CN114640121B - Flexible straight back-to-back system, method, equipment and medium with alternating current connecting wire control - Google Patents
Flexible straight back-to-back system, method, equipment and medium with alternating current connecting wire control Download PDFInfo
- Publication number
- CN114640121B CN114640121B CN202210212291.5A CN202210212291A CN114640121B CN 114640121 B CN114640121 B CN 114640121B CN 202210212291 A CN202210212291 A CN 202210212291A CN 114640121 B CN114640121 B CN 114640121B
- Authority
- CN
- China
- Prior art keywords
- unit
- control
- power
- alternating current
- pcp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The invention discloses a flexible straight back-to-back system, a method, equipment and a medium with alternating current connecting line control, wherein the system is a double unit, each unit is divided into two sides, and each side is provided with a control host PCP device to complete a voltage or power control function; the PCP device is in double redundancy configuration and is divided into a set A and a set B, and in normal operation, one set of PCP device is in an on-duty state and is a current effective system, and the other set of PCP device is in a standby state and is a current hot standby system; the PCP device is provided with a matched IO device and is used for realizing the alternating current bus voltage acquisition function. The method synchronously collects the voltages of the side alternating current system and the opposite side alternating current system, thereby ensuring that the control function of the alternating current connecting line can be realized.
Description
Technical Field
The invention belongs to the technical field of flexible direct current transmission systems, and particularly relates to a flexible direct current back-to-back system with alternating current connecting line control, a method, equipment and a medium.
Background
The flexible direct current transmission system adopts a voltage source type converter, and can independently and rapidly control the active power and the reactive power of the system, thereby improving the stability of the system, inhibiting the fluctuation of the frequency and the voltage of the system and improving the steady-state performance of the alternating current system. With the development of flexible direct current transmission technology, flexible direct current transmission systems are increasingly used for occasions such as new energy grid connection, urban power supply, island power supply, power grid interconnection and the like.
When the method is applied to the interconnection of regional power grids, a back-to-back topology mode is mostly adopted. When the flexible direct-current back-to-back operation is in the HVDC operation mode, namely the active power transmission mode, a constant direct-current voltage control mode is adopted on the transmission power side, and an independent unit (monopole) control mode or a double-unit (bipolar) coordination power control mode is adopted on the receiving power side.
The partially newly built soft direct back-to-back engineering has the function of simulating an alternating current connecting line, and the power instruction value automatically tracks the alternating current voltage amplitude and the phase of the double-side grid-connected points and simulates a given virtual reactance value between the double-side grid-connected points on the premise that the flexible direct current transmission capacity is not exceeded during steady operation. The soft straight back-to-back engineering with the function of simulating the alternating current connecting line is different from the conventional engineering in the wiring of a measuring system, and the research on the aspect is lacking at present.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provides a flexible back-to-back system, a flexible back-to-back method, flexible back-to-back equipment and a flexible back-to-back medium with alternating current connection line control.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a flexible straight back-to-back system with alternating current connecting line control is provided, the flexible straight back-to-back system is a double unit, each unit is divided into two sides, and each side is provided with a control host PCP device to complete a voltage or power control function;
the PCP device is in double redundancy configuration and is divided into a set A and a set B, and in normal operation, one set of PCP device is in an on-duty state and is a current effective system, and the other set of PCP device is in a standby state and is a current hot standby system;
the PCP device is provided with a matched IO device and is used for realizing the alternating current bus voltage acquisition function.
Furthermore, the PCP device receives the voltage data of the bus on the side measured by the IO device matched with the PCP device, and also receives the voltage data of the bus on the opposite side measured by the same set of IO devices on the other side of the unit.
Further, according to the direction of tide and the number of operation units, the flexible straight back-to-back system comprises 6 operation modes, specifically:
in the first mode, the tide direction is west to east, and the running unit is a first unit;
in a second mode, the tide direction is west to east, and the running unit is a second unit;
in the third mode, the tide direction is west to east, and the running units are double units;
in a fourth mode, the tide direction is east to west, and the running unit is a first unit;
in a fifth mode, the tide direction is east to west, and the running unit is a second unit;
in a sixth mode, the tide direction is east to west, and the running units are double units.
Further, when the soft-direct back-to-back system operates in the first, second and third modes, the alternating current connection line control is specifically used for controlling direct current voltage at the west side of the unit and controlling power at the east side of the unit;
when the soft direct back-to-back system operates in the fourth, fifth and sixth modes, the alternating current connection line control specifically controls the direct current voltage on the east side of the unit and controls the power on the west side of the unit.
The invention also provides a control method of the alternating current connecting wire of the flexible straight back-to-back system, which is based on the flexible straight back-to-back system provided by the invention and comprises the following steps:
s1, inputting an alternating current connecting wire control function on one side of power control;
s2, determining the magnitude of the analog impedance value according to the dispatching instruction, and setting the virtual impedance value into the PCP device in the control state of the alternating current connecting line through the control background;
s3, synchronously collecting alternating-current system voltages at two sides by using a measuring device;
s4, calculating an active power value to be transmitted and transmitting power;
s5, calculating and adjusting the active power value of the flexible direct back-to-back system in real time according to the change of the voltage of the alternating current systems at the two sides, and realizing the control of the alternating current connecting wire.
Further, in step S2, for the case of single unit operation, the virtual impedance value is set to the PCP device of the a-and B-sets on the control power side;
for the case of dual cell operation, the virtual impedance values are set into the two cell control power side, a-and B-set PCP devices.
Further, in step S3, for the case of operation of a single unit, U1 and θ1 measured by the matched IO device and U2 and θ2 measured by the same set of IO device on the other side of the unit, which are received by the unit power control side duty PCP device, are collected;
for the double-unit operation condition, if the first unit is in an operation state firstly and the second unit is in an operation state later, collecting U1 and theta 1 which are received by a PCP device on duty at the power side of the first unit and are measured by matched IO devices of the PCP device and U2 and theta 2 which are measured by the same set of IO devices at the other side of the first unit;
if the second unit is in the running state firstly, the first unit is in the running state later, and U1 and theta 1 which are received by the power-side duty PCP device controlled by the second unit and measured by the matched IO devices and U2 and theta 2 which are measured by the same set of IO devices on the other side of the second unit are collected.
Further, in step S4, for the operation mode in which the control power side is the east side, the calculation formula of the active power value to be transmitted is:
for the operation mode that the control power side is the west side, the calculation formula of the active power value to be transmitted is as follows:
for the case of single unit operation, power is transmitted entirely by the operating unit, and for the case of dual unit operation, power is equally distributed by the two units, each transmission calculating half of the power value.
The invention also provides a computer device comprising a memory storing a computer program and a processor implementing the method provided by the invention when executing the computer program.
The invention also provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the method provided by the invention.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. aiming at the problem that no alternating current connecting wire control implementation method exists in the prior art, the invention provides a flexible straight back-to-back system, a flexible straight back-to-back method, flexible straight back-to-back equipment and a flexible straight back-to-back medium which are provided with alternating current connecting wire control, and can realize the function of alternating current connecting wire control; the invention directly adopts the opposite side voltage data, and compared with the method of mutual transmission of the host computers, the method has small delay and high precision; and moreover, the host and the matched IO are in double-set redundancy configuration, so that the reliability is high.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a flow chart of the method of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Examples
As shown in fig. 1, the invention provides a flexible straight back-to-back system with ac connection line control, which is a double unit, each unit is divided into two sides, and each side is completed with voltage or power control function by a control host PCP device;
the PCP device is in double redundancy configuration and is divided into a set A and a set B, and in normal operation, one set of PCP device is in an on-duty state and is a current effective system, and the other set of PCP device is in a standby state and is a current hot standby system;
the PCP device is provided with a matched IO device and is used for realizing the alternating current bus voltage acquisition function; the PCP device receives the voltage data of the bus on the side measured by the IO device matched with the PCP device and the voltage data of the bus on the opposite side measured by the same set of IO devices on the other side of the unit.
In the present embodiment, as shown in fig. 1, among names of PCP devices and IO devices, a first number represents a side, 1 represents an east side, and 2 represents a west side; a second digital representation unit; letter A, B indicates a set a and a set B, e.g. PCP11A indicates a set a PCP device on the east side of unit 1.
The flexible back-to-back system includes 6 modes of operation according to the direction of tidal current and the number of operating units, as shown in table 1 below.
| Direction of tidal current | Control mode | Operation unit | |
| Mode 1 | Western- (western-) style food>East (Dong) | West side control DC voltage and east side control power | Unit 1 |
| Mode 2 | Western- (western-) style food>East (Dong) | West side control DC voltage and east side control power | Unit 2 |
| Mode 3 | Western- (western-) style food>East (Dong) | West side control DC voltage and east side control power | Unit 1, unit 2 |
| Mode 4 | Dong- (east-) a Chinese medicinal composition>Western medicine | West side control power and east side control DC voltage | Unit 1 |
| Mode 5 | Dong- (east-) a Chinese medicinal composition>Western medicine | West side control power and east side control DC voltage | Unit 2 |
| Mode 6 | Dong- (east-) a Chinese medicinal composition>Western medicine | West side control power and east side control DC voltage | Unit 1, unit 2 |
TABLE 1
In another embodiment, a method for controlling ac connection lines of a soft-straight back-to-back system is provided, where the method is based on the soft-straight back-to-back system described in the above embodiment, and this embodiment is exemplified by mode 1 and mode 6 in table 1; as shown in fig. 2, the method comprises the following steps:
s1, inputting an alternating current connecting wire control function on one side of power control; when operating according to mode 1, an alternating current connecting wire control function is put into the power control side, namely the east side; when operating in mode 6, the ac line control function is put into operation on the power control side, i.e., the west side.
S2, determining the magnitude of the analog impedance value according to the dispatching instruction, and setting the virtual impedance value into the PCP device in the control state of the alternating current connecting line through the control background;
for mode 1, X is set into PCP11A and PCP 11B; for mode 6, X is set into PCP21A, PCP, B, PCP, 22A, PCP B.
S3, synchronously collecting alternating-current system voltages at two sides by using a measuring device; for mode 1, if PCP11A is an on-duty system and PCP11B is a standby system, U1, θ1 measured by IO11A and U2, θ2 measured by IO21A received by PCP11A are adopted;
for mode 6, if the unit 1 is in the operation state first, the unit 2 is in the operation state later, the PCP21A is a duty system, and the PCP21B is a standby system, then the U1, θ1 measured by the IO11A and the U2, θ2 measured by the IO21A received by the PCP21A are adopted, if the unit 2 is in the operation state first, the unit 1 is in the operation state later, and the PCP22A is a duty system, and the PCP22B is a standby system, then the U1, θ1 measured by the IO12A and the U2, θ2 measured by the IO22A received by the PCP22A are adopted.
S4, calculating an active power value to be transmitted and transmitting power;
for mode 1, the formula isCalculating to obtain an active power value to be transmitted, wherein the active power value is transmitted by the unit 1;
for mode 6, the formula isAnd calculating to obtain the active power value to be transmitted, wherein the unit 1 and the unit 2 are distributed evenly, and each transmission calculates half of the power value.
S5, calculating and adjusting the active power value of the flexible direct back-to-back system in real time according to the change of the voltage of the alternating current systems at the two sides, and realizing the control of the alternating current connecting wire.
In another embodiment, a computer device is provided, comprising a memory storing a computer program and a processor implementing the method of the above embodiments when the processor executes the computer program.
In another embodiment, a computer readable storage medium is provided, storing a computer program which, when executed by a processor, implements the method of the above embodiments.
It should also be noted that in this specification, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The control method of the alternating current connecting wire of the flexible straight back-to-back system is characterized by comprising the following steps of:
s1, inputting an alternating current connecting wire control function on one side of power control;
s2, determining the magnitude of the analog impedance value according to the dispatching instruction, and setting the virtual impedance value into the PCP device in the control state of the alternating current connecting line through the control background;
s3, synchronously collecting alternating-current system voltages at two sides by using a measuring device;
s4, calculating an active power value to be transmitted and transmitting power;
s5, calculating and adjusting the active power value of the flexible direct back-to-back system in real time according to the change of the voltage of the alternating current systems at two sides, so as to realize the control of the alternating current connecting wire;
in step S3, for the case of operation of a single unit, U1 and θ1 measured by an IO device matched with the unit control power side duty PCP device and U2 and θ2 measured by the same set of IO devices on the other side of the unit are collected;
for the double-unit operation condition, if the first unit is in an operation state firstly and the second unit is in an operation state later, collecting U1 and theta 1 which are received by a PCP device on duty at the power side of the first unit and are measured by matched IO devices of the PCP device and U2 and theta 2 which are measured by the same set of IO devices at the other side of the first unit;
if the second unit is in the running state firstly, the first unit is in the running state later, and U1 and theta 1 which are received by the power-side duty PCP device controlled by the second unit and measured by the matched IO devices and U2 and theta 2 which are measured by the same set of IO devices on the other side of the second unit are collected.
2. The method according to claim 1, wherein in step S2, for the case of single unit operation, the virtual impedance value is set to the a-and B-set PCP device controlling the power side;
for the case of dual cell operation, the virtual impedance values are set into the two cell control power side, a-and B-set PCP devices.
3. The method for controlling ac link line of soft-direct back-to-back system according to claim 1, wherein in step S4, for the operation mode in which the control power side is the east side, the calculation formula of the active power value to be transmitted is:
for the operation mode that the control power side is the west side, the calculation formula of the active power value to be transmitted is as follows:
for the case of single unit operation, power is transmitted entirely by the operating unit, and for the case of dual unit operation, power is equally distributed by the two units, each transmission calculating half of the power value.
4. The method for controlling the alternating current connecting wire of the flexible straight back-to-back system according to claim 1, wherein the flexible straight back-to-back system is a double unit, each unit is divided into an east-west side and each side is provided with a control host PCP device for controlling voltage or power;
the PCP device is in double redundancy configuration and is divided into a set A and a set B, and in normal operation, one set of PCP device is in an on-duty state and is a current effective system, and the other set of PCP device is in a standby state and is a current hot standby system;
the PCP device is provided with a matched IO device and is used for realizing the alternating current bus voltage acquisition function; the PCP device receives the voltage data of the bus on the side measured by the IO device matched with the PCP device and the voltage data of the bus on the opposite side measured by the same set of IO devices on the other side of the unit.
5. The method for controlling ac connecting lines of a flexible direct back-to-back system according to claim 4, wherein the flexible direct back-to-back system comprises 6 operation modes according to the direction of tide and the number of operation units, specifically:
in the first mode, the tide direction is west to east, and the running unit is a first unit;
in a second mode, the tide direction is west to east, and the running unit is a second unit;
in the third mode, the tide direction is west to east, and the running units are double units;
in a fourth mode, the tide direction is east to west, and the running unit is a first unit;
in a fifth mode, the tide direction is east to west, and the running unit is a second unit;
in a sixth mode, the tide direction is east to west, and the running units are double units.
6. The method for controlling ac link line of soft-direct back-to-back system according to claim 5, wherein when the soft-direct back-to-back system is operated in one, two and three modes of operation, the ac link line control is specifically a unit west side control dc voltage and a unit east side control power;
when the soft direct back-to-back system operates in the fourth, fifth and sixth modes, the alternating current connection line control specifically controls the direct current voltage on the east side of the unit and controls the power on the west side of the unit.
7. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the method according to any of claims 1-6 when executing the computer program.
8. A computer readable storage medium storing a computer program, which when executed by a processor, implements the method according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210212291.5A CN114640121B (en) | 2022-03-04 | 2022-03-04 | Flexible straight back-to-back system, method, equipment and medium with alternating current connecting wire control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210212291.5A CN114640121B (en) | 2022-03-04 | 2022-03-04 | Flexible straight back-to-back system, method, equipment and medium with alternating current connecting wire control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114640121A CN114640121A (en) | 2022-06-17 |
| CN114640121B true CN114640121B (en) | 2023-08-08 |
Family
ID=81948719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210212291.5A Active CN114640121B (en) | 2022-03-04 | 2022-03-04 | Flexible straight back-to-back system, method, equipment and medium with alternating current connecting wire control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114640121B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201590682U (en) * | 2009-12-04 | 2010-09-22 | 南京南瑞继保电气有限公司 | Communication device between stability control system and direct current control protective system |
| CN106451771A (en) * | 2016-10-09 | 2017-02-22 | 国网上海市电力公司 | Control and protection system of high-voltage DC transmission system |
| CN106655073A (en) * | 2016-11-07 | 2017-05-10 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Converter station pole control system inter-electrode and inter-station communication redundancy apparatus and inter-electrode and inter-station communication method |
| CN107887922A (en) * | 2017-11-13 | 2018-04-06 | 广东电网有限责任公司电力调度控制中心 | One kind is based on the convertible direct current transportation operation method of single bipolarity and circuit |
| CN209948691U (en) * | 2019-03-22 | 2020-01-14 | 北京四方继保自动化股份有限公司 | Bipolar control device of multi-terminal extra-high voltage direct current transmission system |
| CN112398159A (en) * | 2020-11-12 | 2021-02-23 | 南方电网科学研究院有限责任公司 | Flexible direct-current transmission alternating-current operation method, device, equipment and storage medium |
| CN113541138A (en) * | 2021-08-20 | 2021-10-22 | 西安西电电力系统有限公司 | Fan switching method and device suitable for mode conversion of direct-current power transmission system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2160829B1 (en) * | 2007-05-14 | 2017-07-12 | ABB Schweiz AG | Redundant current valve control in a high voltage power transmission system |
-
2022
- 2022-03-04 CN CN202210212291.5A patent/CN114640121B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201590682U (en) * | 2009-12-04 | 2010-09-22 | 南京南瑞继保电气有限公司 | Communication device between stability control system and direct current control protective system |
| CN106451771A (en) * | 2016-10-09 | 2017-02-22 | 国网上海市电力公司 | Control and protection system of high-voltage DC transmission system |
| CN106655073A (en) * | 2016-11-07 | 2017-05-10 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Converter station pole control system inter-electrode and inter-station communication redundancy apparatus and inter-electrode and inter-station communication method |
| CN107887922A (en) * | 2017-11-13 | 2018-04-06 | 广东电网有限责任公司电力调度控制中心 | One kind is based on the convertible direct current transportation operation method of single bipolarity and circuit |
| CN209948691U (en) * | 2019-03-22 | 2020-01-14 | 北京四方继保自动化股份有限公司 | Bipolar control device of multi-terminal extra-high voltage direct current transmission system |
| CN112398159A (en) * | 2020-11-12 | 2021-02-23 | 南方电网科学研究院有限责任公司 | Flexible direct-current transmission alternating-current operation method, device, equipment and storage medium |
| CN113541138A (en) * | 2021-08-20 | 2021-10-22 | 西安西电电力系统有限公司 | Fan switching method and device suitable for mode conversion of direct-current power transmission system |
Non-Patent Citations (1)
| Title |
|---|
| 杨光亮 ; 邰能灵 ; 郑晓冬 ; 涂崎 ; 陈安鹏 ; .高压直流输电控制保护多重化分析.电力系统自动化.2010,(15),第85-90页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114640121A (en) | 2022-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100573392C (en) | The responding power circulation demand is optimized the flow controller of power delivery | |
| CN102237691B (en) | Wind energy and solar energy grid-connected generation system and control method thereof | |
| WO2018103317A1 (en) | Universal power flow calculation method for power system comprising upfc | |
| CN108418255A (en) | A kind of extra-high voltage direct-current suitable for the new energy containing high permeability sends Electric power network planning method and system outside | |
| US20060282239A1 (en) | Method of setting-up steady state model of VSC-based multi-terminal HVDC transmission system | |
| CN102427243B (en) | Multi-terminal DC (Direct Current) power transmission system for combined synchronization of wind power plant and conventional power plant | |
| CN101741094B (en) | Turn-off device-based mobile power transmission device | |
| CN104538988B (en) | Voltage stability regulating system for distributed power connection and control method thereof | |
| CN105375513B (en) | A kind of 110 kilovolts of wind power field automatic voltage controls based on real-time on-line equivalent | |
| CN112035984B (en) | Collaborative planning method for comprehensive energy system of electricity-gas-storage area | |
| CN103701130A (en) | Hysteresis control method of three-phase four-switch-type active filter | |
| Armghan et al. | Double integral action based sliding mode controller design for the back-to-back converters in grid-connected hybrid wind-PV system | |
| Zhong et al. | Connecting the home grid to the public grid: Field demonstration of virtual synchronous machines | |
| CN113595093B (en) | Reactive voltage automatic control method and device for new energy power station and storage medium | |
| CN108879797B (en) | Active power distribution network port PQ control method | |
| CN108808681A (en) | Grid-connected tidal current computing method based on mixed injection model | |
| CN114640121B (en) | Flexible straight back-to-back system, method, equipment and medium with alternating current connecting wire control | |
| CN107069747B (en) | A kind of minimum start-up mode based on regional voltage stabilization determines method | |
| CN103490423B (en) | Wind-farm reactive instruction distribution method | |
| Shanthini et al. | Power quality enhancement of wind generators connected to grid | |
| CN115833268B (en) | Phase-locked loop-free networking cluster aggregation regulation method for accessing high-proportion new energy into power grid | |
| WO2024001201A1 (en) | Split-phase output power adjustment system and method for low-voltage transformer area, and storage medium | |
| CN106786742A (en) | A kind of integrated converting means and control method for photovoltaic tractive power supply system | |
| CN110365005A (en) | A kind of Virtual Controller for direct current micro-grid system | |
| CN107508318B (en) | Active control method and system based on voltage sensitivity partition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |