CN108105024B - SFC starting control method - Google Patents
SFC starting control method Download PDFInfo
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- CN108105024B CN108105024B CN201810006383.1A CN201810006383A CN108105024B CN 108105024 B CN108105024 B CN 108105024B CN 201810006383 A CN201810006383 A CN 201810006383A CN 108105024 B CN108105024 B CN 108105024B
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- Prior art keywords
- judging whether
- generator set
- executing
- sending
- oil pump
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 9
- 230000005284 excitation Effects 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/005—Starting, also of pump-turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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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
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- 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
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention relates to an SFC starting control method. The continuous dragging logic design is carried out on the SFC starting process, so that the frequency converter is reliable in logic operation, the unit starting process is smooth, and the safe and stable operation of equipment is favorably ensured.
Description
Technical Field
The invention relates to an SFC starting control method.
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 order to meet the requirement of continuously dragging the water pumping, phase modulation and grid connection of the unit in an emergency, the SFC starting process can design a continuous dragging logic.
Disclosure of Invention
The invention aims to provide an SFC starting control method, which ensures that the logic operation of a frequency converter is reliable, the starting process of a unit is smooth, and the safe and stable operation of equipment is favorably ensured.
In order to achieve the purpose, the technical scheme of the invention is as follows: an SFC start-up control method comprises the following steps,
(1.1) judging whether an auxiliary system power supply, a control system power supply and a tripping relay of a pumped storage power station generator set are normally powered, if so, executing the next step;
(1.2) judging whether the generator set has signals including faults, tripping and alarming, and if not, executing the next step;
(1.3) judging whether the frequency converter is in an available state, if so, selecting a motor of a generator set to be dragged, and judging whether the state of a disconnecting link, an input variable cooling oil pump or an output variable oil pump is normal; if yes, executing the next step;
(1.4) sending a command for starting an auxiliary engine of the generator set, and judging whether the state of the fan, the state of the input variable cooling oil pump or the state of the output variable oil pump are normal or not; if yes, sending a closing instruction of the input switch and the output switch, judging whether the input switch and the output switch are closed or not and whether the excitation system is started or not, and if yes, executing the next step;
(1.5) sending an excitation given value through an analog quantity channel, receiving an excitation actual value, releasing a pulse, dragging a motor of the generator set, judging whether the rotating speed of the generator set is greater than 10%, if so, switching a bypass disconnecting link to enable the bypass disconnecting link to be positioned on an output variable side, dragging the rotating speed of the generator set to 99%, preparing for grid connection, and executing the next step;
(1.6) enabling the generator set to meet the synchronous condition by monitoring frequency increase and decrease and voltage increase and decrease signal adjustment, and then starting the next generator set or preparing a frequency converter to stop;
(1.7) judging whether a dragged disconnecting link of the next unit is closed, if so, delaying for 5 minutes, judging whether a dragged disconnecting link closing signal of the next unit is received, if not, executing the next step, and if so, executing the step (1.5);
(1.8) sending a locking pulse command, setting the exciting current to be 0, sending an input and output switch opening command, delaying for 5 minutes, sending a fan stopping command, a command of stopping inputting and changing into a cooling oil pump, and a command of stopping outputting and changing into the oil pump.
Compared with the prior art, the invention has the following beneficial effects: the method ensures that the frequency converter operates reliably logically, the unit starts smoothly, and the safe and stable operation of the equipment is favorably ensured.
Drawings
FIG. 1 is a control flow of the SFC startup of the present invention.
FIG. 2 is a flow chart of the SFC dragging the next unit according to the present invention.
FIG. 3 is a SFC shutdown procedure of the present invention.
Detailed Description
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
As shown in fig. 1 to 3, an SFC startup control method of the present invention includes the steps of,
(1.1) judging whether an auxiliary system power supply, a control system power supply and a tripping relay of a pumped storage power station generator set are normally powered, if so, executing the next step;
(1.2) judging whether the generator set has signals including faults, tripping and alarming, and if not, executing the next step;
(1.3) judging whether the frequency converter is in an available state, if so, selecting a motor of a generator set to be dragged, and judging whether the state of a disconnecting link, an input variable cooling oil pump or an output variable oil pump is normal; if yes, executing the next step;
(1.4) sending a command for starting an auxiliary engine of the generator set, and judging whether the state of the fan, the state of the input variable cooling oil pump or the state of the output variable oil pump are normal or not; if yes, sending a closing instruction of the input switch and the output switch, judging whether the input switch and the output switch are closed or not and whether the excitation system is started or not, and if yes, executing the next step;
(1.5) sending an excitation given value through an analog quantity channel, receiving an excitation actual value, releasing a pulse, dragging a motor of the generator set, judging whether the rotating speed of the generator set is greater than 10%, if so, switching a bypass disconnecting link to enable the bypass disconnecting link to be positioned on an output variable side, dragging the rotating speed of the generator set to 99%, preparing for grid connection, and executing the next step;
(1.6) enabling the generator set to meet the synchronous condition by monitoring frequency increase and decrease and voltage increase and decrease signal adjustment, and then starting the next generator set or preparing a frequency converter to stop;
(1.7) judging whether a dragged disconnecting link of the next unit is closed, if so, delaying for 5 minutes, judging whether a dragged disconnecting link closing signal of the next unit is received, if not, executing the next step, and if so, executing the step (1.5);
(1.8) sending a locking pulse command, setting the exciting current to be 0, sending an input and output switch opening command, delaying for 5 minutes, sending a fan stopping command, a command of stopping inputting and changing into a cooling oil pump, and a command of stopping outputting and changing into the oil pump.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (1)
1. An SFC start control method is characterized in that: comprises the following steps of (a) carrying out,
(1.1) judging whether an auxiliary system power supply, a control system power supply and a tripping relay of a pumped storage power station generator set are normally powered, if so, executing the next step;
(1.2) judging whether the generator set has signals including faults, tripping and alarming, and if not, executing the next step;
(1.3) judging whether the frequency converter is in an available state, if so, selecting a motor of a generator set to be dragged, and judging whether the state of a disconnecting link, an input variable cooling oil pump or an output variable oil pump is normal; if yes, executing the next step;
(1.4) sending a command for starting an auxiliary engine of the generator set, and judging whether the state of the fan, the state of the input variable cooling oil pump or the state of the output variable oil pump are normal or not; if yes, sending a closing instruction of the input switch and the output switch, judging whether the input switch and the output switch are closed or not and whether the excitation system is started or not, and if yes, executing the next step;
(1.5) sending an excitation given value through an analog quantity channel, receiving an excitation actual value, releasing a pulse, dragging a motor of the generator set, judging whether the rotating speed of the generator set is greater than 10%, if so, switching a bypass disconnecting link to enable the bypass disconnecting link to be positioned on an output variable side, dragging the rotating speed of the generator set to 99%, preparing for grid connection, and executing the next step;
(1.6) enabling the generator set to meet the synchronous condition by monitoring frequency increase and decrease and voltage increase and decrease signal adjustment, and then starting the next generator set or preparing a frequency converter to stop;
(1.7) judging whether a dragged disconnecting link of the next unit is closed, if so, delaying for 5 minutes, judging whether a dragged disconnecting link closing signal of the next unit is received, if not, executing the next step, and if so, executing the step (1.5);
(1.8) sending a locking pulse command, setting the exciting current to be 0, sending an input and output switch opening command, delaying for 5 minutes, sending a fan stopping command, a command of stopping inputting and changing into a cooling oil pump, and a command of stopping outputting and changing into the oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006383.1A CN108105024B (en) | 2018-03-07 | 2018-03-07 | SFC starting control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006383.1A CN108105024B (en) | 2018-03-07 | 2018-03-07 | SFC starting control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108105024A CN108105024A (en) | 2018-06-01 |
| CN108105024B true CN108105024B (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006383.1A Active CN108105024B (en) | 2018-03-07 | 2018-03-07 | SFC starting control method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155883B (en) * | 2014-06-12 | 2016-09-14 | 国家电网公司 | A kind of startup control method of pump-storage generator SFC |
| CN105932701B (en) * | 2016-06-12 | 2018-04-10 | 国家电网公司 | A kind of water-storage multicomputer shares SFC and starts high voltage auxiliary power Optimal Configuration Method |
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| CN108105024A (en) | 2018-06-01 |
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