CN106468190B - The coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand - Google Patents
The coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand Download PDFInfo
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- CN106468190B CN106468190B CN201611016003.XA CN201611016003A CN106468190B CN 106468190 B CN106468190 B CN 106468190B CN 201611016003 A CN201611016003 A CN 201611016003A CN 106468190 B CN106468190 B CN 106468190B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The present invention relates to indirect air cooling unit operation systems, particularly disclose a kind of coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand.The coordinated control system of indirect air cooling the High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand includes the steam turbine high intermediate pressure cylinder and turbine low pressure cylinder being connected to by cross over pipe, it is characterised in that：Dual temperature area condenser is installed, dual temperature area condenser side connects heat exchangers for district heating by heat supply network water pipe, and the other side connects indirect dry cooling tower by circulating water pipe on the blow-off line of the turbine low pressure cylinder；Heat exchangers for district heating is separately connected the machine extraction steam pipe and as the occasion requires extraction steam pipe, and the machine extraction steam pipe connects cross over pipe.The configuration of the present invention is simple is realized and is easy, solves the electric heating contradictory problems of high back pressure thermal power plant unit, can realize that effective coordination, unit operation can meet dispatching of power netwoks requirement and meet the requirement of heat supply network thermic load using rear electric heating, ensure that unit operation safety.
Description
（One）Technical field
The present invention relates to indirect air cooling unit operation system, more particularly to a kind of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network
The coordinated control system of ability and heat demand.
（Two）Background technology
In recent years, since the increase of concentrated supply of heating in the city demand and country are stepped up for what environmental protection and energy saving required,
High back pressure heat supply process has obtained faster development.Currently, the method for operation of High Back Pressure Steam Turbine Units is the mode of electricity determining by heat.With
Unit generation is averagely put into operation the increasing of number of units, electricity and the irreconcilable lance of heat using the reduction of hourage and high back pressure thermal power plant unit
Shield becomes increasingly conspicuous.When power grid needs to increase load, since low pressure (LP) cylinder capacity also increases as, heat supply network can not consume so many
Heat, cause heat supply network return water temperature increase, in the case that leaving water temperature is constant, the low pressure (LP) cylinder exhausted spare heat that can be taken away subtracts
Few, unit back pressuce increases, and causes unit can not safe operation even shutdown；When electric load needs to reduce, since capacity subtracts
It is few, cause thermic load insufficient.
（Three）Invention content
In order to compensate for the shortcomings of the prior art, the present invention provides the indirect air cooling of a kind of coordinated operation, energy-saving safe is high
The coordinated control system of back pressure unit peak load regulation network ability and heat demand.
The present invention is achieved through the following technical solutions：
A kind of coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand, including pass through connection
The steam turbine high intermediate pressure cylinder and turbine low pressure cylinder of siphunculus connection, it is characterised in that：The blow-off line of the turbine low pressure cylinder
On dual temperature area condenser is installed, dual temperature area condenser side connects heat exchangers for district heating by heat supply network water pipe, and the other side is by following
Ring water pipe connects indirect dry cooling tower；Heat exchangers for district heating is separately connected the machine extraction steam pipe and as the occasion requires extraction steam pipe, the connection of the machine extraction steam pipe
Cross over pipe.
The present invention configures dual temperature area condenser, by indirect cool tower radiate for the purpose of stand-by heat system；Heat exchangers for district heating is configured,
Using the machine steam extraction and two kinds of mode of heatings of steam extraction as the occasion requires, when electric load increases, utilizes indirect cool tower to increase heat dissipation capacity and ensure to supply
Heat does not increase not to be increased with unit back pressuce；When electric load reduces, using steam extraction increase as the occasion requires, heating load ensures total supply as the occasion requires
Heat is not reduced, to realize that electric heating is coordinated.
The present invention configures dual temperature area condenser, unilateral side operation hot net water, unilateral side operation indirect cool tower recirculated water.Indirect cool tower recycles
Variable frequency pump is configured on waterpipe and adjusts quantity of circulating water, software module is passed back by the monitoring of flow and temperature in real time, after calculating
Returned data controls water pump and ensures indirect cool tower heat dissipation capacity.It communicates with one another as the occasion requires with the machine steam extraction, configures electricity and adjust valve, data are passed back
Software module prompts to open control extraction flow guarantee heating load by software module.
The present invention more excellent technical solution be：
Valve A and pressure gauge are installed on the cross over pipe, valve B is installed on the machine extraction steam pipe, as the occasion requires on extraction steam pipe
Valve C is installed, valve D, water pump A and valve E are installed on heat supply network water pipe, flow is installed on the water outlet of heat exchangers for district heating
A is counted, flowmeter B, valve F, water pump B and valve G are installed on circulating water pipe, realize the real-time prison of flow and temperature in each pipeline
Control.
The valve A, valve B, valve C, valve D, valve E, valve F, valve G, pressure gauge, flowmeter A, flowmeter B,
Water pump A and water pump B are all connected with software module, and processing is collected to the data of detection.
The water pump A and water pump B is variable frequency pump, energy saving convenient for running frequency is adjusted flexibly, and extends its use
Service life.
The software module is mounted on industrial personal computer, and industrial personal computer is connected to DCS system by interface message processor (IMP) A or Hard link respectively,
DCS system connects SIS systems by interface message processor (IMP) B through gateway.
Software module is mounted on industrial personal computer, industrial personal computer interface message processor (IMP) A in a manner of OPC communications from the DCS systems of unit
System reads measuring point data, is calculated measuring point data in industrial personal computer, result of calculation passes back to DCS systems by two ways
System, the signal for control are passed back to DCS by way of hardwire, ensure that the time of control signal transmission is most short, display, report
Other data such as alert return to DCS interface message processor (IMP) A in a manner of OPC.It controls signal and display alarm signal is realized effectively
Isolation ensures the speed safety with transmission in time of transmission.Display picture, prompt, alarm, DCS may be implemented on industrial personal computer
Picture configuration, which shows, prompts, alarms, to be realized to the data passed back；Last DCS again passes result of calculation by interface message processor (IMP) B
Give SIS systems；The inquiry of result of calculation may be implemented in SIS systems, can also realize that picture is shown by configuration.
The configuration of the present invention is simple is realized and is easy, solves the electric heating contradictory problems of high back pressure thermal power plant unit, using rear electric heating
It can realize that effective coordination, unit operation can meet dispatching of power netwoks requirement and meet the requirement of heat supply network thermic load, ensure that machine
Group operational safety.
（Four）Description of the drawings
The present invention will be further described below with reference to the drawings.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the connection diagram of data transmission of the present invention.
In figure, 1 steam turbine high intermediate pressure cylinder, 2 cross over pipes, 3 valve A, 4 the machine extraction steam pipes, 5 pressure gauges, 6 steam turbine low-pressures
Cylinder, 7 valve B, 8 valve C, 9 extraction steam pipes as the occasion requires, 10 heat supply network water pipes, 11 valve D, 12 water pump A, 13 valve E, 14 heat exchangers for district heatings,
15 flowmeter A, 16 dual temperature area condensers, 17 circulating water pipes, 18 indirect dry cooling towers, 19 flowmeter B, 20 valve F, 21 water pump B, 22
Valve G, 23 industrial personal computers, 24 interface message processor (IMP) A, 25 DCS systems, 26 interface message processor (IMP) B, 27 gateways, 28 SIS systems.
（Five）Specific implementation mode
Attached drawing is a kind of specific embodiment of the present invention.The embodiment includes the steam turbine senior middle school being connected to by cross over pipe 2
Cylinder pressure 1 and turbine low pressure cylinder 6 are equipped with dual temperature area condenser 16, dual temperature area on the blow-off line of the turbine low pressure cylinder 6
16 side of condenser connects heat exchangers for district heating 14 by heat supply network water pipe 10, and the other side connects indirect dry cooling tower by circulating water pipe 17
18；Heat exchangers for district heating 14 is separately connected the machine extraction steam pipe 4 and as the occasion requires extraction steam pipe 9, and the machine extraction steam pipe 4 connects cross over pipe 2；It is described
Valve A3 and pressure gauge 5 are installed on siphunculus 2, valve B7 is installed on the machine extraction steam pipe 4, valve is installed on extraction steam pipe 9 as the occasion requires
Door C8, is equipped with valve D11, water pump A12 and valve E13 on heat supply network water pipe 10, is equipped on the water outlet of heat exchangers for district heating 14
Flowmeter A15 is equipped with flowmeter B19, valve F20, water pump B21 and valve G22 on circulating water pipe 17；The valve A3, valve
Door B7, valve C8, valve D11, valve E13, valve F20, valve G22, pressure gauge 5, flowmeter A15, flowmeter B19, water pump
A12 and water pump B21 are all connected with software module；The water pump A12 and water pump B21 is variable frequency pump；The software module installation
On industrial personal computer 23, industrial personal computer 23 is connected to DCS system 25 by interface message processor (IMP) A24 or Hard link respectively, and DCS system 25 passes through interface
Machine B26 connects SIS systems 28 through gateway 27.
The present invention the method for operation be：
When winter high back pressure heats, when power grid needs to increase load, since 6 displacement of turbine low pressure cylinder is also with increasing
Add, heat supply network can not consume so many heat, and operation data is transferred back to by DCS system 25 on industrial personal computer 23 at this time, industrial personal computer
23 by calculating judge that 18 increased heat dissipation capacity of indirect dry cooling tower, industrial personal computer 23 is needed to send out control signal, pass through hardwire
It passes to 25 control loop water pump B21 of DCS system and increases flow, when heat dissipation capacity reaches requirement, the passbacks such as circulating water flow, temperature
To industrial personal computer 23, the adjustment control signal of industrial personal computer 23 keeps circulating water flow to stablize, steam turbine heat exhaust, hot net water are inhaled at this time
Heat, indirect cool tower heat dissipation capacity reach new balance.
When electric load needs to reduce, since displacement is reduced, cause thermic load insufficient, industrial personal computer 23 passes through calculating at this time
Judge that heat supply network needs the imbalance between thermic load and steam turbine heat exhaust, prompts operations staff to increase by way of alarm
The machine steam extraction amount prompts enabling steam extraction as the occasion requires to reach new balance until meeting thermal load demands when cannot still meet.
Claims (1)
1. a kind of coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand, including pass through unicom
Pipe（2）The steam turbine high intermediate pressure cylinder of connection（1）And turbine low pressure cylinder（6）, it is characterised in that：The turbine low pressure cylinder（6）
Blow-off line on dual temperature area condenser is installed（16）, dual temperature area condenser（16）Side passes through heat supply network water pipe（10）Connection heat
Net heater（14）, the other side passes through circulating water pipe（17）Connect indirect dry cooling tower（18）；Heat exchangers for district heating（14）It is separately connected
The machine extraction steam pipe（4）Extraction steam pipe as the occasion requires（9）, the machine extraction steam pipe（4）Connect cross over pipe（2）；The cross over pipe（2）On be equipped with
Valve A（3）And pressure gauge（5）, the machine extraction steam pipe（4）On valve B is installed（7）, extraction steam pipe as the occasion requires（9）On valve C is installed
（8）, heat supply network water pipe（10）On valve D is installed（11）, water pump A（12）With valve E（13）, heat exchangers for district heating（14）Water outlet
On flowmeter A is installed（15）, circulating water pipe（17）On flowmeter B is installed（19）, valve F（20）, water pump B（21）And valve
G（22）；The valve A（3）, valve B（7）, valve C（8）, valve D（11）, valve E（13）, valve F（20）, valve G（22）、
Pressure gauge（5）, flowmeter A（15）, flowmeter B（19）, water pump A（12）With water pump B（21）It is all connected with software module；The water pump
A（12）With water pump B（21）It is variable frequency pump；The software module is mounted on industrial personal computer（23）On, industrial personal computer（23）Lead to respectively
Cross interface message processor (IMP) A（24）Or Hard link is connected to DCS system（25）, DCS system（25）Pass through interface message processor (IMP) B（26）Through gateway（27）Connection
SIS systems（28）.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611016003.XA CN106468190B (en) | 2016-11-18 | 2016-11-18 | The coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand |
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| CN201611016003.XA CN106468190B (en) | 2016-11-18 | 2016-11-18 | The coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420142B (en) * | 2017-05-15 | 2019-03-19 | 西安热工研究院有限公司 | A kind of Turbine Cold Junction optimization progress control method following pump based on frequency conversion |
| CN107120981B (en) * | 2017-06-16 | 2023-04-25 | 华电郑州机械设计研究院有限公司 | High back pressure heat supply working condition abnormal control system with on-line monitoring and closed loop adjustment |
| CN107421349A (en) * | 2017-06-16 | 2017-12-01 | 华电郑州机械设计研究院有限公司 | A kind of circulation applied to indirect air cooling high back pressure thermal power plant unit |
| CN107620948B (en) * | 2017-11-01 | 2024-03-01 | 华电郑州机械设计研究院有限公司 | Safety monitoring system for heat supply network head station |
| CN109990362B (en) * | 2019-04-09 | 2020-11-06 | 福州怡辉电力设备有限公司 | High-backpressure heat supply system of indirect air cooling unit and adjusting method |
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| US4379485A (en) * | 1981-04-09 | 1983-04-12 | Foster Wheeler Energy Corporation | Wet/dry steam condenser |
| CN203773321U (en) * | 2014-03-12 | 2014-08-13 | 内蒙古电力勘测设计院 | Power plant SIS/MIS monitor and management information integrated system |
| CN205065867U (en) * | 2015-10-12 | 2016-03-02 | 中国电力工程顾问集团东北电力设计院有限公司 | Indirect air cooling unit steam turbine steam exhaust waste heat recovery is used for heat supply network circulation water heating system |
| CN105910454A (en) * | 2016-05-17 | 2016-08-31 | 山东泓奥电力科技有限公司 | Direct high back pressure heat supply system of indirect air cooling unit |
| CN206205943U (en) * | 2016-11-18 | 2017-05-31 | 新疆华电喀什热电有限责任公司 | The coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004020140A (en) * | 2002-06-20 | 2004-01-22 | Mitsubishi Heavy Ind Ltd | Air heating equipment and thermal power generation facility |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4379485A (en) * | 1981-04-09 | 1983-04-12 | Foster Wheeler Energy Corporation | Wet/dry steam condenser |
| CN203773321U (en) * | 2014-03-12 | 2014-08-13 | 内蒙古电力勘测设计院 | Power plant SIS/MIS monitor and management information integrated system |
| CN205065867U (en) * | 2015-10-12 | 2016-03-02 | 中国电力工程顾问集团东北电力设计院有限公司 | Indirect air cooling unit steam turbine steam exhaust waste heat recovery is used for heat supply network circulation water heating system |
| CN105910454A (en) * | 2016-05-17 | 2016-08-31 | 山东泓奥电力科技有限公司 | Direct high back pressure heat supply system of indirect air cooling unit |
| CN206205943U (en) * | 2016-11-18 | 2017-05-31 | 新疆华电喀什热电有限责任公司 | The coordinated control system of indirect air cooling High Back Pressure Steam Turbine Units peak load regulation network ability and heat demand |
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