CN216851021U - Device capable of realizing autonomous nuclear phase locking on two sides of handcart of high-voltage switch cabinet - Google Patents
Device capable of realizing autonomous nuclear phase locking on two sides of handcart of high-voltage switch cabinet Download PDFInfo
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- CN216851021U CN216851021U CN202220048557.2U CN202220048557U CN216851021U CN 216851021 U CN216851021 U CN 216851021U CN 202220048557 U CN202220048557 U CN 202220048557U CN 216851021 U CN216851021 U CN 216851021U
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Abstract
The utility model discloses a can realize device of independently nuclear phase shutting in high tension switchgear handcart both sides, relate to the electric wire netting operation, overhaul, the technical field in maintenance field, in order to prevent the emergence of electric accident, including cubical switchboard line side voltage, handcart bus side voltage, voltage switch cabinet handcart both sides voltage acquisition module, voltage public earthing terminal, phase angle comparison module and shutting switch combined floodgate and warning module, voltage switch cabinet handcart both sides voltage acquisition module is used for converting the secondary voltage information of cubical switchboard line side voltage and handcart bus side voltage into the small-signal that phase angle comparison module can handle, phase angle comparison module's output and shutting switch combined floodgate and warning module's input are connected. The utility model discloses a gather voltage on the spot at the secondary storehouse, judge the result on the spot, control combined floodgate function on the spot and the distant place is sent out a letter, and the function is reliable. The high-voltage switch cabinet is low in installation and transformation cost, and transformation work can be carried out even under the condition of once uninterrupted power supply.
Description
Technical Field
The utility model belongs to the technical field of the electric wire netting operation, overhaul, maintain the field and specifically relates to a can realize the device of independently nuclear phase shutting in high tension switchgear handcart both sides.
Background
The high-voltage switch cabinet plays an important role in the power transmission and distribution energy process of a power grid, particularly in the power transmission and distribution network below 35kV, the high-voltage switch cabinet can effectively open and close large current due to small volume, good safety and high reliability, is widely applied, and plays a role in opening and closing loads and removing faults in the electric energy distribution and consumption.
In a traditional power transmission and distribution network, a switch cabinet power supply is arranged on a bus side, and the power distribution network is expanded according to a star shape. However, with the development of urban construction, the development of new energy technologies such as photovoltaic power stations, electric vehicles, charging and discharging stations and the like, the requirement for the reliability of the power grid is further improved, the terminal power transmission and distribution network is more and more complex, a large number of power supply points exist in the terminal power transmission and distribution network, and the situation that power supplies are arranged on two sides of a switch cabinet is more and more common. Therefore, the condition that the switch cabinet is connected to a new power supply point at the line side necessitates the nuclear phase work at the two sides of the switch cabinet.
On the other hand, in urban distribution networks, the use proportion of cables is increased year by year, the power supply line of the cables in the central urban area reaches more than 60%, the cables or overhead lines are damaged by urban construction or developers occasionally, and the fault rate of the cables in the distribution networks is high. After a cable fault occurs, a power supply enterprise needs to quickly repair a fault point, lead a wire again and check the phase conditions of the two sides of the high-voltage switch cabinet again before power transmission is recovered.
In addition, modern terminal transmission and distribution networks are combined with a distributed power generation technology, the operation modes of the distribution networks are more and more complex, the operation modes of the distribution networks are more and more flexible and diversified, the operation efficiency of the distribution networks is improved, and the power-down operation of the distribution networks is more and more frequent. In the case of multiple power supplies of a power distribution network, the power supply conditions on two sides of a high-voltage switch cabinet must be carefully checked to prevent the occurrence of out-phase closed-loop faults of the switch cabinet.
At present, nuclear phase operations on two sides of a high-voltage switch cabinet are more frequent, heavy operation and maintenance cost is brought to power grid enterprises, and the contradiction of less people and more equipment is aggravated. And the out-of-phase switching-on at the two sides of the high-voltage switch cabinet can cause serious accidents, which can cause serious threats to personnel, equipment and a power grid, and the situation must be strictly prevented.
Aiming at the frequent nuclear phase at two sides of a high-voltage switch cabinet in the existing power transmission and distribution network and the situation that the field is manually checked, a device capable of automatically locking the nuclear phase at two sides of a handcart of the high-voltage switch cabinet is designed, the switching-on function of the switch cabinet is locked when the phase is abnormal, and the switching-on accident of the switch cabinet with a phase angle is prevented.
SUMMERY OF THE UTILITY MODEL
In order to prevent the occurrence of electrical accidents, the utility model provides a can realize the device of independently nuclear phase shutting in high tension switchgear handcart both sides.
The utility model provides a can realize the device of independently nuclear phase shutting in high tension switchgear handcart both sides, adopt following technical scheme:
the utility model provides a can realize device of autonomic nuclear phase shutting in high tension switchgear handcart both sides, includes cubical switchboard line side voltage, handcart generating line side voltage, voltage switchgear handcart both sides voltage acquisition module, voltage common grounding terminal, phase angle comparison module and locking switch combined floodgate and alarm module, the input of voltage switchgear handcart both sides voltage acquisition module is connected with cubical switchboard line side voltage, handcart generating line side voltage and voltage common grounding terminal respectively, the output and the phase angle comparison module of voltage switchgear handcart both sides voltage acquisition module are connected, cubical switchboard handcart both sides line side voltage is the voltage that comes from the electrified usefulness of high pressure, and the voltage measurement component that the electrified usefulness of high pressure was instructed is located cubical switchboard handcart line side, handcart generating line side voltage comes from the PT cabinet of cubical switchboard place generating line, be the secondary voltage of mutual-inductor, voltage switchgear handcart both sides voltage acquisition module is used for with cubical switchboard line side voltage and handcart generating line side electric voltage of handcart generating line side The secondary voltage information of the voltage is converted into a small signal which can be processed by a phase angle comparison module, and the output end of the phase angle comparison module is connected with the input end of a closing and alarming module of the locking switch.
Optionally, the phase angle comparison module is configured to calculate an a-phase angle difference, a B-phase angle difference, a C-phase angle difference, or two of them, on both sides of the handcart of the switch cabinet, and the calculation scheme of the phase angle comparison module includes calculating a phase difference between in-phase voltages on both sides of the handcart and a voltage difference between in-phase voltages.
By adopting the technical scheme, the phase difference can be calculated by a method of respectively carrying out two-side phase difference on A, B, C three phases or two of the A, B, C three phases, under the condition that the amplitudes on two sides are the same, the amplitude of the phase difference can be expanded, and an external display module can be selected to be driven to display A, B, C three phases or two comparison results in real time.
Optionally, the locking switch closing and warning module further includes a warning mechanism and a closing mechanism, and an output end of the locking switch closing and warning module is connected to input ends of the warning mechanism and the closing mechanism, respectively.
Optionally, the warning mechanism includes warning speaker, distant place main website and local control backstage, warning speaker is used for broadcasting abnormal information, distant place main website is used for distant place main website to receive alarm information, local control backstage is used for local control backstage to receive alarm information.
Optionally, the switching-on mechanism includes a protection switching-on mechanism, a remote switching-on mechanism and an on-site switching-on mechanism, the protection switching-on mechanism is used for a protection switching-on loop, the remote switching-on mechanism is used for locking the remote position of the switch cabinet, and the on-site switching-on mechanism is used for disconnecting the switching-on loop of the switch cabinet mechanism.
Optionally, the voltage output by the line side voltage of the switch cabinet and the voltage output by the bus side voltage of the handcart are secondary voltages.
By adopting the technical scheme, one-time high pressure introduction at two sides is prevented, so that the safety of equipment and personnel is endangered, and the safety of nuclear phase work is ensured.
Optionally, the alarm mechanism and the closing mechanism both adopt a hard contact mode.
By adopting the technical scheme, the high-voltage switch cabinet can be reliably locked remotely, locally, and can be protected to be switched on or selected.
Optionally, the device for autonomous nuclear phase locking is arranged in a secondary bin of the high-voltage switch cabinet.
By adopting the technical scheme, the voltage signal is collected on the spot, the switch-on of the switch cabinet is judged and locked, and the alarm information is output.
To sum up, the utility model discloses a following at least one beneficial effect:
1. the secondary voltage in the secondary bin in the high-voltage switch cabinet, particularly the PT secondary voltage and the voltage for live display of the cabinet are fully utilized, whether the voltage on two sides of a handcart of the high-voltage switch cabinet has a phase difference or not can be automatically judged, so that a locking switch is switched on and an alarm signal is sent, the intervention of manual nuclear phase is greatly reduced, the automatic operation detection level of the switch cabinet is improved, and the automatic operation and maintenance level of a power distribution network is improved;
2. the voltage is collected in the secondary bin on the spot, the result is judged on the spot, the switching-on function is controlled on the spot, the remote signal is sent, the structure is simple, and the function is reliable. The high-voltage switch cabinet is low in installation and transformation cost, and transformation work can be carried out even under the condition of once uninterrupted power supply.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
fig. 2 is a system block diagram of a closing and warning module of the latching switch of the present invention;
FIG. 3 is a system block diagram of an alarm mechanism of the present invention;
fig. 4 is a system block diagram of the switching-on mechanism of the present invention.
Description of reference numerals: 1. line side voltage of the switch cabinet; 2. handcart bus side voltage; 3. voltage acquisition modules on two sides of a handcart of the high-voltage switch cabinet; 4. a voltage common ground; 5. a phase angle comparison module; 6. a locking switch closing and alarming module; 7. an alarm speaker; 8. a remote master station; 9. a local monitoring background; 10. protecting the switching-on mechanism; 11. a remote switching-on mechanism; 12. a local closing mechanism; 13. an alarm mechanism; 14. a closing mechanism.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-4.
The utility model discloses a device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet, which is arranged in a secondary bin of the high-voltage switch cabinet, collects voltage signals on site, judges and locks the switch cabinet to switch on and outputs alarm information, and comprises a switch cabinet line side voltage 1, a handcart bus side voltage 2 and a voltage switch cabinet handcart two-side voltage collection module 3, voltage common ground terminal 4, phase angle comparison module 5 and blocking switch combined floodgate and alarm module 6, the input of voltage switch cabinet handcart both sides voltage acquisition module 3 is connected with cubical switchboard line side voltage 1, handcart bus side voltage 2 and voltage common ground terminal 4 respectively, the equal secondary voltage of cubical switchboard line side voltage 1 and handcart bus side voltage 2 output prevents to introduce the primary high pressure of both sides, thereby endanger equipment and personnel safety, guarantee the safety of nuclear phase work.
The output end of the voltage collecting module 3 on the two sides of the voltage switch cabinet handcart is connected with the phase angle comparison module 5, the voltage 1 on the line side of the switch cabinet is the voltage for high-voltage live indication, a voltage measuring element for high-voltage live indication is positioned on the line side of the switch cabinet handcart, the voltage 2 on the bus side of the handcart is from the PT cabinet of the bus where the switch cabinet is positioned, the voltage is the secondary voltage of a PT mutual inductor, the voltage collecting module 3 on the two sides of the voltage switch cabinet handcart is used for converting the secondary voltage information of the voltage 1 on the line side of the switch cabinet and the voltage 2 on the bus side of the handcart into a small signal which can be processed by the phase angle comparison module 5, and the output end of the phase angle comparison module 5 is connected with the input end of the locking switch closing and warning module 6.
The phase angle comparison module 5 is used for calculating phase angle difference A, phase angle difference B and phase angle difference C on two sides of a handcart of a switch cabinet, the calculation scheme of the phase angle comparison module 5 comprises the steps of calculating the phase difference between in-phase voltages on two sides of the handcart and the voltage difference between the in-phase voltages, the phase difference can be calculated by a method of performing the phase difference on two sides on A, B, C three phases or two of the same, and the phase difference can be calculated by a method of expanding the amplitude value under the condition that the amplitude values on the two sides are the same, and an external display module can be selectively driven to display A, B, C three phases or two comparison results in real time.
The locking switch closing and alarming module 6 further comprises an alarming mechanism 13 and a closing mechanism 14, the output end of the locking switch closing and alarming module 6 is connected with the input ends of the alarming mechanism 13 and the closing mechanism 14 respectively, and the alarming mechanism 13 and the closing mechanism 14 both adopt a hard contact mode, so that the locking high-voltage switch cabinet can be reliably locked remotely, locally, and protected to be closed or selected.
The closing mechanism 14 comprises a protective closing mechanism 10, a remote closing mechanism 11 and an in-situ closing mechanism 12, wherein the protective closing mechanism 10 is used for protecting a closing loop, the remote closing mechanism 11 is used for closing a remote part of the switch cabinet, and the in-situ closing mechanism 12 is used for disconnecting the closing loop of the switch cabinet mechanism.
The utility model discloses an implementation principle that can realize independently nuclear phase shutting device in high tension switchgear handcart both sides does:
the voltage acquisition modules 3 on the two sides of the handcart of the voltage switch cabinet receive secondary voltages transmitted by a line side voltage 1 and a bus side voltage 2 of the handcart, the voltage acquisition modules 3 on the two sides of the handcart of the voltage switch cabinet convert secondary voltage information into small signals which can be processed by a phase angle comparison module 5, the phase angle comparison module 5 is used for calculating the phase angle difference A, the phase angle difference B and the phase angle difference C or two of the phase angle differences A, the phase angle difference B and the phase angle difference C on the two sides of the handcart of the switch cabinet, by performing a two-side phase difference method on A, B, C three phases or two of the phases, respectively, the phase difference can be calculated by performing a two-side amplitude method on the condition that the amplitudes of two sides are the same, and the external display module can be selectively driven to display A, B, C three phases or two comparison results in real time, and the phase angle comparison module drives the locking switch closing and alarming module to realize the locking closing and alarming functions according to the abnormal condition of either one of A, B, C three phases or two phases.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides a can realize device of independently nuclear phase shutting in high tension switchgear handcart both sides, includes cubical switchboard line side voltage (1), handcart bus side voltage (2), voltage switchgear handcart both sides voltage acquisition module (3), voltage public earthing terminal (4), phase angle comparison module (5) and shutting switch combined floodgate and alarm module (6), its characterized in that: the input end of the voltage switch cabinet handcart two-side voltage acquisition module (3) is respectively connected with a switch cabinet line side voltage (1), a handcart bus side voltage (2) and a voltage common grounding end (4), the output end of the voltage switch cabinet handcart two-side voltage acquisition module (3) is connected with a phase angle comparison module (5), the switch cabinet line side voltage (1) is a voltage from high-voltage electrification indication, a voltage measurement element for high-voltage electrification indication is positioned on the handcart line side of the switch cabinet, the handcart bus side voltage (2) is from a PT cabinet of a bus where the switch cabinet is positioned and is a secondary voltage of a PT mutual inductor, the voltage switch cabinet handcart two-side voltage acquisition module (3) is used for converting secondary voltage information of the switch cabinet line side voltage (1) and the handcart bus side voltage (2) into a small signal which can be processed by the phase angle comparison module (5), the output end of the phase angle comparison module (5) is connected with the input end of the locking switch closing and alarming module (6).
2. The device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet according to claim 1, is characterized in that: the phase angle comparison module (5) is used for calculating phase angle difference A, phase angle difference B and phase angle difference C on two sides of a handcart of the switch cabinet or two of the phase angle difference A, the phase angle difference B and the phase angle difference C, and the calculation scheme of the phase angle comparison module (5) comprises the step of calculating the phase difference between the same-phase voltages on two sides of the handcart and the voltage difference between the same-phase voltages.
3. The device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet according to claim 1, is characterized in that: the locking switch closing and alarming module (6) further comprises an alarming mechanism (13) and a closing mechanism (14), and the output end of the locking switch closing and alarming module (6) is connected with the input ends of the alarming mechanism (13) and the closing mechanism (14) respectively.
4. The device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet according to claim 3, is characterized in that: alarm mechanism (13) are including warning speaker (7), distant place main website (8) and local control backstage (9), warning speaker (7) are used for reporting abnormal information, distant place main website (8) are used for distant place main website to receive alarm information, local control backstage (9) are used for local control backstage to receive alarm information.
5. The device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet according to claim 3, is characterized in that: the closing mechanism (14) comprises a protection closing mechanism (10), a remote closing mechanism (11) and an on-site closing mechanism (12), the protection closing mechanism (10) is used for protecting a closing loop, the remote closing mechanism (11) is used for closing a switch cabinet in a remote mode, and the on-site closing mechanism (12) is used for disconnecting the closing loop of the switch cabinet mechanism.
6. The device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet according to claim 1, is characterized in that: and the voltages output by the line side voltage (1) of the switch cabinet and the bus side voltage (2) of the handcart are secondary voltages.
7. The device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet according to claim 3, is characterized in that: the alarm mechanism (13) and the closing mechanism (14) both adopt a mode of passing through hard contacts.
8. The device capable of realizing autonomous nuclear phase locking on two sides of a handcart of a high-voltage switch cabinet according to claim 7, characterized in that: the device for locking the autonomous nuclear phase is arranged in a secondary bin of the high-voltage switch cabinet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220048557.2U CN216851021U (en) | 2022-01-10 | 2022-01-10 | Device capable of realizing autonomous nuclear phase locking on two sides of handcart of high-voltage switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220048557.2U CN216851021U (en) | 2022-01-10 | 2022-01-10 | Device capable of realizing autonomous nuclear phase locking on two sides of handcart of high-voltage switch cabinet |
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| CN216851021U true CN216851021U (en) | 2022-06-28 |
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| CN202220048557.2U Active CN216851021U (en) | 2022-01-10 | 2022-01-10 | Device capable of realizing autonomous nuclear phase locking on two sides of handcart of high-voltage switch cabinet |
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| CN (1) | CN216851021U (en) |
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- 2022-01-10 CN CN202220048557.2U patent/CN216851021U/en active Active
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