CN112761746A - Auxiliary frequency modulation system and method based on water side flow splitting mode of low-pressure heater - Google Patents
Auxiliary frequency modulation system and method based on water side flow splitting mode of low-pressure heater Download PDFInfo
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- CN112761746A CN112761746A CN202110115802.7A CN202110115802A CN112761746A CN 112761746 A CN112761746 A CN 112761746A CN 202110115802 A CN202110115802 A CN 202110115802A CN 112761746 A CN112761746 A CN 112761746A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/30—Exhaust heads, chambers, or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/003—Arrangements for measuring or testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Turbines (AREA)
Abstract
An auxiliary frequency modulation system and method based on a water side flow dividing mode of a low-pressure heater comprise a condensate pump, wherein the condensate pump is communicated with an inlet of a first regulating valve, and an outlet main pipe of the first regulating valve is divided into two paths: the first path is communicated with a water side inlet of a first low-pressure heater, a water side outlet of the first low-pressure heater is communicated with a water side inlet of a second low-pressure heater, a water side outlet of the second low-pressure heater is communicated with a water side inlet of a third low-pressure heater, a water side outlet of the third low-pressure heater is communicated with an inlet of a deaerator, the second path is communicated with an inlet of a second regulating valve, and an outlet of the second regulating valve is communicated with an inlet of the deaerator; and the second regulating valve is connected with the opening signal output by the condensed water frequency-regulating control unit. The invention controls the flow of the condensed water at the low-pressure heater side by quickly opening the condensed water bypass regulating valve, quickly responds to primary frequency modulation, simultaneously maintains the total amount of the condensed water unchanged, reduces system disturbance, and simultaneously achieves the purpose of quickly responding to the primary frequency modulation.
Description
Technical Field
The invention relates to the technical field of frequency modulation of power plants, in particular to an auxiliary frequency modulation system and method based on a water side flow splitting mode of a low-pressure heater.
Background
The power grid frequency is one of the main indexes of the power quality and is a mark for measuring whether the generated power and the power load are balanced. With the operation of a power grid entering an extra-high voltage AC-DC hybrid operation state, in recent years, the grid loading amount of new energy power generation increases, the peak-to-valley difference of peak-load regulation operation of the power grid increases year by year, the risk of stabilizing the frequency of the power grid caused by power loss also increases, a higher requirement is provided for the stability of the system frequency, and the thermal power generating unit is still the main force of the power grid for responding to the primary frequency modulation capability. The essence of primary frequency modulation is that the active output of a unit is rapidly changed when the frequency of a power grid is disturbed, the power balance and the frequency stability of the power grid are maintained, when the frequency of the power grid is reduced to exceed a certain dead zone, the load of the unit is increased, so that the frequency of the power grid is increased, otherwise, when the frequency of the power grid is increased to exceed the certain dead zone, the load of the unit is reduced, and the frequency of the power grid is reduced. The supercritical thermal power generating unit usually adopts a sliding pressure operation mode, namely, the opening of a steam turbine is enlarged as much as possible to avoid throttling loss in the steam inlet process, and the problem of insufficient rapid load increasing capability of the steam turbine under large frequency difference is caused by the fact that the opening has no adjustment margin.
The condensed water frequency modulation mode has the characteristics of high speed, small amplitude and temporality, accords with the characteristic of primary frequency modulation, and is a primary frequency modulation method researched in recent years. Most of the existing condensed water frequency modulation adopts throttling frequency modulation, the flow of condensed water is reduced through a water feeding regulating valve of a deaerator, the heat balance of a low-pressure heater is influenced, so that the steam extraction quantity of a steam turbine is changed, and the load of a unit is changed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an auxiliary frequency modulation system and method based on a low-pressure heater water side flow dividing mode.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an auxiliary frequency modulation system based on low pressure feed water heater water side reposition of redundant personnel mode, includes condensate pump 1, and condensate pump 1 is linked together with 7 entrys of first governing valve, and 7 female pipes in first governing valve export divide two the tunnel: the first path is communicated with a water side inlet of a first low-pressure heater 3, a water side outlet of the first low-pressure heater 3 is communicated with a water side inlet of a second low-pressure heater 4, a water side outlet of the second low-pressure heater 4 is communicated with a water side inlet of a third low-pressure heater 5, a water side outlet of the third low-pressure heater 5 is communicated with an inlet of a deaerator 8, the second path is communicated with an inlet of a second regulating valve 10, and an outlet of the second regulating valve 10 is communicated with an inlet of the deaerator 8;
the second regulating valve 10 is connected with an opening signal output by the condensed water frequency regulating control unit 15.
And a first stop valve 2 is arranged between the outlet of the first regulating valve 7 and the water side inlet of the first low-pressure heater 3.
And a second stop valve 6 is arranged between the outlet of the water side of the third low-pressure heater 5 and the inlet of the deaerator 8.
And a third stop valve 9 and a fourth stop valve 11 are arranged in front of and behind the second regulating valve 10, a third stop valve input pipeline is connected to a pipeline between the first regulating valve 7 and the first stop valve 2, and a fourth stop valve 11 output pipeline is connected to a pipeline between the second stop valve 6 and an inlet of the deaerator 8.
The steam side inlet of the first low-pressure heater 3 is communicated with a first steam extraction pipeline 12 of the steam turbine, the steam side inlet of the second low-pressure heater 4 is communicated with a second steam extraction pipeline 13 of the steam turbine, and the steam side inlet of the third low-pressure heater 5 is communicated with a third steam extraction pipeline 14 of the steam turbine.
The condensed water frequency modulation control unit 15 is realized by DCS system control logic.
The condensed water frequency modulation control unit 15 comprises a subtracter 16, a first correction module 17, a second correction module 18 and a multiplier 19;
the subtractor 16 is connected with a rotating speed input signal in an input mode, and the rotating speed input signal is used for calculating the rotating speed deviation of the unit; the output of the subtracter 16 is connected with the input of the first correction block 17, and the subtracter 16 is used for converting the theoretical opening value of the second regulating valve 10 according to the deviation of the rotating speed of the unit; the second correction module 18 inputs and is connected with a unit load input signal, and the unit load input signal is used for correcting the valve opening coefficient according to the unit load; the output of the first correction module 17 and the output of the second correction module 18 are respectively connected with the input of a multiplier 19 and used for calculating the actual opening instruction of the valve, and the multiplier 19 outputs the valve opening instruction to be connected with the second regulating valve 10.
An operation method of an auxiliary frequency modulation system based on a low-pressure heater water side flow dividing mode comprises the following steps;
in the process of the unit running with load, a condensate pump 1 runs, condensate sequentially passes through a first regulating valve 7, a first stop valve 2, a first low-pressure heater 3, a second low-pressure heater 4, a third low-pressure heater 5 and a second stop valve 6 to be fed to a deaerator 8, the steam is pumped to the steam extraction side of the low-pressure heater, a condensate bypass third stop valve 9 and a fourth stop valve 10 are in an open state, and the condensate bypass second regulating valve 10 receives an output instruction of a condensate frequency modulation control unit 15;
when the rotation speed of the unit changes, the rotation speed input signal and the rated rotation speed are calculated through the subtracter 16 to obtain a rotation speed deviation signal, the rotation speed deviation signal is connected to the first correction module 17, and the first correction module 17 calculates the theoretical opening instruction of the second regulating valve 10 according to the rotation speed deviation; meanwhile, a unit load input signal is connected to the second correction module 18, and a valve correction coefficient is calculated through the second correction module 18 according to the actual load interval of the unit; the theoretical instruction signal of the second regulating valve and the valve correction coefficient are connected to the input of the multiplier 19, the opening signal of the second regulating valve 10 is obtained through calculation by the multiplier 19, and the opening of the second regulating valve 10 is rapidly changed; when the frequency of the power grid is reduced to exceed a primary frequency modulation dead zone, the second regulating valve 10 is quickly opened, and the flow of condensate water passing through the low-pressure heater is instantly reduced, so that the steam extraction quantity at the steam side of the low-pressure heater is reduced, the steam quantity of the work of the steam turbine is increased, the load is quickly increased, and the unit can quickly respond to the primary frequency modulation requirement.
The invention has the beneficial effects that:
when the auxiliary frequency modulation system based on the water side flow dividing mode of the low-pressure heater works specifically, when the frequency of a unit is reduced to exceed a frequency modulation dead zone, the condensed water bypass regulating valve is quickly opened according to the relation between the condensed water flow and the frequency modulation load, so that the condensed water amount on the side of the low-pressure heater is reduced, the steam extraction amount of a steam turbine is reduced, the working steam amount of the steam turbine is increased, the total amount of the condensed water is kept unchanged while the steam turbine regulating valve is in an economic operation mode, and severe disturbance to other systems is reduced. The invention has the characteristics of high frequency modulation rate, high economy and small interference to a system.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The system comprises a condensate pump 1, a first stop valve 2, a first low-pressure heater 3, a second low-pressure heater 4, a third low-pressure heater 5, a second stop valve 6, a first regulating valve 7, a deaerator 8, a third stop valve 9, a second regulating valve 10, a fourth stop valve 11, a first steam extraction pipeline 12, a second steam extraction pipeline 13, a third steam extraction pipeline 14, a condensate frequency modulation control unit 15, a subtracter 16, a first correction module 17, a second correction module 18 and a multiplier 19.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the auxiliary frequency modulation system and method based on the low-pressure heater water side flow splitting mode according to the present invention includes a condensate pump 1, a first low-pressure heater 3, a second low-pressure heater 4, a third low-pressure heater 5, a first regulating valve 7, a deaerator 8, a second regulating valve 10, and a condensate frequency modulation control unit 15;
A first stop valve 2 is arranged between the outlet of the first regulating valve 1 and the first low-pressure heater 3.
A second stop valve 6 is arranged between the outlet of the third low-pressure heater 5 and the deaerator 8.
And a third stop valve 9 and a fourth stop valve 11 are arranged in front of and behind the second regulating valve 10, a third stop valve input pipeline is connected to a pipeline between the first regulating valve 7 and the first stop valve 2, and a fourth stop valve 11 output pipeline is connected to a pipeline between the second stop valve 6 and an inlet of the deaerator 8.
The steam turbine further comprises a first steam extraction pipeline 12 of the steam turbine, a second steam extraction pipeline 13 of the steam turbine and a third steam extraction pipeline 14 of the steam turbine, wherein the first steam extraction pipeline 12 of the steam turbine is communicated with a steam side inlet of the first low-pressure heater 3, the second steam extraction pipeline 13 of the steam turbine is communicated with a steam side inlet of the second low-pressure heater 4, and the third steam extraction pipeline 14 of the steam turbine is communicated with a steam side inlet of the third low-pressure heater 5.
The condensed water frequency modulation control unit 15 includes a subtracter 16, a first correction module 17, a second correction module 18, and a multiplier 19.
The rotating speed input signal and the rated rotating speed are connected with the input of the subtracter 16 and used for calculating the rotating speed deviation of the unit; the output of the subtracter 16 is connected with the input of the first correction block 17 and used for converting the theoretical opening value of the second regulating valve 10 according to the deviation of the rotating speed of the unit; the unit load input signal is connected with the input of the second correction module 18 and used for correcting the valve opening coefficient according to the unit load; the output of the first correction module 17 and the output of the second correction module 18 are respectively connected with the input of a multiplier 19 and used for calculating the actual opening instruction of the valve; the multiplier 19 outputs a valve opening command to be connected to the second regulator valve 10.
An auxiliary frequency modulation method based on a water side flow splitting mode of a low-pressure heater comprises the following steps:
when the unit normally operates with a load, the condensate pump 1 operates, condensate water sequentially passes through the first regulating valve 7, the first stop valve 2, the first low-pressure heater 3, the second low-pressure heater 4, the third low-pressure heater 5 and the second stop valve 6 to be fed to the deaerator, the low-pressure heater is pumped on the steam extraction side, the condensate water bypass third stop valve 9 and the fourth stop valve 10 are in an open state, and the condensate water bypass second regulating valve 10 receives an output instruction of the condensate water frequency modulation control unit 15;
when the rotation speed of the unit changes, the rotation speed input signal and the rated rotation speed are calculated through the subtracter 16 to obtain a rotation speed deviation signal, the rotation speed deviation signal is connected to the first correction module 17, and the first correction module 17 calculates the theoretical opening instruction of the second regulating valve 10 according to the rotation speed deviation; meanwhile, a unit load input signal is connected to the second correction module 18, and a valve correction coefficient is calculated through the second correction module 18 according to the actual load interval of the unit; the theoretical command signal of the second regulating valve and the valve correction coefficient are connected to the input of the multiplier 19, the opening signal of the second regulating valve 10 is obtained through calculation by the multiplier 19, and the opening of the second regulating valve 10 is rapidly changed. When the frequency of the power grid is reduced to exceed a primary frequency modulation dead zone, the second regulating valve 10 is quickly opened, and the flow of condensate water passing through the low-pressure heater is instantly reduced, so that the steam extraction quantity at the steam side of the low-pressure heater is reduced, the steam quantity of the work of the steam turbine is increased, the load is quickly increased, and the unit can quickly respond to the primary frequency modulation requirement.
In addition, during actual operation, the total condensate water flow is adjusted through the first adjusting valve 7, the condensate water flow entering the heater is adjusted through the second adjusting valve 10, the first adjusting valve 7 can be basically kept unchanged during primary frequency modulation action, the liquid level of the deaerator and the condensate pump outlet force are kept unchanged, and system disturbance is reduced.
In addition, the first shut-off valve 2 and the second shut-off valve 6 can be opened during the commissioning of the group and closed during the removal of the low-pressure heater.
In addition, the third stop valve 9 and the fourth stop valve 11 can be opened when the unit normally operates and closed when the second regulating valve 10 fails, and the function of on-line isolation and maintenance of the regulating valves is achieved.
Claims (8)
1. The utility model provides an auxiliary frequency modulation system based on low pressure feed water heater water side reposition of redundant personnel mode which characterized in that, includes condensate pump (1), condensate pump (1) is linked together with first governing valve (7) entry, and first governing valve (7) export female pipe divides two the tunnel: the first path is communicated with a water side inlet of a first low-pressure heater (3), a water side outlet of the first low-pressure heater (3) is communicated with a water side inlet of a second low-pressure heater (4), a water side outlet of the second low-pressure heater (4) is communicated with a water side inlet of a third low-pressure heater (5), a water side outlet of the third low-pressure heater (5) is communicated with an inlet of a deaerator (8), the second path is communicated with an inlet of a second regulating valve (10), and an outlet of the second regulating valve (10) is communicated with an inlet of the deaerator (8);
the second regulating valve (10) is connected with an output opening signal of the condensed water frequency modulation control unit (15).
2. An auxiliary frequency modulation system based on a water side diversion mode of a low-pressure heater as claimed in claim 1, characterized in that a first stop valve (2) is arranged between the outlet of the first regulating valve (7) and the water side inlet of the first low-pressure heater (3).
3. The auxiliary frequency modulation system based on the water side flow dividing mode of the low-pressure heater is characterized in that a second stop valve (6) is arranged between the water side outlet of the third low-pressure heater (5) and the inlet of the deaerator (8).
4. The auxiliary frequency modulation system based on the water side flow dividing mode of the low-pressure heater is characterized in that a third stop valve (9) and a fourth stop valve (11) are arranged in front of and behind the second regulating valve (10), a third stop valve input pipeline is connected to a pipeline between the first regulating valve (7) and the first stop valve (2), and a fourth stop valve (11) output pipeline is connected to a pipeline between the second stop valve (6) and an inlet of the deaerator (8).
5. The auxiliary frequency modulation system based on the water side diversion mode of the low-pressure heater as claimed in claim 1, wherein the steam side inlet of the first low-pressure heater (3) is communicated with a first steam extraction pipeline (12) of the steam turbine, the steam side inlet of the second low-pressure heater (4) is communicated with a second steam extraction pipeline (13) of the steam turbine, and the steam side inlet of the third low-pressure heater (5) is communicated with a third steam extraction pipeline (14) of the steam turbine.
6. An auxiliary frequency modulation system based on a low-pressure heater water side flow-splitting manner according to claim 1, characterized in that the condensed water frequency modulation control unit (15) is realized by DCS system control logic.
7. The auxiliary frequency modulation system based on the water side diversion mode of the low-pressure heater according to claim 1, wherein the condensed water frequency modulation control unit (15) comprises a subtracter (16), a first correction module (17), a second correction module (18) and a multiplier (19);
the input of the subtracter (16) is connected with a rotating speed input signal, and the rotating speed input signal is used for calculating the rotating speed deviation of the unit; the output of the subtracter (16) is connected with the input of the first correction block (17), and the subtracter (16) is used for converting the theoretical opening value of the second regulating valve (10) according to the deviation of the rotating speed of the unit; the second correction module (18) is connected with a unit load input signal in an input mode, and the unit load input signal is used for correcting the valve opening coefficient according to the unit load; the output of the first correction module (17) and the output of the second correction module (18) are respectively connected with the input of a multiplier (19) and used for calculating the actual opening instruction of the valve, and the multiplier (19) outputs the valve opening instruction to be connected with the second regulating valve (10).
8. The operation method of the auxiliary frequency modulation system based on the water side flow splitting mode of the low-pressure heater is characterized by comprising the following steps of;
in the machine set load operation process, a condensate pump (1) operates, condensate water sequentially passes through a first regulating valve (7), a first stop valve (2), a first low-pressure heater (3), a second low-pressure heater (4), a third low-pressure heater (5) and a second stop valve (6) and is fed to a deaerator (8), steam is pumped from a steam extraction side of the low-pressure heater, the condensate water bypasses the third stop valve (9) and a fourth stop valve (10) to be in an open state, and the condensate water bypass second regulating valve (10) receives an output instruction of a condensate frequency modulation control unit (15);
when the rotating speed of the unit changes, a rotating speed input signal and the rated rotating speed are calculated through a subtracter (16) to obtain a rotating speed deviation signal, the rotating speed deviation signal is connected to a first correction module (17), and the first correction module (17) calculates a theoretical opening instruction of a second regulating valve (10) according to the rotating speed deviation; meanwhile, a unit load input signal is connected to a second correction module (18), and a valve correction coefficient is calculated through the second correction module (18) according to the actual load interval of the unit; the theoretical instruction signal of the second regulating valve and the valve correction coefficient are connected to the input of a multiplier (19), the opening degree signal of the second regulating valve (10) is obtained through calculation of the multiplier (19), and the opening degree of the second regulating valve (10) is rapidly changed; when the frequency of the power grid is reduced to exceed a primary frequency modulation dead zone, the second regulating valve (10) is quickly opened, and the flow of condensate water passing through the low-pressure heater is instantly reduced, so that the steam extraction quantity at the steam side of the low-pressure heater is reduced, the steam quantity of the steam turbine acting is increased, the load is quickly increased, and the unit can quickly respond to the primary frequency modulation requirement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110115802.7A CN112761746A (en) | 2021-01-28 | 2021-01-28 | Auxiliary frequency modulation system and method based on water side flow splitting mode of low-pressure heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110115802.7A CN112761746A (en) | 2021-01-28 | 2021-01-28 | Auxiliary frequency modulation system and method based on water side flow splitting mode of low-pressure heater |
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| CN202110115802.7A Pending CN112761746A (en) | 2021-01-28 | 2021-01-28 | Auxiliary frequency modulation system and method based on water side flow splitting mode of low-pressure heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294220A (en) * | 2021-06-04 | 2021-08-24 | 神华神东电力有限责任公司 | Load adjusting method and device for generator set |
| CN115324674A (en) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | System for frequency conversion condensate pump of thermal power generating unit participates in power grid frequency adjustment |
| CN115324675A (en) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | Control method for adjusting power grid frequency of thermal power generating unit based on variable-frequency condensate pump |
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2021
- 2021-01-28 CN CN202110115802.7A patent/CN112761746A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294220A (en) * | 2021-06-04 | 2021-08-24 | 神华神东电力有限责任公司 | Load adjusting method and device for generator set |
| CN115324674A (en) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | System for frequency conversion condensate pump of thermal power generating unit participates in power grid frequency adjustment |
| CN115324675A (en) * | 2022-07-25 | 2022-11-11 | 广西电网有限责任公司电力科学研究院 | Control method for adjusting power grid frequency of thermal power generating unit based on variable-frequency condensate pump |
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