CN107893988B - Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation - Google Patents
Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation Download PDFInfo
- Publication number
- CN107893988B CN107893988B CN201710951050.1A CN201710951050A CN107893988B CN 107893988 B CN107893988 B CN 107893988B CN 201710951050 A CN201710951050 A CN 201710951050A CN 107893988 B CN107893988 B CN 107893988B
- Authority
- CN
- China
- Prior art keywords
- regenerative system
- heat regenerative
- control
- throttling
- unit
- 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.)
- Active
Links
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 142
- 230000033228 biological regulation Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 21
- 235000014171 carbonated beverage Nutrition 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 84
- 238000000605 extraction Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 5
- 238000006392 deoxygenation reaction Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000002829 reductive effect Effects 0.000 description 12
- 240000002853 Nelumbo nucifera Species 0.000 description 7
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 7
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000011217 control strategy Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000010977 unit operation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/34—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines and returning condensate to boiler with main feed supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
Heat regenerative system carbonated drink optimal control method the present invention relates to large thermal power plant automatic control technology field, in particular under a kind of Large-scale fire-electricity unit depth peak regulation.Two detailed rules and regulations performance assessment criteria can be improved on the basis of not influencing unit economy by this method, unit is when stopping HP heater occurs for high load capacity, reversed adjusting is throttled quickly to reduce unit load by heat regenerative system, is avoided unit overrun, is ensured the safe and stable operation of unit.
Description
Technical field
The present invention relates to automatic control for thermal power plant technical fields, in particular to returning under Large-scale fire-electricity unit depth peak regulation
Hot systems carbonated drink optimal control method.
Background technique
In recent years, Automation of Electric Systems level is higher and higher, and social development also proposes power supply quality higher
It generates electricity by way of merging two or more grid systems factory's ancillary service management implementation detailed rules and regulations it is required that North China Power Grid Co., Ltd discloses North China region at the beginning of 2009
Be incorporated into the power networks management implementation detailed rules and regulations (tentative) (hereinafter referred to as " two detailed rules and regulations ") for (tentative) and North China region power plant, two thin
Implementation then proposes more strict requirements to the regulation quality of coordinated control system.Currently, many units gone into operation,
Because the reasons such as Coal Quality, equipment itself, affect its load -response-speed, the requirement of power grid can not be met in time.Though
Some right units are in order to achieve the purpose that make the unit load speed of response to meet grid requirements, to improve unit unilaterally
Sliding pressure curve is done so even if can be improved load -response-speed, but not only affects the economy of unit operation, and make it
Safety cannot ensure, the service life of unit is caused to decline.Base of the present invention in sufficiently research heat regenerative system throttling technology
On plinth, a kind of heat regenerative system throttling control strategy for being suitble to different unit operating conditions is proposed, it is negative that unit can not only be greatly improved
The speed of response of lotus, moreover it is possible in unit stopping HP heater accident conditions, quickly adjust unit load, prevent load from transfiniting crisis machine
The risk of group safety guarantees that unit is run steadily in the long term.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of heat regenerative systems under Large-scale fire-electricity unit depth peak regulation
Carbonated drink optimal control method solves the problems, such as unit in primary frequency modulation and AGC after load -response-speed and stopping HP heater
The problem of unit load is ascended to heaven ensure that long-term efficient, economic, the safe and stable operation of unit.
The present invention adopts the following technical scheme:
A kind of heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation comprising heat regenerative system section
Stream, which is thrown, moves back logic, the control of heat regenerative system throttling deaerator level, heat regenerative system throttling condenser water level control and heat regenerative system
Throttle condensing water flow control；It is the triggering when unit load is greater than 60% specified unit load that heat regenerative system throttling, which throws and moves back logic,
Heat regenerative system throttling control；When deaerator level, condenser water level, condensing water flow are out-of-limit, then heat regenerative system throttling control is exited
System；After the heat regenerative system throttling control action exits, under could being triggered after waiting deaerator level to be restored to normal setting value
One-off.
Further, the heat regenerative system throttling control includes positive heat regenerative system throttling control or the throttling control of backspace hot systems
System.
Further, the positive heat regenerative system throttling control includes primary frequency modulation heat regenerative system throttling control and AGC backheat
System throttles control；The backspace hot systems throttling control is the throttling control of stopping HP heater heat regenerative system；The backspace hot systems
Throttling control has higher permission compared with the throttling control of positive heat regenerative system.
Further, the heat regenerative system throttling deaerator level control are as follows: before investment heat regenerative system throttling control,
Deaerator level setting value is fixed value；It puts into after heat regenerative system throttling control, deaerator level setting value is equal to former deoxygenation
The sum of device water level settings value and deaerator level setting bias；The deaerator level setting bias is equal to deaerator level
The difference of actual value and former deaerator level setting value.
Further, the deaerator level safe operation section of the heat regenerative system throttling deaerator level control is
1500mm-2900mm is more than the range, locking heat regenerative system throttling control.
Further, 400mm- between the condenser water level security operation zone of the heat regenerative system throttling condenser water level control
1100mm is more than the range, locking heat regenerative system throttling control.
Further, the constant interval for bearing water flow of the heat regenerative system throttling condensing water flow control is 180kg/s-
580kg/s。
Further, primary frequency modulation heat regenerative system throttling control and the throttling control of AGC heat regenerative system, when lifting load
The deviation between load instruction and actual load be must satisfy beyond set throttling starting dead zone range；It must assure that deoxygenation
Device water level is higher than safe minimum；Condensing water flow necessarily is greater than safe minimum.
Further, the stopping HP heater heat regenerative system flow control is the backspace heat system under stopping HP heater accident condition
System throttling control, is converted by the rise of unit load after unit stopping HP heater and needs increased heat regenerative system flow,
Unit load is quickly reduced by quickling increase low plus steam extraction amount.
The heat regenerative system throttling technology refers to the water flow for quickly changing heat regenerative system using certain means, thus spontaneous
Ground changes low plus steam extraction amount, so that changing into the quantity of steam that turbine low pressure cylinder does work, unit load is caused to change, real
The function that existing heat regenerative system throttling control unit load is adjusted.
Heat regenerative system carbonated drink optimal control method under the Large-scale fire-electricity unit depth peak regulation, is by heat regenerative system section
Stream changes unit load, and load variations amount is main related with unit current loads with the variable quantity of heat regenerative system flow, and
Respectively with the two positive correlation.In the amplitude of variation that heat regenerative system flow allows, when unit load is identical, backheat system
The amplitude of variation of system flow is bigger, and caused load variations amount is bigger；When heat regenerative system changes in flow rate amplitude is identical, unit is negative
Lotus is higher, and caused load variations amount is bigger.
Heat regenerative system carbonated drink optimal control method under the Large-scale fire-electricity unit depth peak regulation can draw in actually investment
The fluctuation of oxygen-eliminating device water level, condenser water level and condensing water flow needs the section of design safety and emergency pre-
Anti- measure.
The primary frequency modulation heat regenerative system throttling control is that primary frequency modulation requirement is responded by condensed water homophony door, simultaneously
Change boiler master BM, adjusts steam coal amount and water supply, realize subsequent load variations.In order to which primary frequency modulation is better achieved
Function has reserved the variation space of certain condenser hotwell water level and deaerator level to primary frequency modulation.If primary frequency modulation
When heat regenerative system throttling control function is unsatisfactory for requiring, system is controlled by former primary frequency modulation control mode automatically.
The AGC heat regenerative system throttling control is to change low plus steam extraction amount by quickly changing the flow of heat regenerative system,
So that changing into the quantity of steam that turbine low pressure cylinder does work, to quickly increase and decrease unit load, so that actual set is negative
Lotus is rapidly separated the dead zone of varying duty, improves the performance assessment criteria of two detailed rules and regulations.
The stopping HP heater heat regenerative system throttling control is to inhibit the quick of load by changing heat regenerative system water flow
Rise, load transfinites crisis unit safety when preventing high load capacity from stopping HP heater occurs, stopping HP heater heat regenerative system throttling control and
Heat regenerative system throttling used by primary frequency modulation heat regenerative system throttling control, the throttling of AGC heat regenerative system control is completely contradicted, and is back
The backward reference of hot systems throttling technology.At a time, the two can only put into a kind of control mode, since stopping HP heater is related to
The safe operation of unit, so giving the throttling of stopping HP heater heat regenerative system controls highest permission.
Beneficial effects of the present invention: technical solution of the present invention is utilized, the response of the primary frequency modulation and AGC of unit can be improved
Time improves the performance assessment criteria of two detailed rules and regulations of unit, and improves the economy of unit operation；When stopping HP heater occurs for unit
When, it can quickly inhibit ascending to heaven for unit load, guarantee unit safety operation, reduce impact of the stopping HP heater to unit equipment,
Equipment service life is improved, ensures the stable operation of unit long-term safety.
Detailed description of the invention
Fig. 1 is that logic is moved back in heat regenerative system throttling throwing.
Fig. 2 is heat regenerative system throttling deaerator level control strategy.
Fig. 3 is heat regenerative system throttling condenser Water Level Control.
Fig. 4 is heat regenerative system throttling condensing water flow control strategy.
Specific embodiment
The present invention provides the heat regenerative system carbonated drink optimal control methods under Large-scale fire-electricity unit depth peak regulation, by this
Method can improve two detailed rules and regulations performance assessment criteria on the basis of not influencing unit economy, and in high load capacity high plus solution occurs for unit
When column, reversed adjusting is throttled quickly to reduce unit load by heat regenerative system, unit overrun is avoided, improves the peace of unit
Quan Xing.The application is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is that control logic is moved back in the throwing of heat regenerative system throttling function, the heat regenerative system carbonated drink optimal control method, be
The load control system that the reasonable benefit/risk section of the parameters such as deaerator level, condenser hotwell water level, condensing water flow carries out.To ensure
Related major parameter control is moved back in logic in design heat regenerative system throttling function throwing and is controlled heat regenerative system throttling in security interval
Triggering and the duration done certain limitation, heat regenerative system throttling control is only greater than 60% specified unit in unit load and bears
Lotus can just trigger.During Load Regulation, the movement of steam turbine pitch and heat regenerative system throttling all can be to the practical function of unit
Rate has an impact, and the early period of lifting load is mainly heat regenerative system throttling to control unit load, the later period by steam turbine pitch come
Accurate control unit load.In heat regenerative system throttling action, once deaerator level, low-pressure heater water level, condenser water
Position, condensing water flow etc. are out-of-limit, then heat regenerative system throttling action stops immediately.In order to avoid the throttling of continuous heat regenerative system is dynamic
Work leads to oxygen-eliminating device liquid level sharp fall, after waiting deaerator levels to be restored to normal setting value after heat regenerative system throttling action
It can just set out next time.The heater of heat regenerative system throttling overdraw stores before coordinated control is made up by the firing optimization of boiler
Heat.
There are the throttlings of positive heat regenerative system and backspace hot systems two kinds of control modes of throttling for the heat regenerative system throttling control.
The primary frequency modulation and the throttling control of AGC heat regenerative system are to assist the steam turbine pitch negative to go up and down to meet unit demand
Lotus is positive heat regenerative system throttling control；The described stopping HP heater heat regenerative system throttling control be by change condensing water flow come
The rapid increase for inhibiting load is the throttling control of backspace hot systems.Stopping HP heater heat regenerative system throttling control and primary frequency modulation,
Heat regenerative system restriction characteristic used by the throttling of AGC heat regenerative system controls is completely contradicted, and is the reversed of heat regenerative system throttling technology
Using.At a time, the two can only put into a kind of control mode, since stopping HP heater is related to the safe operation of unit, so
Stopping HP heater heat regenerative system throttling control is given compared with primary frequency modulation heat regenerative system throttling control and the throttling control of AGC heat regenerative system
Permission is high.
The deaerator level control strategy as shown in Fig. 2, the heat regenerative system throttles, before investment heat regenerative system throttling,
Deaerator level setting value is a fixed value；It puts into after heat regenerative system throttling, we can carry out deaerator level setting value
Modification adds deaerator level setting value biasing for it, and deaerator level setting value at this time is equal to former deaerator level and sets
The sum of definite value and deaerator level setting biasing, that is, shield the adjustment effect of deaerator level, only adjust condensing water flow.It is described
The biasing of deaerator level setting value is equal to the difference of deaerator level actual value and former setting value and leads to when investment heat regenerative system throttles
Logical operation is crossed, this biasing is added, deaerator level setting value at this time is equal to deaerator level actual value, when exiting backheat system
When system throttling, biases deaerator level and tend to 0 with certain rate, deaerator level setting value can slowly be intended to former deoxygenation
Device water level settings value slows down fluctuating widely for thus bring condensing water flow.
The heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation meeting in actually investment
The fluctuation for causing deaerator level, condenser water level and condensing water flow needs section and the emergency of design safety
Precautionary measures.The deaerator level safe operation section of the heat regenerative system throttling deaerator level control is 1500mm-
2900mm is more than the range, issues sound-light alarm, the throttling control of automatic blocking heat regenerative system, condensed water pitch recovery water levelx control
System.Oxygen-eliminating device ordinary water level is set as 2200mm, and water level is opened higher than 3100mm overflow pitch, and water level is opened lower than 1300mm
Open two solidifying small pumps.
As shown in figure 3, the heat regenerative system throttling condenser water level control is adjusted using traditional single loop PID, in reality
When border water level is lower than condenser water level setting value, system can take condenser the movement of automatic water supplement；When water level is excessively high or even
When more than alarm water level, the overflow prevention valve of condenser, which can automatically open, carries out the movement that discharges water, and prevents water level excessively high to the safety of unit
Operation adversely affects.Heat regenerative system throttling is adjusted primarily directed to condensing water flow, and when condensing water flow increase,
Condenser water level decreasing is directly resulted in, if condenser water level settings are constant, it will carrying out moisturizing makes water level maintain setting value
Near, when system is in un-throttled state, need to reduce condensing water flow to restore deaerator level, at this time condenser water level
It can accordingly increase, and condensed water variable quantity and amount of restriction are substantially suitable, if not taking corresponding control measure, may result in
The raising of condenser water level causes the movement such as alarm.
400mm-1100mm between the condenser water level security operation zone of the heat regenerative system throttling condenser water level control, surpasses
The range is crossed, sound-light alarm, the throttling control of logic automatic blocking heat regenerative system, condensate pitch recovery water levelx control: condensing are issued
Device ordinary water level is set as 750mm, and water level is higher than 1200mm closing, and often benefit, danger mend, clean drain tank and dredge and coagulate door, is higher than
1580mm jumps steam turbine, and water level jumps condensate pump lower than 200mm delay 2s lower than 250mm delay 10s.
As shown in figure 4, the effect of the heat regenerative system throttling condensing water flow control is quickly to adjust load, steam turbine is reduced
Pitch movement allowance achieves energy-saving and emission reduction purposes to reduce restriction loss；Guarantee that deaerator level and condenser water level begin
It is run within its safe range eventually, when system is under un-throttled state, is maintained at water level near setting value, for throttling
Investment reserve preferable space.
The constant interval for bearing water flow of the heat regenerative system throttling condensing water flow control is 180kg/s-580kg/s,
The spare solidifying pump of the excessively high starting of flow and the too low unlatching condensed water recycling pitch of flow are avoided, when flow is delayed lower than 130kg/s
10s jumps condensate pump.
The primary frequency modulation heat regenerative system throttling control is to respond primary frequency modulation requirement by changing heat regenerative system flow,
Boiler master BM is changed simultaneously, steam coal amount and water supply is adjusted, realizes subsequent load variations.It is primary in order to be better achieved
Frequency modulation function has reserved the variation space of certain condenser hotwell water level and deaerator level to primary frequency modulation.If primary
When frequency modulation heat regenerative system throttling control function is unsatisfactory for requiring, system is controlled by former primary frequency modulation control mode automatically.
The AGC heat regenerative system throttling control is to change low plus steam extraction amount by quickly changing the flow of heat regenerative system,
So that changing into the quantity of steam that turbine low pressure cylinder does work, to quickly increase and decrease unit load, so that actual set is negative
Lotus is rapidly separated the dead zone of varying duty, improves the performance assessment criteria of two detailed rules and regulations.Regenerative Systems of Fossil Fired Power Sets throttling improves AGC tune
Section rate is the self-balancing ability by heat regenerative system heater, and when heat regenerative system flow is reduced, water side temperature rises, vapour side
Saturation temperature and pressure also rise, so that steam extraction pressure difference is reduced to which steam extraction amount declines, then the steam extraction amount of reduction flows through steam turbine
Electromotive power output is caused to increase；When heat regenerative system flow increases, situation is exactly the opposite, and the electrical power of output is reduced, and realizes back
The adjustment that hot systems throttle to the power of the assembling unit.
Must satisfy when primary frequency modulation heat regenerative system throttling control and AGC heat regenerative system throttling control lifting load with
Lower condition: when load up, the deviation between load instruction and actual load starts dead zone range beyond set throttling；Due to
Heat regenerative system flow need to be reduced when load up, therefore deaerator level is caused to reduce, thus should ensure that deaerator level allow into
The reduced movement of row ensures that it is higher than safe minimum；Heat regenerative system flow need to be reduced when due to load up, needed at this time to backheat
The movement that flow system flow is reduced, therefore guarantee that it necessarily is greater than safe minimum；Unit LDC instruction derivative is positive；Due to
Heat regenerative system flow need to be reduced when load up, need the movement reduced to solidifying pump frequency conversion at this time, therefore guarantee that it necessarily is greater than
Safe minimum, the movement that can be reduced；It meets the requirements away from last time throttling making time.When load down, load instruction with
Deviation between actual load starts dead zone range beyond the throttling of setting；Heat regenerative system water flow need to be increased when due to load down
Amount, therefore cause deaerator level to rise, therefore should ensure that the movement that deaerator level allows to be risen, ensure it lower than peace
Full highest limit, can execute the movement of rising；Heat regenerative system water flow need to be increased when due to load down, should ensure that backheat system
The movement that system water flow allows to be increased ensures that it is limited lower than safe highest；Unit LDC instruction derivative is negative；It is negative due to dropping
Heat regenerative system water flow need to be increased when lotus, need the movement increased solidifying pump frequency conversion at this time, therefore guarantee that it has to be lower than peace
Full highest limit, the movement that can be increased；It meets the requirements away from last time throttling making time.
The stopping HP heater heat regenerative system flow control is the backspace hot systems throttling control under stopping HP heater accident condition
System.It is converted by the rise of unit load after unit stopping HP heater and needs increased heat regenerative system water flow, fast prompt drop
Low unit load.
Embodiment described above is merely a preferred embodiment of the present invention, and the simultaneously exhaustion of the feasible implementation of non-present invention.It is right
For persons skilled in the art, any aobvious to made by it under the premise of without departing substantially from the principle of the invention and spirit and
The change being clear to should be all contemplated as falling within claims of the invention.
Claims (7)
1. the heat regenerative system carbonated drink optimal control method under a kind of Large-scale fire-electricity unit depth peak regulation, which is characterized in that it includes
Heat regenerative system throttling throw move back logic, heat regenerative system throttling deaerator level control, heat regenerative system throttling condenser water level control with
And heat regenerative system throttling condensing water flow control；It is to be greater than 60% specified unit in unit load that heat regenerative system throttling, which throws and moves back logic,
Heat regenerative system throttling control is triggered when load；When deaerator level, condenser water level, condensing water flow are out-of-limit, then backheat is exited
System throttles control；After the heat regenerative system throttling control action exits, after waiting deaerator level to be restored to normal setting value
It could trigger and act next time；
The heat regenerative system throttling control includes positive heat regenerative system throttling control or the throttling control of backspace hot systems；
The positive heat regenerative system throttling control includes primary frequency modulation heat regenerative system throttling control and the throttling control of AGC heat regenerative system；
The backspace hot systems throttling control is the throttling control of stopping HP heater heat regenerative system；The backspace hot systems throttling is controlled and is just returned
Hot systems throttling control is compared, and has higher permission.
2. control method according to claim 1, which is characterized in that the heat regenerative system throttling deaerator level control
Are as follows: before investment heat regenerative system throttling control, deaerator level setting value is fixed value；Put into heat regenerative system throttling control
Afterwards, deaerator level setting value is equal to the sum of former deaerator level setting value and deaerator level setting bias；The deoxygenation
Device water level settings bias is equal to the difference of deaerator level actual value and former deaerator level setting value.
3. control method according to claim 2, which is characterized in that the heat regenerative system throttling deaerator level control
It is 1500mm-2900mm that deaerator level, which is safely operated section, is more than the range, locking heat regenerative system throttling control.
4. control method according to claim 3, which is characterized in that the heat regenerative system throttling condenser water level control
400mm-1100mm between condenser water level security operation zone is more than the range, locking heat regenerative system throttling control.
5. control method according to claim 4, which is characterized in that the heat regenerative system throttling condensing water flow control
The constant interval for bearing water flow is 180kg/s-580kg/s.
6. control method according to claim 5, which is characterized in that primary frequency modulation heat regenerative system throttling control and
The throttling control of AGC heat regenerative system, when lifting load, must satisfy the deviation between load instruction and actual load beyond set
Throttling start dead zone range；It must assure that deaerator level is higher than safe minimum；Condensing water flow necessarily is greater than safety most
Lower bound.
7. control method according to claim 6, which is characterized in that stopping HP heater heat regenerative system throttling control be
Backspace hot systems under stopping HP heater accident condition, which throttle, to be controlled, and is rolled over by the rise of unit load after unit stopping HP heater
It calculates and needs increased heat regenerative system flow, quickly reduce unit load by quickling increase low plus steam extraction amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951050.1A CN107893988B (en) | 2017-10-13 | 2017-10-13 | Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951050.1A CN107893988B (en) | 2017-10-13 | 2017-10-13 | Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107893988A CN107893988A (en) | 2018-04-10 |
| CN107893988B true CN107893988B (en) | 2019-09-27 |
Family
ID=61803582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710951050.1A Active CN107893988B (en) | 2017-10-13 | 2017-10-13 | Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107893988B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925733A (en) * | 2019-12-06 | 2020-03-27 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Automatic control method for high load working condition and high acceleration and disconnection |
| CN112904725B (en) * | 2021-01-19 | 2022-04-05 | 西安交通大学 | Control method for improving flexibility of coal-fired unit through high-pressure steam extraction throttling |
| CN114811570B (en) * | 2022-04-20 | 2023-06-13 | 华北电力科学研究院有限责任公司 | High-load-adding and disconnecting fault load-reducing method and device suitable for coal-fired unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588010A (en) * | 2012-02-21 | 2012-07-18 | 浙江省电力试验研究院 | Method for estimating throttling frequency-modulation load characteristics of condensed water for thermoelectric generating set |
| JP2015096784A (en) * | 2013-11-15 | 2015-05-21 | 三浦工業株式会社 | Boiler system |
| CN107024914A (en) * | 2017-06-16 | 2017-08-08 | 国网河南省电力公司电力科学研究院 | Fired power generating unit condensate throttling participates in primary frequency modulation control system and operation method |
| CN107143844A (en) * | 2017-05-27 | 2017-09-08 | 杭州意能电力技术有限公司 | A kind of fired power generating unit control method and system based on condensate throttling |
-
2017
- 2017-10-13 CN CN201710951050.1A patent/CN107893988B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588010A (en) * | 2012-02-21 | 2012-07-18 | 浙江省电力试验研究院 | Method for estimating throttling frequency-modulation load characteristics of condensed water for thermoelectric generating set |
| JP2015096784A (en) * | 2013-11-15 | 2015-05-21 | 三浦工業株式会社 | Boiler system |
| CN107143844A (en) * | 2017-05-27 | 2017-09-08 | 杭州意能电力技术有限公司 | A kind of fired power generating unit control method and system based on condensate throttling |
| CN107024914A (en) * | 2017-06-16 | 2017-08-08 | 国网河南省电力公司电力科学研究院 | Fired power generating unit condensate throttling participates in primary frequency modulation control system and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107893988A (en) | 2018-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107893988B (en) | Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation | |
| CN104714566B (en) | A kind of condensate throttling control system and its method of controlling security | |
| CN104865830B (en) | Dual-intelligent-optimization control method for unit load | |
| CN107024914B (en) | Fired power generating unit condensate throttling participates in primary frequency modulation control system and operation method | |
| CN110212552A (en) | The control method and system of thermal power generation unit primary frequency modulation | |
| CN104052071B (en) | A kind of generating set intelligence primary frequency modulation method | |
| CN110360540B (en) | Boiler main steam temperature control method for power grid AGC load instruction frequent fluctuation | |
| CN106065791A (en) | The control method of a kind of thermal power generation unit primary frequency modulation and system | |
| CN106499005B (en) | A kind of water supply pump station feedback control system | |
| CN106368749B (en) | Method for cutting off water side of low-pressure heater to participate in primary frequency modulation loading of unit | |
| CN103216282A (en) | Thermal power generating unit loading control system and method based on continuously adjustable back pressure | |
| CN103452608B (en) | A kind of control gear for condensate system and controlling method | |
| CN113483319A (en) | Variable-frequency energy-saving optimization control system and method for condensate pump of thermal power generating unit | |
| CN103217946A (en) | Coordination variable load control method based on condensate pump frequency changer set | |
| CN103412479B (en) | Paired running oxygen-eliminating device intelligent control method | |
| CN106780103B (en) | DC boiler, steam turbine and power grid coordination control method for primary frequency modulation analysis | |
| CN103982891B (en) | Steam Generators in NPP drainage and flow control methods thereof | |
| CN112398144A (en) | Primary frequency modulation dynamic cooperative control method of steam turbine regulating system | |
| CN110925732A (en) | Agriculture and forestry biomass water-cooling vibration grate boiler combined heat and power generation unit small-capacity hot well and deaerator water level combined control strategy and device | |
| CN203962058U (en) | A kind of control gear for condensate system | |
| CN113446649B (en) | Logic control system and method of high-energy water inlet regulating valve in double control modes | |
| CN103195503A (en) | Steam turbine regulating system applicable to low-temperature multi-effect seawater desalination system | |
| CN113685800B (en) | Automatic parallel pump control system of steam-driven water supply pump based on rate self-adaption | |
| CN215294852U (en) | High-efficiency heat pump | |
| CN112665126B (en) | Control method and device of humidification system and humidification system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |