CN214314552U - A multifunctional multi-port hybrid DC circuit breaker - Google Patents
A multifunctional multi-port hybrid DC circuit breaker Download PDFInfo
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Abstract
本实用新型提供的一种多功能多端口混合式直流断路器，该断路器包括：潮流控制模块、多个通流模块、限流模块、耗能模块、开断模块及多个选择模块，其中，潮流控制模块的一端与直流母线接线端口连接，另一端与各通流模块的一端连接，各通流模块的另一端与每条直流线路接线端口连接，直流母线接线端口与直流线路接线端口一一对应设置；各选择模块的一端与其对应的直流线路连接，另一端与限流模块的一端连接；限流模块的另一端分别与耗能模块的一端及开断模块的一端连接；耗能模块的另一端及开断模块的另一端与直流母线连接。通过实施本实用新型，使得直流断路器设备投资大幅减少，且具备潮流控制能力，有利于推动多端及直流电网的发挥。
The utility model provides a multifunctional multi-port hybrid DC circuit breaker, the circuit breaker comprises: a power flow control module, a plurality of current flow modules, a current limiting module, an energy consumption module, a breaking module and a plurality of selection modules, wherein , one end of the power flow control module is connected to the DC bus connection port, the other end is connected to one end of each current flow module, the other end of each current flow module is connected to each DC line connection port, and the DC bus connection port is connected to the DC line connection port. One end of each selection module is connected to its corresponding DC line, and the other end is connected to one end of the current limiting module; the other end of the current limiting module is respectively connected to one end of the energy consumption module and one end of the breaking module; the energy consumption module The other end of the switch and the other end of the breaking module are connected to the DC bus. By implementing the utility model, the investment of the DC circuit breaker equipment is greatly reduced, and the power flow control capability is provided, which is beneficial to promote the multi-terminal and DC power grids.
Description
Technical Field
The utility model relates to a power electronics technical field, concretely relates to multi-functional multiport hybrid direct current breaker.
Background
The high-voltage direct-current circuit breaker is one of core devices for constructing a multi-terminal direct-current power grid, and the technical economy of the high-voltage direct-current circuit breaker directly influences the flexibility and the universality of the application of the direct-current power grid. With the large-scale development of renewable energy sources such as wind, light and the like, the transmission capacity and the application scale of a direct current power grid are continuously increased, grid structures are increasingly complex, and the large-scale application puts higher requirements on the technical economy of the high-voltage direct current circuit breaker.
At present, the high-voltage direct-current circuit breaker mainly has two technical routes of a hybrid type and a mechanical type. The mechanical scheme has the bottleneck problems of long on-off time of low current, difficulty in rapid reclosing and the like, the improvement of the on-off performance of the scheme is limited, and the cost is obviously improved along with the increase of the reclosing times. Therefore, compared to a mechanical dc circuit breaker, the hybrid scheme is more widely applied in engineering, however, the current hybrid dc circuit breaker usually adopts a large number of fully-controlled power electronic devices, which will cause further increase of the devices and result in a large increase of the cost along with the increase of the demand for breaking current.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that hybrid direct current circuit breaker is with high costs among the prior art to a multi-functional multiport hybrid direct current circuit breaker is provided.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the embodiment of the utility model provides a multi-functional multiport hybrid direct current circuit breaker, include: the power supply comprises a tidal current control module, a plurality of through-flow modules, a current limiting module, an energy consumption module, a switching-on/off module and a plurality of selection modules, wherein one end of the tidal current control module is connected with a direct current bus wiring port, the other end of the tidal current control module is connected with one end of each through-flow module, the other end of each through-flow module is connected with each direct current line wiring port, and the direct current bus wiring ports and the direct current line wiring ports are arranged in a one-to-one correspondence manner; one end of each selection module is connected with the corresponding direct current line, and the other end of each selection module is connected with one end of the current limiting module; the other end of the current limiting module is respectively connected with one end of the energy consumption module and one end of the cut-off module; the other end of the energy consumption module and the other end of the cut-off module are connected with the direct current bus.
Optionally, the power flow control module comprises: the power electronic switch unit is arranged in one-to-one correspondence with each direct current line, and the capacitor is arranged between every two adjacent direct current lines, wherein two ends of each capacitor are respectively connected with the two adjacent direct current lines; the power electronic switch unit comprises a power electronic switch device and a pre-charging capacitor.
Optionally, the current module comprises at least one mechanical switch.
Optionally, the selection module comprises: a mechanical switch and at least one bidirectional power electronic switching unit, wherein the mechanical switch is connected in series with each of the bidirectional power electronic switching units.
Optionally, the selection module comprises: a plurality of series connected bidirectional power electronic switching units and a non-linear resistor connected in parallel with the plurality of series connected bidirectional power electronic switching units.
Optionally, the current limiting module is a resistive current limiting module, a capacitive current limiting module, or an inductive current limiting module.
Optionally, the energy consuming module is a lightning arrester.
Optionally, the disconnect module comprises at least one bidirectional power electronic switching unit.
The utility model discloses technical scheme has following advantage:
the utility model provides a multi-functional multiport hybrid direct current circuit breaker, include: the power supply comprises a tidal current control module, a plurality of through-flow modules, a current limiting module, an energy consumption module, a disconnection module and a plurality of selection modules, wherein one end of the tidal current control module is connected with a direct current bus wiring port, the other end of the tidal current control module is connected with one end of each through-flow module, the other end of each through-flow module is connected with each direct current line wiring port, and the direct current bus wiring ports and the direct current line wiring ports are arranged in a one-to-one correspondence manner; one end of each selection module is connected with the corresponding direct current line, and the other end of each selection module is connected with one end of the current limiting module; the other end of the current limiting module is respectively connected with one end of the energy consumption module and one end of the cut-off module; the other end of the energy consumption module and the other end of the cut-off module are connected with the direct current bus. The multifunctional multi-port hybrid direct current breaker can be applied to a multi-port structure, has the power flow control, short circuit current limiting and breaking capabilities of a plurality of direct current lines, reduces the overall volume and cost of the direct current breaker, has good technical and economic performances, and can meet the large-scale application requirements of the high-voltage direct current breaker. Furthermore, the equipment investment of the direct current circuit breaker is greatly reduced by sharing the current conversion branch, and the construction of a multi-terminal direct current power grid is facilitated.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 structural diagram of a specific example of a multifunctional multiport hybrid dc circuit breaker according to an embodiment of the present invention;
fig. 2 is a topological structure diagram of a specific example of the tidal control module in an embodiment of the present invention;
fig. 3 is a topology diagram of a specific example of a power electronic switch unit according to an embodiment of the present invention;
fig. 4 is a topology diagram of another specific example of the power electronic switch unit in the embodiment of the present invention;
fig. 5 is a topology diagram of another specific example of the power electronic switch unit in the embodiment of the present invention;
fig. 6 is a topological structure diagram of a specific example of a selection module in an embodiment of the present invention;
fig. 7 is a topological structure diagram of another specific example of a selection module in an embodiment of the present invention;
fig. 8 is a topological structure diagram of another specific example of a selection module in an embodiment of the present invention;
fig. 9 is a topology diagram of a specific example of a resistive current limiting module according to an embodiment of the present invention;
fig. 10 is a topological structure diagram of a specific example of a capacitive current limiting module according to an embodiment of the present invention;
fig. 11 is a topological structure diagram of a specific example of an inductive current limiting module in an embodiment of the present invention;
fig. 12 is a block diagram of another specific example of the multi-functional multi-port hybrid dc circuit breaker according to the embodiment of the present invention;
fig. 13 is a flowchart of a specific example of a control method for a multi-functional multi-port hybrid dc circuit breaker according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
An embodiment of the utility model provides a multi-functional multiport hybrid direct current circuit breaker is applied to multi-end and gentle direct current electric wire netting. As shown in fig. 1, the multifunctional multi-port hybrid dc circuit breaker includes: the power supply comprises a tidal current control module, a plurality of through-flow modules, a current limiting module, an energy consumption module, a disconnection module and a plurality of selection modules, wherein one end of the tidal current control module is connected with a direct current bus wiring port, the other end of the tidal current control module is connected with one end of each through-flow module, the other end of each through-flow module is connected with each direct current line wiring port, and the direct current bus wiring ports and the direct current line wiring ports are arranged in a one-to-one correspondence manner; one end of each selection module is connected with the corresponding direct current line, and the other end of each selection module is connected with one end of the current limiting module; the other end of the current limiting module is respectively connected with one end of the energy consumption module and one end of the cut-off module; the other end of the energy consumption module and the other end of the cut-off module are connected with the direct current bus.
In a specific embodiment, the multifunctional multi-port hybrid dc circuit breaker is installed in a dc power grid, and is configured to implement conduction of a steady-state current of a dc line when the dc line normally operates, and transfer a fault current to a commutation branch after a fault occurring in the dc line is detected, thereby implementing a fault blocking function. In an embodiment of the present invention, the dc bus connection port and the dc line connection port are not shown in fig. 1.
The utility model provides a multi-functional multiport hybrid direct current circuit breaker, include: the power supply comprises a tidal current control module, a plurality of through-flow modules, a current limiting module, an energy consumption module, a disconnection module and a plurality of selection modules, wherein one end of the tidal current control module is connected with a direct current bus wiring port, the other end of the tidal current control module is connected with one end of each through-flow module, the other end of each through-flow module is connected with each direct current line wiring port, and the direct current bus wiring ports and the direct current line wiring ports are arranged in a one-to-one correspondence manner; one end of each selection module is connected with the corresponding direct current line, and the other end of each selection module is connected with one end of the current limiting module; the other end of the current limiting module is respectively connected with one end of the energy consumption module and one end of the cut-off module; the other end of the energy consumption module and the other end of the cut-off module are connected with the direct current bus. The multifunctional multi-port hybrid direct current breaker can be applied to a multi-port structure, has the power flow control, short circuit current limiting and breaking capabilities of a plurality of direct current lines, reduces the overall volume and cost of the direct current breaker, has good technical and economic performances, and can meet the large-scale application requirements of the high-voltage direct current breaker. Furthermore, the equipment investment of the direct current circuit breaker is greatly reduced by sharing the current conversion branch, and the construction of a multi-terminal direct current power grid is facilitated.
In one embodiment, as shown in fig. 2, the power flow control module includes: the power electronic switch unit is arranged in one-to-one correspondence with each direct current line, and the capacitor is arranged between every two adjacent direct current lines, wherein two ends of each capacitor are respectively connected with the two adjacent direct current lines; the power electronic switch unit comprises a power electronic switch device and a pre-charging capacitor.
In an embodiment, the current control module is to implement current control of each line in a steady state of the system and current transfer of a fault line after a system fault. After the power electronic switch unit is locked, the pre-charging capacitors in the power electronic switch unit are switched in, a voltage difference is formed between the direct current lines, the power flow is adjusted, and the balance of capacitor voltages switched in the adjacent direct current lines is realized through the capacitors arranged between every two adjacent direct current lines. In the embodiment of the present invention, the power electronic switch unit has a plurality of configurations, including a reverse series connection form of the full control device as shown in fig. 3, wherein the pre-charging capacitor with the energy storage function is connected in parallel to two ends of the reverse series connection device; the full-bridge module type comprises a full-bridge module formed by full-control devices as shown in fig. 4, wherein a pre-charging capacitor with an energy storage function is connected in parallel between bridge arms; including a full bridge modular form of diodes as shown in fig. 5, in which a pre-charge capacitor is connected in parallel between the bridge arms. In an embodiment of the present invention, the power electronic switching device includes: IGBT, diode, etc., are merely exemplified, and are not limited thereto. By configuring the pre-charging capacitor with the energy storage function and the polar capacitor, the power flow transfer between the direct current lines can be flexibly realized, and the flexibility of a direct current power grid can be remarkably improved.
In an embodiment, the through-current module comprises at least one mechanical switch.
In one embodiment, the current-carrying module is composed of at least one fast mechanical switch, and is mainly used for conducting rated current during steady-state operation of the system and withstanding transient voltage during the opening and closing process of the direct-current circuit breaker after system fault. Only a mechanical switch is arranged in the through-flow module, so that the running loss is approximately zero, a water cooling system is not needed, and the reliability of the circuit breaker is improved.
In one embodiment, as shown in fig. 6, the selection module comprises: a mechanical switch and at least one bidirectional power electronic switching unit, wherein the mechanical switch is connected in series with each bidirectional power electronic switching unit.
In one embodiment, the selection module is a fast switching unit with bidirectional conduction and blocking capability, and is mainly used for selectively realizing short-circuit current of a fault line and transient on-off voltage isolation of a non-fault line. Optionally, as shown in fig. 7, the selecting module may further include: a plurality of series connected bidirectional power electronic switching units and a non-linear resistor connected in parallel with the plurality of series connected bidirectional power electronic switching units. Alternatively, as shown in fig. 8, the selection module may also be in the form of an anti-parallel connection of a diode valve and a thyristor valve. By configuring the topological design of various selection modules, the optimal comprehensive performance matching can be realized according to different grid structures and operation requirements of the direct current power grid system, and the overall technical economy of the equipment is improved.
In one embodiment, the current limiting module is a resistive current limiting module, a capacitive current limiting module, or an inductive current limiting module.
In a specific embodiment, the current limiting module is mainly used for limiting the fault current, and may be a resistive current limiting module, a capacitive current limiting module formed by a nonlinear capacitor, or an inductive current limiting module of a thyristor-switched reactor. In an embodiment of the present invention, the resistive current limiting module is shown in fig. 9 and includes a variable resistor R1. As shown in fig. 10, the capacitive current limiting module includes a first resistor R2 and an adjustable capacitor C1, wherein the first resistor R2 is connected in parallel with the adjustable capacitor C1. As shown in fig. 11, the inductive current limiting module includes a first capacitor C2, a first thyristor T1, a second thyristor T2, a third thyristor T3 and a first inductor L, wherein one end of the first capacitor C2 is connected to an anode of the first thyristor T1, the other end is connected to an anode of the second thyristor T2 and a cathode of the third thyristor T3, a cathode of the first thyristor T1 is connected to one end of the first inductor L, and the other end of the first inductor L is connected to a cathode of the second thyristor T2 and an anode of the third thyristor T3. Through setting up current limiting module, can effectively restrict short-circuit current at the electric current breaking process, reduce the breaking current requirement of breaking the module to be favorable to reducing the device number of concatenating, still realized breaking module full control device multiple circuit sharing simultaneously, reduced direct current circuit breaker primary cost and volume from two aspects by a wide margin.
In one embodiment, the energy consuming module is a lightning arrester.
In one embodiment, the energy dissipation unit is a series connection of nonlinear resistive sheets for absorbing electromagnetic energy of inductive elements of the system and clearing short-circuit current.
In an embodiment, the disconnection module comprises at least one bidirectional power electronic switching unit.
In a specific embodiment, the switching module is a high-speed bidirectional power electronic switch unit for realizing the switching of short-circuit current, and its typical structure is full-control device reverse series connection or bridge type module.
The embodiment of the utility model provides a still provide a multi-functional multiport hybrid direct current breaker control method, be applied to above-mentioned multi-functional multiport hybrid direct current breaker control method, above-mentioned control method includes: and when a line power flow instruction is received, locking each power electronic switch unit in the power electronic switch unit control module to regulate the line power flow.
In an embodiment, the control method is specifically described by taking the current injection type dc circuit breaker shown in fig. 12 as an example, first, in steady state operation, the breaking module is in a locked state, each selection module is in a blocking state, and current flows through the mechanical switch K1, the mechanical switch K2, the power electronic switch unit 1 and the power electronic switch unit 2 on the dc line. When the line power flow needs to be adjusted, the power electronic switch units of two adjacent direct current lines are locked, the pre-charging capacitors in the power electronic switch units are put into use, the line power flow is changed, and meanwhile, the voltage balance of the capacitors put into the two lines can be achieved through the capacitors between the polar lines.
In an embodiment, as shown in fig. 13, the control method further includes the steps of:
step S1: when a current direct-current line fault breaking instruction is received, the power flow control module power electronic switch unit in the current direct-current line is locked, and the breaking module and the selection module connected with the current direct-current line are simultaneously conducted, so that the fault current of the current direct-current line flows into the current conversion branch.
Step S2: and after the current transfer is finished, the through-current module in the direct-current line and the selection module connected with other lines are disconnected.
Step S3: when the fault current is reduced to the range of the switching-on and switching-off capacity of the switching-on and switching-off unit under the action of the current limiting module, the switching-on and switching-off unit is locked, and the current is transferred to the energy consumption module to be cleared.
In a specific embodiment, when the breaker monitors that the dc line 1 has a fault, the power electronic switch unit 1 connected to the faulty dc line 1 is locked, and at the same time, the IGBT in the disconnection module is triggered to conduct, and the selection module 1 is conducted, so as to transfer the current on the faulty dc line 1 to the commutation branch. In the current transfer process, the current limiting module capacitor has a high capacitance value, and rapid current conversion is guaranteed. After the commutation is completed, the mechanical switch K1 is quickly opened, and simultaneously, when the capacitance value of the capacitor in the current limiting module changes along with the increase of the voltage and reaches a certain voltage threshold value, the capacitance value is quickly reduced to a small capacitance value, and the voltage is quickly established to limit the short-circuit current. When the fast mechanical switch K1 reaches the withstand transient voltage and the short-circuit current drops to the turn-off level of the turn-off module, the turn-off module is locked to transfer the current to the MOV of the energy dissipation module in a forced manner, so that the current is cleared and the turn-off is completed. Through the fault isolation operation, the bus fault is quickly isolated, the operation of a mesh structure of a direct current power grid can be maintained, and the utilization rate of each line is greatly improved.
When the breaker monitors that the direct current circuit 1 and the direct current circuit 2 simultaneously have faults, the power electronic switch unit 1 connected with the fault direct current circuit 1 and the power electronic switch unit 2 connected with the fault direct current circuit 2 are synchronously locked, the IGBT in the on-off module is triggered to be conducted, the selection module 1 and the selection module 2 are synchronously conducted, and current on the fault direct current circuit 1 and the fault direct current circuit 2 is transferred to the current conversion branch. In the current transfer process, the current limiting module capacitor has a high capacitance value, and rapid current conversion is guaranteed. After the commutation is completed, the mechanical switch K1 in the current-passing module 1 and the mechanical switch K2 in the current-passing module 2 are quickly switched off, and meanwhile, when the capacitance value of the capacitor in the current-limiting module changes along with the increase of the voltage and reaches a certain voltage threshold value, the capacitance value is quickly reduced to a small capacitance value, and the voltage is quickly established to limit the short-circuit current. When the fast mechanical switch K1 and the mechanical switch K2 reach the withstand transient voltage and the short-circuit current drops to the turn-off level of the turn-off module, the turn-off module is locked to transfer the current to the MOV, so as to realize current removal.
After the direct current line 1 has a fault, monitoring the current rise rate and the current amplitude of the direct current line 1 in real time, when the current rise rate and the current amplitude of the direct current line 1 are recovered to be normal, namely after the fault of the direct current line 1 is cleared, firstly locking the IGBT in the switching-off module, controlling a current conversion branch connected with the current direct current line to stop working, closing a mechanical switch K1, and controlling a through-current module in the direct current line to be switched on the current direct current line. If the fault still exists, the IGBT in the disconnection module is closed again, the commutation branch circuit connected with the current direct-current line is controlled to be started to work, and therefore the fault current of the current direct-current line flows into the energy consumption module in the commutation branch circuit to remove the fault current.
The utility model provides a multi-functional multiport hybrid direct current breaker control method, through dispose multi-functional multiport hybrid direct current breaker control method in multiport direct current system, utilize current injection formula direct current breaker can realize many direct current circuit trend control simultaneously, short-circuit current restriction and cut-off, direct current breaker whole volume and cost have been reduced, can satisfy high voltage direct current breaker scale application demand, the equipment investment of direct current breaker has been reduced simultaneously by a wide margin, be favorable to the construction of multiterminal and direct current electric wire netting.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. 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. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (8)
1. A multi-functional, multi-port hybrid dc circuit breaker, comprising: a tide control module, a plurality of through-flow modules, a current limiting module, an energy consumption module, a cut-off module and a plurality of selection modules, wherein,
one end of each current control module is connected with a direct current bus wiring port, the other end of each current control module is connected with one end of each through-flow module, the other end of each through-flow module is connected with each direct current line wiring port, and the direct current bus wiring ports are arranged in one-to-one correspondence with the direct current line wiring ports;
one end of each selection module is connected with the corresponding direct current line, and the other end of each selection module is connected with one end of the current limiting module; the other end of the current limiting module is respectively connected with one end of the energy consumption module and one end of the cut-off module; the other end of the energy consumption module and the other end of the cut-off module are connected with the direct current bus.
2. The multi-functional, multi-port hybrid dc circuit breaker of claim 1, wherein the current control module comprises: power electronic switch units arranged in one-to-one correspondence with the DC lines, and capacitors arranged between every two adjacent DC lines, wherein,
two ends of each capacitor are respectively connected with two adjacent direct current lines;
the power electronic switch unit comprises a power electronic switch device and a pre-charging capacitor.
3. The multi-functional, multi-port hybrid direct current circuit breaker according to claim 1, characterized in that the through-current module comprises at least one mechanical switch.
4. The multi-functional multi-port hybrid direct current circuit breaker of claim 1, wherein the selection module comprises: a mechanical switch and at least one bidirectional power electronic switching unit, wherein the mechanical switch is connected in series with each of the bidirectional power electronic switching units.
5. The multi-functional multi-port hybrid direct current circuit breaker of claim 1, wherein the selection module comprises: a plurality of series connected bidirectional power electronic switching units and a non-linear resistor connected in parallel with the plurality of series connected bidirectional power electronic switching units.
6. The multi-functional, multi-port hybrid dc circuit breaker of claim 1, wherein the current limiting module is a resistive current limiting module, a capacitive current limiting module, or an inductive current limiting module.
7. The multi-functional, multi-port hybrid dc circuit breaker of claim 1, wherein the energy consuming module is a lightning arrester.
8. The multi-functional, multi-port hybrid dc circuit breaker of claim 1, wherein the disconnect module comprises at least one bidirectional power electronic switch unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865046A (en) * | 2021-03-05 | 2021-05-28 | 全球能源互联网研究院有限公司 | Multifunctional multiport hybrid direct current breaker and control method |
| CN114709800A (en) * | 2022-04-28 | 2022-07-05 | 西安交通大学 | Compact direct-current circuit breaker sharing branch circuit and control method thereof |
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2021
- 2021-03-05 CN CN202120484703.1U patent/CN214314552U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865046A (en) * | 2021-03-05 | 2021-05-28 | 全球能源互联网研究院有限公司 | Multifunctional multiport hybrid direct current breaker and control method |
| WO2022183696A1 (en) * | 2021-03-05 | 2022-09-09 | 全球能源互联网研究院有限公司 | Multifunctional multi-port hybrid direct-current circuit breaker and control method |
| CN114709800A (en) * | 2022-04-28 | 2022-07-05 | 西安交通大学 | Compact direct-current circuit breaker sharing branch circuit and control method thereof |
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