CN107559056A - A kind of increasing steam turbine system and adjusting method with AGC functions - Google Patents
A kind of increasing steam turbine system and adjusting method with AGC functions Download PDFInfo
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Abstract
A kind of increasing steam turbine system with AGC functions, including steam turbine high-pressure cylinder (1), Steam Turbine Through IP Admission (2), turbine low pressure cylinder (3), high pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system, water conservancy project load system；High pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system are respectively connecting to steam turbine high-pressure cylinder (1), Steam Turbine Through IP Admission (2), turbine low pressure cylinder (3), work independently and enter the quantity of steam of each cylinder for adjusting；Each bypass control system is additionally coupled to water conservancy project load system, and steam-water heat exchanging utilization is carried out using the steam that bypass is drawn and a variety of water conservancy project load components；Adjustable increasing steam turbine is set in bypass, quick regulation steam turbine load, improves " climbing capacity " and " response speed " of peak load regulation, meanwhile, reach the effect of " thermoelectricity decoupling ", further increase " fired power generating unit flexibility peak regulation " quality.
Description
Technical field
The invention belongs to power plant for energy conservation field, and in particular to a kind of increasing steam turbine system with AGC functions.
Background technology
Early stage, the main task of generating set was quota generating and stable electric generation due to China's short of electricity.With China's electric power
Development, electricity consumption and generating electricity has balanced, or even the superfluous situation that generates electricity occurs, and " amplitude and the frequency " of power consumption change
Also increasing, power network is balance electricity consumption and generating in time, and higher peak regulation requirement is proposed to generating set, unit is not required nothing more than and bears
Lotus value energy constantly regulate adjusts, and also requires that fired power generating unit will possess AGC functions.
AGC, (AGC, Automatic Generation Control), Automatic Generation Control, its core objective are " to ensure
System frequency is rated value "." quick response " and " Ramp Rate " when its core technology is exactly Load Regulation.
The rate of load change for participating in AGC units in power network at present is 1.5%MCR (rated load)/min or so, load
Operating lag is less than 2 minutes.Unit load governing speed is improved, reduces load responding time delay, this is to improve fired power generating unit
Direction horizontal AGC.
Fired power generating unit Load Regulation, mainly there are three directions：1 boiler load increases or reduced, and steam turbine follows, so as to reach
To the effect of regulation generation load；In the case that 2 boiler loads are certain, steam turbine load is adjusted, it is negative so as to reach regulation generating
The effect of lotus；3 boilers and steam turbine load are all adjusted, and are increased or are reduced, so as to have the function that to adjust generation load.
For pure generating set, electric load is mainly adjusted by boiler.Steam turbine passively follows.Boiler load increase or
Reduce, increase or reduce the quantity of steam into steam turbine, contributed so as to increase or reduce steam turbine.
For thermoelectricity unit, non-heat supply season is pure generating set, and its peak regulation method is similar to pure generating set；Heat supply season
During operation, first have to meet heat demand, heat supply is people's livelihood rigidity task, and power supply is then elastic task.Boiler and turbine negative
Lotus is all adjusted, mainly by Steam Turhine Adjustment.
In the case where boiler load is certain, high, medium and low cylinder pressure throttle flow mainly is adjusted by bypassing, reaches regulation
The purpose of steam turbine load.Set high steam to bypass, open big or turn down, decrease or increase into high pressure cylinder quantity of steam, reduce
Or increase high pressure cylinder is contributed.It is referred to as high other.Set middle pressure steam to bypass, open big or turn down, decrease or increase and steamed into intermediate pressure cylinder
Vapour amount, decrease or increase intermediate pressure cylinder output；It is other in abbreviation.Set low-pressure steam to bypass, open big or turn down, decrease or increase entrance
Low pressure (LP) cylinder quantity of steam, decrease or increase low pressure (LP) cylinder output.Referred to as low side.
, can be only with low other regulation when grid requirements Load Regulation amount is smaller；Grid requirements Load Regulation amount
, can be only with middle other regulation when more moderate.Middle side can be reduced into the steam in intermediate pressure cylinder and low pressure (LP) cylinder simultaneously
Amount；When grid requirements Load Regulation amount is bigger, it can be adjusted only with by height.High side can be reduced into senior middle school simultaneously
Quantity of steam in cylinder pressure and low pressure (LP) cylinder；When grid requirements Load Regulation amount is bigger, high, medium and low three bypasses can be utilized simultaneously
Regulation.
In steam by-pass, its heat needs to be sent to heat exchangers for district heating, for heating heat supply network backwater.Absorb bypass heat
Hot net water is admitted to heat-accumulator tank, temporarily stores.
During bypass regulation, its response speed depends on the governing speed of reject steam flow.If enter vapour with Valve controlling
Amount, the unlatching of valve and closing speed are all slow, so as to cause AGC response ratios relatively to lag.If can find one kind compares valve
The faster system of governing speed, AGC response cans improve, so as to improve peak regulation quality.
The content of the invention
It is an object of the invention to provide the generation load regulating system of a kind of " quick response ", to improve Load Regulation speed
Degree, solves the problems, such as to propose in above-mentioned background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of increasing steam turbine system with AGC functions, including steam turbine high-pressure cylinder (1), Steam Turbine Through IP Admission (2), steamer
Machine low pressure (LP) cylinder (3), high pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system, water conservancy project load system；
Characterized in that, high pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system are respectively connecting to steam turbine
High pressure cylinder (1), Steam Turbine Through IP Admission (2), turbine low pressure cylinder (3), work independently and enter the quantity of steam of each cylinder for adjusting；
High pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system are further connected to water conservancy project load system, water
Work load system has a variety of water conservancy project load components, and carrying out carbonated drink with a variety of water conservancy project load components using the steam that bypass is drawn changes
Heat utilization.
As further scheme of the invention：The adjusting method of the described increasing steam turbine system with AGC functions, including
Following steps：
A, when grid requirements Load Regulation amount is smaller, adjusted merely by low voltage bypass regulating system is turned on and off
Save load；When low voltage bypass regulating system is run, its heat will be sent to heat supply network condenser and heat exchangers for district heating, and heating heat supply network returns
Water, the hot net water for absorbing bypass heat are driven into heat-accumulator tank (11), temporarily stored, proper time is sent to heat user；
B, when grid requirements Load Regulation amount is more moderate, can be merely by being turned on and off intermediate pressure by-pass regulation
Unite to adjust load；Intermediate pressure by-pass regulating system can be reduced into the quantity of steam in intermediate pressure cylinder and low pressure (LP) cylinder simultaneously；Middle other fortune
During row, its heat will be sent to heat supply network condenser and high parameter heat exchangers for district heating, heat heat supply network backwater, absorb the heat supply network of bypass heat
Water is driven into heat-accumulator tank (11), temporarily stores, proper time is sent to heat user；
C, can be merely by being turned on and off high pressure turbine by regulating system when grid requirements Load Regulation amount is bigger
To adjust load；High pressure turbine by regulating system can be reduced into the quantity of steam in high, intermediate pressure cylinder and low pressure (LP) cylinder simultaneously；By high pressure
When road regulating system is opened, TRT load is very low, and now, denitrification apparatus import cigarette temperature can be very low, SCR device effect
Fruit can be very poor, now, high other when running, its heat to be sent to No.1 it is high plus, when improving underload No.1 it is high plus throttle (steam) temperature,
The water temperature into economizer is improved, so as to improve the flue-gas temperature into SCR device, improves denitration effect；
D, when grid requirements Load Regulation amount is bigger, can utilize high pressure turbine by regulating system, intermediate pressure by-pass regulating system,
Three bypath systems of low voltage bypass regulating system are adjusted simultaneously.
Compared with prior art, the beneficial effects of the invention are as follows：
Increasing steam turbine system provided by the invention with AGC functions, is bypassed using steam-turbine, have high other, middle side,
Low three regulating systems in side.
Adjustable increasing steam turbine is set in bypass, substitutes valve.It is adjustable increase steam turbine be turned on and off speed be less than etc.
In 35 seconds, be considerably faster than valve was turned on and off speed.
This fast advantage of speed is turned on and off using steam turbine is increased, quick regulation steam turbine load, improves peak load regulation
" climbing capacity " and " response speed ", meanwhile, reached the effect of " thermoelectricity decoupling ", further increase " fired power generating unit spirit
Active peak regulation " quality.
Brief description of the drawings
Fig. 1 is the structural representation of the increasing steam turbine system with AGC functions.
In figure：It is other in the high other increasing steam turbine of 1- steam turbine high-pressure cylinders, 2- Steam Turbine Through IP Admissions, 3- turbine low pressure cylinders, 4-, 5-
Increase the low other increasing steam turbine of steam turbine, 6-, 7- heat supply networks condenser, 8- heat exchangers for district heatings, 9- high parameters heat exchangers for district heating, 10- No.1 high pressures
The high other power steam interface of heater, 11- heat-accumulator tanks, 12- Steam Turbine Through IP Admissions UNICOM pipeline, 13-, the high other suction steam of 14-
The other steam turbine power that increases steams in the high other increasing steam turbine steam drain of interface, 15- steam turbine No.1s bleed steam pipework, 16- reheaters, 17-, 18-
It is other in vapour interface, 19- reheaters cold end, 20- reheaters hot junction, 21- to increase other increasing steam turbine row in steam turbine suction vapor interface, 22-
Steam ports, 23- it is low it is other increase in steam turbine power steam interface, 24- it is other increase steam turbine suction vapor interface, 25- exhaust steam in steam turbine pipeline,
The low other increasing steam turbine steam drains of 26-, 27- main steams, 28- heat supplies backwater, 29- heat supply water outlets.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of increasing steam turbine system with AGC functions, including steam turbine high-pressure cylinder
(1), Steam Turbine Through IP Admission (2), turbine low pressure cylinder (3), high pressure turbine by regulating system, intermediate pressure by-pass regulating system, by low pressure
Road regulating system, water conservancy project load system；Wherein, high pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulation system
System is respectively connecting to steam turbine high-pressure cylinder (1), Steam Turbine Through IP Admission (2), turbine low pressure cylinder (3), works independently for adjusting
Into the quantity of steam of each cylinder；High pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system are additionally coupled to
Water conservancy project load system, steam-water heat exchanging utilization is carried out using the steam that bypass is drawn and a variety of water conservancy project load components.
High pressure turbine by regulating system includes high other increasing steam turbine (4) and supporting pipe valve, and the height is other to increase the dynamic of steam turbine (4)
Power vapor interface (13) is connected with main steam line, high other suction vapor interface (14) the connection steam turbine one for increasing steam turbine (4)
Number bleed steam pipework (15), high other steam steam drain (17) the connection No.1 high-pressure heater (10) for increasing steam turbine (4).
Intermediate pressure by-pass regulating system includes middle other increasing steam turbine (5) and supporting pipe valve, and the middle side increases the dynamic of steam turbine (5)
Power vapor interface (18) is connected with the cold end (19) of steam turbine reheater (16) or hot junction (20), the middle other suction for increasing steam turbine (5)
Enter vapor interface (21) connection Steam Turbine Through IP Admission UNICOM's pipeline (12), middle other steam drain (22) the connection senior staff officer for increasing steam turbine (5)
Number heat exchangers for district heating (9).
Low voltage bypass regulating system includes low other increasing steam turbine (6) and supporting pipe valve, and the low other steam turbine (6) that increases is connected
Power steam interface (23) be connected with intermediate pressure cylinder UNICOM pipeline (12), the low other suction vapor interface (24) for increasing steam turbine (6)
Connect exhaust steam in steam turbine pipeline (25), low other steam drain (26) the connection heat supply network condenser (7) for increasing steam turbine (6).
Water conservancy project load system has a variety of water conservancy project load components, including heat supply network condenser (7), heat exchangers for district heating (8), senior staff officer
Number heat exchangers for district heating (9), No.1 high-pressure heater (10), heat-accumulator tank (11).The water conservancy project being made up of a variety of water conservancy project load components is born
G system can be utilized reject steam heat reasonable distribution when being adjusted to unit in itself or in heating network.
Heat supply network condenser (7) water inlet is connected with heat supply water return pipeline；Heat supply network condenser (7) delivery port and heat supply network
Heater (8) water inlet is connected with high parameter heat exchangers for district heating (25) water inlet；Heat exchangers for district heating (8) adds with high parameter heat supply network
Hot device (25) water system is in parallel；Heat exchangers for district heating (8) delivery port and high parameter heat exchangers for district heating (25) delivery port and heat-accumulator tank
(11) it is connected；Heat exchangers for district heating (8) delivery port and heat-accumulator tank (11) delivery port are all connected with heat supply outlet pipeline.
The high other increasing steam turbine (4), middle other increasing steam turbine (5), the low other steam turbine (6) that increases are adjustable increasing steam turbine.
The adjusting method of the described increasing steam turbine system with AGC functions, comprises the following steps：
A, when grid requirements Load Regulation amount is smaller, adjusted merely by low voltage bypass regulating system is turned on and off
Save load；When low voltage bypass regulating system is run, its heat will be sent to heat supply network condenser and heat exchangers for district heating, and heating heat supply network returns
Water, the hot net water for absorbing bypass heat are driven into heat-accumulator tank (11), temporarily stored, proper time is sent to heat user.
B, when grid requirements Load Regulation amount is more moderate, can be merely by being turned on and off intermediate pressure by-pass regulation
Unite to adjust load；Intermediate pressure by-pass regulating system can be reduced into the quantity of steam in intermediate pressure cylinder and low pressure (LP) cylinder simultaneously；Middle other fortune
During row, its heat will be sent to heat supply network condenser and high parameter heat exchangers for district heating, heat heat supply network backwater, absorb the heat supply network of bypass heat
Water is driven into heat-accumulator tank (11), temporarily stores, proper time is sent to heat user.
C, can be merely by being turned on and off high pressure turbine by regulating system when grid requirements Load Regulation amount is bigger
To adjust load；High pressure turbine by regulating system can be reduced into the quantity of steam in high, intermediate pressure cylinder and low pressure (LP) cylinder simultaneously；By high pressure
When road regulating system is opened, TRT load is very low, and now, denitrification apparatus import cigarette temperature can be very low, SCR device effect
Fruit can be very poor, now, high other when running, its heat to be sent to No.1 it is high plus, when improving underload No.1 it is high plus throttle (steam) temperature,
The water temperature into economizer is improved, so as to improve the flue-gas temperature into SCR device, improves denitration effect.
D, when grid requirements Load Regulation amount is bigger, can utilize high pressure turbine by regulating system, intermediate pressure by-pass regulating system,
Three bypath systems of low voltage bypass regulating system are adjusted simultaneously.
Finally it should be noted that：The explanation of the present invention is the foregoing is only, is not intended to limit the invention, although to this hair
Bright to be described in detail, for those skilled in the art, it still can be to foregoing described technical scheme
Modify, or equivalent substitution is carried out to which part technical characteristic.Within the spirit and principles of the invention, made
Any modification, equivalent substitution and improvements etc., should be included in the scope of the protection.
Claims (8)
1. a kind of increasing steam turbine system with AGC functions, including steam turbine high-pressure cylinder (1), Steam Turbine Through IP Admission (2), steam turbine
Low pressure (LP) cylinder (3), high pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system, water conservancy project load system；Its
It is characterised by, high pressure turbine by regulating system, intermediate pressure by-pass regulating system, low voltage bypass regulating system are respectively connecting to steam turbine height
Cylinder pressure (1), Steam Turbine Through IP Admission (2), turbine low pressure cylinder (3), work independently and enter the quantity of steam of each cylinder for adjusting；It is high
Pressure bypass control system, intermediate pressure by-pass regulating system, low voltage bypass regulating system are further connected to water conservancy project load system, water conservancy project
Load system has a variety of water conservancy project load components, and steam-water heat exchanging is carried out using the steam that bypass is drawn and a variety of water conservancy project load components
Utilize.
2. the increasing steam turbine system according to claim 1 with AGC functions, it is characterised in that high pressure turbine by regulating system
Including increasing steam turbine (4) and supporting pipe valve, the high other power steam interface (13) and main steam pipe for increasing steam turbine (4) by height
Road is connected, and high other suction vapor interface (14) the connection steam turbine No.1 bleed steam pipework (15) for increasing steam turbine (4), height is other to increase steam turbine
(4) steam steam drain (17) connection No.1 high-pressure heater (10).
3. the increasing steam turbine system according to claim 1 with AGC functions, it is characterised in that intermediate pressure by-pass regulating system
Including middle other increasing steam turbine (5) and supporting pipe valve, the middle other power steam interface (18) for increasing steam turbine (5) and steam turbine are again
The cold end (19) of hot device (16) or hot junction (20) are connected, middle other suction vapor interface (21) the connection steam turbine for increasing steam turbine (5)
Intermediate pressure cylinder UNICOM pipeline (12), middle other steam drain (22) the connection high parameter heat exchangers for district heating (9) for increasing steam turbine (5).
4. the increasing steam turbine system according to claim 1 with AGC functions, it is characterised in that low voltage bypass regulating system
Including low other increasing steam turbine (6) and supporting pipe valve, the low connected power steam interface (23) of other increasing steam turbine (6) and middle pressure
Cylinder UNICOM pipeline (12) is connected, low other suction vapor interface (24) the connection exhaust steam in steam turbine pipeline (25) for increasing steam turbine (6), low
Side increases steam drain (26) the connection heat supply network condenser (7) of steam turbine (6).
5. the increasing steam turbine system according to claim 1 with AGC functions, it is characterised in that a variety of water conservancy project load components
Including heat supply network condenser (7), heat exchangers for district heating (8), high parameter heat exchangers for district heating (9), No.1 high-pressure heater (10), heat-accumulator tank
(11)；Water conservancy project load system utilizes reject steam heat reasonable distribution when being adjusted to unit in itself or in heating network.
6. the increasing steam turbine system according to claim 5 with AGC functions, it is characterised in that the heat supply network condenser (7)
Water inlet is connected with heat supply water return pipeline；Heat supply network condenser (7) delivery port and heat exchangers for district heating (8) water inlet and high parameter heat
Net heater (25) water inlet is connected；Heat exchangers for district heating (8) is in parallel with high parameter heat exchangers for district heating (25) water system；Heat supply network
Heater (8) delivery port and high parameter heat exchangers for district heating (25) delivery port are connected with heat-accumulator tank (11)；Heat exchangers for district heating (8) goes out
The mouth of a river and heat-accumulator tank (11) delivery port are all connected with heat supply outlet pipeline.
7. the increasing steam turbine system with AGC functions according to claim 2-4, it is characterised in that the high other increasing steam turbine
(4), middle other increasing steam turbine (5), the low other steam turbine (6) that increases are adjustable increasing steam turbine.
A kind of 8. adjusting method of the increasing steam turbine system as claimed in claim 1 with AGC functions, it is characterised in that including
Following steps：
A, it is negative to adjust merely by low voltage bypass regulating system is turned on and off when grid requirements Load Regulation amount is smaller
Lotus；When low voltage bypass regulating system is run, its heat will be sent to heat supply network condenser and heat exchangers for district heating, heat heat supply network backwater, inhale
The hot net water for receiving bypass heat is driven into heat-accumulator tank (11), temporarily stores, proper time is sent to heat user；
B, can be next merely by intermediate pressure by-pass regulating system is turned on and off when grid requirements Load Regulation amount is more moderate
Adjust load；Intermediate pressure by-pass regulating system can be reduced into the quantity of steam in intermediate pressure cylinder and low pressure (LP) cylinder simultaneously；During middle other operation,
Its heat will be sent to heat supply network condenser and high parameter heat exchangers for district heating, heat heat supply network backwater, absorb the hot net water quilt of bypass heat
Heat-accumulator tank (11) is squeezed into, is temporarily stored, proper time is sent to heat user；
C, when grid requirements Load Regulation amount is bigger, can be adjusted merely by high pressure turbine by regulating system is turned on and off
Save load；High pressure turbine by regulating system can be reduced into the quantity of steam in high, intermediate pressure cylinder and low pressure (LP) cylinder simultaneously；High pressure turbine by is adjusted
When section system is opened, TRT load is very low, and now, denitrification apparatus import cigarette temperature can very low, SCR device effect meeting
It is very poor, it is now, high other when running, its heat to be sent to No.1 it is high plus, when improving underload No.1 it is high plus throttle (steam) temperature, improve
Into the water temperature of economizer, so as to improve the flue-gas temperature into SCR device, denitration effect is improved；
D, when grid requirements Load Regulation amount is bigger, high pressure turbine by regulating system, intermediate pressure by-pass regulating system, low pressure can be utilized
Three bypath systems of bypass control system are adjusted simultaneously.
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| CN108592136A (en) * | 2018-07-13 | 2018-09-28 | 大连亨利测控仪表工程有限公司 | A kind of thermal power plant's flexibility transformation twin-tub decoupling depth peak regulation system |
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| CN107559056B (en) | 2023-09-08 |
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