CN106870341B - A kind of fired power generating unit heat pump goes out dynamic balance Automatic adjustment method - Google Patents
A kind of fired power generating unit heat pump goes out dynamic balance Automatic adjustment method Download PDFInfo
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- CN106870341B CN106870341B CN201710066242.4A CN201710066242A CN106870341B CN 106870341 B CN106870341 B CN 106870341B CN 201710066242 A CN201710066242 A CN 201710066242A CN 106870341 B CN106870341 B CN 106870341B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims description 15
- 230000010354 integration Effects 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000010977 unit operation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- 238000004801 process automation Methods 0.000 description 1
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Classifications
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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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
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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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- 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
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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
- F04B49/20—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 by changing the driving speed
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of fired power generating unit heat pumps to go out dynamic balance Automatic adjustment method, and implementation steps include：It calculates the deviation between the feedwater flow setting value of fired power generating unit heat pump, feedwater flow actual value and passes through the first pid control module and export water supply master control instruction；Calculate inlet flow rate apportioning cost of the average value of the actual entry flow of two heat pumps of heat pump A and heat pump B of fired power generating unit as heat pump；Inlet flow rate apportioning cost is subtracted into the inlet flow rate of heat pump A and the first control instruction is exported by the second pid control module, water master control instruction, the first control instruction are added to the rotating speed of control heat pump A；Meanwhile inlet flow rate apportioning cost is subtracted into the inlet flow rate of heat pump B and the second control instruction is exported by third pid control module, the rotating speed of control heat pump B after water master control instruction, the second control instruction are added.The present invention can make automatic Fast-Balance of contributing when heat pump paired running, and can guarantee feedwater flow stabilization during heat pump output balance adjustment.
Description
Technical field
The present invention relates to the heat pump output balance adjustment technologies of fired power generating unit, and in particular to a kind of fired power generating unit heat pump output
Balance Automatic adjustment method.
Background technology
Thermal power generation unit is to reduce cost of electricity-generating, pursues higher economic benefit, meets increasingly strict discharge standard,
Gradually develop to large capacity, high parameter direction.The unit equipment of high capacity high parameter is numerous, and the labour for increasing operations staff is strong
Degree.The automatization level of unit is continuously improved, prevents that unit operation caused by artificial maloperation is unstable or even chaser accident, is
The key subjects that Present Thermal Power unit allocation need to solve.
It is the important link of Control System for Thermal Power Units to water management.Most of 600MW or more fired power generating units are equipped with one
Electrically driven feed pump, two steam feed pumps.Electrically driven feed pump is used in Unit Commitment, when normal operation, is given by two steam-operatings
Water pump is supplied to hydrodynamic force, is mainly realized by adjusting the output of two heat pumps to water management.Stablize to improve unit operation
Property and water supply control reliability, so that two heat pumps is contributed suitable.
Currently, two heat pump output balance adjustment processes are completed by manual operation.So-called manual operation refers to operations staff
Instruction, each equipment response action are sent out on runnable interface successively according to unit operating mode.The disadvantages of this method is that height relies on
The experience of operations staff, energy is not concentrated when lacking experience or work such as operations staff, it is easy to it is inappropriate parameter setting occur
Or situations such as instructing sequencing reverse, unreasonable instruction is sent out, the fluctuation for causing main feedwater flow larger influences unit
Even running, it could even be possible to causing the major accidents such as chaser.
Therefore, to improve the automatic control level of unit, mitigate the labor intensity of operations staff, make heat pump output leveling
Process does not influence the safe and stable operation of unit, and heat pump output leveling process automation, intelligence are had highly important meaning
Justice.
Invention content
The technical problem to be solved in the present invention：For the above problem of the prior art, providing one kind can make heat pump arranged side by side
It contributes when operation automatic Fast-Balance, and can guarantee the fired power generating unit vapour that feedwater flow is stablized during heat pump output balance adjustment
Pump out dynamic balance Automatic adjustment method.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of fired power generating unit heat pump goes out dynamic balance Automatic adjustment method, and implementation steps include：
1) deviation between the feedwater flow setting value of calculating fired power generating unit, feedwater flow actual value, the deviation is led to
It crosses the first pid control module and carries out operation output water supply master control instruction；
2) average value for calculating the actual entry flow of two heat pumps of heat pump A and heat pump B of fired power generating unit, by actual entry
Inlet flow rate apportioning cost of the average value of flow as every heat pump；
3) inlet flow rate apportioning cost is subtracted into the inlet flow rate of heat pump A and obtained difference is passed through into the second PID control mould
Block carries out operation and exports the first control instruction, the rotating speed control after water supply master control instruction, the first control instruction are added as heat pump A
System instruction is to control the rotating speed of heat pump A；Meanwhile the difference that inlet flow rate apportioning cost is subtracted the inlet flow rate of heat pump B and will obtained
Value carries out operation by third pid control module and exports the second control instruction, and water supply master control instruction, the second control instruction are added
Afterwards as the rotating speed control instruction of heat pump B to control the rotating speed of heat pump B.
Preferably, the deviation is subjected to operation by the first pid control module in step 1) and exports water supply master control instruction
When, in particular to using the deviation as the setting value of the first pid control module and by the process values of the first pid control module
It is set as 0, carrying out the water supply master control that operation exports by the first pid control module instructs.
Preferably, in step 3) by the second pid control module carry out operation export the first control instruction when, in particular to
By inlet flow rate apportioning cost subtract heat pump A inlet flow rate and using obtained difference as the setting value of the second pid control module,
And the process values of the second pid control module are set as 0, first exported by the progress operation of the second pid control module
Control instruction.
Preferably, it is described by the second pid control module by setting value carry out operation when, be in advance based on feedwater flow setting
Value Sp subtracts the first difference that feedwater flow actual value Pv is obtained and builds different polygronal function F1(x) and F2(x), pass through each
The inlet flow rate apportioning cost of heat pump subtracts the second difference that actual entry flow obtains and builds different polygronal function F3(x) and F4
(x)；The first difference that feedwater flow actual value Pv is obtained, which is subtracted, according to feedwater flow setting value Sp determines polygronal function F1(x) and
F2(x) value；The inlet flow rate apportioning cost of heat pump A is subtracted into actual entry flow and obtains the second difference of heat pump A, by heat pump A
The second difference substitute into polygronal function F3(x) and F4(x), the polygronal function F of heat pump A is obtained3(x) and F4(x) value；And by
The differential coefficient Kd of two pid control modules is set as 0, and proportional band COEFFICIENT K p takes polygronal function F1(x) broken line of value, heat pump A
Function F3(x) the higher value in value the two, integration time constant Ti take polygronal function F2(x) polygronal function of value, heat pump A
F4(x) the higher value in value the two.Preferably, the polygronal function F1(x) and polygronal function F2(x) value mode such as formula
(1) shown in；The polygronal function F3(x) and F4(x) shown in value mode such as formula (2)；
In formula (1), m is represented to water flow set point Sp and subtracts the first difference that feedwater flow actual value Pv is obtained；
In formula (2), n indicates that inlet flow rate apportioning cost subtracts the second difference that actual entry flow obtains
Preferably, in step 3) by third pid control module carry out operation export the second control instruction when, in particular to
By inlet flow rate apportioning cost subtract heat pump B inlet flow rate and using obtained difference as the setting value of third pid control module,
And the process values of third pid control module are set as 0, second exported by the progress operation of third pid control module
Control instruction.
Preferably, it is described by third pid control module by setting value carry out operation when, be in advance based on feedwater flow setting
Value Sp subtracts the first difference that feedwater flow actual value Pv is obtained and builds different polygronal function F1(x) and F2(x), pass through each
The inlet flow rate apportioning cost of heat pump subtracts the second difference that actual entry flow obtains and builds different polygronal function F3(x) and F4
(x)；The first difference that feedwater flow actual value Pv is obtained, which is subtracted, according to feedwater flow setting value Sp determines polygronal function F1(x) and
F2(x) value；The inlet flow rate apportioning cost of heat pump B is subtracted into actual entry flow and obtains the second difference of heat pump B, by heat pump B
The second difference substitute into polygronal function F3(x) and F4(x), the polygronal function F of heat pump B is obtained3(x) and F4(x) value；And by
The differential coefficient Kd of three pid control modules is set as 0, and proportional band COEFFICIENT K p takes polygronal function F1(x) broken line of value, heat pump B
Function F3(x) the higher value in value the two, integration time constant Ti take polygronal function F2(x) polygronal function of value, heat pump B
F4(x) the higher value in value the two.Preferably, the polygronal function F1(x) and polygronal function F2(x) value mode such as formula
(1) shown in；The polygronal function F3(x) and F4(x) shown in value mode such as formula (2)；
In formula (1), m is represented to water flow set point Sp and subtracts the first difference that feedwater flow actual value Pv is obtained；
In formula (2), n indicates that inlet flow rate apportioning cost subtracts the second difference that actual entry flow obtains.
Fired power generating unit heat pump of the present invention, which goes out dynamic balance Automatic adjustment method, has the advantages that subordinate：
1, fired power generating unit heat pump of the present invention go out in dynamic balance Automatic adjustment method heat pump output balance adjustment process whole process from
Dynamic control, reduces the labor intensity of operations staff, has prevented the possibility of artificial maloperation, improve the automation control of unit
It is horizontal.
2, fired power generating unit heat pump of the present invention, which goes out dynamic balance Automatic adjustment method, can make heat pump output Fast-Balance, and can protect
Feedwater flow is stablized during demonstrate,proving heat pump output balance adjustment.
Description of the drawings
Fig. 1 is the control strategy schematic diagram of one method of the embodiment of the present invention.
Fig. 2 is the control strategy schematic diagram of two method of the embodiment of the present invention.
Specific implementation mode
Embodiment one：
As shown in Figure 1, the implementation steps that the present embodiment fired power generating unit heat pump goes out dynamic balance Automatic adjustment method include：
1) deviation between the feedwater flow setting value of fired power generating unit, feedwater flow actual value is calculated, deviation is passed through the
One pid control module carries out operation output water supply master control instruction；
2) average value for calculating the actual entry flow of two heat pumps of heat pump A and heat pump B of fired power generating unit, by actual entry
Inlet flow rate apportioning cost of the average value of flow as every heat pump；
3) inlet flow rate apportioning cost is subtracted into the inlet flow rate of heat pump A and obtained difference is passed through into the second PID control mould
Block carries out operation and exports the first control instruction, the rotating speed control after water supply master control instruction, the first control instruction are added as heat pump A
System instruction is to control the rotating speed of heat pump A；Meanwhile the difference that inlet flow rate apportioning cost is subtracted the inlet flow rate of heat pump B and will obtained
Value carries out operation by third pid control module and exports the second control instruction, and water supply master control instruction, the second control instruction are added
Afterwards as the rotating speed control instruction of heat pump B to control the rotating speed of heat pump B.
The present embodiment fired power generating unit heat pump goes out dynamic balance Automatic adjustment method when implementing, and passes through the control in fired power generating unit
Setting, which is thrown, in system moves back button, can flexibly throw and move back during use.The present embodiment fired power generating unit heat pump goes out dynamic balance automatic adjustment
Method has used three sets of pid control modules：First pid control module~third pid control module, wherein the first PID control mould
Block is used to adjust the deviation of main feedwater flow setting value and process values, and the output valve of the first pid control module is as water supply master control
Instruction；Second pid control module is used to adjust the deviation of the apportioning cost and actual value of A heat pump inlet flow rates, the second PID control mould
The output valve of block is added with water supply master control instruction, and as the rotating speed control instruction of A heat pumps, controls the rotating speed of A heat pumps；Third
Pid control module is used to adjust the deviation of the apportioning cost and actual value of B heat pump inlet flow rates, the output of third pid control module
Value is added with water supply master control instruction, as the rotating speed control instruction of B heat pumps, controls the rotating speed of B heat pumps.A heat pump inlet flow rates
Apportioning cost is equal with the apportioning cost of B heat pump inlet flow rates, and equal to the average value of two heat pump inlet flow rates.
Deviation is subjected to operation by the first pid control module in the present embodiment, in step 1) and exports water supply master control instruction
When, in particular to using deviation as the setting value of the first pid control module and by the process values of the first pid control module be arranged
It is 0, carrying out the water supply master control that operation exports by the first pid control module instructs.
In the present embodiment, when carrying out operation the first control instruction of output by the second pid control module in step 3), specifically
Refer to that inlet flow rate apportioning cost is subtracted into the inlet flow rate of heat pump A and setting using obtained difference as the second pid control module
Definite value and the process values of the second pid control module are set as 0, carry out what operation exported by the second pid control module
First control instruction.
In the present embodiment, when carrying out operation the second control instruction of output by third pid control module in step 3), specifically
Refer to that inlet flow rate apportioning cost is subtracted into the inlet flow rate of heat pump B and setting using obtained difference as third pid control module
Definite value and the process values of third pid control module are set as 0, carry out what operation exported by third pid control module
Second control instruction.
The present embodiment fired power generating unit heat pump, which goes out dynamic balance Automatic adjustment method, can make to contribute automatically when heat pump paired running
Fast-Balance, and can guarantee feedwater flow stabilization during heat pump output balance adjustment, the automation of fired power generating unit can be improved
Controlled level prevents to cause unit operation unstable or even chaser thing because adjusting the maloperation in heat pump output equilibrium process manually
Therefore.
Embodiment two：
The present embodiment and embodiment one are essentially identical, and main difference is：For second in three sets of pid control modules
Pid control module, third pid control module control parameter carried out further optimization.
As shown in Fig. 2, in the present embodiment by the second pid control module by setting value carry out operation when, be in advance based on to
Water flow set point Sp subtracts the first difference that feedwater flow actual value Pv is obtained and builds different polygronal function F1(x) and F2
(x), the second difference that actual entry flow obtains is subtracted by the inlet flow rate apportioning cost of each heat pump and builds different broken lines
Function F3(x) and F4(x)；The first difference that feedwater flow actual value Pv is obtained, which is subtracted, according to feedwater flow setting value Sp determines folding
Line function F1(x) and F2(x) value；The inlet flow rate apportioning cost of heat pump A is subtracted into actual entry flow and obtains the second of heat pump A
The second difference of heat pump A is substituted into polygronal function F by difference3(x) and F4(x), the polygronal function F of heat pump A is obtained3(x) and F4(x)
Value；And the differential coefficient Kd of the second pid control module is set as 0, proportional band COEFFICIENT K p takes polygronal function F1Value (x),
The polygronal function F of heat pump A3(x) the higher value in value the two, integration time constant Ti take polygronal function F2(x) value, heat pump A
Polygronal function F4(x) the higher value in value the two.
In the present embodiment, when setting value being carried out operation by third pid control module, it is in advance based on feedwater flow setting
Value Sp subtracts the first difference that feedwater flow actual value Pv is obtained and builds different polygronal function F1(x) and F2(x), pass through each
The inlet flow rate apportioning cost of heat pump subtracts the second difference that actual entry flow obtains and builds different polygronal function F3(x) and F4
(x)；The first difference that feedwater flow actual value Pv is obtained, which is subtracted, according to feedwater flow setting value Sp determines polygronal function F1(x) and
F2(x) value；The inlet flow rate apportioning cost of heat pump B is subtracted into actual entry flow and obtains the second difference of heat pump B, by heat pump B
The second difference substitute into polygronal function F3(x) and F4(x), the polygronal function F of heat pump B is obtained3(x) and F4(x) value；And by
The differential coefficient Kd of three pid control modules is set as 0, and proportional band COEFFICIENT K p takes polygronal function F1(x) broken line of value, heat pump B
Function F3(x) the higher value in value the two, integration time constant Ti take polygronal function F2(x) polygronal function of value, heat pump B
F4(x) the higher value in value the two.
In the present embodiment, polygronal function F1(x) and polygronal function F2(x) shown in value mode such as formula (1)；Polygronal function
F3(x) and F4(x) shown in value mode such as formula (2)；
In formula (1), m is represented to water flow set point Sp and subtracts the first difference that feedwater flow actual value Pv is obtained；
In formula (2), n indicates that inlet flow rate apportioning cost subtracts the second difference that actual entry flow obtains.
Polygronal function F1(x)、F2(x)、F3(x)、F4(x) value mode is as shown in Table 1 below：
| m(t/h) | F1(x) output valve | F2(x) output valve | n(t/h) | F3(x) output valve | F4(x) output valve |
| -1000 | 1000 | 500 | -1000 | 200 | 120 |
| -500 | 1000 | 500 | -500 | 200 | 120 |
| -50 | 700 | 500 | -50 | 300 | 120 |
| -30 | 400 | 240 | -30 | 400 | 200 |
| -10 | 350 | 150 | -10 | 600 | 400 |
| 10 | 350 | 150 | 10 | 600 | 400 |
| 30 | 400 | 240 | 30 | 400 | 200 |
| 50 | 700 | 500 | 50 | 300 | 120 |
| 500 | 1000 | 500 | 500 | 200 | 120 |
| 1000 | 1000 | 500 | 1000 | 200 | 120 |
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of fired power generating unit heat pump goes out dynamic balance Automatic adjustment method, it is characterised in that implementation steps include：
1) deviation between fired power generating unit feedwater flow setting value, feedwater flow actual value is calculated, the deviation is passed through first
Pid control module carries out operation output water supply master control instruction；
2) average value for calculating the actual entry flow of two heat pumps of heat pump A and heat pump B of fired power generating unit, by actual entry flow
Inlet flow rate apportioning cost of the average value as every heat pump；
3) by inlet flow rate apportioning cost subtract heat pump A inlet flow rate and by obtained difference by the second pid control module into
Row operation exports the first control instruction, and the rotating speed control after water supply master control instruction, the first control instruction are added as heat pump A refers to
It enables to control the rotating speed of heat pump A；Meanwhile inlet flow rate apportioning cost is subtracted into the inlet flow rate of heat pump B and leads to obtained difference
It crosses third pid control module and carries out operation the second control instruction of output, make after water supply master control instruction, the second control instruction are added
For the rotating speed control instruction of heat pump B to control the rotating speed of heat pump B；
It is carried out when operation exports the first control instruction, in particular to by inlet flow rate by the second pid control module in step 3)
Apportioning cost subtracts the inlet flow rate of heat pump A and using obtained difference as the setting value of the second pid control module and by second
The process values of pid control module are set as 0, and carrying out operation by the second pid control module exports to obtain the first control instruction；Institute
When stating setting value progress operation through the second pid control module, it is in advance based on feedwater flow setting value Sp and subtracts feedwater flow
The first difference that actual value Pv is obtained builds different polygronal function F1(x) and F2(x), pass through the inlet flow rate of each heat pump point
The second difference that actual entry flow obtains, which is subtracted, with value builds different polygronal function F3(x) and F4(x)；According to feedwater flow
Setting value Sp subtracts the first difference that feedwater flow actual value Pv is obtained and determines polygronal function F1(x) and F2(x) value；By heat pump A
Inlet flow rate apportioning cost subtract actual entry flow and obtain the second difference of heat pump A, the second difference of heat pump A is substituted into broken line
Function F3(x) and F4(x), the polygronal function F of heat pump A is obtained3(x) and F4(x) value；And by the differential of the second pid control module
COEFFICIENT K d is set as 0, and proportional band COEFFICIENT K p takes polygronal function F1(x) the polygronal function F of value, heat pump A3(x) in value the two
Higher value, integration time constant Ti take polygronal function F2(x) the polygronal function F of value, heat pump A4(x) larger in value the two
Value.
2. fired power generating unit heat pump according to claim 1 goes out dynamic balance Automatic adjustment method, which is characterized in that in step 1)
The deviation by the first pid control module when operation exports water supply master control instruction, in particular to by the deviation make
For the first pid control module setting value and the process values of the first pid control module are set as 0, pass through the first PID control
Module carries out operation and exports to obtain water supply master control instruction.
3. fired power generating unit heat pump according to claim 1 goes out dynamic balance Automatic adjustment method, which is characterized in that the broken line
Function F1(x) and polygronal function F2(x) shown in value mode such as formula (1)；The polygronal function F3(x) and F4(x) value side
Shown in formula such as formula (2)；
In formula (1), m is represented to water flow set point Sp and subtracts the first difference that feedwater flow actual value Pv is obtained；
In formula (2), n indicates that inlet flow rate apportioning cost subtracts the second difference that actual entry flow obtains.
4. fired power generating unit heat pump according to claim 1 goes out dynamic balance Automatic adjustment method, which is characterized in that in step 3)
It carries out subtracting vapour when operation exports the second control instruction, in particular to by inlet flow rate apportioning cost by third pid control module
Pump the inlet flow rate of B and using obtained difference as the setting value of third pid control module and by third pid control module
Process values are set as 0, and carrying out operation by third pid control module exports to obtain the second control instruction.
5. fired power generating unit heat pump according to claim 4 goes out dynamic balance Automatic adjustment method, which is characterized in that described to pass through
When setting value is carried out operation by third pid control module, it is in advance based on feedwater flow setting value Sp and subtracts feedwater flow actual value
The first difference that Pv is obtained builds different polygronal function F1(x) and F2(x), subtracted by the inlet flow rate apportioning cost of each heat pump
The second difference that actual entry flow obtains is gone to build different polygronal function F3(x) and F4(x)；According to feedwater flow setting value
Sp subtracts the first difference that feedwater flow actual value Pv is obtained and determines polygronal function F1(x) and F2(x) value；By the entrance of heat pump B
Flow apportioning cost subtracts actual entry flow and obtains the second difference of heat pump B, and the second difference of heat pump B is substituted into polygronal function F3
(x) and F4(x), the polygronal function F of heat pump B is obtained3(x) and F4(x) value；And by the differential coefficient Kd of third pid control module
It is set as 0, proportional band COEFFICIENT K p takes polygronal function F1(x) the polygronal function F of value, heat pump B3(x) larger in value the two
Value, integration time constant Ti take polygronal function F2(x) the polygronal function F of value, heat pump B4(x) the higher value in value the two.
6. fired power generating unit heat pump according to claim 5 goes out dynamic balance Automatic adjustment method, which is characterized in that the broken line
Function F1(x) and polygronal function F2(x) shown in value mode such as formula (1)；The polygronal function F3(x) and F4(x) value side
Shown in formula such as formula (2)；
In formula (1), m is represented to water flow set point Sp and subtracts the first difference that feedwater flow actual value Pv is obtained；
In formula (2), n indicates that inlet flow rate apportioning cost subtracts the second difference that actual entry flow obtains.
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| CN108561875A (en) * | 2018-04-18 | 2018-09-21 | 国网天津市电力公司电力科学研究院 | The control method of boiler drum level in the case of paired running water pump |
| CN111638693B (en) * | 2020-06-04 | 2021-04-27 | 杭州和利时自动化有限公司 | Method and system for controlling multiple devices |
| CN114646051B (en) * | 2022-03-17 | 2023-06-23 | 国网湖南省电力有限公司 | Automatic control method and system for water supply of wet running boiler of supercritical thermal power unit |
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| JPS5471202A (en) * | 1977-11-18 | 1979-06-07 | Mitsubishi Heavy Ind Ltd | Automatic control device for boiler feed water pump of boiler |
| CN104100509B (en) * | 2014-04-04 | 2016-02-24 | 国家电网公司 | Electrically driven feedpump and steam feed pump paired running autocontrol method |
| CN204663594U (en) * | 2015-04-20 | 2015-09-23 | 浙江汽轮成套技术开发有限公司 | The feedwater flow control system of Power Plant Feedwater mercury vapour turbine |
| JP6581801B2 (en) * | 2015-04-28 | 2019-09-25 | 株式会社川本製作所 | Water supply equipment |
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