CN113572144B - Overcurrent protection method and device, terminal equipment and computer readable storage medium - Google Patents
Overcurrent protection method and device, terminal equipment and computer readable storage medium Download PDFInfo
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- CN113572144B CN113572144B CN202110872277.3A CN202110872277A CN113572144B CN 113572144 B CN113572144 B CN 113572144B CN 202110872277 A CN202110872277 A CN 202110872277A CN 113572144 B CN113572144 B CN 113572144B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses an overcurrent protection method, an overcurrent protection device, terminal equipment and a computer readable storage medium, wherein the method comprises the following steps: determining the current anti-misoperation line type of the power system according to the adjacent line information of the power system; judging whether the current error-proof circuits under different types meet a remote error-proof condition or not, and acquiring circuit operation data of the power system when the current error-proof circuits meet the remote error-proof condition; and judging whether the line operation data meets a preset condition corresponding to the current error-preventing line type, and executing an overcurrent protection action when the line operation data meets the preset condition. The overcurrent protection method provided by the invention is based on different anti-error line types and operation data, so that the anti-error condition is more accurately judged, unnecessary overcurrent protection actions are avoided, and the stable operation of the power system is facilitated.
Description
Technical Field
The present invention relates to the field of overcurrent protection technologies, and in particular, to an overcurrent protection method and apparatus, a terminal device, and a computer-readable storage medium.
Background
In an electric power system, a line fault or trip can cause power flow transfer and overcurrent protection action of a certain line of a wire. At present, the universal error prevention condition is mutation error prevention, namely, as long as any interval in the middle of the same voltage class of a transformer substation meets a mutation threshold, the error prevention condition is opened, and the overcurrent protection action of a line is allowed. However, under special circumstances, the general anti-error strategy is easy to cause false opening of the anti-error condition, thereby affecting the normal operation of the power system. Therefore, how to provide an accurate and effective overcurrent protection method is one of the problems to be solved in the art.
Disclosure of Invention
The invention aims to provide an overcurrent protection method, an overcurrent protection device, terminal equipment and a computer readable storage medium, and aims to solve the problem that in the prior art, misjudgment is easy to make mistakes, unnecessary overcurrent protection actions are caused, and the normal operation of a power system is further influenced.
In order to achieve the above object, the present invention provides an overcurrent protection method, including:
determining the current anti-misoperation line type of the power system according to the adjacent line information of the power system;
judging whether the current error-proof circuits under different types meet a remote error-proof condition or not, and acquiring circuit operation data of the power system when the current error-proof circuits meet the remote error-proof condition;
and judging whether the line operation data meets a preset condition corresponding to the current error-preventing line type, and executing an overcurrent protection action when the line operation data meets the preset condition.
Further, judge the present of different grade types and prevent that the mistake circuit satisfies the distant place and prevent mistake condition, include:
if the current anti-error line type is a single-line anti-error type, when the working condition of any one of the adjacent lines is an operating state and the output power value is less than the operation power, the remote anti-error condition is met;
and if the current anti-error line type is a double-line anti-error type, when the working conditions of two adjacent lines are running states and the output power value is less than the operation power, the remote anti-error condition is met.
Further, when the line operating data meets the preset condition, an overcurrent protection action is executed, including:
and when the output power of the current anti-misoperation line flows into the bus in the direction, the current amplitude value reaches the current fixed value, and the active power reaches the power fixed value, executing an overcurrent protection action.
Further, before the determining the current error-preventing line type of the power system according to the adjacent line information of the power system, the method further includes:
judging whether the current anti-misoperation line meets a starting condition or not, and acquiring adjacent line information of the power system when the current anti-misoperation line meets the starting condition; wherein the content of the first and second substances,
the starting condition is a fault trip of an adjacent line of the power system.
The present invention also provides an overcurrent protection apparatus, comprising:
the circuit type determining unit is used for determining the current anti-misoperation circuit type of the power system according to the adjacent circuit information of the power system;
the anti-misoperation judging unit is used for judging whether the current anti-misoperation circuits under different types meet a remote anti-misoperation condition or not, and acquiring the circuit operation data of the power system when the current anti-misoperation circuits meet the remote anti-misoperation condition;
and the overcurrent protection unit is used for judging whether the line operation data meets a preset condition corresponding to the current error-preventing line type, and executing overcurrent protection action when the line operation data meets the preset condition.
Further, the misjudgment prevention unit is further configured to:
if the current anti-error line type is a single-wire anti-error type, when the working condition of any one of adjacent lines is in an operating state and the output power value is less than the commissioning power, the remote anti-error condition is met;
and if the current anti-error line type is a double-line anti-error type, when the working conditions of two adjacent lines are running states and the output power value is less than the operation power, the remote anti-error condition is met.
Further, the overcurrent protection unit is further configured to:
and when the output power of the current anti-misoperation line flows into the bus in the direction, the current amplitude reaches the current fixed value, and the active power reaches the power fixed value, executing an overcurrent protection action.
Further, the overcurrent protection device further includes a start judgment unit configured to:
judging whether the current anti-misoperation line meets a starting condition or not, and acquiring adjacent line information of the power system when the current anti-misoperation line meets the starting condition; wherein the starting condition is fault tripping of adjacent lines of the power system.
The present invention also provides a terminal device, including:
one or more processors;
a memory coupled to the processor for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the over-current protection method as described in any one of the above.
The present invention also provides a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method of overcurrent protection as set forth in any one of the above.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses an overcurrent protection method, which comprises the following steps: determining the current anti-misoperation line type of the power system according to the adjacent line information of the power system; judging whether the current error-proof circuits under different types meet a remote error-proof condition or not, and acquiring circuit operation data of the power system when the current error-proof circuits meet the remote error-proof condition; and judging whether the line operation data meets a preset condition corresponding to the current error-preventing line type, and executing an overcurrent protection action when the line operation data meets the preset condition. The overcurrent protection method provided by the invention is based on different anti-error line types and operation data, so that the anti-error condition is more accurately judged, unnecessary overcurrent protection actions are avoided, and the stable operation of the power system is facilitated.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an overcurrent protection method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an overcurrent protection method according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of an overcurrent protection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the invention provides an overcurrent protection method, including the following steps:
and S10, determining the current anti-misoperation line type of the power system according to the adjacent line information of the power system.
In this embodiment, the preferred power grid line is a 500kV power transmission line, and the 500kV power transmission line protection rack is suitable for a "hand-in-hand" or ring network connection manner. It should be noted that, in practical applications, other voltage value output lines may be selected according to needs, and are not limited herein.
In an optional embodiment, before performing step S10, the method further includes determining whether the line overcurrent protection reaches a start-up condition. Wherein, the basis of the judgment is as follows: when the adjacent line of the power system testifies fault tripping, the overcurrent protection of the line reaches the starting condition.
Further, when step S10 is executed, the adjacent line information is mainly obtained first, and then the wrong-line-type-prevention is determined according to the adjacent line information. It should be noted that, in this embodiment, the line information of the adjacent substation has an information exchange function, that is, the real-time active power and the line operating condition (outage or operation) of the adjacent line can be collected in real time.
S20, judging whether the current error preventing circuits in different types meet remote error preventing conditions or not, and acquiring circuit operation data of the power system when the current error preventing circuits meet the remote error preventing conditions;
specifically, the error-preventing line type includes a single-wire error-preventing type and a two-wire error-preventing type. Since the error prevention conditions of different lines are different, the present embodiment needs to determine whether it satisfies the remote error prevention condition for different types of error prevention lines.
In a specific embodiment, the determining whether the current error-prevention line under the different types meets the remote error-prevention condition includes:
if the current anti-error line type is a single-wire anti-error type, when the working condition of any one of adjacent lines is in an operating state and the output power value is less than the commissioning power, the remote anti-error condition is met;
and if the current anti-error line type is a double-line anti-error type, when the working conditions of two adjacent lines are running states and the output power value is less than the operation power, the remote anti-error condition is met.
And S30, judging whether the line operation data meet the preset conditions corresponding to the current error-preventing line type, and executing an overcurrent protection action when the line operation data meet the preset conditions.
In the step, operation data under different error-preventing line types are obtained, and whether overcurrent protection action is executed or not is determined according to whether the operation data meet preset conditions or not. The operation data mainly comprises the direction of output power, current amplitude and active power.
In a specific embodiment, when the line operating data meets the preset condition, an overcurrent protection action is performed, including:
and when the output power of the current anti-misoperation line flows into the bus in the direction, the current amplitude value reaches the current fixed value, and the active power reaches the power fixed value, executing an overcurrent protection action.
As shown in fig. 2, fig. 2 provides a process for determining whether to execute an overcurrent protection action under different types of error-proof lines:
specifically, if the error-proof line type is the single-wire error-proof type, whether the working condition of any one of the adjacent lines is in an operating state is judged; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the output power value of any one of the adjacent lines is smaller than the operation power; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the direction of the output power flows into the bus; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the current amplitude reaches a current fixed value; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the active power reaches a power fixed value; if not, the overcurrent protection action is not executed; and if so, executing the overcurrent protection action.
Similarly, if the error-proof line type is a double-line error-proof type, judging whether the working conditions of two adjacent lines are both in an operating state; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the output power values of the two adjacent lines are smaller than the operation power; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the direction of the output power flows into the bus; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the current amplitude reaches a current fixed value; if not, the overcurrent protection action is not executed; if yes, continuously judging whether the active power reaches a power fixed value; if not, the overcurrent protection action is not executed; and if so, executing the overcurrent protection action.
It should be noted that the overcurrent protection action in this embodiment is to specifically cut off the line interval switch.
The overcurrent protection method provided by the embodiment of the invention is based on different anti-error line types and operation data, so that the anti-error condition is more accurately judged, unnecessary overcurrent protection actions are avoided, and the stable operation of the power system is facilitated.
Referring to fig. 3, an embodiment of the invention further provides an overcurrent protection apparatus, including:
the line type determining unit 01 is used for determining the current anti-misoperation line type of the power system according to the adjacent line information of the power system;
the anti-misoperation judging unit 02 is used for judging whether the current anti-misoperation circuits in different types meet remote anti-misoperation conditions or not, and acquiring the circuit operation data of the power system when the current anti-misoperation circuits meet the remote anti-misoperation conditions;
and the overcurrent protection unit 03 is configured to judge whether the line operation data meets a preset condition corresponding to the current error-prevention line type, and execute an overcurrent protection action when the line operation data meets the preset condition.
In an optional embodiment, the misjudgment prevention unit 02 is further configured to:
if the current anti-error line type is a single-wire anti-error type, when the working condition of any one of adjacent lines is in an operating state and the output power value is less than the commissioning power, the remote anti-error condition is met;
if the current anti-error line type is a double-line anti-error type, when the working conditions of two adjacent lines are running states and the output power value is smaller than the operation power, the remote anti-error condition is met.
In an optional embodiment, the overcurrent protection unit 03 is further configured to:
and when the output power of the current anti-misoperation line flows into the bus in the direction, the current amplitude value reaches the current fixed value, and the active power reaches the power fixed value, executing an overcurrent protection action.
In an optional embodiment, the over-current protection device further includes a start-up determining unit, configured to:
judging whether the current anti-misoperation line meets a starting condition or not, and acquiring adjacent line information of the power system when the current anti-misoperation line meets the starting condition; wherein the starting condition is fault tripping of adjacent lines of the power system.
The overcurrent protection device provided by the embodiment of the invention is used for executing the overcurrent protection method described in any one of the embodiments, and the embodiment is based on different error-preventing line types and operation data, so that the error-preventing condition is more accurately judged, unnecessary overcurrent protection actions are avoided, and stable operation of a power system is facilitated.
Referring to fig. 4, an embodiment of the present invention further provides a terminal device, including:
one or more processors;
a memory coupled to the processor for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the over-current protection method as described above.
The processor is used for controlling the overall operation of the terminal equipment so as to complete all or part of the steps of the overcurrent protection method. The memory is used to store various types of data to support operation at the terminal device, and these data may include, for example, instructions for any application or method operating on the terminal device, as well as application-related data. The Memory may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk.
In an exemplary embodiment, the terminal Device may be implemented by one or more Application Specific 1 integrated circuits (AS 1C), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is configured to perform the over-current protection method according to any one of the above embodiments, so AS to achieve the technical effects consistent with the above method.
In another exemplary embodiment, a computer readable storage medium is also provided, which comprises program instructions, which when executed by a processor implement the steps of the overcurrent protection method according to any one of the above embodiments. For example, the computer readable storage medium may be the above memory including program instructions, which are executable by a processor of the terminal device to implement the over-current protection method according to any one of the above embodiments, and achieve the technical effects consistent with the above method.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (6)
1. An overcurrent protection method, comprising:
determining the current anti-misoperation line type of the power system according to the adjacent line information of the power system;
judge and prevent mistake the circuit at present under the different grade type and whether satisfy the mistake condition is prevented in the distant place, include:
if the current anti-error line type is a single-wire anti-error type, when the working condition of any one of adjacent lines is in an operating state and the output power value is less than the commissioning power, the remote anti-error condition is met;
if the current anti-error line type is a double-line anti-error type, when the working conditions of two adjacent lines are both in an operating state and the output power value is less than the operation power, the remote anti-error condition is met;
when the current anti-misoperation line meets the remote anti-misoperation condition, acquiring line operation data of the power system;
judging whether the line operation data meet the preset condition corresponding to the current anti-misoperation line type, and executing an over-current protection action when the line operation data meet the preset condition, wherein the over-current protection action comprises the following steps:
and when the output power of the current anti-misoperation line flows into the bus in the direction, the current amplitude value reaches the current fixed value, and the active power reaches the power fixed value, executing an overcurrent protection action.
2. The overcurrent protection method according to claim 1, before the determining a current error-proof line type of the power system according to the adjacent line information of the power system, further comprising:
judging whether the current anti-misoperation line meets a starting condition or not, and acquiring adjacent line information of the power system when the current anti-misoperation line meets the starting condition; wherein the content of the first and second substances,
the starting condition is that adjacent lines of the power system are tripped due to faults.
3. An overcurrent protection device, comprising:
the circuit type determining unit is used for determining the current anti-misoperation circuit type of the power system according to the adjacent circuit information of the power system;
the anti-misoperation judging unit is used for judging whether the current anti-misoperation circuits under different types meet a remote anti-misoperation condition or not, and acquiring the circuit operation data of the power system when the current anti-misoperation circuits meet the remote anti-misoperation condition; and is further configured to: if the current anti-error line type is a single-wire anti-error type, when the working condition of any one of adjacent lines is in an operating state and the output power value is less than the commissioning power, the remote anti-error condition is met; if the current anti-error line type is a double-line anti-error type, when the working conditions of two adjacent lines are both in an operating state and the output power value is less than the operation power, the remote anti-error condition is met;
the overcurrent protection unit is used for judging whether the line operation data meet preset conditions corresponding to the current error-preventing line type or not, and executing overcurrent protection action when the line operation data meet the preset conditions; and the overcurrent protection circuit is also used for executing overcurrent protection action when the output power of the current anti-misoperation circuit flows into the bus in the direction, the current amplitude value reaches the current fixed value, and the active power reaches the power fixed value.
4. The overcurrent protection device of claim 3, further comprising a start-up determination unit configured to:
judging whether the current anti-misoperation line meets a starting condition or not, and acquiring adjacent line information of the power system when the current anti-misoperation line meets the starting condition; wherein the starting condition is fault tripping of adjacent lines of the power system.
5. A terminal device, comprising:
one or more processors;
a memory coupled to the processor for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the over-current protection method of any one of claims 1-2.
6. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of overcurrent protection according to any one of claims 1-2.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800121A (en) * | 2016-09-07 | 2018-03-13 | 南京南瑞继保电气有限公司 | A kind of Distributed power line protection method |
| CN110649581A (en) * | 2019-10-30 | 2020-01-03 | 中国南方电网有限责任公司 | Protection method for closed-loop power distribution network containing distributed power supply |
| CN112803598A (en) * | 2021-03-05 | 2021-05-14 | 中国电力科学研究院有限公司 | Multi-source cooperative protection configuration method, system, equipment and storage medium for power distribution network |
| CN112821360A (en) * | 2020-12-30 | 2021-05-18 | 中国电力科学研究院有限公司 | Safety and stability control method and system of electric power system based on flexible policy configuration |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6854065B2 (en) * | 2001-07-30 | 2005-02-08 | Hewlett-Packard Development Company, L.P. | Loadshedding uninterruptible power supply |
| US7307396B2 (en) * | 2004-12-13 | 2007-12-11 | Caterpillar Inc. | Overload protection system for an electrical device |
| DE112014001200T5 (en) * | 2013-03-08 | 2016-01-21 | Abb Research Ltd. | Overcurrent protection device and method |
| CN108984938A (en) * | 2018-07-27 | 2018-12-11 | 广东电网有限责任公司 | A kind of steam turbine load controls the revolving speed criterion calculation method and device of protection fastly |
-
2021
- 2021-07-30 CN CN202110872277.3A patent/CN113572144B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800121A (en) * | 2016-09-07 | 2018-03-13 | 南京南瑞继保电气有限公司 | A kind of Distributed power line protection method |
| CN110649581A (en) * | 2019-10-30 | 2020-01-03 | 中国南方电网有限责任公司 | Protection method for closed-loop power distribution network containing distributed power supply |
| CN112821360A (en) * | 2020-12-30 | 2021-05-18 | 中国电力科学研究院有限公司 | Safety and stability control method and system of electric power system based on flexible policy configuration |
| CN112803598A (en) * | 2021-03-05 | 2021-05-14 | 中国电力科学研究院有限公司 | Multi-source cooperative protection configuration method, system, equipment and storage medium for power distribution network |
Non-Patent Citations (3)
| Title |
|---|
| 大规模新能源接入宁东电网对继电保护的影响研究;鲁璐;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20190115;第34-38页 * |
| 水乡莞城片区电网稳控系统控制策略研究;朱锐钦;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20180515;第18-19页 * |
| 鲁璐.大规模新能源接入宁东电网对继电保护的影响研究.《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》.2019, * |
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