CN111130081B - System and method for reducing electric energy loss by additionally arranging current-limiting reactor bypass switch - Google Patents
System and method for reducing electric energy loss by additionally arranging current-limiting reactor bypass switch Download PDFInfo
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- CN111130081B CN111130081B CN202010250075.0A CN202010250075A CN111130081B CN 111130081 B CN111130081 B CN 111130081B CN 202010250075 A CN202010250075 A CN 202010250075A CN 111130081 B CN111130081 B CN 111130081B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/021—Current limitation using saturable reactors
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Abstract
The invention provides a system for reducing electric energy loss by additionally arranging a bypass switch of a current-limiting reactor, which comprises: the device comprises a capacitor, a current-limiting reactor, a current transformer, a circuit breaker, a bypass switch and a measurement and control unit, wherein a primary winding of the current transformer is connected with one end of the circuit breaker, the other end of the circuit breaker is respectively connected with one end of the current-limiting reactor and one end of the bypass switch, and the other end of the current-limiting reactor and the other end of the bypass switch are connected with the capacitor; the invention also provides a method for reducing electric energy loss by additionally arranging the current limiting reactor bypass switch, which can inhibit inrush current at the moment of capacitor input, improve power supply quality, enable the reactor to timely quit the circuit after the capacitor is put into operation, reduce electric energy loss and have low requirement on time response speed.
Description
Technical Field
The invention relates to the technical field of regulating electric energy loss of a current-limiting reactor, in particular to a system and a method for reducing electric energy loss by additionally arranging a bypass switch of the current-limiting reactor.
Background
After the 10kV parallel capacitor is installed in the transformer substation, the power factor of a transformer substation line can be improved, reactive power is compensated, voltage can be improved, line loss is reduced, electric charge expenditure is reduced, energy is saved, transmission of active capacity of a power grid is increased, and the service efficiency of equipment is improved.
Referring to fig. 1, D L in fig. 1 represents a circuit breaker for controlling switching of a capacitor C, CT represents a current transformer, if a current-limiting reactor is not added to the capacitor C, the voltage between the two terminals of the capacitor C is zero before the capacitor C is not operated, and as can be known from electrical theory, the voltage across the two terminals of the capacitor C cannot change abruptly, so that the voltage across the two terminals of the capacitor C is still zero at the moment after the switch of the capacitor C loop is switched on and the power is transmitted, at this moment, all the voltage is applied between the loop before the capacitor C, and because the loop resistance is very small, the voltage will generate a large inrush current in the loop, after several hundred milliseconds to several seconds, the two terminals of the capacitor C are charged stably, and the loop can recover to a normal rated current.
The existing method for additionally installing a current-limiting reactor fast bypass switch is mainly applied to the current-limiting operation when a system has a short-circuit fault, the action requirement of the fast bypass switch is high, the fast bypass switch needs to be quickly disconnected through a fuse and the switch, otherwise, the current-limiting effect cannot be achieved, the requirement on the response speed is strict, the requirement on the time response speed is not strict for the current limiting of a conventional capacitor bank, the additionally installed current-limiting reactor only plays a role at the moment of capacitor operation, and the side effect of electric energy loss caused by other time is larger on the contrary, so the current limiting of the conventional capacitor bank is more focused on reducing the electric energy loss, and the existing method for additionally installing the current-limiting reactor fast bypass switch is not applicable to the current limiting of the capacitor bank.
In summary, when the capacitor bank is put into operation, how to reduce the power loss of the system by additionally installing the current-limiting reactor bypass switch becomes a problem to be solved urgently.
Disclosure of Invention
When the current-limiting reactor is additionally arranged in the capacitor bank, the defect of increasing the electric energy loss of the system is caused, and a user has to adopt the current-limiting reactor to inhibit the inrush current at the moment of switching on the capacitor.
The present invention aims to solve the above technical problem at least to some extent.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a system for reducing electric energy loss by additionally arranging a current-limiting reactor bypass switch comprises a capacitor C, a current-limiting reactor, a current transformer, a breaker D L for controlling switching of the capacitor C, a bypass switch F and a measurement and control unit, wherein a primary winding of the current transformer is connected with one end of a breaker D L, the other end of a breaker D L is respectively connected with one end of the current-limiting reactor and one end of the bypass switch F, the other end of the current-limiting reactor and the other end of the bypass switch F are connected with the capacitor C, the measurement and control unit is provided with a current relay L J, the current relay L J is connected with a secondary winding of the current transformer, and the measurement and control unit controls opening and closing of the bypass switch F through the action state of the current relay.
In this application, the measurement and control unit is the design of secondary circuit, monitors, controls, measures and adjusts the operating mode of the primary circuit at condenser C place, utilizes current relay L J in the measurement and control unit to connect in series into the secondary winding of the current transformer of system, realizes the monitoring to the primary circuit operating mode at condenser C place, like voltage current and switch on-off condition.
Preferably, the measurement and control unit comprises an alternating current loop unit and a direct current loop unit, the alternating current loop unit is formed by connecting a current relay L J and a secondary winding of the current transformer in series, the direct current loop unit comprises a closing loop and a breaking loop, the closing loop is connected with the breaking loop in parallel, the current relay L J controls the closing of the closing loop to control the closing of the bypass switch F, and the current relay L J controls the breaking of the bypass switch F by controlling the closing of the breaking loop.
Preferably, the closing circuit comprises a time-delay normally-open contact L J1, a first auxiliary contact QF1 and a closing coil HC, the time-delay normally-open contact L J1, the first auxiliary contact QF1 and the closing coil HC are sequentially connected in series, the opening circuit comprises a normally-closed contact L J2, a second auxiliary contact QF2 and an opening coil TC, and the normally-closed contact L J2, the second auxiliary contact QF2 and the opening coil TC are sequentially connected in series.
Preferably, when the circuit breaker D L is turned off and the capacitor C is not in operation, the current relay L J of the measurement and control unit does not act, the normally closed contact L J2 of the opening circuit is turned on, the second auxiliary contact QF2 is turned on, the opening coil TC is electrified to act, the bypass switch F is opened, the current limiting reactor is connected to the system, the circuit breaker D L is used for controlling the switching of the capacitor C, the circuit breaker D L is turned off, the capacitor C is not in operation, and the current limiting reactor is connected to the system to prepare for the operation of the capacitor C and play a role in suppressing the inrush current at the early stage of the operation of the capacitor C.
Preferably, when the capacitor C is not in operation, the measurement and control unit monitors that the current amplitude flowing through the current relay L J is zero, the measurement and control unit can monitor the current through the existing relatively mature operation, and when the capacitor C is not in operation, the current of the system where the capacitor C is located is zero, so that the measurement and control unit monitors that the current amplitude flowing through the current relay L J is also zero.
Preferably, after the capacitor C is put into operation and the system current is stable, the current relay L J operates, the delay normally-open contact L J1 of the closing loop is turned on after t seconds of delay, the first auxiliary contact QF1 is closed, the closing coil HC is energized to operate, the bypass switch F is closed, and the current-limiting reactor exits the system.
Here, the delay time t of setting for delay normally open contact L J1 is in order to match the completion of charging of condenser C, and whole measurement and control unit is after the electric current of monitoring the system is stable like this, through the delay time t of setting for, automatic switch-on delay normally open contact L J1, has avoided artificial control bypass switch, can guarantee again to drop into the operation back at condenser C stability, in time withdraw from of current limiting reactor, reduces because of the huge power loss that current limiting reactor exists and cause.
Preferably, the system current is stabilized according to the standard that the measurement and control unit monitors that the current flowing through the current relay L J is rated current t1 seconds after the capacitor C is put into operationI。
Here, the set capacitor C operation time t1 represents the time of the whole charging process of the capacitor C after the capacitor C is put into operation, when the charging of the capacitor C is completed, the current of the capacitor loop returns to normal, and the current flowing through the current relay L J monitored by the measurement and control unit is the rated current I.
Preferably, the delay time t of the delay normally-open contact L J1 of the closing circuit is greater than t1, so that when the delay normally-open contact L J1 is switched on after the delay time t seconds, the capacitor C is charged in t1 seconds, and the whole system enters a stable state.
Preferably, the first auxiliary contact QF1 is automatically opened and the second auxiliary contact QF2 is automatically closed after the energizing operation of the closing coil HC; the second auxiliary contact QF2 is automatically switched off after the opening coil TC is electrified, and the first auxiliary contact QF1 is automatically switched on, so that the phenomenon that the closing coil HC and the opening coil TC are burnt out due to long-time electrification is avoided.
Here, the on and off of the first auxiliary contact QF1 and the second auxiliary contact QF2 are associated with the on/off state of the bypass switch F, that is, when the bypass switch is opened after the opening coil TC is energized, the second auxiliary contact QF2 is automatically opened, and the first auxiliary contact QF1 is automatically turned on, in preparation for the next closing, and when the bypass switch F is closed after the closing coil HC is energized, the first auxiliary contact QF1 is automatically turned off, and the second auxiliary contact QF2 is automatically turned on, in preparation for the next closing.
A method for reducing electric energy loss by additionally arranging a current-limiting reactor bypass switch at least comprises the following steps:
s1, connecting the end b of a bypass switch F with the end a of a current-limiting reactor, and connecting the end d of the bypass switch F with the end c of the current-limiting reactor;
s2, connecting a current relay L J in the measurement and control unit with a secondary winding of a current transformer;
s3, judging whether the capacitor C is put into operation, if so, executing a step S4, otherwise, not operating the current relay L J, opening the brake of the bypass switch F, and connecting the current-limiting reactor into the circuit;
and S4, judging whether the system current is stable, if so, actuating a current relay L J, closing a bypass switch F, and withdrawing the current-limiting reactor from the circuit, otherwise, not actuating a current relay L J.
After a current relay L J in the measurement and control unit is connected with a secondary winding of the current transformer, the measurement and control unit can monitor the current flowing through the current relay L J, so that the current of a system where a primary winding of the current transformer, namely a capacitor C, is located is monitored, whether the capacitor C is put into operation is judged by judging whether the amplitude of the current flowing through the current relay L J is zero, and whether the system current is stable is judged by monitoring whether the current flowing through the current relay L J is rated current.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention provides a system and a method for reducing electric energy loss by additionally arranging a bypass switch of a current-limiting reactor, which control the opening and closing of a bypass switch F according to the action state of the response of a current relay in a measurement and control unit by judging whether a capacitor is put into operation and whether the system current is stable, thereby controlling the input and the exit of the current-limiting reactor: when the capacitor is not put into operation, the current relay does not act, the bypass switch is switched off, and the current-limiting reactor is put into a circuit to prepare for putting the capacitor into operation, so that the inrush current phenomenon before the capacitor is charged stably is inhibited, and the power supply quality is improved; when the current of the capacitor loop is stable, the current relay acts, the bypass switch is switched on, and the current-limiting reactor exits the circuit, so that the electric energy loss of the system is reduced, and the requirement on time response speed is low because the cooperation of devices with high time response speed performance requirements such as a fuse, a quick switch and the like is not needed.
Drawings
Fig. 1 is a circuit diagram of the capacitor operation proposed in the background of the invention.
Fig. 2 is a schematic circuit structure diagram of a bypass switch with a current-limiting reactor according to an embodiment of the present invention.
Fig. 3 is a circuit structure diagram of the structure measurement and control unit M in fig. 2.
Fig. 4 is a schematic flow chart of a method for reducing electric energy loss by additionally installing a current-limiting reactor bypass switch provided by the invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for better illustration of the present embodiment, certain parts of the drawings may be omitted, enlarged or reduced, and do not represent actual dimensions;
it will be understood by those skilled in the art that certain well-known illustrations in the drawings may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
The invention provides a system for reducing electric energy loss by additionally arranging a current-limiting reactor bypass switch, which is shown in a schematic structural diagram of fig. 2 and comprises a capacitor C, a current-limiting reactor 1, a current transformer 2, a breaker D L for controlling the switching of the capacitor C, a bypass switch F and a measurement and control unit 3, wherein a primary winding 21 of the current transformer 2 is connected with one end of a breaker D L, the other end of a breaker D L is respectively connected with one end of the current-limiting reactor 1 and one end of the bypass switch F, the other end of the current-limiting reactor 1 and the other end of the bypass switch F are connected with the capacitor C, the measurement and control unit 3 is provided with a current relay L J, the current relay L J is connected with a secondary winding 22 of the current transformer 2, and the measurement and control unit 3 controls the opening and closing of.
During specific implementation, the measurement and control unit 3 is designed as a secondary loop, monitors, controls, measures and adjusts the working condition of the primary loop where the capacitor C is located, and monitors the working condition of the primary loop where the capacitor C is located, such as voltage, current and on-off conditions of a switch, by serially connecting the current relay L J in the measurement and control unit 3 into the secondary winding 22 of the current transformer 2 of the system.
The structure M in fig. 2 shows the measurement and control unit 3, specifically, a circuit structure diagram of the measurement and control unit 3 is shown in fig. 3, the measurement and control unit 3 includes an ac loop unit 31 and a dc loop unit 32, the ac loop unit 31 is formed by connecting a current relay L J in series with a secondary winding 22 of a current transformer 2, the dc loop unit 32 includes a closing loop 321 and a separating loop 322, the closing loop 321 is connected in parallel with the separating loop 322, the current relay L J controls the closing of the bypass switch F by controlling the closing of the closing loop 321, and the current relay L J controls the opening of the bypass switch F by controlling the closing of the separating loop 322.
The closing loop 321 comprises a time-delay normally-open contact L J1, a first auxiliary contact QF1 and a closing coil HC, the time-delay normally-open contact L J1, the first auxiliary contact QF1 and the closing coil HC are sequentially connected in series, the opening loop 322 comprises a normally-closed contact L J2, a second auxiliary contact QF2 and an opening coil TC, and the normally-closed contact L J2, the second auxiliary contact QF2 and the opening coil TC are sequentially connected in series.
With reference to fig. 2 and fig. 3, in this embodiment, when the circuit breaker D L is turned off and the capacitor C is not in operation, the current relay L J of the measurement and control unit 3 does not operate, the normally closed contact L J2 of the opening circuit is turned on, the second auxiliary contact QF2 is closed, the opening coil TC is energized to operate, the bypass switch F opens, the current limiting reactor is connected to the system, the circuit breaker D L is used to control the switching of the capacitor C, the circuit breaker D L is turned off, the capacitor C is not in operation, and the current limiting reactor is connected to the system, so as to prepare for the operation of the capacitor C and suppress the inrush current at the early stage of the operation of the capacitor C.
When the capacitor C is not in operation, the measurement and control unit monitors that the amplitude of the current flowing through the current relay L J is zero, and when the capacitor C is not in operation, the current of the system where the capacitor C is located is zero, so that the measurement and control unit monitors that the amplitude of the current flowing through the current relay L J is also zero.
After the capacitor C is put into operation and the system current is stable, the current relay L J acts, the delay normally-open contact L J1 of the closing loop is switched on after t seconds of delay, the first auxiliary contact QF1 is closed, the closing coil HC acts in a power-on mode, the bypass switch F is closed, and the current-limiting reactor exits the system.
Here, the delay time t of setting for delay normally open contact L J1 is in order to match the completion of charging of condenser C, and whole measurement and control unit is after the electric current of monitoring the system is stable like this, through the delay time t of setting for, automatic switch-on delay normally open contact L J1, has avoided artificial control bypass switch, can guarantee again to drop into the operation back at condenser C stability, in time withdraw from of current limiting reactor, reduces because of the huge power loss that current limiting reactor exists and cause.
The standard of the system current stability is that the measurement and control unit monitors that the current flowing through the current relay L J is rated current after the capacitor C is put into operation for t1 secondsI。
Here, the set capacitor C operation time t1 represents the time of the whole charging process of the capacitor C after the capacitor C is put into operation, when the charging of the capacitor C is completed, the current of the capacitor loop returns to normal, and the current flowing through the current relay L J monitored by the measurement and control unit is the rated current I.
In the embodiment, t1 takes 2 seconds, because the charging of the capacitor can be completed within 2 seconds generally, in the specific implementation, the delay time t of the delay normally-open contact L J1 of the closing circuit is taken between 3s and 5s, the first auxiliary contact QF1 is electrified after the closing coil HC and the bypass switch F are operated, the second auxiliary contact QF2 is automatically closed, the second auxiliary contact QF2 is electrified after the opening coil TC, the bypass switch F is automatically opened after the opening coil F is operated, the first auxiliary contact QF1 is automatically closed, the phenomenon that the closing coil HC and the opening coil TC are damaged due to long-time electrification is avoided, the first auxiliary contact 1 and the second auxiliary contact 2 are burnt, the first auxiliary contact is automatically closed, the second auxiliary contact 2 is automatically opened after the opening and closing coil TC is automatically opened, the first auxiliary contact is automatically opened when the first auxiliary contact 6329 and the second auxiliary contact 596 are automatically opened, and the second auxiliary contact 596 is automatically opened after the opening and the first auxiliary contact 638 is automatically opened, when the first auxiliary contact is automatically opened and the second auxiliary contact 596 is automatically opened, and the second auxiliary contact is prepared for the next closing coil TC 638 when the first auxiliary contact is automatically opened and the second auxiliary contact when the auxiliary contact is automatically opened.
The invention also provides a method for reducing electric energy loss by additionally arranging a bypass switch of a current-limiting reactor, the flow diagram of the method is shown in figure 4, and the method is combined with the schematic circuit structure diagram of additionally arranging the bypass switch of the current-limiting reactor shown in figure 2, and the steps are as follows:
s1, connecting the end b of a bypass switch F with the end a of a current-limiting reactor 1, and connecting the end d of the bypass switch F with the end c of the current-limiting reactor 1;
s2, connecting a current relay L J in the measurement and control unit 3 with a A, B-phase secondary winding 22 of the current transformer 2;
s3, judging whether the capacitor C is put into operation, if so, executing a step S4, otherwise, not operating the current relay L J, opening the brake of the bypass switch F, and connecting the current-limiting reactor 1 into the circuit;
and S4, judging whether the system current is stable, if so, actuating a current relay L J, switching on a bypass switch F, and withdrawing the current limiting reactor 1 from the circuit, otherwise, not actuating a current relay L J.
After the current relay L J of the measurement and control unit 3 is connected with the secondary winding of the current transformer 2, the measurement and control unit 3 can monitor the current flowing through the current relay L J, so as to monitor the current of the system where the primary winding 21 of the current transformer 2, namely the capacitor C, is located, judge whether the capacitor C is in operation or not by judging whether the amplitude of the current flowing through the current relay L J is zero or not, and judge whether the system current is stable or not by monitoring whether the current flowing through the current relay L J is a rated current or not.
The same or similar reference numerals correspond to the same or similar parts;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A system for reducing electric energy loss by additionally arranging a current-limiting reactor bypass switch is characterized by comprising a capacitor C, a current-limiting reactor, a current transformer, a breaker D L for controlling switching of the capacitor C, a bypass switch F and a measurement and control unit, wherein a primary winding of the current transformer is connected with one end of a breaker D L, the other end of the breaker D L is respectively connected with an end a of the current-limiting reactor and an end b of the bypass switch F, the end C of the current-limiting reactor and the end D of the bypass switch F are connected with the capacitor C, the measurement and control unit is provided with a current relay L J, the current relay L J is connected with a secondary winding of the current transformer, and the measurement and control unit controls opening and closing of the bypass switch F through the action state of a current relay L J;
the measuring and controlling unit monitors, controls, measures and adjusts the working condition of a primary loop where the capacitor C is located, the measuring and controlling unit comprises an alternating current loop unit and a direct current loop unit, the alternating current loop unit is formed by connecting a current relay L J and a secondary winding of a current transformer in series, the direct current loop unit comprises a closing loop and a separating loop, the closing loop is connected with the separating loop in parallel, the current relay L J controls the closing loop to be connected, so that the closing of the bypass switch F is controlled, and the current relay L J controls the separating loop to be disconnected, so that the separating loop of the bypass switch F is controlled;
the switching-on loop comprises a time-delay normally-open contact L J1, a first auxiliary contact QF1 and a switching-on coil HC, wherein the time-delay normally-open contact L J1, the first auxiliary contact QF1 and the switching-on coil HC are sequentially connected in series, the switching-off loop comprises a normally-closed contact L J2, a second auxiliary contact QF2 and a switching-off coil TC, the normally-closed contact L J2, the second auxiliary contact QF2 and the switching-off coil TC are sequentially connected in series, when the capacitor C is not put into operation, the current amplitude value of the current flowing through the current relay L J is zero monitored by a measurement and control unit, after the capacitor C is put into operation and the system current is stable, the current relay L J acts, the time-delay normally-open contact L J1 of the switching-on loop is switched on after t seconds, the first auxiliary contact QF1 is closed, the switching-on coil HC acts, the.
2. The system for reducing the electric energy loss by additionally arranging the current-limiting reactor bypass switch is characterized in that when the breaker D L is opened and the capacitor C is not in operation, the current relay L J of the measurement and control unit does not act, the normally closed contact L J2 of the opening circuit is connected, the second auxiliary contact QF2 is closed, the opening coil TC is electrified to act, the bypass switch F is opened, and the current-limiting reactor is connected into the system.
3. The system for reducing the electric energy loss by additionally arranging the current-limiting reactor bypass switch according to claim 1, wherein the standard of the system current stabilization is that a measurement and control unit monitors that the current flowing through a current relay L J is rated current after a capacitor C is put into operation for t1 secondsI。
4. The system for reducing the electric energy loss by additionally arranging the current-limiting reactor bypass switch according to claim 3, wherein the delay time t of the delayed normally-open contact L J1 of the closing loop is greater than t 1.
5. The system for reducing the electric energy loss by additionally arranging the current-limiting reactor bypass switch is characterized in that the first auxiliary contact QF1 is automatically opened after a closing coil HC is electrified and a bypass switch F is operated, and the second auxiliary contact QF2 is automatically closed; the second auxiliary contact QF2 is automatically turned off after the opening coil TC is electrified and the bypass switch F is operated, and the first auxiliary contact QF1 is automatically turned on.
6. A method for reducing electric energy loss by additionally installing a current-limiting reactor bypass switch, wherein the method is implemented based on the system of any one of claims 1 to 5, and the method at least comprises the following steps:
s1, connecting the end b of a bypass switch F with the end a of a current-limiting reactor, and connecting the end d of the bypass switch F with the end c of the current-limiting reactor;
s2, connecting a current relay L J in the measurement and control unit with a secondary winding of a current transformer;
s3, judging whether the capacitor C is put into operation, if so, executing a step S4, otherwise, not operating the current relay L J, opening the brake of the bypass switch F, and connecting the current-limiting reactor into the circuit;
and S4, judging whether the system current is stable, if so, actuating a current relay L J, closing a bypass switch F, and withdrawing the current-limiting reactor from the circuit, otherwise, not actuating a current relay L J.
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| CN202010250075.0A CN111130081B (en) | 2020-04-01 | 2020-04-01 | System and method for reducing electric energy loss by additionally arranging current-limiting reactor bypass switch |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU838891A1 (en) * | 1979-09-17 | 1981-06-15 | German Leonid A | Device for multisted capacitive compensation |
| CN201199632Y (en) * | 2008-05-07 | 2009-02-25 | 桂林电力电容器有限责任公司 | Parallel capacitor apparatus with dual over-voltage protection |
| CN102420431A (en) * | 2011-11-28 | 2012-04-18 | 吉林市龙华电力技术有限公司 | Low-voltage phase control switch for mechanically switching capacitor |
| CN203406595U (en) * | 2013-09-13 | 2014-01-22 | 广东光达电气有限公司 | Safety detection device |
| CN204144951U (en) * | 2014-05-07 | 2015-02-04 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of Combined electric capacity fling-cut switch |
| CN106817052A (en) * | 2017-03-31 | 2017-06-09 | 科博达技术有限公司 | The integration module and its vehicle starting system of starter current limiter and breaker |
| CN108133862A (en) * | 2018-01-19 | 2018-06-08 | 西安交通大学 | A kind of series compensation type current-limiting apparatus and method for interlocking vacuum switch and application |
| CN209472379U (en) * | 2019-02-21 | 2019-10-08 | 沈阳益峰电器有限责任公司 | Inhibit the capacitor fling-cut switch to shove |
| CN110783932A (en) * | 2019-12-02 | 2020-02-11 | 广东电网有限责任公司 | Hybrid circuit breaker topology system for switching alternating current capacitive load |
-
2020
- 2020-04-01 CN CN202010250075.0A patent/CN111130081B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU838891A1 (en) * | 1979-09-17 | 1981-06-15 | German Leonid A | Device for multisted capacitive compensation |
| CN201199632Y (en) * | 2008-05-07 | 2009-02-25 | 桂林电力电容器有限责任公司 | Parallel capacitor apparatus with dual over-voltage protection |
| CN102420431A (en) * | 2011-11-28 | 2012-04-18 | 吉林市龙华电力技术有限公司 | Low-voltage phase control switch for mechanically switching capacitor |
| CN203406595U (en) * | 2013-09-13 | 2014-01-22 | 广东光达电气有限公司 | Safety detection device |
| CN204144951U (en) * | 2014-05-07 | 2015-02-04 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of Combined electric capacity fling-cut switch |
| CN106817052A (en) * | 2017-03-31 | 2017-06-09 | 科博达技术有限公司 | The integration module and its vehicle starting system of starter current limiter and breaker |
| CN108133862A (en) * | 2018-01-19 | 2018-06-08 | 西安交通大学 | A kind of series compensation type current-limiting apparatus and method for interlocking vacuum switch and application |
| CN209472379U (en) * | 2019-02-21 | 2019-10-08 | 沈阳益峰电器有限责任公司 | Inhibit the capacitor fling-cut switch to shove |
| CN110783932A (en) * | 2019-12-02 | 2020-02-11 | 广东电网有限责任公司 | Hybrid circuit breaker topology system for switching alternating current capacitive load |
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