit breaker and is used for controlling the closing control loop of the high-voltage circuit breaker to perform closing operation;
the working method for performing the opening and closing operation of the high-voltage circuit breaker by adopting the opening and closing control device of the high-voltage circuit breaker for the ring main unit comprises the following steps:
s1, checking the switch state of the ring main unit, and disconnecting a UPS power supply switch of the ring main unit;
s2, closing the switch unit, and supplying power to the touch unit and the high-voltage circuit breaker by the power supply unit;
when the switching-on operation is carried out, a first switching-on touch controller is closed, the first switching-on touch controller sends a switching-on control signal to a switching-on control loop of the high-voltage circuit breaker to determine whether switching-on sound is heard or not, if not, a switch unit is disconnected, the switching-on control loop is checked, if yes, whether abnormity occurs or not is continuously determined, if abnormity occurs, the first switching-off touch controller is closed, the switch unit is disconnected, the abnormity is checked, and if no abnormity occurs, the switch unit is disconnected, and the electric connection between the touch control unit and the high-voltage circuit breaker for the ring main unit is disconnected;
when the opening operation is carried out, the first opening touch controller is closed, the first opening touch controller sends an opening control signal to an opening control loop of the high-voltage circuit breaker, and the opening and closing state of the high-voltage circuit breaker is observed when opening sound is heard;
s3: and closing the UPS power supply switch of the ring main unit to finish the operation.
2. The switching-on and switching-off control device of the high-voltage circuit breaker for the ring main unit according to claim 1, wherein the touch unit further comprises a second switching-on touch controller, one end of the second switching-on touch controller is electrically connected to the first switching-off touch controller, and the other end of the second switching-on touch controller is electrically connected to a switching-off control loop of the high-voltage circuit breaker;
when the first closing touch controller is in a closed state, a closing control signal is sent to a closing control loop of the high-voltage circuit breaker and is used for controlling the closing control loop of the high-voltage circuit breaker to perform closing operation, and the second closing touch controller is in an open state.
3. The switching-on and switching-off control device of the high-voltage circuit breaker for the ring main unit according to claim 2, wherein the touch unit further comprises a second switching-off touch controller, one end of the second switching-off touch controller is electrically connected to the first switching-on touch controller, and the other end of the second switching-off touch controller is electrically connected to a switching-on control loop of the high-voltage circuit breaker;
and when the first switching-off touch controller is in a closed state, a switching-off control signal is sent to a switching-off control loop of the high-voltage circuit breaker and is used for controlling the switching-off control loop of the high-voltage circuit breaker to perform switching-off operation, and the second switching-off touch controller is in an open state.
4. The switching-on and switching-off control device of the high-voltage circuit breaker for the ring main unit according to claim 1, wherein before the step S2, the switching unit is disconnected, whether the first closing touch controller and the first switching-off touch controller are both in a normally open state is checked, if yes, the step S2 is executed, and if not, whether the wiring of the first switching-off touch controller and the first switching-on touch controller is reliable or the switching-on and switching-off function is intact is checked.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822794.2A CN112448475B (en) | 2019-09-02 | 2019-09-02 | Switching-on and switching-off control device of high-voltage circuit breaker for ring main unit and working method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822794.2A CN112448475B (en) | 2019-09-02 | 2019-09-02 | Switching-on and switching-off control device of high-voltage circuit breaker for ring main unit and working method |
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| Publication Number | Publication Date |
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| CN112448475A CN112448475A (en) | 2021-03-05 |
| CN112448475B true CN112448475B (en) | 2022-12-27 |
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| JPH08203392A (en) * | 1995-01-30 | 1996-08-09 | Mitsubishi Electric Corp | Device for closing and tripping circuit breaker |
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| CN104167713A (en) * | 2014-08-21 | 2014-11-26 | 刘剑华 | Automatic brake opening protection device for loss of voltage of high-tension switch board low-voltage power source |
| CN204649867U (en) * | 2015-05-21 | 2015-09-16 | 广东电网有限责任公司佛山供电局 | Switch cart detects commissioning device |
| CN105356585A (en) * | 2015-11-25 | 2016-02-24 | 国网河南新密市供电公司 | Breaker closing and blocking loop |
| CN209266864U (en) * | 2019-01-04 | 2019-08-16 | 福建电力职业技术学院 | A kind of switchgear, breaker and division brake control device |
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2019
- 2019-09-02 CN CN201910822794.2A patent/CN112448475B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08203392A (en) * | 1995-01-30 | 1996-08-09 | Mitsubishi Electric Corp | Device for closing and tripping circuit breaker |
| CN201629258U (en) * | 2010-07-16 | 2010-11-10 | 河南省电力公司漯河供电公司 | Low SF6 gas pressure blocking control loop of high-voltage circuit breaker |
| CN104167713A (en) * | 2014-08-21 | 2014-11-26 | 刘剑华 | Automatic brake opening protection device for loss of voltage of high-tension switch board low-voltage power source |
| CN204649867U (en) * | 2015-05-21 | 2015-09-16 | 广东电网有限责任公司佛山供电局 | Switch cart detects commissioning device |
| CN105356585A (en) * | 2015-11-25 | 2016-02-24 | 国网河南新密市供电公司 | Breaker closing and blocking loop |
| CN209266864U (en) * | 2019-01-04 | 2019-08-16 | 福建电力职业技术学院 | A kind of switchgear, breaker and division brake control device |
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