CN110829500A - Coordination method of variable frequency starting, excitation and monitoring system - Google Patents
Coordination method of variable frequency starting, excitation and monitoring system Download PDFInfo
- Publication number
- CN110829500A CN110829500A CN201911116264.2A CN201911116264A CN110829500A CN 110829500 A CN110829500 A CN 110829500A CN 201911116264 A CN201911116264 A CN 201911116264A CN 110829500 A CN110829500 A CN 110829500A
- Authority
- CN
- China
- Prior art keywords
- sfc
- excitation
- unit
- monitoring system
- starting
- 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.)
- Pending
Links
Images
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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/36—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using armature-reaction-excited machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/38—Self-excitation by current derived from rectification of both output voltage and output current of generator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention relates to a matching method of a variable frequency starting, exciting and monitoring system, which comprises the following steps: step S1, the monitoring system sends out a set starting command, a starting command to the SFC system and an excitation SFC mode command to the excitation control system; step S2, when the monitoring system receives feedback that the auxiliary machine of the SFC system is started and the SFC switch is switched on and feedback of the SFC mode of the excitation system, the SFC mode of the excitation control system is started and fed back to the SFC system; step S3: feeding back an excitation current set value to an excitation system according to the excitation current, and starting to drag the unit; step S4, when the rotating speed of the monitoring system unit is greater than 95% and the rotating speed of the SFC is greater than 99%, a synchronous device starting command is sent out, and the voltage and the frequency of the unit are adjusted until the outlet switch of the unit is switched on; and step S5, the monitoring system sends an SFC stop command to the excitation control system to adjust the automatic voltage, and the direction starting of the generator set motor is completed. The invention combines a variable frequency starting, exciting and monitoring system to realize the electric working condition grid connection of the pumped storage unit in the SFC mode.
Description
Technical Field
The invention relates to the field of pumped storage power station starting, in particular to a matching method of a variable frequency starting, exciting and monitoring system.
Background
The Static Frequency Converter (SFC) of the pumped storage power station is a frequency conversion alternating current output device which utilizes a thyristor to convert power frequency alternating current input into continuous and adjustable frequency conversion alternating current, can drag a generator motor from a static state to a rated rotating speed, is a preferred mode for starting a large-scale pumped storage power station in a pumping direction at present, and has very important function. In the use of the existing SFC, the cooperation method of the SFC, the monitoring system and the excitation system under the electric working condition of the pumped storage unit in the SFC mode does not exist.
Disclosure of Invention
In view of this, the present invention provides a method for matching a variable frequency starting, exciting and monitoring system, which combines the variable frequency starting, exciting and monitoring system to implement electric condition grid connection of a pumped storage unit in an SFC mode.
In order to achieve the purpose, the invention adopts the following technical scheme:
a matching method of a variable frequency starting, excitation and monitoring system comprises the following steps:
step S1, the monitoring system sends out a set starting command, a starting command to the SFC system and an excitation SFC mode command to the excitation control system;
step S2, after the monitoring system receives feedback that the auxiliary machine of the SFC system is started and the SFC switch is switched on and feedback of the SFC mode of the excitation system, the SFC mode of the excitation control system is started and fed back to the SFC system;
step S3: the SFC system operates, and starts to drag the unit according to the set value of exciting current fed back to the exciting system;
step S4, when the rotating speed of the monitoring system unit is greater than 95% and the rotating speed of the SFC is greater than 99%, a synchronous device starting command is sent out, and the voltage and the frequency of the unit are adjusted according to the voltage and the frequency of the power grid until the outlet switch of the unit is switched on;
and step S5, after the unit switch is switched on, the monitoring system sends an SFC stop command to the excitation control system to adjust the automatic voltage, and the direction starting of the motor of the unit is finished.
Furthermore, the SFC system consists of an input transformer, a rectifier, an inverter, a direct current smoothing reactor, an alternating current reactor and a control cabinet; the thyristor frequency conversion device is controlled to carry out frequency conversion speed regulation on the synchronous motor according to the rotating speed and the position signal of the synchronous motor, so that a frequency conversion power supply from zero to a rated frequency value is generated, and the unit is dragged synchronously.
Further, the excitation control system comprises an excitation regulator, an excitation power unit and a generator; the rotor winding of the synchronous generator provides an excitation power supply part of the direct-current excitation current, and the excitation regulator controls the device for outputting the excitation power unit according to an input signal of a control requirement and a given regulation criterion.
Compared with the prior art, the invention has the following beneficial effects:
the invention combines a variable frequency starting, exciting and monitoring system to realize the electric working condition grid connection of the pumped storage unit in the SFC mode.
Drawings
FIG. 1 is a schematic diagram of the method of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
Referring to fig. 1, the present invention provides a method for matching a variable frequency starting, exciting and monitoring system, comprising the following steps:
step S1, the monitoring system sends out a set starting command, a starting command to the SFC system and an excitation SFC mode command to the excitation control system;
step S2, after the monitoring system receives feedback that the auxiliary machine of the SFC system is started and the SFC switch is switched on and feedback of the SFC mode of the excitation system, the SFC mode of the excitation control system is started and fed back to the SFC system;
step S3: the SFC system operates, and starts to drag the unit according to the set value of exciting current fed back to the exciting system;
step S4, when the rotating speed of the monitoring system unit is greater than 95% and the rotating speed of the SFC is greater than 99%, a synchronous device starting command is sent out, and the voltage and the frequency of the unit are adjusted according to the voltage and the frequency of the power grid until the outlet switch of the unit is switched on;
and step S5, after the unit switch is switched on, the monitoring system sends an SFC stop command to the excitation control system to adjust the automatic voltage, and the direction starting of the motor of the unit is finished.
In this embodiment, the SFC system is composed of an input transformer, a rectifier, an inverter, a dc smoothing reactor, an ac reactor, and a control cabinet; the thyristor frequency conversion device is controlled to carry out frequency conversion speed regulation on the synchronous motor according to the rotating speed and the position signal of the synchronous motor, so that a frequency conversion power supply from zero to a rated frequency value is generated, and the unit is dragged synchronously.
In the embodiment, the excitation control system comprises an excitation regulator, an excitation power unit and a generator; the rotor winding of the synchronous generator provides an excitation power supply part of the direct-current excitation current, and the excitation regulator controls the device for outputting the excitation power unit according to an input signal of a control requirement and a given regulation criterion.
In this embodiment, the monitoring system is used for data acquisition; data processing and real-time alarming; and controlling the production process (starting and stopping of a unit, commissioning and quitting of equipment and the like).
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (3)
1. A matching method of a variable frequency starting, excitation and monitoring system is characterized by comprising the following steps:
step S1, the monitoring system sends out a set starting command, a starting command to the SFC system and an excitation SFC mode command to the excitation control system;
step S2, after the monitoring system receives feedback that the auxiliary machine of the SFC system is started and the SFC switch is switched on and feedback of the SFC mode of the excitation system, the SFC mode of the excitation control system is started and fed back to the SFC system;
step S3: the SFC system operates, and starts to drag the unit according to the set value of exciting current fed back to the exciting system;
step S4, when the rotating speed of the monitoring system unit is greater than 95% and the rotating speed of the SFC is greater than 99%, a synchronous device starting command is sent out, and the voltage and the frequency of the unit are adjusted according to the voltage and the frequency of the power grid until the outlet switch of the unit is switched on;
and step S5, after the unit switch is switched on, the monitoring system sends an SFC stop command to the excitation control system to adjust the automatic voltage, and the direction starting of the motor of the unit is finished.
2. The method for matching a variable frequency starting, exciting and monitoring system according to claim 1, wherein: the SFC system consists of an input transformer, a rectifier, an inverter, a direct current smoothing reactor, an alternating current reactor and a control cabinet; the thyristor frequency conversion device is controlled to carry out frequency conversion speed regulation on the synchronous motor according to the rotating speed and the position signal of the synchronous motor, so that a frequency conversion power supply from zero to a rated frequency value is generated, and the unit is dragged synchronously.
3. The method of claim 1, wherein the method comprises the steps of: the excitation control system comprises an excitation regulator, an excitation power unit and a generator; the rotor winding of the synchronous generator provides an excitation power supply part of the direct-current excitation current, and the excitation regulator controls the device for outputting the excitation power unit according to an input signal of a control requirement and a given regulation criterion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911116264.2A CN110829500A (en) | 2019-11-15 | 2019-11-15 | Coordination method of variable frequency starting, excitation and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911116264.2A CN110829500A (en) | 2019-11-15 | 2019-11-15 | Coordination method of variable frequency starting, excitation and monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110829500A true CN110829500A (en) | 2020-02-21 |
Family
ID=69555386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911116264.2A Pending CN110829500A (en) | 2019-11-15 | 2019-11-15 | Coordination method of variable frequency starting, excitation and monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110829500A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117939A (en) * | 2020-09-10 | 2020-12-22 | 大力电工襄阳股份有限公司 | Control method based on paper mill high-voltage synchronous frequency conversion soft starting device |
| CN113178118A (en) * | 2021-04-26 | 2021-07-27 | 中国能源建设集团广东省电力设计研究院有限公司 | Gas turbine starts grid-connected system based on movable mould emulation |
| CN117375088A (en) * | 2023-11-15 | 2024-01-09 | 南方电网调峰调频发电有限公司检修试验分公司 | SFC system continuous dragging energy storage unit method and device, SFC system and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155883A (en) * | 2014-06-12 | 2014-11-19 | 国家电网公司 | Starting control method for static frequency converter (SFC) of pump storage group |
-
2019
- 2019-11-15 CN CN201911116264.2A patent/CN110829500A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155883A (en) * | 2014-06-12 | 2014-11-19 | 国家电网公司 | Starting control method for static frequency converter (SFC) of pump storage group |
Non-Patent Citations (3)
| Title |
|---|
| 华东六省一市电机工程（电力）学会: "《电气设备及其系统》", 30 November 1999 * |
| 胡静等: ""一阶高通滤波在发电机低频时转子位置检测角中的应用"", 《电气技术》 * |
| 陆佑楣等: "《抽水蓄能电站》", 30 April 1992, 水利电力出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117939A (en) * | 2020-09-10 | 2020-12-22 | 大力电工襄阳股份有限公司 | Control method based on paper mill high-voltage synchronous frequency conversion soft starting device |
| CN113178118A (en) * | 2021-04-26 | 2021-07-27 | 中国能源建设集团广东省电力设计研究院有限公司 | Gas turbine starts grid-connected system based on movable mould emulation |
| CN113178118B (en) * | 2021-04-26 | 2023-02-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Gas turbine starts grid-connected system based on movable mould emulation |
| CN117375088A (en) * | 2023-11-15 | 2024-01-09 | 南方电网调峰调频发电有限公司检修试验分公司 | SFC system continuous dragging energy storage unit method and device, SFC system and storage medium |
| CN117375088B (en) * | 2023-11-15 | 2024-04-02 | 南方电网调峰调频发电有限公司检修试验分公司 | SFC system continuous dragging energy storage unit method and device, SFC system and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110829500A (en) | Coordination method of variable frequency starting, excitation and monitoring system | |
| US4994684A (en) | Doubly fed generator variable speed generation control system | |
| CN108900115B (en) | Self-adaptive current control method for pumped storage static frequency converter | |
| JP2004525598A (en) | Wind power facility operation method | |
| CN102570934B (en) | Start control method for working condition excitation system of static frequency converter of pumped-storage aggregate set | |
| CN100373760C (en) | Control method of induction motor | |
| CN110336502B (en) | Black-start alternating-current excitation device of pumped storage variable-speed unit and control method thereof | |
| CN102324883B (en) | Static frequency conversion starting power factor optimal control method for pumped storage power station | |
| CN104038075A (en) | Novel frequency converter | |
| CN105471339A (en) | Asynchronous starting device of brushless doubly-fed machine | |
| CN104518729A (en) | Method and arrangement for operating a pump | |
| CN109274300B (en) | Starting and excitation system and method for gas turbine generator set | |
| CN104484004A (en) | Control device of online UPS and online UPS | |
| CN204886644U (en) | Power generation system is taken to magnetic coupling axle | |
| CN103633667B (en) | A kind of draw water power regulating system and method controlled based on IGBT | |
| CN203933491U (en) | A kind of two quadrant operation winding motor rotor-side unit shunting in parallel drive systems | |
| CN202586848U (en) | Water drawing energy storage power station stationary frequency conversion starting power factor optimal controlling means | |
| CN207124577U (en) | Generator digital excitation system reactance parameter adjustment control | |
| CN106899242B (en) | Brushless doubly-fed motor starting control device and method | |
| CN201984146U (en) | Load regulating and stabilizing device for motor testing system | |
| CN105119464A (en) | Magnetic coupling shaft generation system and application of magnetic coupling shaft generation system in ship | |
| JPS5812596A (en) | Power factor regulating method for wound-rotor induction motor | |
| CN201541218U (en) | Soft starting and double-fed speed regulation integrated device for high-voltage winding motor | |
| CN211027543U (en) | Wire drawing machine control system | |
| CN201029224Y (en) | Full digitized machine set cascade speed control device |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |