CN112902135B - A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass - Google Patents

A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass Download PDF

Info

Publication number
CN112902135B
CN112902135B CN202110287616.1A CN202110287616A CN112902135B CN 112902135 B CN112902135 B CN 112902135B CN 202110287616 A CN202110287616 A CN 202110287616A CN 112902135 B CN112902135 B CN 112902135B
Authority
CN
China
Prior art keywords
water supply
bypass
supply bypass
flow
feedwater
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
Application number
CN202110287616.1A
Other languages
Chinese (zh)
Other versions
CN112902135A (en
Inventor
王伟
常东锋
胡博
江浩
周桂平
薛朝囡
余小兵
林琳
王顺江
赵苑竹
李铁
唐俊刺
王磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Liaoning Electric Power Co Ltd
Xian Thermal Power Research Institute Co Ltd
Original Assignee
State Grid Liaoning Electric Power Co Ltd
Xian Thermal Power Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Liaoning Electric Power Co Ltd, Xian Thermal Power Research Institute Co Ltd filed Critical State Grid Liaoning Electric Power Co Ltd
Priority to CN202110287616.1A priority Critical patent/CN112902135B/en
Publication of CN112902135A publication Critical patent/CN112902135A/en
Application granted granted Critical
Publication of CN112902135B publication Critical patent/CN112902135B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
    • F22B33/18—Combinations of steam boilers with other apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

本发明公开了一种基于给水旁路调频的给水旁路容量选取方法，包括以下步骤：以机组变负荷需求为目标，获取调频需求的给水旁路流量；以机组锅炉烟气脱硝达标为边界，确定烟气脱硝的给水旁路流量的最大值；根据调频需求的给水旁路流量及烟气脱硝的给水旁路流量的最大值确定满足火电机组给水调频和脱硝效果的给水旁路容量，完成给水旁路容量的选取，该方法以机组调频需求为基础，同时考虑对脱硝影响实现给水旁路容量的选取。

Figure 202110287616

The invention discloses a method for selecting a water supply bypass capacity based on the frequency regulation of a water supply bypass. The method comprises the following steps: taking the variable load demand of the unit as the target, and obtaining the water supply bypass flow required by the frequency regulation; Determine the maximum value of the feedwater bypass flow for flue gas denitrification; determine the feedwater bypass capacity that meets the frequency regulation and denitrification effects of the thermal power unit according to the maximum value of the feedwater bypass flow required by frequency regulation and the feedwater bypass flow for flue gas denitrification, and complete the water supply For the selection of bypass capacity, this method is based on the frequency regulation demand of the unit, and at the same time considers the impact on denitrification to realize the selection of the bypass capacity of the feed water.

Figure 202110287616

Description

一种基于给水旁路调频的给水旁路容量选取方法A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass

技术领域technical field

本发明属于火力发电技术调频调峰领域，涉及一种基于给水旁路调频的给水旁路容量选取方法。The invention belongs to the field of thermal power generation technology frequency regulation and peak regulation, and relates to a water supply bypass capacity selection method based on water supply bypass frequency regulation.

背景技术Background technique

新能源在为我们提供大量清洁电力同时，也给电网的安全运行和电力供应保障带来了巨大挑战。目前，国内绝大多数汽轮发电机组是通过高压调节阀节流来实现调频，由于对蒸汽的节流是一种不可逆的损失，因此造成机组运行经济性的下降，对于采用节流调节方式的汽轮机来说，这种下降更为显著。While new energy provides us with a large amount of clean electricity, it also brings great challenges to the safe operation of the power grid and the guarantee of power supply. At present, the vast majority of domestic steam turbine generator sets realize frequency regulation by throttling the high-pressure regulating valve. Since the throttling of steam is an irreversible loss, the economical operation of the unit is reduced. For steam turbines, the decline is even more pronounced.

各种辅助功率调节技术的研究一直是有关科学技术人员关注的焦点。旁路给水通过快速改变流经高加的给水量，实现高加抽汽量相应变化，从而使在汽轮机高、中压缸做功的蒸汽量发生变化、机组短时输出功率变化，其本质是利用锅炉省煤器的蓄能。给水旁路一般不具备调节能力，故需配套增设给水调节旁路。事实上，旁路给水调节负荷响应快、调节能力大、控制策略简单，是众多辅助调频手段中，是对机组改动最小，经济性影响最小的技术路线之一，目前已有少量机组试点应用。The research of various auxiliary power regulation technologies has always been the focus of the concerned scientific and technical personnel. By rapidly changing the amount of feed water flowing through the high-pressure feed water, the high-pressure extraction steam volume changes accordingly, so that the amount of steam working in the high and medium pressure cylinders of the steam turbine changes, and the short-term output power of the unit changes. Energy storage of boiler economizers. The water supply bypass generally does not have the ability to adjust, so it is necessary to add a water supply adjustment bypass. In fact, the bypass feedwater regulation load response is fast, the regulation capacity is large, and the control strategy is simple. Among the many auxiliary frequency regulation methods, it is one of the technical routes with the smallest changes to the unit and the smallest economic impact. At present, a small number of units have been pilot applications.

然而给水调频的给水旁路容量目前没有合适的选择方式，且未考虑给水调频之后对锅炉烟气脱硝的影响。因此有必要给出以机组调频需求为基础，综合考虑对脱硝影响的给水旁路容量选取方法。However, there is currently no suitable selection method for the feedwater bypass capacity of feedwater frequency regulation, and the impact on boiler flue gas denitrification after feedwater frequency regulation is not considered. Therefore, it is necessary to provide a method for selecting the capacity of the feedwater bypass based on the frequency regulation demand of the unit and comprehensively considering the impact on denitrification.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于克服上述现有技术的缺点，提供了一种基于给水旁路调频的给水旁路容量选取方法，该方法以机组调频需求为基础，同时考虑对脱硝影响实现给水旁路容量的选取。The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and to provide a method for selecting the capacity of the feedwater bypass based on the frequency regulation of the feedwater bypass. Select.

为达到上述目的，本发明所述的基于给水旁路调频的给水旁路容量选取方法包括以下步骤：In order to achieve the above object, the method for selecting the water supply bypass capacity based on the frequency modulation of the water supply bypass according to the present invention comprises the following steps:

以机组变负荷需求为目标，获取调频需求的给水旁路流量；Taking the variable load demand of the unit as the goal, obtain the feedwater bypass flow required by frequency regulation;

以机组锅炉烟气脱硝达标为边界，确定烟气脱硝的给水旁路流量的最大值；The maximum value of the feedwater bypass flow for flue gas denitrification is determined based on the boundary of the unit boiler flue gas denitration reaching the standard;

根据调频需求的给水旁路流量及烟气脱硝的给水旁路流量的最大值确定满足火电机组给水调频和脱硝效果的给水旁路容量，完成给水旁路容量的选取。According to the maximum value of the feedwater bypass flow required by frequency regulation and the feedwater bypass flow of flue gas denitrification, the feedwater bypass capacity that meets the frequency regulation and denitration effects of thermal power units is determined, and the selection of feedwater bypass capacity is completed.

调频需求的给水旁路流量ΔQ为：The feedwater bypass flow ΔQ required by frequency regulation is:

Figure BDA0002981143090000021
Figure BDA0002981143090000021

其中，ΔQ为给水旁路流量，ΔH为变负荷量，r为高压加热器序号，n为压力最高一级高压加热器的序号，tr为第r级加热器出口的给水焓值，t5为第1级高压加热器入口的给水焓值，ηr为第r级加热器的抽汽效率。Among them, ΔQ is the feedwater bypass flow, ΔH is the variable load, r is the serial number of the high-pressure heater, n is the serial number of the highest-pressure high-pressure heater, t r is the feed water enthalpy value at the outlet of the r-th stage heater, t 5 is the feed water enthalpy at the inlet of the first stage high pressure heater, and η r is the extraction efficiency of the rth stage heater.

第r级加热器抽汽效率ηr为：The extraction efficiency η r of the r-th stage heater is:

Figure BDA0002981143090000022
Figure BDA0002981143090000022

其中，Hr为加热器r对应的抽汽等效焓降，qr为1kg抽汽在加热器r中的放热量。Among them, H r is the equivalent enthalpy drop of the extraction steam corresponding to the heater r, and q r is the heat release of 1 kg of extraction steam in the heater r.

机组给水旁路的流量满足：The flow rate of the feed water bypass of the unit satisfies:

Ty-ΔTy≥TSCR (3)T y -ΔT y ≥T SCR (3)

其中，Ty为给水旁路投运前SCR入口烟温，ΔTy为给水旁路投运前后SCR入口烟温降低值，TSCR为SCR达标要求的入口烟温最小值。Among them, Ty is the SCR inlet flue gas temperature before the feed water bypass is put into operation, ΔT y is the drop value of the SCR inlet flue gas temperature before and after the feed water bypass is put into operation, and T SCR is the minimum inlet flue temperature required for the SCR to reach the standard.

给水旁路投运前后SCR入口烟温降低值ΔTy为：The reduction value ΔT y of the flue gas temperature at the SCR inlet before and after the feedwater bypass is put into operation is:

Figure BDA0002981143090000031
Figure BDA0002981143090000031

其中，T1为高压加热器出口的给水温度，T3为给水旁路投运后主给水温度。Among them, T1 is the feedwater temperature at the outlet of the high pressure heater, and T3 is the main feedwater temperature after the feedwater bypass is put into operation.

给水旁路投运后主给水温度T3通过给水旁路给水的焓值确定，给水旁路给水的焓值与通过旁路的给水流量存在式(5)所示热量平衡：After the feedwater bypass is put into operation, the main feedwater temperature T3 is determined by the enthalpy value of the feedwater bypass. The enthalpy value of the feedwater bypass and the feedwater flow through the bypass have a heat balance as shown in formula (5):

h1*(Q-ΔQ)+h2*ΔQ＝h3*Q(5)h 1 *(Q-ΔQ)+h 2 *ΔQ=h 3 *Q(5)

其中，Q为主给水流量，h1为高压加热器出口的给水焓值，h2为给水旁路投运后给水旁路出口的给水焓值，h3为给水旁路投运后主给水焓值。Among them, Q is the main feed water flow, h 1 is the feed water enthalpy value of the outlet of the high pressure heater, h 2 is the feed water enthalpy value of the feed water bypass outlet after the feed water bypass is put into operation, h 3 is the main feed water enthalpy after the feed water bypass is put into operation value.

根据式(5)得调频需求的给水旁路流量ΔQ为：According to formula (5), the feedwater bypass flow ΔQ required by frequency regulation is:

Figure BDA0002981143090000032
Figure BDA0002981143090000032

根据式(3)～式(6)，以SCR要求的入口烟温为边界，计算给水旁路流量的最大值。According to equations (3) to (6), the maximum value of the feedwater bypass flow is calculated with the inlet flue gas temperature required by the SCR as the boundary.

本发明具有以下有益效果：The present invention has the following beneficial effects:

本发明所述的基于给水旁路调频的给水旁路容量选取方法在具体操作时，以机组变负荷需求为目标，获取调频需求的给水旁路流量，以机组锅炉烟气脱硝达标为边界，确定烟气脱硝的给水旁路流量的最大值，再调频需求的给水旁路流量及烟气脱硝的给水旁路流量的最大值确定满足火电机组给水调频和脱硝效果的给水旁路容量，从而在满足机组调频需求的基础上，考虑对脱硝影响完成给水旁路容量的选取。The method for selecting the capacity of the feedwater bypass based on the frequency regulation of the feedwater bypass according to the present invention, in the specific operation, takes the variable load demand of the unit as the target, obtains the feedwater bypass flow required by the frequency regulation, and takes the boiler flue gas denitrification of the unit as the boundary to determine the The maximum value of the feedwater bypass flow rate for flue gas denitrification, the maximum value of the feedwater bypass flow rate for re-frequency regulation and the maximum value of the feedwater bypass flow rate for flue gas denitrification determine the feedwater bypass capacity that meets the frequency regulation and denitrification effects of thermal power units. On the basis of the frequency regulation demand of the unit, the selection of the water supply bypass capacity is completed considering the influence of denitrification.

附图说明Description of drawings

图1为本发明的结构示意图。FIG. 1 is a schematic structural diagram of the present invention.

其中，1为锅炉，2为脱硝系统，3为给水旁路系统，4为主给水系统，5为汽轮发电机组，6为电网。Among them, 1 is the boiler, 2 is the denitration system, 3 is the feed water bypass system, 4 is the main feed water system, 5 is the steam turbine generator set, and 6 is the power grid.

具体实施方式Detailed ways

下面结合附图对本发明做进一步详细描述：Below in conjunction with accompanying drawing, the present invention is described in further detail:

参考图1，本发明所述基于给水旁路调频的给水旁路容量选取方法同时考虑给水调频过程中给水的流量变化对机组负荷和机组脱硝效果的影响；以机组变负荷需求为目标，计算给水旁路的流量；以机组锅炉烟气脱硝达标为边界，给出满足烟气脱硝的给水旁路流量上限。Referring to Fig. 1, the method for selecting the capacity of the water supply bypass based on the frequency regulation of the water supply bypass according to the present invention simultaneously considers the influence of the flow change of the water supply on the unit load and the unit denitrification effect during the water supply frequency regulation process; The flow rate of the bypass; the upper limit of the bypass flow rate of the feedwater that meets the flue gas denitrification is given based on the boundary of the unit boiler flue gas denitration reaching the standard.

本发明所述的基于给水旁路调频的给水旁路容量选取方法包括以下步骤：The method for selecting the water supply bypass capacity based on the frequency modulation of the water supply bypass according to the present invention comprises the following steps:

以机组变负荷需求为目标，获取调频需求的给水旁路流量；Taking the variable load demand of the unit as the goal, obtain the feedwater bypass flow required by frequency regulation;

以机组锅炉烟气脱硝达标为边界，确定烟气脱硝的给水旁路流量的最大值；The maximum value of the feedwater bypass flow for flue gas denitrification is determined based on the boundary of the unit boiler flue gas denitration reaching the standard;

根据调频需求的给水旁路流量及烟气脱硝的给水旁路流量的最大值确定满足火电机组给水调频和脱硝效果的给水旁路容量，完成给水旁路容量的选取。According to the maximum value of the feedwater bypass flow required by frequency regulation and the feedwater bypass flow of flue gas denitrification, the feedwater bypass capacity that meets the frequency regulation and denitration effects of thermal power units is determined, and the selection of feedwater bypass capacity is completed.

调频需求的给水旁路流量ΔQ为：The feedwater bypass flow ΔQ required by frequency regulation is:

Figure BDA0002981143090000041
Figure BDA0002981143090000041

其中，ΔQ为给水旁路流量，ΔH为变负荷量，r为高压加热器序号，n为压力最高一级高压加热器的序号，tr为第r级加热器出口的给水焓值，t5为第1级高压加热器入口的给水焓值，ηr为第r级加热器的抽汽效率。Among them, ΔQ is the feedwater bypass flow, ΔH is the variable load, r is the serial number of the high-pressure heater, n is the serial number of the highest-pressure high-pressure heater, t r is the feed water enthalpy value at the outlet of the r-th stage heater, t 5 is the feed water enthalpy at the inlet of the first stage high pressure heater, and η r is the extraction efficiency of the rth stage heater.

第r级加热器抽汽效率ηr为：The extraction efficiency η r of the r-th stage heater is:

Figure BDA0002981143090000051
Figure BDA0002981143090000051

其中，Hr为加热器r对应的抽汽等效焓降，qr为1kg抽汽在加热器r中的放热量。Among them, H r is the equivalent enthalpy drop of the extraction steam corresponding to the heater r, and q r is the heat release of 1 kg of extraction steam in the heater r.

机组给水旁路的流量满足：The flow rate of the feed water bypass of the unit satisfies:

Ty-ΔTy≥TSCR (3)T y -ΔT y ≥T SCR (3)

其中，Ty为给水旁路投运前SCR入口烟温，ΔTy为给水旁路投运前后SCR入口烟温降低值，TSCR为SCR达标要求的入口烟温最小值。Among them, Ty is the SCR inlet flue gas temperature before the feed water bypass is put into operation, ΔT y is the drop value of the SCR inlet flue gas temperature before and after the feed water bypass is put into operation, and T SCR is the minimum inlet flue temperature required for the SCR to reach the standard.

给水旁路投运前后SCR入口烟温降低值ΔTy为：The reduction value ΔT y of the flue gas temperature at the SCR inlet before and after the feedwater bypass is put into operation is:

Figure BDA0002981143090000052
Figure BDA0002981143090000052

其中，T1为高压加热器出口的给水温度，T3为给水旁路投运后主给水温度。Among them, T1 is the feedwater temperature at the outlet of the high pressure heater, and T3 is the main feedwater temperature after the feedwater bypass is put into operation.

给水旁路投运后主给水温度T3通过给水旁路给水的焓值确定，给水旁路给水的焓值与通过旁路的给水流量存在式(5)所示热量平衡：After the feedwater bypass is put into operation, the main feedwater temperature T3 is determined by the enthalpy value of the feedwater bypass. The enthalpy value of the feedwater bypass and the feedwater flow through the bypass have a heat balance as shown in formula (5):

h1*(Q-ΔQ)+h2*ΔQ＝h3*Q (5)h 1 *(Q-ΔQ)+h 2 *ΔQ=h 3 *Q (5)

其中，Q为主给水流量，h1为高压加热器出口的给水焓值，h2为给水旁路投运后给水旁路出口的给水焓值，h3为给水旁路投运后主给水焓值。Among them, Q is the main feed water flow, h 1 is the feed water enthalpy value of the outlet of the high pressure heater, h 2 is the feed water enthalpy value of the feed water bypass outlet after the feed water bypass is put into operation, h 3 is the main feed water enthalpy after the feed water bypass is put into operation value.

根据式(5)得调频需求的给水旁路流量ΔQ为：According to formula (5), the feedwater bypass flow ΔQ required by frequency regulation is:

Figure BDA0002981143090000053
Figure BDA0002981143090000053

根据式(3)～式(6)，以SCR要求的入口烟温为边界，计算给水旁路流量的最大值。According to equations (3) to (6), the maximum value of the feedwater bypass flow is calculated with the inlet flue gas temperature required by the SCR as the boundary.

利用本发明选取的给水旁路容量，可以在满足机组调频的基础之上，不影响锅炉烟气脱硝效果，保证机组在的安全稳定运行。Using the water supply bypass capacity selected by the present invention can satisfy the frequency regulation of the unit without affecting the denitrification effect of the boiler flue gas and ensure the safe and stable operation of the unit.

Claims (1)

1. A water supply bypass capacity selection method based on water supply bypass frequency modulation is characterized by comprising the following steps:
the method comprises the steps of obtaining the flow of a water supply bypass of a frequency modulation demand by taking the variable load demand of a unit as a target;
determining the maximum value of the flow of a water supply bypass for flue gas denitration by taking the standard reaching of the flue gas denitration of the unit boiler as a boundary;
determining the water supply bypass capacity meeting the water supply frequency modulation and denitration effects of the thermal power generating unit according to the maximum value of the water supply bypass flow required by frequency modulation and the water supply bypass flow for flue gas denitration, and finishing the selection of the water supply bypass capacity;
the bypass flow Δ Q of the feed water required for frequency modulation is:
Figure FDA0003733583890000011
where, Δ Q is the water supply bypass flow, Δ H is the variable load, r is the high pressure heater serial number, n is the serial number of the highest pressure one-stage high pressure heater, t r Is the feed water enthalpy at the outlet of the r-th stage heater, t 5 Is the feed water enthalpy value of the inlet of the 1 st stage high pressure heater r The steam extraction efficiency of the r-th stage heater;
extraction efficiency eta of r-th stage heater r Comprises the following steps:
Figure FDA0003733583890000012
wherein H r Is the equivalent enthalpy drop of the extracted steam corresponding to the heater r, q r The heat release of 1kg of extracted steam in the heater r;
the flow of the unit feed water bypass meets the following requirements:
T y -ΔT y ≥T SCR (3)
wherein, T y SCR inlet smoke temperature, Delta T, before commissioning of feedwater bypass y For SCR inlet smoke temperature reduction value, T, before and after commissioning of water supply bypass SCR The minimum value of inlet smoke temperature required by SCR reaching the standard;
SCR inlet smoke temperature reduction value delta T before and after commissioning of water supply bypass y Comprises the following steps:
Figure FDA0003733583890000013
wherein, T 1 Is the feed water temperature at the outlet of the high pressure heater, T 3 The main water supply temperature after the water supply bypass is put into operation;
main water supply temperature T after water supply bypass operation 3 The enthalpy of the feed water by-pass is determined, and the enthalpy of the feed water by-pass and the flow rate of the feed water by-pass have heat balance shown in the formula (5):
h 1 *(Q-ΔQ)+h 2 *ΔQ＝h 3 *Q (5)
wherein Q is the main feed water flow, h 1 The enthalpy value of feed water at the outlet of the high-pressure heater h 2 The enthalpy value of the water supply at the outlet of the water supply bypass after the operation of the water supply bypass, h 3 The enthalpy value of the main water supply after the water supply bypass is put into operation,
the water supply bypass flow delta Q required by frequency modulation according to the formula (5) is as follows:
Figure FDA0003733583890000021
the maximum value of the feedwater bypass flow is calculated using the inlet flue gas temperature required for SCR as a boundary according to equations (3) to (6).
CN202110287616.1A 2021-03-17 2021-03-17 A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass Active CN112902135B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110287616.1A CN112902135B (en) 2021-03-17 2021-03-17 A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110287616.1A CN112902135B (en) 2021-03-17 2021-03-17 A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass

Publications (2)

Publication Number Publication Date
CN112902135A CN112902135A (en) 2021-06-04
CN112902135B true CN112902135B (en) 2022-09-13

Family

ID=76105603

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110287616.1A Active CN112902135B (en) 2021-03-17 2021-03-17 A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass

Country Status (1)

Country Link
CN (1) CN112902135B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2007201125B2 (en) * 2006-03-17 2008-03-13 Downer Energy Systems Pty Ltd A waste heat boiler (WHB) system
CN104595884A (en) * 2015-01-29 2015-05-06 上海上电电力工程有限公司 Flue gas temperature rise system for forced circulation of drum boiler to maintain normal operation of SCR (Selective Catalytic Reduction)
CN108843417A (en) * 2018-07-04 2018-11-20 西安热工研究院有限公司 The co-generation unit of complete thermoelectricity decoupling based on supercritical carbon dioxide circulation
CN108591041B (en) * 2018-07-06 2023-05-26 华能国际电力股份有限公司 Feedwater pump minimum flow recirculation valve control system and method
CN110056853A (en) * 2019-05-13 2019-07-26 国家电投集团电站运营技术（北京）有限公司 Boiler thermodynamic system and its control method

Also Published As

Publication number Publication date
CN112902135A (en) 2021-06-04

Similar Documents

Publication Publication Date Title
US11236633B2 (en) Solar aided coal-fired power generation system participating in primary frequency regulation and control method thereof
WO2020181675A1 (en) Flexible coal-fired power generation system, and operation method therefor
CN113586185B (en) A coal-fired boiler flue gas and steam combined heat storage deep peak regulation system and operation method
CN210197259U (en) A deep peak shaving device for thermal power plant
CN113623032B (en) A coal-fired boiler flue gas heat storage and power generation integrated system and operation method
CN113339775A (en) Thermal power deep peak regulation system and peak regulation method based on boiler side heat storage
CN107016168A (en) Combined cycle gas-steam turbine unit heating performance computational methods
CN209978005U (en) Primary frequency modulation control system for secondary reheating unit
CN107178398B (en) Thermoelectric decoupling system for improving energy utilization quality of thermal power plant
Lu et al. Dynamic modeling of thermal-supply system for two-by-one combined-cycle gas and steam turbine unit
CN111396154A (en) Coal-fired power generation unit thermodynamic system with additional supercritical carbon dioxide circulation
CN114991895A (en) Coal-fired power generating unit with coupled compressed air energy storage function and operation method thereof
CN114909193A (en) Thermal power generating unit flexible operation system based on molten salt heat storage
CN112902135B (en) A method for selecting water supply bypass capacity based on frequency modulation of water supply bypass
Fan et al. Primary frequency control optimization of coal-fired power plants with high-low position shafts: Employing a revised strategy with power-decoupling and feedforward-compensating
CN117685552A (en) Coal-fired unit and operation control method thereof
CN206695107U (en) Using the primary frequency modulation control system of feedwater throttling
CN214580977U (en) High-temperature ultrahigh-pressure reheating dry quenching boiler reheat steam temperature adjusting system
CN210889050U (en) A control system for ultra-supercritical secondary reheat unit to participate in primary frequency regulation of power grid
CN212298914U (en) System for participating in thermal power deep peak regulation by utilizing solid heat storage device
JP4349133B2 (en) Nuclear power plant and operation method thereof
CN113217130B (en) Deaerator and condenser hot well capacity selection method based on condensed water frequency modulation
CN118463681B (en) System and method for improving flexibility of thermal power generating unit by utilizing molten salt heat storage
CN111622814A (en) Energy-saving operation control method and system for low-pressure cylinder of steam turbine based on real-time online operation data
CN217270361U (en) A heat storage system for gas-steam combined cycle back pressure generator set

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