CN115276510A - Condensate pump high-voltage inverter system - Google Patents
Condensate pump high-voltage inverter system Download PDFInfo
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- CN115276510A CN115276510A CN202210947247.9A CN202210947247A CN115276510A CN 115276510 A CN115276510 A CN 115276510A CN 202210947247 A CN202210947247 A CN 202210947247A CN 115276510 A CN115276510 A CN 115276510A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 230000015271 coagulation Effects 0.000 claims description 6
- 238000005345 coagulation Methods 0.000 claims description 6
- 238000011022 operating instruction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Classifications
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- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- 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
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a condensate pump high-voltage frequency converter system and a lifting output method thereof. The condensing pump frequency converter is changed from a one-to-two operation mode into a one-to-one operation mode, so that the frequency converters are mutually independent, when any one frequency converter of a condensing pump motor operates, the other frequency converter can be put into frequency conversion standby, the problem that the time for starting the standby frequency converter in a combined mode when the condensing pump frequency converter fails is effectively solved, the high-voltage frequency converter is changed from one-key starting to two-key starting, namely the DCS sends a pulse starting instruction twice, so that the frequency converter is in a hot standby state after charging is completed, the DCS sends a second starting instruction at the moment, the frequency converter can instantly output active power to operate with a pump, and the stable operation of a condensing water system is ensured; through the pump of congealing that the hot reserve of frequency conversion starts, the power consumption loss that has reduced to congeal the pump and brought and to the wearing and tearing maintenance cost of motor, the pump body, export electrically operated gate, solved congeal the problem that the pump is regularly power frequency start to the condensate system impact and congeal the problem of when pump converter trouble allies oneself with the standby converter time overlength of starting.
Description
Technical Field
The invention relates to a frequency converter system, in particular to a condensate pump high-voltage frequency converter system and a force lifting method thereof, and belongs to the technical field of condensate systems.
Background
When a condensate pump motor is started at power frequency in a linked mode, the condensate pump motor has large impact on the condensate system, water and leakage at the outlet flange of the condensate pump are easily caused, air is absorbed at the flange after the power frequency pump is stopped, the vacuum of the condenser is rapidly reduced, and a unit is not stopped; when the condensate pump motor can not output active power due to the overlong starting time of the frequency converter, the pressure of condensate water is reduced, the flow of a water supply system and the water level of a deaerator are reduced, the low protection action of the flow of an inlet of an economizer, the MFT of a boiler and the non-stop of a unit can be caused, and the safe and stable operation of the unit is seriously influenced.
Disclosure of Invention
The present invention is directed to a condensate pump high-voltage inverter system for solving at least one of the above problems.
The invention achieves the above purpose through the following technical scheme: a condensate pump high-voltage inverter system comprises an inverter assembly; the frequency converter assembly comprises a VFD1 frequency converter and a VFD2 frequency converter which are independently arranged;
an input circuit of the VFD1 frequency converter is connected with a section A of a high-voltage power supply in series, an output circuit of the VFD1 frequency converter is connected with an M1 condensate pump motor in series, an input circuit of the VFD1 frequency converter is connected with a QF1 circuit breaker and a QS1 isolating switch in series, an output circuit of the VFD1 frequency converter is connected with a QS2 isolating switch in series, and a DXN1 electrified display and an FV1 resistance-capacitance absorber which are arranged in parallel with the VFD1 frequency converter are connected between the QS1 isolating switch and the QS2 isolating switch in series;
the input line and the high voltage power supply B section of VFD2 converter carry out the series connection, the output line series connection of VFD2 converter has M2 to congeal the pump motor, series connection QF2 circuit breaker and QS3 isolator on the input line of VFD2 converter, series connection has QS4 isolator on the output line of VFD2 converter, it has DXN2 electrified display and FV2 resistance-capacitance absorber that are parallel arrangement with the VFD2 converter to establish ties between QS3 isolator and the QS4 isolator.
As a still further scheme of the invention: the FV1 resistance-capacitance absorber and the FV2 resistance-capacitance absorber are connected with the resistor in parallel and then grounded.
As a still further scheme of the invention: the DXN1 electrified display and the DXN2 electrified display are connected with the bulb in series and then grounded.
As a still further scheme of the invention: the QS1 isolating switch and the QS3 isolating switch are both single-pole single-throw isolating switches, and the QS2 isolating switch and the QS4 isolating switch are both single-pole double-throw isolating switches.
As a still further scheme of the invention: and the QF1 circuit breaker and the QF2 circuit breaker are both user high-voltage switches.
As a still further scheme of the invention: when the M1 condensate pump motor operates, the following three working conditions are included:
when the frequency conversion is operated, specifically include:
after the QF1 circuit breaker is determined to be in an open position, the QS1 isolating switch is switched on, the QS2 isolating switch is connected to the frequency conversion circuit, the VFD1 frequency converter sends a high-voltage switch switching-on allowing signal, the QF1 circuit breaker is switched on manually, then a starting command is sent to the VFD1 frequency converter, and the VFD1 frequency converter drives the M1 coagulation pump motor to operate in a frequency conversion mode after charging is completed;
when the frequency conversion stops operating, specifically include:
sending a stop command to the VFD1 frequency converter, automatically reducing the running frequency of the VFD1 frequency converter, and manually breaking the QF1 circuit breaker after the running frequency reaches 0 Hz;
when switching power frequency operation, specifically include:
and (3) connecting the QS2 isolating switch to a power frequency circuit, and operating the M1 condensate pump motor at power frequency.
As a still further scheme of the invention: when the M2 condensate pump motor operates, the following three working conditions are included:
when the frequency conversion is operated, specifically include:
firstly, after determining that the QF2 circuit breaker is in an open position, closing a QS3 isolating switch, connecting a QS4 isolating switch into a frequency conversion circuit, sending a high-voltage switch closing permission signal by a VFD2 frequency converter, manually closing the QF2 circuit breaker, then sending a starting command to the VFD2 frequency converter, and driving an M2 coagulation pump motor to operate in a frequency conversion manner after the VFD2 frequency converter is charged;
when the frequency conversion stops operating, specifically include:
sending a stop command to the VFD2 frequency converter, automatically reducing the running frequency of the VFD2 frequency converter, and manually breaking the QF2 circuit breaker after the running frequency reaches 0 Hz;
when switching power frequency operation, specifically include:
and (3) connecting a QS4 isolating switch into a power frequency circuit, and operating the M2 condensate pump motor at power frequency.
A condensate pump high-voltage frequency converter system comprises the following steps of:
(1) adding a DO point 'charging instruction', 'operating instruction', 'hot standby exit' to the DCS of the frequency converter assembly, adding a DI point 'request operation' frequency conversion feedback signal to the DCS, and changing one-key starting of the frequency converter assembly into two-key starting, namely sending a twice pulse starting instruction to the DCS;
(2) after a start command is sent by the DCS for the first time, the VFD1 frequency converter is charged firstly, after the charging is finished for 45 seconds, the VFD1 frequency converter sends a 'request operation' feedback signal to the DCS, and the VFD1 frequency converter is in a 'hot standby' state;
(3) the DCS sends a starting command for the second time, and the VFD2 frequency converter outputs active power instantly to drive the M2 condensate pump motor to operate;
(4) when the unit normal operating mode, VFD2 converter frequency conversion operation, VFD1 converter charge and accomplish and be in "hot standby" state, if the VFD2 converter in service breaks down this moment, the VFD1 converter chain start that is in "hot standby" state, VFD1 converter output active power in the twinkling of an eye drives M1 and congeals pump motor operation, guarantees condensate system steady operation.
The invention has the beneficial effects that: the condensing pump frequency converter is changed from a one-to-two operation mode into a one-to-one operation mode, so that the frequency converters are mutually independent, when any one frequency converter of a condensing pump motor operates, the other frequency converter can be put into frequency conversion standby, the problem that the time for starting the standby frequency converter in a combined mode when the condensing pump frequency converter fails is effectively solved, the high-voltage frequency converter is changed from one-key starting to two-key starting, namely the DCS sends a pulse starting instruction twice, so that the frequency converter is in a hot standby state after charging is completed, the DCS sends a second starting instruction at the moment, the frequency converter can instantly output active power to operate with a pump, and the stable operation of a condensing water system is ensured; through starting the hot reserve pump of congealing of frequency conversion, reduced the power consumption loss that the pump brought and to the wearing and tearing maintenance cost of motor, pump body, export electrically operated gate congeal, solved congeal the problem that the periodic power frequency of pump starts the impact to the condensate system, solved when congealing pump converter trouble jointly start with the problem of converter time overlength.
Drawings
FIG. 1 is a schematic diagram of the circuit structure of the present invention.
In the figure: 1. the device comprises a VFD1 frequency converter, 2 and VFD2 frequency converters, 3 and QF1 circuit breakers, 4 and QS1 isolating switches, 5 and QF2 circuit breakers, 6 and QS3 isolating switches, 7 and M1 pump condensing motors, 8 and M2 pump condensing motors, 9 and QS2 isolating switches, 10 and QS4 isolating switches, 11 and DXN1 electrified displays, 12 and FV1 resistance-capacitance absorbers, 13 and DXN2 electrified displays, and 14 and FV2 resistance-capacitance absorbers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, a condensate pump high-voltage inverter system includes an inverter assembly; the frequency converter assembly comprises a VFD1 frequency converter 1 and a VFD2 frequency converter 2 which are independently arranged;
an input circuit of the VFD1 frequency converter 1 is connected with a high-voltage power supply A section in series, an output circuit of the VFD1 frequency converter 1 is connected with an M1 condensate pump motor 7 in series, an input circuit of the VFD1 frequency converter 1 is connected with a QF1 circuit breaker 3 and a QS1 isolating switch 4 in series, an output circuit of the VFD1 frequency converter 1 is connected with a QS2 isolating switch 9 in series, and a DXN1 electrified display 11 and an FV1 resistance-capacitance absorber 12 which are arranged in parallel with the VFD1 frequency converter 1 are connected between the QS1 isolating switch 4 and the QS2 isolating switch 9 in series;
the input circuit and the high voltage power supply B section of VFD2 converter 2 carry out series connection, the output circuit of VFD2 converter 2 is established ties and is had M2 pump motor 8, series connection QF2 circuit breaker 5 and QS3 isolator 6 on the input circuit of VFD2 converter 2, series connection QS4 isolator 10 on the output circuit of VFD2 converter 2, it has DXN2 live-line display 13 and FV2 resistance-capacitance absorber 14 that are parallel arrangement to establish ties between QS3 isolator 6 and QS4 isolator 10 with VFD2 converter 2.
In the embodiment of the invention, the FV1 resistance-capacitance absorber 12 and the FV2 resistance-capacitance absorber 14 are connected in parallel with a resistor and then grounded.
In the embodiment of the invention, the DXN1 live display 11 and the DXN2 live display 13 are both connected in series with the bulb and then grounded.
In the embodiment of the present invention, QS1 isolator switch 4 and QS3 isolator switch 6 are both single-pole single-throw isolators, and QS2 isolator switch 9 and QS4 isolator switch 10 are both single-pole double-throw isolators.
In the embodiment of the invention, the QF1 circuit breaker 3 and the QF2 circuit breaker 5 are both user high-voltage switches.
Example two
As shown in fig. 1, a condensate pump high-voltage inverter system includes an inverter assembly; the frequency converter assembly comprises a VFD1 frequency converter 1 and a VFD2 frequency converter 2 which are independently arranged;
an input line of the VFD1 frequency converter 1 is connected with a high-voltage power supply A section in series, an output line of the VFD1 frequency converter 1 is connected with an M1 condensate pump motor 7 in series, an input line of the VFD1 frequency converter 1 is connected with a QF1 circuit breaker 3 and a QS1 isolating switch 4 in series, an output line of the VFD1 frequency converter 1 is connected with a QS2 isolating switch 9 in series, and a DXN1 electrified display 11 and an FV1 resistance-capacitance absorber 12 which are arranged in parallel with the VFD1 frequency converter 1 are connected between the QS1 isolating switch 4 and the QS2 isolating switch 9 in series;
the input circuit and the high voltage power supply B section of VFD2 converter 2 carry out series connection, the output circuit of VFD2 converter 2 is established ties and is had M2 pump motor 8, series connection QF2 circuit breaker 5 and QS3 isolator 6 on the input circuit of VFD2 converter 2, series connection QS4 isolator 10 on the output circuit of VFD2 converter 2, it has DXN2 live-line display 13 and FV2 resistance-capacitance absorber 14 that are parallel arrangement to establish ties between QS3 isolator 6 and QS4 isolator 10 with VFD2 converter 2.
In the embodiment of the present invention, when the M1 coagulation pump motor 7 operates, the following three conditions are included:
when the frequency conversion is operated, specifically include:
firstly, after determining that a QF1 circuit breaker 3 is in an open position, switching on a QS1 isolating switch 4, switching in a QS2 isolating switch 9 to a frequency conversion circuit, sending a high-voltage switch switching-on permission signal by a VFD1 frequency converter 1, manually switching on the QF1 circuit breaker 3, then sending a starting command to the VFD1 frequency converter 1, and driving an M1 coagulation pump motor 7 to perform variable-frequency operation after the VFD1 frequency converter 1 is charged;
when the frequency conversion stops operating, specifically include:
sending a stop command to the VFD1 frequency converter 1, automatically reducing the running frequency of the VFD1 frequency converter 1, and manually breaking the QF1 circuit breaker 3 after the running frequency reaches 0 Hz;
when switching power frequency operation, specifically include:
and (3) connecting the QS2 isolating switch 9 into a power frequency circuit, and operating the M1 condensate pump motor 7 at power frequency.
In the embodiment of the present invention, when the M2 condensate pump motor 8 operates, the following three conditions are included:
when the frequency conversion is operated, specifically include:
firstly, after determining that the QF2 circuit breaker 5 is at an open position, switching on the QS3 isolating switch 6, switching in the QS4 isolating switch 10 to a frequency conversion circuit, sending a high-voltage switch switching-on permission signal by the VFD2 frequency converter 2, manually switching on the QF2 circuit breaker 5, then sending a starting command to the VFD2 frequency converter 2, and driving the M2 coagulation pump motor 8 to perform frequency conversion operation after the VFD2 frequency converter 2 is charged;
when the frequency conversion stops operating, specifically include:
sending a stop command to the VFD2 frequency converter 2, automatically reducing the running frequency of the VFD2 frequency converter 2, and manually breaking the QF2 circuit breaker 5 after the running frequency reaches 0 Hz;
when switching power frequency operation, specifically include:
the QS4 isolating switch 10 is connected into a power frequency circuit, and the M2 condensate pump motor 8 runs at power frequency.
EXAMPLE III
A condensate pump high-voltage frequency converter system comprises the following steps of:
(1) adding a DO point 'charging instruction', 'operating instruction', 'hot standby exit' to the DCS of the frequency converter assembly, adding a DI point 'request operation' frequency conversion feedback signal to the DCS, and changing one-key starting of the frequency converter assembly into two-key starting, namely sending a twice pulse starting instruction to the DCS;
(2) after a start command is sent by the DCS for the first time, the VFD1 frequency converter 1 is charged firstly, after the charging is finished for 45 seconds, the VFD1 frequency converter 1 sends a feedback signal of 'operation request' to the DCS, and the VFD1 frequency converter 1 is in a 'hot standby' state;
(3) a start command is sent by the DCS for the second time, and the VFD2 frequency converter 2 outputs active power instantly to drive the M2 condensate pump motor 8 to operate;
(4) when the unit normal operating mode, 2 frequency conversion operations of VFD2 converter, VFD1 converter 1 charge and accomplish and be in "hot standby" state, if the VFD2 converter 2 in service breaks down this moment, be in the chain start of 1 converter of VFD1 converter of "hot standby" state, VFD1 converter 1 outputs active power in the twinkling of an eye and drives M1 and congeal pump motor 7 and move, guarantees condensate system steady operation.
The working principle is as follows: change high-voltage inverter into two key formula starts by one key formula start, DCS sends twice pulse start command promptly, makes the converter subassembly charge and is in hot standby state after accomplishing, and the second start command is sent out to DCS this moment, and the converter can output active power area pump operation in the twinkling of an eye, guarantees condensate system steady operation.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (8)
1. The utility model provides a condensate pump high-voltage inverter system which characterized in that: comprises a frequency converter component; the frequency converter assembly comprises a VFD1 frequency converter (1) and a VFD2 frequency converter (2) which are independently arranged;
an input circuit of the VFD1 frequency converter (1) is connected with a high-voltage power supply A section in series, an output circuit of the VFD1 frequency converter (1) is connected with an M1 condensate pump motor (7) in series, a QF1 circuit breaker (3) and a QS1 isolating switch (4) are connected with an input circuit of the VFD1 frequency converter (1) in series, a QS2 isolating switch (9) is connected with an output circuit of the VFD1 frequency converter (1) in series, and a DXN1 electrified display (11) and an FV1 capacitance-resistance absorber (12) which are arranged in parallel with the VFD1 frequency converter (1) are connected between the QS1 isolating switch (4) and the QS2 isolating switch (9) in series;
the input line and the high voltage power supply B section of VFD2 converter (2) carry out series connection, the output line of VFD2 converter (2) is established ties and is had M2 to congeal pump motor (8), series connection QF2 circuit breaker (5) and QS3 isolator (6) on the input line of VFD2 converter (2), it has QS4 isolator (10) to establish ties on the output line of VFD2 converter (2), it has DXN2 electrified display (13) and FV2 resistance-capacitance absorber (14) that are parallel arrangement with VFD2 converter (2) to establish ties between QS3 isolator (6) and QS4 isolator (10).
2. The condensate pump high-voltage inverter system according to claim 1, wherein: the FV1 resistance-capacitance absorber (12) and the FV2 resistance-capacitance absorber (14) are connected with the resistor in parallel and then grounded.
3. The condensate pump high-voltage inverter system according to claim 1, wherein: the DXN1 electrified display (11) and the DXN2 electrified display (13) are connected with the bulb in series and then grounded.
4. The condensate pump high-voltage inverter system according to claim 1, wherein: the QS1 isolating switch (4) and the QS3 isolating switch (6) are both single-pole single-throw isolating switches, and the QS2 isolating switch (9) and the QS4 isolating switch (10) are both single-pole double-throw isolating switches.
5. The condensate pump high-voltage inverter system according to claim 1, wherein: and the QF1 circuit breaker (3) and the QF2 circuit breaker (5) are both user high-voltage switches.
6. The condensate pump high-voltage inverter system according to claim 1, wherein: when the M1 condensate pump motor (7) operates, the following three working conditions are included:
when the frequency conversion is operated, specifically include:
firstly, after determining that a QF1 circuit breaker (3) is in an open position, switching on a QS1 isolating switch (4), switching in a QS2 isolating switch (9) to a frequency conversion circuit, sending a high-voltage switch switching-on allowing signal by a VFD1 frequency converter (1), manually switching on the QF1 circuit breaker (3), then sending a starting command to the VFD1 frequency converter (1), and driving an M1 coagulation pump motor (7) to perform variable-frequency operation after the VFD1 frequency converter (1) is charged;
when the frequency conversion stops operating, specifically include:
sending a stop command to the VFD1 frequency converter (1), automatically reducing the running frequency of the VFD1 frequency converter (1), and manually breaking the QF1 circuit breaker (3) after the running frequency reaches 0 Hz;
when switching power frequency operation, specifically include:
the QS2 isolating switch (9) is connected to a power frequency circuit, and the M1 condensate pump motor (7) runs at power frequency.
7. The condensate pump high-voltage inverter system according to claim 1, wherein: when the M2 condensate pump motor (8) operates, the following three working conditions are included:
when the frequency conversion is operated, the method specifically comprises the following steps:
firstly, after determining that a QF2 circuit breaker (5) is at an open position, switching on a QS3 isolating switch (6), switching in a QS4 isolating switch (10) to a frequency conversion circuit, sending a high-voltage switch switching-on allowing signal by a VFD2 frequency converter (2), manually switching on the QF2 circuit breaker (5), then sending a starting command to the VFD2 frequency converter (2), and driving an M2 condensate pump motor (8) to operate in a frequency conversion mode after the VFD2 frequency converter (2) is charged;
when the frequency conversion stops operating, specifically include:
sending a stop command to the VFD2 frequency converter (2), automatically reducing the running frequency of the VFD2 frequency converter (2), and manually breaking the QF2 circuit breaker (5) after the running frequency reaches 0 Hz;
when switching power frequency operation, specifically include:
and a QS4 isolating switch (10) is connected to a power frequency circuit, and an M2 condensate pump motor (8) runs at power frequency.
8. A method for improving output of a condensate pump high-voltage frequency converter system is characterized by comprising the following steps: the output improving method comprises the following steps:
(1) adding a DO point 'charging instruction', 'operating instruction', 'hot standby exit' to the DCS of the frequency converter assembly, adding a DI point 'request operation' frequency conversion feedback signal to the DCS, and changing one-key starting of the frequency converter assembly into two-key starting, namely sending a twice pulse starting instruction to the DCS;
(2) after a start command is sent by the DCS for the first time, the VFD1 frequency converter (1) is charged firstly, after the charging is finished for 45 seconds, the VFD1 frequency converter (1) sends a feedback signal of 'operation request' to the DCS, and the VFD1 frequency converter (1) is in a 'hot standby' state;
(3) a start command is sent by the DCS for the second time, and the VFD2 frequency converter (2) outputs active power instantly to drive the M2 condensate pump motor (8) to operate;
(4) when the unit normal operating mode, VFD2 converter (2) frequency conversion operation, VFD1 converter (1) charge and accomplish and be in "hot standby" state, if VFD2 converter (2) in service breaks down this moment, VFD1 converter (1) frequency converter chain start in "hot standby" state, VFD1 converter (1) output active power in the twinkling of an eye drives M1 and congeals pump motor (7) operation, guarantees condensate system steady operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947247.9A CN115276510A (en) | 2022-08-09 | 2022-08-09 | Condensate pump high-voltage inverter system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947247.9A CN115276510A (en) | 2022-08-09 | 2022-08-09 | Condensate pump high-voltage inverter system |
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| CN115276510A true CN115276510A (en) | 2022-11-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014043800A (en) * | 2012-08-27 | 2014-03-13 | Ebara Corp | Pump control device |
| CN212572439U (en) * | 2020-06-15 | 2021-02-19 | 北京合康新能变频技术有限公司 | High-voltage frequency converter control system |
| CN213602571U (en) * | 2020-07-20 | 2021-07-02 | 雅泰思(深圳)技术有限公司 | Circulating water pump variable frequency speed control system |
| CN216625619U (en) * | 2022-01-20 | 2022-05-27 | 广东大唐国际潮州发电有限责任公司 | Condensate pump high-voltage inverter system |
-
2022
- 2022-08-09 CN CN202210947247.9A patent/CN115276510A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014043800A (en) * | 2012-08-27 | 2014-03-13 | Ebara Corp | Pump control device |
| CN212572439U (en) * | 2020-06-15 | 2021-02-19 | 北京合康新能变频技术有限公司 | High-voltage frequency converter control system |
| CN213602571U (en) * | 2020-07-20 | 2021-07-02 | 雅泰思(深圳)技术有限公司 | Circulating water pump variable frequency speed control system |
| CN216625619U (en) * | 2022-01-20 | 2022-05-27 | 广东大唐国际潮州发电有限责任公司 | Condensate pump high-voltage inverter system |
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