CN108873962A - For controlling the power-economizing method of GTCC power plant Main Transformer Cooler - Google Patents

For controlling the power-economizing method of GTCC power plant Main Transformer Cooler Download PDF

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Publication number
CN108873962A
CN108873962A CN201811065228.3A CN201811065228A CN108873962A CN 108873962 A CN108873962 A CN 108873962A CN 201811065228 A CN201811065228 A CN 201811065228A CN 108873962 A CN108873962 A CN 108873962A
Authority
CN
China
Prior art keywords
cooler
mode
work
main transformer
gcb
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
Application number
CN201811065228.3A
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Chinese (zh)
Inventor
郑江森
余芳
罗德庭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN GUANGQIAN ELECTRIC POWER CO Ltd
Original Assignee
SHENZHEN GUANGQIAN ELECTRIC POWER CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHENZHEN GUANGQIAN ELECTRIC POWER CO Ltd filed Critical SHENZHEN GUANGQIAN ELECTRIC POWER CO Ltd
Priority to CN201811065228.3A priority Critical patent/CN108873962A/en
Publication of CN108873962A publication Critical patent/CN108873962A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/19Control of temperature characterised by the use of electric means
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • H01F27/085Cooling by ambient air
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • H01F27/10Liquid cooling
    • H01F27/12Oil cooling

Abstract

The present invention relates to the power-economizing methods for controlling GTCC power plant Main Transformer Cooler, it is characterised in that:Several groups cooler is connected in GTCC power plant main transformer, five groups of control models, including " work " mode, " auxiliary " mode, " spare " mode, " stopping " mode and " work 1 " mode are set in the control mode of the coal unit of the GTCC power plant;Every group of control model corresponds to one group or two groups or more cooler;" work 1 " mode opens/stops state according to the generator of GTCC power plant, specifically according to the/"on" position of dividing of the control switch GCB of the generator, the operating status of control and the cooler of " work 1 " pattern association, to form energy-saving control loop;When the control switch GCB closes a floodgate, the cooler with " work 1 " pattern association is operation operating mode, and when generator parallel off is shut down, the cooler with " work 1 " pattern association is the mode that stops working.Have the characteristics that structure is simple, reduces energy consumption, extends cooler service life.

Description

For controlling the power-economizing method of GTCC power plant Main Transformer Cooler
Technical field
The present invention relates to a kind of power-economizing methods of Main Transformer Cooler, more particularly, to one kind for controlling GTCC power plant The power-economizing method of Main Transformer Cooler.Belong to power generation industries and ancillary equipment technology.
Background technique
Currently, large-scale GTCC power plant belongs to new type enterprise in China, there is no mature for the design installation of many auxiliary devices Experience is both referred to traditional coal-burning power plant and carries out.Due to most of coal-burning power plants in generator outage main transformer also with Stoppage in transit, do not have GTCC power plant generator stoppage in transit after, main transformer falls power transmission for the function of Ran Yao power plant electricity consumption, does not deposit The underload long-play the case where, therefore traditional coal-burning power plant is without the concern for the actual load of main transformer, as long as main Transformer station high-voltage side bus, cooler are exactly a changeless operational mode.
But for large-scale GTCC power plant, the generator capacity of equipment is larger, such as Guangdong Province of China combustion engine electricity Factory is equipped with the generator that more capacity are 482MVA, and every generator is air-cooled with the forced oil-circulation that 1 capacity is 480MVA Main transformer, every main transformer have 5 groups of coolers, and every group of cooler is made of 3 2.2kW motors and 1 3kW oil-immersed pump. The cooler control mode of its main transformer has just directlyed adopt the design of coal-burning power plant, no matter the actual load of main transformer is more Greatly, cooler is exactly a changeless operational mode, and there are the following problems for this mode:Power consumption is big, cooler Service life is short and the heavy workload of plant maintenance.
Summary of the invention
The purpose of the present invention is the cooler power consumption in order to solve the medium-and-large-sized GTCC power plant main transformer of the prior art Greatly, the problems such as cooler service life is short and plant maintenance heavy workload provides a kind of for controlling GTCC power plant main transformer The power-economizing method of cooler.It is simple with structure, reduce energy consumption, extend the substantive distinguishing features outstanding such as cooler service life and Significant technological progress.
The purpose of the present invention can be reached by adopting the following technical scheme that:
For controlling the power-economizing method of GTCC power plant Main Transformer Cooler, it is characterised in that:
1) several groups cooler, the control mode of the coal unit of the GTCC power plant are connected in GTCC power plant main transformer Five groups of control models of middle setting, including " work " mode, " auxiliary " mode, " spare " mode, " stopping " mode and " work 1 " mould Formula;Every group of control model corresponds to one group or two groups or more cooler;" work 1 " mode is according to the generator of GTCC power plant State is opened/stops, specifically according to the/"on" position of dividing of the control switch GCB of the generator, control and " work 1 " mould The operating status of the associated cooler of formula, to form energy-saving control loop;
2) when the control switch GCB closes a floodgate, the cooler with " work 1 " pattern association is operation operating mode, should Cooler brings into operation;When generator parallel off is shut down, the control switch GCB is disconnected, the cooler with " work 1 " pattern association For the mode of stopping working, the cooler is out of service, formed the cooler model- following control switch GCB point/"on" position and Stopping/operation operating mode;
3) when generator booting is grid-connected, control switch GCB closes a floodgate, and starts to transport with the cooler of " work 1 " pattern association Row;When generator parallel off is shut down, control switch GCB is disconnected, out of service with the cooler of " work 1 " pattern association;Form master The safe operation state of transformer is saved so that extra cooler is stopped transport when main transformer is with station service underrun Operating cost.
The purpose of the present invention can also be reached by adopting the following technical scheme that:
Further, the main transformer is connected with five groups of coolers, and in order to ensure reliable cooling, two groups of coolers are set It is placed in that " work 1 " mode, one group of cooler is placed in " auxiliary " mode, one group of cooler is set in " work " mode, one group of cooler In " spare " mode;Or one group of cooler is placed in " work " mode, two groups of coolers are placed in " work 1 " mode, one group it is cold But device is placed in " auxiliary " mode, one group of cooler is placed in " spare " mode;
1) all five groups of coolers will be placed in " stopping " mode when the main transformer is in inspecting state;
2) when main transformer puts into operation state, the cooler for being placed in " work " mode puts into operation at once, and protects always Longtime running is held, until main transformer is stopped transport;When the oil temperature of main transformer or load current are greater than the set value, it is placed in The cooler of " auxiliary mode " puts into operation, until main transformer oil temperature or load current be lower than setting value when stop with it is " auxiliary Help mode " operation of associated cooler;" spare " mode is placed in when any group of Cooler Fault in operation then starts automatically Cooler;When generator booting is grid-connected, GCB closes a floodgate, and the cooler for being placed in " work 1 " mode brings into operation;When generator solution Shutdown is split, the cooler for after GCB is disconnected, being placed in " work 1 " mode is out of service.
Further, the main transformer is forced oil-circulation air-cooled transformer.
The present invention has following substantive distinguishing features outstanding and significant technological progress:
1, the present invention is due to being arranged five groups of control models, including " work " in the control mode of the coal unit of GTCC power plant Mode, " auxiliary " mode, " spare " mode, " stopping " mode and " work 1 " mode;Every group of control model is one group or two groups corresponding The above cooler;" work 1 " mode opens/stops according to the generator of GTCC power plant, specifically according to the control of the generator Make/the "on" position of dividing of switch GCB, the operating status of control and the cooler of " work 1 " pattern association, to form energy conservation Control loop;Therefore, the cooler power consumption for being able to solve the medium-and-large-sized GTCC power plant main transformer of the prior art is big, cooler The problems such as service life is short and plant maintenance heavy workload has structure is simple, reduces energy consumption, extends cooler service life etc. Substantive distinguishing features outstanding and significant technological progress.
2, the service life of Main Transformer Cooler can be extended using the present invention, reduce the abrasion of the equipment such as motor, saved The energy reduces station-service electricity.It is calculated by one group of cooler is stopped after shutdown, annual separate unit main transformer can save about 20,000 yuan of electricity charge.
Detailed description of the invention
Fig. 1 is a kind of on-off model schematic diagram of the introducing cooler control system of specific embodiment of the present invention.
Specific embodiment
Specific embodiment 1:
The power-economizing method for being used to control GTCC power plant Main Transformer Cooler that this specific embodiment 1 is related to, feature exist In:
1) several groups cooler, the control mode of the coal unit of the GTCC power plant are connected in GTCC power plant main transformer Five groups of control models of middle setting, including " work " mode, " auxiliary " mode, " spare " mode, " stopping " mode and " work 1 " mould Formula;Every group of control model corresponds to one group or two groups or more cooler;" work 1 " mode is according to the generator of GTCC power plant State is opened/stops, specifically according to the/"on" position of dividing of the control switch GCB of the generator, control and " work 1 " mould The operating status of the associated cooler of formula, to form energy-saving control loop;
2) when the control switch GCB closes a floodgate, the cooler with " work 1 " pattern association is operation operating mode, should Cooler brings into operation;When generator parallel off is shut down, the control switch GCB is disconnected, the cooler with " work 1 " pattern association For the mode of stopping working, the cooler is out of service, formed the cooler model- following control switch GCB point/"on" position and Stopping/operation operating mode;
3) when generator booting is grid-connected, control switch GCB closes a floodgate, and starts to transport with the cooler of " work 1 " pattern association Row;When generator parallel off is shut down, control switch GCB is disconnected, out of service with the cooler of " work 1 " pattern association;Form master The safe operation state of transformer is saved so that extra cooler is stopped transport when main transformer is with station service underrun Operating cost.
In the present embodiment:
The main transformer is connected with five groups of coolers, and in order to ensure reliable cooling, two groups of coolers are placed in " work " Mode, one group of cooler are placed in that " work 1 " mode, one group of cooler is placed in " auxiliary " mode, one group of cooler is placed in " spare " Mode;Or one group of cooler is placed in " work " mode, two groups of coolers are placed in " work 1 " mode, one group of cooler is placed in " auxiliary " mode, one group of cooler are placed in " spare " mode;It 1) will be when the main transformer be in inspecting state by all five Group cooler is placed in " stopping " mode;2) when main transformer puts into operation state, the cooler for being placed in " work " mode is thrown at once Enter operation, and be always maintained at longtime running, until main transformer is stopped transport;When the oil temperature or load current of main transformer are greater than The cooler for when setting value, being placed in " auxiliary mode " puts into operation, until the oil temperature or load current of main transformer are lower than setting Stop running with " auxiliary mode " associated cooler when value;It is placed in when any group of Cooler Fault in operation then starts automatically The cooler of " spare " mode;When generator booting is grid-connected, GCB closes a floodgate, and the cooler for being placed in " work 1 " mode starts to transport Row;When generator parallel off is shut down, the cooler for after GCB is disconnected, being placed in " work 1 " mode is out of service.
The main transformer is forced oil-circulation air-cooled transformer.
Referring to Fig.1, the main transformer that the present embodiment is related to is the air-cooled main transformer of forced oil-circulation, is had to upper layer oil temperature Strict requirements need timely forced air cooling, in order to ensure reliable cooling, need five groups of coolers being respectively set to " work Work ", " auxiliary ", " spare ", " stopping " and " work 1 " five kinds of modes, specifically or to use two schemes, i.e.,:It is cooling by two groups Device is placed in " work " mode, one group of cooler is placed in " work 1 " mode, one group of cooler is placed in " auxiliary " mode, one group of cooling Device is placed in " spare " mode;Or one group of cooler is placed in " work " mode, two groups of coolers are placed in " work 1 " mode, one Cooler is placed in " auxiliary " mode to group, one group of cooler is placed in " spare " mode.The opening and closing state signal of GCB is accessed into main transformer Cooler control cabinet, when generator booting is grid-connected, GCB closes a floodgate, and the cooler for being placed in " work 1 " mode brings into operation;Work as hair Motor parallel off is shut down, and the cooler for after GCB is disconnected, being placed in " work 1 " mode is out of service.Main transformer safety can be both guaranteed in this way Operation, and extra cooler can be stopped transport when main transformer is with station service underrun, save operating cost.
Illustrate 1:Main transformer high side switch divide-shut brake position signal, the cooler operation of control " work " mode;
Illustrate 2:Main transformer load signal, the cooler operation of control " auxiliary " mode;
Illustrate 3:GCB divide-shut brake position signal, the cooler operation of control " work 1 " mode.
The main transformer cooler control system touch screen control mode that the present embodiment is related to is as follows:
Newly-increased cable inventory
Other specific embodiments:
The characteristics of other of the invention specific embodiments is:Main transformer connection cooler group number or with for six groups, seven groups, Eight groups, nine groups or ten groups or more, the operating mode of five groups of main transformer coolers is set as " working " by the present embodiment, " auxiliary ", " standby With ", " stopping " and " work 1 " five kinds of modes;Be placed in " auxiliary " mode, " spare " mode respectively has one group of main transformer cooler, be placed in The cooler of " work 1 " mode is two groups or three groups, remaining cooler is placed in " work " mode.The opening and closing state of GCB is believed Number access main transformer cooler control cabinet, when generator booting is grid-connected, GCB closes a floodgate, and the cooler for being placed in " work 1 " mode starts Operation;When generator parallel off is shut down, the cooler for after GCB is disconnected, being placed in " work 1 " mode is out of service.It can both protect in this way Main transformer safe operation is demonstrate,proved, and extra cooler can be stopped transport when main transformer is with station service underrun, fortune is saved Row cost.
Remaining is the same as specific embodiment 1.

Claims (3)

1. the power-economizing method for controlling GTCC power plant Main Transformer Cooler, it is characterised in that:
1) several groups cooler is connected in GTCC power plant main transformer, is set in the control mode of the coal unit of the GTCC power plant Set five groups of control models, including " work " mode, " auxiliary " mode, " spare " mode, " stopping " mode and " work 1 " mode; Every group of control model corresponds to one group or two groups or more cooler;" work 1 " mode opens/stops according to the generator of GTCC power plant State, specifically according to the/"on" position of dividing of the control switch GCB of the generator, control and " work 1 " pattern association Cooler operating status, to form energy-saving control loop;
2) when the control switch GCB closes a floodgate, the cooler with " work 1 " pattern association is operation operating mode, the cooling Device brings into operation;When generator parallel off is shut down, the control switch GCB is disconnected, and the cooler with " work 1 " pattern association is to stop Only operating mode, the cooler is out of service, formed the cooler model- following control switch GCB point/"on" position and stop/ The operating mode of operation;
3) when generator booting is grid-connected, control switch GCB closes a floodgate, and brings into operation with the cooler of " work 1 " pattern association;When Generator parallel off is shut down, and control switch GCB is disconnected, out of service with the cooler of " work 1 " pattern association;Form main transformer Safe operation state, extra cooler to be stopped transport when main transformer is with station service underrun, save operation at This.
2. according to claim 1 for controlling the power-economizing method of GTCC power plant Main Transformer Cooler, it is characterised in that: The main transformer is connected with five groups of coolers, and in order to ensure reliable cooling, two groups of coolers are placed in " work " mode, one group Cooler is placed in that " work 1 " mode, one group of cooler is placed in " auxiliary " mode, one group of cooler is placed in " spare " mode;Or One group of cooler is placed in " work " mode, two groups of coolers are placed in " work 1 " mode, one group of cooler is placed in " auxiliary " mould Formula, one group of cooler are placed in " spare " mode;
1) all five groups of coolers will be placed in " stopping " mode when the main transformer is in inspecting state;
2) when main transformer puts into operation state, the cooler for being placed in " work " mode puts into operation at once, and is always maintained at length Phase operation, until main transformer is stopped transport;When the oil temperature of main transformer or load current are greater than the set value, it is placed in " auxiliary The cooler of mode " puts into operation, stops when the oil temperature or load current of main transformer are lower than setting value and " auxiliary mould The associated cooler operation of formula ";When in any group of Cooler Fault of operation, then starting is placed in the cooling of " spare " mode automatically Device;When generator booting is grid-connected, GCB closes a floodgate, and the cooler for being placed in " work 1 " mode brings into operation;When generator parallel off stops Machine, the cooler for after GCB is disconnected, being placed in " work 1 " mode are out of service.
3. according to claim 1 or 2 for controlling the power-economizing method of GTCC power plant Main Transformer Cooler, feature exists In:The main transformer is forced oil-circulation air-cooled transformer.
CN201811065228.3A 2018-09-13 2018-09-13 For controlling the power-economizing method of GTCC power plant Main Transformer Cooler Pending CN108873962A (en)

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CN201811065228.3A CN108873962A (en) 2018-09-13 2018-09-13 For controlling the power-economizing method of GTCC power plant Main Transformer Cooler

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CN201811065228.3A CN108873962A (en) 2018-09-13 2018-09-13 For controlling the power-economizing method of GTCC power plant Main Transformer Cooler

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Cited By (2)

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CN110571761A (en) * 2019-08-22 2019-12-13 北京四方继保自动化股份有限公司 generation and transformation group protection method applied to international nuclear power million units
CN110571761B (en) * 2019-08-22 2021-12-28 北京四方继保自动化股份有限公司 Generation and transformation group protection method applied to international nuclear power million units

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN110571761A (en) * 2019-08-22 2019-12-13 北京四方继保自动化股份有限公司 generation and transformation group protection method applied to international nuclear power million units
CN110571761B (en) * 2019-08-22 2021-12-28 北京四方继保自动化股份有限公司 Generation and transformation group protection method applied to international nuclear power million units

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