WO2013060083A1

WO2013060083A1 - Extraction condensing cogeneration and straight condensing thermal power joint scheduling system and method

Info

Publication number: WO2013060083A1
Application number: PCT/CN2011/085120
Authority: WO
Inventors: 龙虹毓; 吴锴; 杨玉龙
Original assignee: 西安交通大学
Priority date: 2011-10-23
Filing date: 2011-12-31
Publication date: 2013-05-02
Also published as: CN102510098A; CN102510098B

Abstract

An extraction-condensing cogeneration and straight-condensing thermal power joint scheduling system and scheduling method thereof, the scheduling system comprising a cogeneration unit (A), a straight condensing thermal power unit (B), a centralized heat absorption refrigerator (200), an air-conditioner (108), an electric energy meter, a refrigerating fan coil (110), a cold water consumption gauge (111), a second remote centralized controller (1122) acquiring the power consumption data detected by the electric energy meter and the cold water consumption data detected by the cold water consumption gauge (111), and a scheduling control device (115) controlling the operations of the cogeneration unit (A), the straight condensing thermal power unit (B), the air-conditioner (108) and the refrigerating fan coil (110) via a first, the second and a third remote centralized controllers (1121, 1122, 1123). By acquiring the pipeline distance from a user to a heat source, and utilizing the pipeline distance to jointly schedule the originally independently-operated condensing thermal power unit and the cogeneration unit, the scheduling system and the scheduling method thereof effectively reduce the total energy consumption of the two units, avoid wasting fuel, and enable the scheduling to be more timely and accurate.

Description

Combined dispatching system and method for extraction condensing cogeneration and pure condensing steam thermal power Technical field

The present invention relates to an urban integrated energy supply system, and more particularly, to a method for realizing the optimal control of the power system by using the dispatching of the refrigeration load.

Background technique

The existing power grid includes two power generation modes: one is the electricity generated by the combined heat and power unit alone, and the other is the electricity generated by the condensing thermal power unit alone. These two kinds of generator sets operate independently. Among them, the combined heat and power units provide end users with electrical energy and at the same time provide heating energy. Condensing thermal power units can only provide electricity to end users, and heat energy needs to be supplied by another thermal energy plant.

The physical state of the operation of the cogeneration unit is restricted by the operating condition diagram of "using heat to determine electricity". That is, under a certain amount of heat supply, there are restrictions on the minimum power generation and the maximum power generation. Figure 1 shows the operating conditions of the heat supply and power generation output of the steam turbine cogeneration unit model C12-3.43/0.490 (D56). Corresponding to the physical state of each heating extraction volume β, the cogeneration unit is allowed to have a minimum power output min and a maximum power output Λη _Χ . For a certain total grid load, under the condition that a certain heating load is met, the part of the cogeneration unit that is greater than the minimum power generation output, how much output is energy-saving?

The Chinese invention patent with the announcement number CN1259834C discloses a dual-source heating and air-conditioning system and a heating/cooling method using the system. This patent solves the problem of making full use of the electric energy produced by the cogeneration and heating energy.

The Chinese invention patent with the announcement number CN100580327C discloses a method and system for cogeneration of energy. The patent divides residential heating users into air conditioner heat pump heating and radiator heating users, and the combined heat and power unit separately provides electric power and heating heat to the above heating users for their winter heating needs to improve energy utilization.

It can be seen that the above two patents only solve the problem of how to effectively use the electricity and heat generated by the combined heat and power unit alone. However, it does not solve the problem of how to control the heating and power generation output of the cogeneration unit to save energy in the case of cooperation with a pure condensing thermal power unit.

Please refer to Figure 2, which is an existing thermal and thermal power dispatching plan. Coal-fired power plants are the main power plants in northern my country, accounting for more than 95%. In recent years, in order to meet heating and energy-saving needs, governments at all levels have vigorously promoted cogeneration technology. As a result, the power supply in the grid in northern my country is mainly composed of condensing cogeneration units and pure condensing thermal power units. During the summer cooling period, the grid's daily load peak-to-valley difference is relatively large: During the peak period, the cogeneration unit that undertakes the cooling task has a maximum power generation output limit, and cannot increase the power generation output to undertake the peak shaving task. During the low power load period at night, the average load rate of the whole network is usually only 50%~60%: The cogeneration unit undertakes the heating task and has a minimum power generation requirement, which brings difficulties to the grid dispatching, and the grid needs to dispatch pure condensing thermal power units Provide peak shaving auxiliary services. In the "Implementation Rules for the Management of Auxiliary Services for Grid-connected Power Plants in the Northwest Region (Trial)", for large-scale pure condensing thermal power units (such as 300 MW), the basic peak shaving ranges from 60% to the rated capacity. This peak shaving method causes high coal consumption losses in low-load operation, and it is not energy-efficient from the perspective of the overall energy consumption of the power grid.

The warm hot water produced by the coal-fired steam extraction and condensing cogeneration unit is converted into cold water by a centralized heat absorption chiller. Due to the limitation of the transportation distance and the cold water flow rate, there is a certain distance to the user, and the output In the prior art, the distance between coal-fired steam extraction and steam condensing cogeneration units and heating users is not used to make a reasonable difference between coal-fired steam extraction and steam condensing cogeneration units and coal-fired users. The system and method for joint dispatching and control of pure condensing thermal power units make dispatching more timely and accurate, and avoid waste of energy.

Summary of the invention

The purpose of the present invention is to establish a combined heat and power dispatching system and its dispatching method, so that the system can reasonably control the coal-fired steam extraction and steam condensing cogeneration according to the distance between the coal-fired steam extraction and steam condensing cogeneration unit and the cold water user. Units and coal-fired pure condensing thermal power units are jointly dispatched to meet the end users' cold water supply and non-heating electricity demand, and to reduce total energy consumption to achieve energy-saving purposes.

In order to achieve the above objectives, a combined dispatching system of combined heat and power and pure condensing thermal power of the present invention adopts the following technical solutions:

A combined dispatching system for extraction condensing combined heat and power and pure condensing thermal power, including: Coal-fired extraction steam condensing cogeneration unit used to produce electricity and heating and hot water;

Coal-fired pure condensing thermal power unit used to produce electricity;

Centralized heat absorption chiller, connected to the hot water outlet of the coal-fired steam extraction and steam condensing cogeneration unit, and converts the hot water into cold water, which is passed into the heating pipeline;

An air conditioner connected in parallel with the coal-fired steam extraction condensing cogeneration unit and the coal-fired pure condensing thermal power unit through a power cable, and the air conditioner consists of the coal-fired steam extraction condensing cogeneration unit and The electric power generated by the coal-fired pure condensing thermal power unit generates refrigeration and cold wind;

Control the air conditioner remote switch of the air conditioner;

An electric meter that collects the user's non-cooling electricity consumption;

The cold water produced by the centralized heat absorption refrigerator flows into the refrigerating fan coil to generate refrigerating cold wind through a refrigerating fan coil connected to the centralized heat absorption refrigerator through a heating pipe;

The cooling water consumption meter of the cooling fan coil is used to detect the data of the cooling water consumption of the cooling fan coil; the remote control switch of the cooling fan coil water valve of the cooling fan coil is controlled;

The first remote centralized controller collects the heating output hot water flow of the coal-fired extraction steam condensing cogeneration unit, and generates electricity output; and collects the heating output hot water of the coal-fired extraction steam condensing cogeneration unit The flow, the electricity output of power generation is transmitted to the integrated dispatching control device;

The second remote centralized controller, which records the pipeline distance information between the refrigeration fan coil and the coal-fired extraction steam condensing cogeneration unit; the second remote centralized controller collects the cold water detected by the refrigeration fan coil cold water consumption meter Consumption data, collect the user's non-cold water power consumption, and then transmit the pipeline distance information, the user's non-cold water power consumption, and cold water consumption data to the integrated dispatch control device;

The third remote centralized controller collects the power output of the coal-fired pure condensing thermal power unit; and transmits the collected power output of the coal-fired pure condensing thermal power unit to the integrated dispatch control device;

Comprehensive dispatch control device, from the heating output hot water flow of coal-fired extraction steam condensing cogeneration unit, the power generation output of coal-fired extraction steam condensing cogeneration unit, and the power generation of coal-fired pure condensing thermal power unit The power output, the pipe distance information of the user's refrigeration fan coil, the user's non-refrigeration power data and the user's cold water consumption data, generate a dispatch control signal; the first remote centralized controller receives the dispatch control signal sent by the integrated dispatch control device , And use the dispatch control signal to control the action of the coal-fired cogeneration unit control and execution device of the coal-fired extraction steam condensing cogeneration unit;

The second remote centralized controller receives the dispatch control signal sent by the integrated dispatch control device, and uses the dispatch control signal to drive the remote control switch of the air conditioner and the remote control switch of the cooling fan coil water valve respectively to perform actions;

The third remote centralized controller receives the dispatch control signal sent by the integrated dispatch control device, and uses the dispatch control signal to control the coal-fired pure-condensing thermal power unit's coal-fired pure-condensing thermal power unit to control the execution of the device.

The integrated dispatching control device is used to: Calculate the dispatching control signal of the heating output hot water flow and power generation output of the coal-fired extraction steam condensing cogeneration unit at each moment; Calculate the coal-fired pure condensing thermal power unit The dispatching control signal of the power output at each time; The dispatching control signal of the cooling power consumption of the air conditioner at each time is calculated; The cooling fan coil consumption of the end user at each time is calculated Dispatching control signal for the quantity of refrigeration and cold water;

The remote control switch of the cooling fan coil water valve is remotely coupled with the integrated dispatch control device through a second remote centralized controller;

The remote control switch of the air conditioner is remotely coupled with the integrated dispatching control device through the second remote centralized controller; the control execution device of the coal-fired extraction steam condensing cogeneration unit is remotely connected with the integrated dispatching control device through the first remote centralized controller The integrated dispatching control device is coupled; the coal-fired extraction steam condensing cogeneration unit control execution device controls the coal-fired feed gate, the boiler steam inlet valve, and the heating system connected to it according to the obtained dispatch control signal The steam extraction valve and power generation steam flow valve act.

The integrated dispatching control device includes: receiving user non-air-conditioning refrigeration power consumption data, user cold water consumption data, user pipeline distance information, heating output hot water flow of coal-fired extraction steam condensing cogeneration unit, and coal-fired extraction steam condensing The first data receiving unit for the power generation output of the steam-type cogeneration unit and the power generation output of the coal-fired pure condensing thermal power unit; will be connected A data decoder unit that decodes all received data; a data memory unit that stores all decoded data; a scheduling control signal calculation unit that generates a scheduling control signal; a signal encoder that encodes the scheduling control signal; And transmit the encoded scheduling control signal to the sending units of the first remote centralized controller, the second remote centralized controller, and the third remote centralized controller.

The coal-fired cogeneration unit control execution device includes a dispatch control signal transceiving code memory, a drive circuit, and a mechanical gear control device. The dispatch control signal is decoded by the dispatch control signal transceiving code memory to generate a coal-fired cogeneration unit dispatch control Instruction, the electric drive signal output by the drive circuit triggers the mechanical gear control device, and the mechanical gear control device controls the coal-fired feed valve operation of the coal-fired cogeneration unit, the operation of the heating steam extraction valve, and the power generation steam flow valve action.

The control execution device of the coal-fired pure condensing thermal power unit includes a dispatch control signal transceiving code memory, a drive circuit, and a mechanical gear control device. The dispatch control signal is decoded by the dispatch control signal transceiving code memory to generate a coal-fired pure condensing steam generator. The dispatching control command of the thermal power unit, through the electric drive signal output by the drive circuit, triggers the mechanical gear control device, and the mechanical gear control device controls the coal-fired feed valve action and power generation steam flow valve action of the coal-fired pure condensing thermal power unit.

The integrated dispatch control device is connected to the cloud computing service system through the power optical fiber, and drives the cloud computing computing service system to calculate to obtain the dispatch control signal; the integrated dispatch control device receives the dispatch control signal calculated by the cloud computing computing service system through the power optical fiber, Then, the dispatch control signal is issued to the first remote centralized controller, the second remote centralized controller, and the third remote centralized controller via the power cable or wireless transmission mode.

The second remote centralized controller includes an unrefrigerated electric meter pulse counter, a refrigerated cold water flow pulse counter, a pulse signal encoder converter, a metering signal amplifying transmitter, and a control signal receiving decoder and a control signal remote control transmitter connected to each other;

The pulse counter of the uncooled electricity meter is connected to the user's uncooled electricity meter, and is used to detect the user's uncooled power consumption data. The user's uncooled power consumption data is processed by the pulse signal encoder converter and the metering signal amplifying transmitter and then transmitted to the integrated dispatching control device;

The refrigeration cold water flow pulse counter is connected to the refrigeration fan coil cold water consumption meter, which is used to detect the cold water flow data of the refrigeration fan coil cold water consumption meter. The cold water flow data detected by the refrigeration cold water flow pulse counter is measured by the pulse signal encoder converter After the signal amplification transmitter is processed, the pipeline distance information between the refrigeration fan coil and the coal-fired extraction steam condensing cogeneration unit is transmitted to the integrated dispatching control device;

The control signal receiving decoder receives and decodes the dispatch control information sent by the integrated dispatch control device, and then sends the control signal to the air conditioner remote control switch and the cooling fan coil water valve remote control switch to perform actions through the control signal remote control transmitter.

A dispatching method for a combined dispatching system of combined heat and power and pure condensing thermal power includes the following steps-The dispatching method of a combined heat and power dispatch system of the present invention includes the following steps: 1.1), measuring the supply side:

The first remote centralized controller collects the power generation output of the coal-fired extraction steam condensing cogeneration unit in the time period of 0~T Χ ΔΓ

P _eHP (0 and heat output ; The sampling period is ΔΤ; T is the number of acquisitions, and T is a natural number;

The third remote centralized controller collects the power output of coal-fired pure condensing thermal power units during the time period of 0~TX ΔΓ1.2), and measures the user side: i=0~N, N is the number of users; each user has Air conditioners and refrigeration fan coils;

1.2.1), the second remote centralized controller collects the pipeline distances between N users and the heat source coal-fired extraction steam condensing cogeneration unit (A);

1.2.2), the second remote centralized controller collects the sampling frequency of non-cooling power consumption of N users in the time period of 0~TX ΔΓ Rate is ΔΓ;

1.2.3), the second remote centralized controller collects the cold consumption Hi (0) of the refrigeration fan coils of N users in the time period of 0~TX AT, the sampling frequency is ΔΓ;

1.2.4), The second remote centralized controller collects the installed capacity of air conditioners of N users;

2), calculation

2.1). The integrated dispatch control device (115) calculates the total power consumption during the time period:

2.2). According to the statistical analysis method of the total power consumption in each period calculated in step 2.1), predict the power load/L _d (0; coal-fired extraction steam condensing thermal power collected according to step 1) in the future period of time The heat output of the cogeneration unit (A) H _CHP (0, predict the heat output of the coal-fired extraction steam condensing cogeneration unit (A) for a period of time in the future H _mp (0;

2.3) User grouping: Calculate the equivalent distance between each user and the heat source =, do rounding operations, make =

Divide the same users into the same group, s _t =l, the total is L group, L is a natural number; V is the flow rate of cold water in the pipeline;

2.4). For the L groups obtained in step 2.3), calculate the total cooling load ₃₍₁ (/) and air conditioner capacity P of all users in each group respectively

H _load (/) =∑Η^,ί); Η tj) is the cooling load of user i at time ί;

_ΡΕΗΡ {1) =∑Ρ (: Ρ (is the capacity of the air conditioner of the J user;

3), control calculation

3.1), objective function:

The total energy consumption of the objective function / is:

f=f + + ₊ f

J J

/ _eHP is the power consumption of combined heat and power, in MWH; / _e ^p is the climbing energy consumption of combined heat and power, in MWH; / _CON is the power consumption of pure condensing thermal power units, in MWH; _c ^r ^ is Climbing energy consumption of pure condensing thermal power unit, in MWH; among which-a), power consumption of thermal power unit:

¾ _ΗΡ (0 is the adjusted combined heat and power heating output, in MW; i^jp) is the adjusted combined heat and power output, The unit is MW; k, m, c are the coal consumption coefficients of coal-fired extraction steam condensing cogeneration units;

b), Climbing energy consumption of cogeneration unit:

2T

— PCHPO — ¹ )) d _CHP is the climbing coal consumption coefficient of the coal-fired extraction steam condensing cogeneration unit;

C), power consumption of thermal power unit: b _cm (=

0.003313105 · p _cm (ή-0.082266676

/CON = ∑ 29.271·ρ _∞Ν (/)· (5) ί=(Γ+1) b _CON (t) is the adjusted coal consumption of pure condensing thermal power unit in g/kWh _; p _∞N W is The power output of the pure condensing thermal power unit after adjustment, the unit is MW;

d), Climbing energy consumption of thermal power unit:

2T

. CON-∑ ^CON '(VON —PCON (卜1)) (6) d _cm is the climbing coal consumption coefficient of the thermal power unit;

3.2), constraint equation

3.2.1), power load balance

p _EHFs (t) is the sum of cooling power consumption of all user air conditioners at time t after adjustment, in MW;

3.2.2), cooling load balance equation

A/i( = |H _CHP (A _H p( | (8) Ah(t) = ^h _EHP (t + l,l) (T<t + l<2T) (9)

1=0 where: ¾ _HP (/十/, /) is the sum of the cooling power of user/group air conditioners at time +/, in MW; ¾ _HP ,/) is the cooling power of user/group air conditioners at time t The sum of power, in MW; H _CHP (step 2.2) predicts the heat output of coal-fired extraction steam condensing cogeneration unit during Z period;

3.2.3), Constraints of extraction condensing thermal power unit:

Lower limit of power output:

Maximum power output-

PCHP (― I CHP · ^CHP (0 + ¾HP (11) Power output limit-^CHP (0 <Paw (0≤ Pew (0 (12) Heating output limit:

5<h _CHP (t)<hc^(t) ₁₃ ) where & C, /CTP 'C is the operating condition curve parameter of the thermal power unit; ^ ^Η _Ρ ) is the coal-fired extraction steam condensing cogeneration unit in the period t The lower limit of the electric output; the upper limit of the electric output of the coal-fired extraction steam condensing cogeneration unit during the t period; the upper limit of the heating output of the coal-fired extraction steam condensing cogeneration unit during the t period;

3.2.4), the constraints of purely condensing thermal power units:

_{p- <p C0N (t) <} p- (14) wherein a pure condensing steam generator thermal power output limit, as a unit _MW; pure condensing steam generator thermal power output limit, in units of MW;

3.2.5), User-side air conditioner constraints:

Heat-to-electricity ratio constraint:

^HP (,, 0 = COP _EW · p _EHF (t,l) (15) Maximum output of air conditioner:

_{0≤ p EW (t, l)} ≤ mi n (P EHP (/), H load (/) / COP EHP) (16) wherein, P _EHP (/) for the first user group J and of the air conditioner capacity, The unit is MW; H _lDad (/) is the refrigeration load of the user in group J, and the unit is MW; COP _EHP is the coefficient of performance of the air conditioner; AHP^,/) is the sum of the power consumption of the air conditioner of the user in the t period, The unit is MW;

The sum of power consumption of air conditioners for all user groups in each time period:

PEHPS( ( ¹⁷ )

Directly collect the variables ^ _Ρ (0, P _C0N (t) in step 1); calculate the variables in step 2), H _cw (t), H _load (/), P _mp (〖) is substituted into formulas 1~17 and jointly solved. When the total energy consumption of the objective function/ is the minimum value, the optimized execution variable cogeneration power generation output/ ¾HP W, cogeneration heat output/ ¾ _ηρ (0, the user’s power consumption of the air conditioner at different times

P _BW (t, /) and cooling power ¾HP (t, I), power generation output of thermal power unit ρ _∞Ν (0;

4) Send control signals to the supply and the user to perform actions:

The integrated dispatch control device sends variable signals to the first remote centralized controller, the third remote centralized controller and the user's second remote centralized controller on the supply side according to the execution variables obtained after optimization in step 3), and specifically executes the following actions -

Α. Cogeneration power generation output; ^jp) and heat output^ _Ρ (0 signal, control the actions of the cogeneration in each period of time during the future adjustment time; Β. User power consumption of the air conditioner at different times

/) and cooling power / ¾ _ΗΡ ^,/), to control the cooling capacity of air conditioners used by users at different distances on the user side, and the amount of fan _coils turned off; C. The power output of thermal power units is p ∞N W signal to control the future adjustment of thermal power units Actions in each period of time.

Now for the prior art, the beneficial effects of the present invention are as follows: The present invention uses the combined heat and power unit and the pure condensing gas thermal power unit to generate power to provide electric energy to the end user; the hot water produced by the cogeneration unit is converted into cold water The fan coil unit is then provided to the end user; the present invention collects the pipeline distance from the user to the heat source, and utilizes the pipeline distance to reasonably dispatch the condensing-type thermal power unit and the cogeneration unit that operate independently, so that the power load is involved. During off-peak hours energy-saving dispatch and low-peak hours energy-saving peak shaving, adjust the fuel consumption of cogeneration units, power generation and heating output, and fuel consumption of pure condensate thermal power units according to the end user’s load energy requirements And power generation output, end-user’s air conditioner cooling power consumption, and end-user’s fan coil cooling power, to achieve comprehensive energy-saving dispatch and peak shaving of power grids and heating networks; and effectively reduce cogeneration units and pure condensation The total energy consumption of gas-fired thermal power units avoids wasting fuel resources and at the same time makes dispatching more timely and accurate.

Description of the drawings

Figure 1 is a diagram of the operating conditions of heating and power generation of a cogeneration unit in the prior art; Figure 2 is a diagram of the original thermal power dispatching plan;

Figure 3 is a schematic diagram of the connection of the combined heat and power dispatch system of the present invention;

Figure 4 is a schematic diagram of the structure of the second remote centralized controller;

Figure 5 is a schematic diagram of the structure of the execution device of the cogeneration unit;

Figure 6 is a schematic diagram of the structure of the executive device of a purely condensing gas thermal power unit;

Figure 7 is a schematic diagram of the structure of the integrated dispatch control device;

Figure 8 is a schematic diagram of the structure of a control signal generating unit composed of an integrated dispatch control device and a cloud computing service system;

Fig. 9 is a flowchart of the scheduling method of the present invention;

Fig. 10 is a thermal power dispatching diagram after using the dispatching method of the present invention;

Fig. 11 is an energy-saving efficiency diagram of air conditioners with different performances after using the scheduling method of the present invention.

Detailed ways

The specific embodiments of the present invention will be described below in conjunction with the drawings.

Please refer to Figure 3, a combined dispatching system of condensing cogeneration and pure condensing thermal power of the present invention includes: a coal-fired extraction condensing cogeneration unit A for producing electricity and heating hot water;

Coal-fired pure condensing thermal power unit B used to produce electricity;

The centralized heat absorption chiller 200 is connected to the hot water outlet of the coal-fired extraction steam condensing cogeneration unit A, and converts the hot water into cold water, which is passed into the heating pipe 114; in the present invention, the centralized heat absorption type The conversion efficiency of the refrigerator 200 is 0.7-1.3, which can be adjusted, and 1.0 is preferred in the present invention. The air conditioner 108 is connected in parallel with the coal-fired extraction steam condensing cogeneration unit A and the coal-fired pure condensing thermal power unit B through a power cable 113. The air conditioner 108 is powered by the coal-fired extraction steam condensing unit The electric energy generated by cogeneration unit A and coal-fired pure condensing thermal power unit B generates refrigeration and cold wind;

The special electric energy meter 109 for the air conditioner is used to detect the power consumption data of the air conditioner 108 for heating;

Air conditioner remote control switch 117 for controlling air conditioner 108;

An electric meter that collects the user's non-cooling electricity consumption (not shown);

The refrigeration fan coil 110 connected to the centralized heat absorption chiller 200 through the heating pipe 114, the hot water produced by the centralized heat absorption chiller 200 flows into the refrigeration fan coil 110 and passes through the refrigeration fan coil 110. The blower blows out cold air to produce refrigerated cold air to meet user needs;

Refrigeration fan coil cold water consumption meter 111, used to detect the data of the cold water consumption of the refrigeration fan coil 110; control the refrigeration fan coil water valve remote switch 116 of the refrigeration fan coil 110:

The first remote centralized controller 1121 collects the fuel input, steam intake, heating output hot water flow, and power generation output of coal-fired extraction steam condensing cogeneration unit A; and condenses the collected coal extraction steam The amount of fuel input, steam intake, heating output, hot water flow, and power output of steam-type cogeneration unit A are sent to the integrated dispatch control device 115; the second remote centralized controller 1122 collects the air conditioner special electric energy meter 109 to detect Record the pipe distance information between the refrigeration fan coil 110 and the coal-fired extraction steam condensing cogeneration unit A; collect the cold water consumption data detected by the refrigeration fan coil cold water consumption meter 111; The power consumption data of the air conditioner, the pipe distance information of the cooling fan coil 110, and the cold water consumption data are transmitted to the integrated dispatch control device 115;

The third remote centralized controller 1123 collects the fuel input volume, steam intake volume and power output of coal-fired pure condensing thermal power unit B; and collects the collected fuel input volume of coal-fired pure condensing thermal power unit B , Steam intake and power output are transmitted to the integrated dispatch control device 115;

Integrated dispatch control device 115, which consists of the heating output hot water flow of coal-fired extraction steam condensing cogeneration unit A, the power generation output power of coal-fired extraction steam condensing cogeneration unit A, and coal-fired pure condensing thermal power The power generation output of unit B, the pipe distance information of the user's refrigeration fan coil 110, the user's non-refrigeration power consumption data, and the user's cold water consumption data, to generate a dispatch control signal;

The first remote centralized controller 1121 receives the dispatch control signal sent by the integrated dispatch control device 115, and uses the dispatch control signal to control the coal-fired cogeneration unit control execution device 118 of the coal-fired extraction steam condensing cogeneration unit A. ；

The second remote centralized controller 1122 receives the dispatch control signal sent by the integrated dispatch control device 115, and uses the dispatch control signal to drive the air conditioner remote control switch 117 and the refrigeration fan coil water valve remote control switch 116 to execute the switch operation;

The third remote centralized controller 1123 receives the dispatch control signal sent by the integrated dispatch control device 115, and uses the dispatch control signal to control the coal-fired pure-condensing thermal power unit B's coal-fired pure-condensing thermal power unit control execution device 119 to act.

Referring to FIG. 3, in a specific embodiment in accordance with the present invention, a coal-fired extraction steam condensing cogeneration unit A is used to generate electricity and heat and hot water. The coal-fired extraction steam condensing cogeneration unit A includes a boiler 104, a turbine 105, a heating network heater 106, and an alternator 107. Among them, the boiler 104 burns fuel to obtain heating heat energy to heat steam, and sends saturated hot steam through the steam pipe to the turbine 105 to obtain mechanical energy. The mechanical energy drives the alternator 107 to generate electrical energy, and the cogeneration unit generates waste heat which is sent to the heating network heater 106 Production of hot water for heating. Among them, the heat engine adopts the steam Rankine cycle, or the Brayton-Rankine combined heat cycle with the steam Rankine cycle as the bottom cycle, and the water supply temperature can be adjusted in the range of 65~80°C. The electrical energy generated by the alternator 107 is transmitted to the end user's air conditioner 108 and other electrical appliances (such as lighting appliances, power sockets, and household appliances) through the transmission line 113. The air conditioner 108 at the end user is driven by electric energy to provide heating for the end user who uses the air conditioner 108. The hot water produced by the heating network heater 106 is delivered to the fan coil 110 of the end user through the heating pipe 114 to provide heating and heating. Coal-fired extraction steam condensing cogeneration unit A is equipped with input steam valve①, heating output steam extraction valve② and power generation steam valve③.

Coal-fired pure condensing thermal power unit B is used to produce electricity. Coal-fired pure condensing thermal power unit B includes boiler 101, turbine

102 and the alternator 103. The boiler 101 burns fuel to obtain heating energy and sends it to the turbine 102 to obtain mechanical energy through the pipeline. The mechanical energy drives the alternator 103 to generate electrical energy. The electrical energy generated by the alternator 103 is transmitted to the air conditioner 108 and other electrical appliances of the end user through the power transmission line 113. The air conditioner 108 at the end user can provide heating and heating for the air conditioner user driven by electric energy. Coal-fired pure condensing thermal power unit B also includes a valve ④ for controlling the amount of input steam.

The air conditioner 108 at the end user is connected in parallel with the coal-fired extraction steam condensing cogeneration unit A and the coal-fired pure condensing thermal power unit B through the transmission line 113. The coal-fired extraction steam condensing cogeneration unit A and The electric energy generated by the coal-fired pure condensing thermal power unit B jointly drives the air conditioner 108 to generate refrigerating cold air, which in turn provides refrigeration for air-conditioning users. The air conditioner 108 also includes an air conditioner switch ⑤.

Please refer to FIG. 3, the electric energy meter 109 is coupled with the air conditioner 108; the air conditioner remote control switch 117 is connected to the air conditioner 108, and is used to control the switch of the air conditioner 108. The electric energy meter 109 is separately connected to the air conditioner 108 through a wire, and is used to detect the cooling power consumption data of the air conditioner 108. The refrigerating fan coil 110 is connected to the centralized heat absorption chiller 200 through the heating pipe 114, and the cold water produced by the centralized heat absorption chiller 200 generates cooling and cold air. The cold water consumption meter 111 is coupled with the fan coil 110 and is used to detect the cooling consumption data of the fan coil 110. The refrigerating fan coil 110 is equipped with a switch door ⑥. The second remote centralized controller 1122 collects the power consumption data detected by the special electric energy meter 109 for the air conditioner and transmits it to the integrated dispatch control device 115; collects the hot water consumption data detected by the cooling fan coil cold water consumption meter 111, and records the cooling The pipeline distance information between the fan coil 110 and the coal-fired extraction steam condensing cogeneration unit A, and then the cold water consumption data and pipeline distance information are transmitted to the integrated dispatching control device 115.

Please refer to Figure 4, the second remote centralized controller 1122 includes an air-conditioning electric meter pulse counter, an uncooled electric meter pulse counter (not shown), a refrigerated cold water flow pulse counter, a pulse signal encoder converter, a metering signal amplifier transmitter, and control Signal receiving decoder and control signal remote control transmitter; Air-conditioning meter pulse counter is connected to the air-conditioning special electric energy meter 109, used to detect the power consumption data detected by the air-conditioning electric energy meter 109, and the power consumption data pulse signal detected by the air-conditioning electric meter pulse counter The code converter and the metering signal amplifying transmitter are processed and sent to the integrated dispatching control device 115;

The pulse counter of the uncooled electricity meter is connected to the user's uncooled electricity meter, and is used to detect the user's uncooled power consumption data (that is, the user's power consumption data except for the air-conditioning power consumption). The user's uncooled power consumption data passes through the pulse signal encoder converter and the metering signal The amplified transmitter is processed and sent to the integrated dispatch control device 115;

The refrigeration cold water flow pulse counter is connected to the refrigeration fan-coil cold water consumption meter 111 to detect the cold water flow data of the refrigeration fan-coil cold water consumption meter 111. The cold water flow data detected by the refrigeration cold water flow pulse counter is passed through a pulse signal encoder converter After processing by the metering signal amplification transmitter and the pipeline distance information between the refrigeration fan coil 110 and the coal-fired extraction steam condensing combined heat and power unit A, it is transmitted to the integrated dispatching control device 115;

The control signal receiving decoder receives and decodes the dispatch control information sent by the integrated dispatch control device 115, and then sends the control signal to the air conditioner remote control switch 117 and the cooling fan coil water valve remote control switch 116 through the control signal remote control transmitter to perform actions .

The first remote centralized controller 1121 collects the fuel input, steam intake, heating output hot water flow, and power generation output of coal-fired extraction steam condensing cogeneration unit A, and condenses the collected coal extraction steam The fuel input amount, steam intake amount, heating output hot water flow, and power generation output of steam-type cogeneration unit A are transmitted to the integrated dispatching control device 115.

The third remote centralized controller 1123 collects the fuel input volume, steam intake volume and power output of coal-fired pure condensing thermal power unit B, and collects the collected fuel input volume of coal-fired pure condensing thermal power unit B, The steam intake and the power output are transmitted to the integrated dispatch control device 115.

5, the coal-fired cogeneration unit control execution device 118 includes a dispatch control signal transceiving encoding memory 302, a drive circuit 303, and a mechanical gear control device 304. The dispatch control signal is decoded by the dispatch control signal transceiving encoding memory 302 Later, a coal-fired cogeneration unit dispatch control command is generated, and the electric drive signal output by the drive circuit 303 triggers the mechanical gear control device 304, and the mechanical gear control device 304 then controls the input of the coal-fired extraction steam condensing cogeneration unit A The steam volume valve ① operates, the heating output steam extraction volume valve ② operates, and the power generation steam volume valve ③ operates. In order to control the fuel input of coal-fired extraction steam condensing cogeneration unit A, the extraction steam flow for heating purposes and the steam flow for power generation purposes. Please refer to Figure 6. The coal-fired pure condensing thermal power unit control execution device 119 includes dispatch control signal transceiver Encoding memory

402. A drive circuit 403 and a mechanical gear control device 404, where the dispatch control signal is sent and received by the dispatch control signal and stored in code. After decoding, the storage 402 generates a coal-fired pure condensing thermal power unit dispatch control command, and the electric drive signal output by the drive circuit 403 triggers the mechanical gear control device 404, and the mechanical gear control device 404 then controls the coal-fired pure condensing thermal power unit B's input steam quantity ceramic door ④ moves. So as to control the power generation output of coal-fired pure condensing thermal power unit B.

Referring to Fig. 7, the integrated dispatching control device 115 includes:

Receive user non-cooling power consumption data, user cold water consumption data, user pipeline distance information, heating output and hot water flow of coal-fired extraction steam condensing cogeneration unit A, and coal-fired extraction steam condensing cogeneration unit A The first data receiving unit 201 for power generation output power and the power generation output power of coal-fired pure condensing thermal power unit B; data decoder unit 202 that decodes all received data; data that stores all the decoded data A memory unit 203; a scheduling control signal calculation unit 204 that generates a scheduling control signal; a signal encoder 205 that encodes the scheduling control signal; and transmits the encoded scheduling control signal to the first remote centralized controller 1121 The sending unit 206 of the remote centralized controller 1122, the third remote centralized controller 1123.

8, the integrated dispatch control device 115 is connected to the cloud computing service system 917 through the power optical fiber 120, and drives the cloud computing computing service system 917 to calculate to obtain the dispatch control signal; the integrated dispatch control device 115 receives the cloud through the power optical fiber 120 The computing and computing service system 917 calculates and obtains the dispatch control signal, and then releases the dispatch control signal to the first remote centralized controller, the second remote centralized controller, and the third remote centralized controller via a power cable or wireless transmission.

Referring to Figures 3 to 9, the dispatching method of the combined heat and power dispatching system of the present invention includes the following steps:

1.1), measurement supply side:

_{The first remote centralized controller (1121) collects the power generation output HP} (0 and heat output H _CTP (0: sample period is ΔΓ) of the coal-fired extraction steam condensing cogeneration unit (A) during the time period of 0 T Χ _ΔΓ; T is the number of acquisitions, and T is a natural number;

_{The third remote centralized controller (1123) collects the power generation output P C} of the coal-fired pure condensing thermal power unit (B) in the time period of 0 T Χ ΔΓ. _N W _;

1.2) Measure the user side: i=0~N, N is the number of users; each user has an air conditioner (108) and a cooling fan coil (110);

1.2.1), the second remote centralized controller (1122) collects N users away from the heat source coal-fired steam extraction condensing steam-condensing cogeneration unit

(A) Pipe distance

1.2.2), the second remote centralized controller (1122) collects the non-cooling power consumption (0, sampling frequency is Δ) of N users in the time period of 0 to T Χ ΔΓ;

1.2.3). The second remote centralized controller (1122) collects the cold consumption Hi (0) of the refrigeration fan coil (110) of N users in the time period of 0~TX ΔΓ, and the sampling frequency is Δ;

1.2.4), the second remote centralized controller (1122) collects the air conditioner (108) installed capacity i ^{HP of} N users; 2), calculate

2.1). The integrated dispatch control device 115 calculates the total power consumption of all uses:

2.2) The respective time step ho total power consumption calculated 2.1 um), using known statistical analysis _{_{SPSS (Stati S ti ca l Product}} and Service Solutions) or multiple regression method of statistical analysis methods, prediction (Τ ~ 2Τ) Χ ΔΓ time period Electricity load ^ LdW; According to step 1) the heat output H _CHP () of coal-fired extraction steam condensing cogeneration unit (A), predict (Τ~2Τ) Χ ΔΓ coal-fired extraction steam condensing thermal power _{The heat output H eHP} () of the co-generation unit (A _);

2.3) User grouping: Calculate the equivalent distance between each user and the heat source ^ and do rounding operation, so that = vxAT

The same users are divided into the same group, =1, divided into 0,,, /,,, L group, counted as L group, L is a natural number;! Is the flow rate of cold water in the pipeline; ΔΓ is the unit adjustment time min, that is, the period during which the integrated scheduling control device sends out the control signal. In the present invention, the unit adjustment time is equal to the sampling period;

2.4), for the L groups obtained in step 2.3), obtain the total refrigeration load H _{1 ()ad} (/) and air conditioner capacity P _ffi (/) of _{all users in each group respectively;}

H _load (/) = ∑H _; (; Η. ί,Ι is the cooling load of the user i at ί; ρ _ΕΗΡ {ΐ) ρπη is the air conditioner capacity of the user i;

3), control calculation

3.1), objective function:

The total energy consumption of the objective function / is:

f—f ^*ramp, _, /ramp,

J VCHP CHP CON CON ^A C _HP is the power consumption MWH for the combined heat and power; the climbing energy consumption for the combined heat and power MWH: / _CON is the power consumption MWH for the pure condensing thermal power unit; the climbing energy consumption for the pure condensing thermal power unit MWH; The purpose of the scheduling method of the present invention is to minimize the value of the total energy consumption of the objective function, so as to achieve the purpose of energy-saving scheduling.

details as follows:

a) Power consumption of thermal power unit:

τ

fan> =∑(^-^CHP (+ w- ^ _CH p (t) + c)-AT (2) ½ _Ρ (0 is the adjusted CHP heating output MW _; ^Hp) is the adjusted CHP Generate power output MWH; k, m, c are the coal consumption coefficients of coal-fired extraction steam condensing cogeneration unit A;

b). Thermal power unit climbing energy consumption: few = ί= Σ ^CHP · (PCHP (0-¾HP (卜丄)) ( ³ ) (Τ+1) t is a coal-fired extraction steam condensing cogeneration unit A's climbing coal consumption coefficient;

C), Power consumption of thermal power unit:

0.003313105 · p _cm (ή-0.082266676

∑ 29.271·ρ _∞Ν (·έ _∞Ν (·ΔΓ (5) ί=(Γ+1) b _CON (0 is the coal consumption for power generation of pure condensing steam and thermal power units after adjustment _g /kWh _; p _CON (is the pure after adjustment MW of power generation output of condensing steam thermal power unit B;

d), the energy consumption of thermal power unit climbing:

∑ ^d c ·0∞ _Ν (Ή∞ _Ν (卜(6) ί _∞Ν is the climbing coal consumption coefficient of the thermal power unit (B);

3.2), constraint equation

3.2.1), power load balance

^cad (0 + ^EHPs (0 (0 + (0 (7) p (ί) is the sum of cooling power consumption of all user air conditioners at time t after adjustment, the unit is MW;

3.2.2), cooling load balance equation

The core of the method is the insufficient power of the air conditioner to use electric refrigeration instead of cogeneration of hot water to convert the output of hot water into cold water. If Δ/^) represents the insufficient power of the cogeneration of hot water during the period, bei”, its expression is:

Ah(0 = lN _CHF (0-k ₍ (8) Insufficient supply of chilled water for CHP in the Z period is obtained by the use of air conditioners for cooling by each user group. Due to the delay of chilled water transmission, the impact of insufficient chilled water is also affected. There is a delay, and this delay varies with the distance of the user group. For example, divide all users into approximately 0,1,..,/,..J user groups. For the first user group, cold water flow The time until it is a unit scheduling time, so the lack of hot water will also affect the first user group in the first period, and similarly, the lack of hot water will affect the first user group at t+1. As mentioned, the insufficient hot water supply in the t-th period of time will be compensated by the air conditioners of the 0~L user group through electricity consumption during the period t~ (t+L). The specific formula is:

Among them: /¾ _HP o+/,/) is the cooling power of the air conditioner of the user/group at time/time, the unit is Mw _; t, is the sum of the cooling power of the air conditioner of the user group I at time t, and the unit is MW; H _CHP (step 2.2) predicts the heat output of coal-fired extraction steam condensing cogeneration unit (A) period;

If ¾ _ΗΡ (ί,/) in the formula can be set to 0, on the one hand, not all user groups participate in compensation in certain periods; on the other hand, On the one hand, if the specified total scheduling time is exceeded, and the insufficient cold water supply has not affected the remote user groups, then these user groups will not participate in compensation.

3.2.3), Constraints of extraction condensing thermal power unit:

Lower limit of power output:

Maximum power output:

Power output restriction:

Heating output constraints:

5≤K)≤) ( ₁₃ ) where /, ", /;, "S^p is the _{operating curve parameter of the thermal power unit, ρ Ρ} ) is the power output of the coal-fired extraction steam condensing cogeneration unit during the t period Lower limit; ρ (ή is the upper limit of the electric output of coal-fired extraction steam condensing cogeneration units during t; is the upper limit of heating output of coal-fired extraction steam condensing cogeneration units during t; and in order to avoid cogeneration When the heating output of the unit is 0, it takes time to restart. In formula (13), the lower limit of the heating output is limited to 5MW. At the same time, it is mentioned in the method overview section that in order to ensure that the thermal power unit can still meet the original regional power load demand, you can In addition, the power generation output of the combined heat and power generation is restricted to be greater than the original planned power generation output-

3.2.4), the constraints of purely condensing thermal power units:

^<^ ₀ ,( <^ (14) where is the upper limit of power generation output of pure condensing thermal power units, in MW _{; c} ^m ₀ ^ is the lower limit of power generation output of pure condensing thermal power units, in MW;

3.2.5), User-side air conditioner constraints:

Heat-to-electricity ratio constraint: {t, I) = COP _EW · p _EHP (t,l) (15) Upper limit of air conditioner output:

0 ≤ p _EW (t,l) ≤ min (P _EW (l), H _lmA (l)/COP _EW ) (16) where _ΡΕΗΡ ^ is the sum of the air conditioner capacity of the user in the group, the unit is MW; H _lmd (/) is for group J users Refrigeration load, in MW _; COP _EHP is the coefficient of performance of the air conditioner; HP ,/) is the sum of the power consumption of the air conditioner of the user in the t period, in MW;

Finally, the power consumption and refrigeration of the air conditioner can not only compensate for the lack of cold water cooling, but also increase the load during the low power period. Therefore, the sum of the power consumption of the air conditioners of all user groups at each time period needs to be required:

_{Substitute the} _{variables /L d} W, H _CHF (t), H _load (/), i ^ _P (/) calculated in step 1) into the control calculations, and the calculation variables /L d W, H CHF (t), i^ P (/) in step 1) ~17 for joint solution, when the total energy consumption of the objective function/is the minimum value, the optimized execution variable cogeneration power generation output p _eHP (0, cogeneration heat output ½ _Ρ (0, user air conditioner at different times) Power consumption / ¾ _HP (t, /) and cooling power / ¾ _HP (t, I), thermal power generation output _∞Ν (0;

4) Send control signals to the supply and the user to perform actions:

The integrated dispatch control device 115 sends variable signals to the first remote centralized controller 1121 on the supply side and the third remote centralized controller 1123 and the second remote centralized controller 1122 of the user according to the execution variables obtained after optimization in step 3). Perform specific actions as follows −

Α. Combined heat and power generation output; 7 _eHP ) and heat output fc _HP ) signals to control the actions of the combined heat and power at each time period in the future regulation time;

B.

, Control the cooling capacity of the air conditioner used by users at different distances on the user side, and turn off the fan coil;

C. Thermal power generation output; ¾. _{The N} W signal controls the actions of the thermal power unit in each period of time during the future adjustment time. In the present invention, in step 1), t is the collection time period, tG 0~T _{; in} steps 3) and 4), t is the scheduled time period, te (T+1) ~ 2T.

Please refer to Fig. 10, for the thermal power and thermal power dispatching diagram after using the dispatching method of the present invention, using this method can realize that thermal power generators participate in peak shaving, thermal power bears the base load, and the total energy consumption is reduced.

Please refer to FIG. 11, which is a graph of energy saving efficiency of air conditioners with different performances after using the scheduling method of the present invention. It can be seen from the figure that the energy saving effect of the air conditioner is obvious after using the scheduling method of the present invention.

The above specific embodiments are only used to illustrate the present invention, but not to limit the present invention.

Claims

1. A combined dispatching system for combined heat and power and pure condensing thermal power, characterized in that it includes:

Coal-fired extraction steam condensing cogeneration unit (A) for the production of electricity and heating and hot water;

Coal-fired pure condensing thermal power unit (B) used to produce electricity;

Centralized heat absorption chiller (200), connected to the hot water outlet of the coal-fired extraction steam condensing combined heat and power unit (A), and converts the hot water into cold water, which is passed into the heating pipeline (114);

An air conditioner (108) connected in parallel with the coal-fired extraction steam condensing cogeneration unit (A) and the coal-fired pure condensing thermal power unit (B) through a power cable (113), the air conditioner (108) Driven by the electric energy generated by the coal-fired extraction steam condensing cogeneration unit (A) and the coal-fired pure condensing thermal power unit (B) to generate refrigeration cold wind;

Air conditioner remote control switch (117) for controlling the air conditioner (108);

An electric meter that collects the user's non-cooling electricity consumption;

The cooling fan coil (110) connected to the centralized heat absorption refrigerator (200) through the heating pipe (114), the cold water produced by the centralized heat absorption refrigerator (200) flows into the refrigerator Refrigeration cold wind is generated in the fan coil (110);

A cooling water consumption meter (111) for the refrigeration fan coil unit (111) is used to detect the data on the cooling water consumption of the refrigeration fan coil unit (110);

The remote control switch (116) of the cooling fan-coil water valve for controlling the cooling fan-coil (110);

The first remote centralized controller (1121) collects the heating output hot water flow of the coal-fired extraction steam condensing cogeneration unit (A), and generates electricity output; and collects the collected coal-fired extraction steam condensing cogeneration unit (A) The heating output hot water flow of the unit (A), and the power output electricity are transmitted to the integrated dispatching control device (115);

The second remote centralized controller (1122), which records the pipeline distance information between the refrigeration fan coil (110) and the coal-fired extraction steam condensing cogeneration unit (A); the second remote centralized controller (1122) Collect the cold water consumption data detected by the refrigeration fan coil cold water consumption meter (111), collect the user's non-cooling power consumption, and then transmit the pipeline distance information, the user's non-cooling power consumption, and the cold water consumption data to the integrated dispatch control device (115) );

The third remote centralized controller (1123) collects the power output of the coal-fired pure condensing thermal power unit (B); and transmits the collected power output of the coal-fired pure condensing thermal power unit (B) to the comprehensive dispatcher Control device (115);

The integrated dispatching control device (115) consists of the heating output and hot water flow of the coal-fired extraction steam condensing cogeneration unit (A), the power generation output of the coal-fired extraction steam condensing cogeneration unit (A), and the The power generation output of the coal-condensing thermal power unit (B), the pipe distance information of the user's refrigeration fan coil (110), the user's non-refrigeration power consumption data and the user's cold water consumption data, to generate a dispatch control signal;

The first remote centralized controller (1121) receives the dispatch control signal sent by the integrated dispatch control device (115), and uses the dispatch control signal to control the coal-fired cogeneration of the coal-fired extraction steam condensing cogeneration unit (A) Unit control execution device (118) action;

The second remote centralized controller (1122) receives the dispatch control signal sent by the integrated dispatch control device (115), and uses the dispatch control signal to drive the air conditioner remote control switch (117) and the cooling fan coil water valve remote control switch (116) respectively Perform actions

The third remote centralized controller (1123) receives the dispatch control signal sent by the integrated dispatch control device (115), and uses the dispatch control signal to control the coal-fired pure condensing thermal power unit (B) of the coal-fired pure condensing thermal power unit Control the action of the actuator (119).

2. The combined dispatching system of extraction condensing combined heat and power and pure condensing thermal power according to claim 1, characterized in that the integrated dispatching control device (115) is respectively used for: calculating the coal-fired extraction steam condensing The dispatching control signal of the heating output hot water flow and the electricity output of the cogeneration unit (A) at each time; the dispatch control of the electricity output of the coal-fired pure condensing thermal power unit (B) at each time is calculated Signal; Calculate the dispatch control signal of the cooling power consumption of the air conditioner (108) at the end user at each time; Calculate the dispatch control signal of the cooling fan coil (110) consumption of the cooling water at each time of the end user at each time control signal;

The remote control switch (116) of the cooling fan coil water valve is coupled with the integrated dispatch control device (115) in a remote control manner through a second remote centralized controller (1122); Claims

The air conditioner remote control switch (117) is coupled with the integrated dispatch control device (115) in a remote control manner through the second remote centralized controller (1122);

The control execution device (118) of the coal-fired extraction steam condensing cogeneration unit is remotely coupled with the integrated dispatch control device (115) through the first remote centralized controller (1121); the coal-fired extraction steam condensing The steam-type cogeneration unit control execution device (118) controls the coal-fired feed ceramic door, boiler steam inlet valve 1, heating steam extraction valve, and power generation steam flow valve to operate according to the obtained dispatching control signal.

3. The combined dispatching system of combined heat and power combined with pumped condensing and pure condensing thermal power according to claim 1, characterized in that the integrated dispatching control device (115) comprises:

Receive user non-cooling power consumption data, user cold water consumption data, user pipeline distance information, heating output and hot water flow of coal-fired extraction steam condensing cogeneration unit (A), coal-fired extraction steam condensing cogeneration unit (A) the first data receiving unit (201) of the power output and the power output of the coal-fired pure condensing thermal power unit (B);

A data decoder unit (202) that decodes all received data;

A data memory unit (203) for storing all decoded data;

A scheduling control signal calculation unit (204) that generates a scheduling control signal;

A signal encoder (205) that encodes the scheduling control signal; and

The encoded scheduling control signal is transferred to the sending unit (206) of the first remote centralized controller (1121), the second remote centralized controller (1122), and the third remote centralized controller (1123).

4. The combined dispatching system of pumped condensing cogeneration and pure condensing steam thermal power according to claim 1, characterized in that, the coal-fired cogeneration unit control execution device (118) includes dispatching control signal transceiving code The memory (302), the drive circuit (303) and the mechanical gear control device (304), the dispatch control signal is decoded by the dispatch control signal transceiving code memory to generate a coal-fired cogeneration unit dispatch control command, and the power output through the drive circuit The driving signal triggers the mechanical gear control device, and the mechanical gear control device controls the coal-fired feed valve action, the heating steam extraction gate action and the power generation steam flow gate action of the coal-fired cogeneration unit.

5. The combined dispatching system of combined heat and power combined with extraction and pure condensing thermal power according to claim 1, characterized in that, the control execution device (119) of the coal-fired pure condensing thermal power unit includes a dispatch control signal Transceiving coded memory (402), drive circuit (403) and mechanical gear control device (404). The scheduling control signal is decoded by the scheduling control signal transceiving coded memory to generate a coal-fired pure condensing thermal power unit scheduling control instruction, which is driven The electric drive signal output by the circuit triggers the mechanical gear control device, and the mechanical gear control device then controls the action of the coal-fired feed ceramic gate of the coal-fired pure condensing thermal power unit and the action of the power generation steam flow valve.

6. The combined dispatching system of pumping condensing combined heat and power and pure condensing thermal power according to claim 1, characterized in that the integrated dispatching control device (115) communicates with the cloud computing service system ( 917) connect and drive the cloud computing computing service system (917) to calculate to obtain the dispatch control signal; the integrated dispatch control device (115) receives the dispatch control signal calculated by the cloud computing computing service system (917) through the power optical fiber (120) , And then issue the dispatch control signal to the first remote centralized controller, the second remote centralized controller, and the third remote centralized controller via power cable or wireless transmission.

7. The combined dispatching system of pumped condensing combined heat and power and pure condensing thermal power according to claim 1, wherein the second remote centralized controller includes an uncooled electric meter pulse counter and a refrigerated cold water flow pulse counter , Pulse signal encoder converter, metering signal amplifying transmitter, and interconnected control signal receiving decoder and control signal remote control transmitter;

The pulse counter of the uncooled electricity meter is connected to the user's uncooled electricity meter, and is used to detect the user's uncooled power consumption data. The user's uncooled power consumption data is processed by the pulse signal encoder converter and the metering signal amplifying transmitter and then sent to the integrated dispatching control device (115) ；

The refrigeration cold water flow pulse counter is connected to the refrigeration fan-coil cold water consumption meter (111) to detect the cold water flow data of the refrigeration fan-coil cold water consumption meter (111). The cold water flow data detected by the refrigeration cold water flow pulse counter is pulsed After processing by the signal encoder converter and the metering signal amplifying transmitter, the pipeline distance information between the refrigeration fan coil (110) and the coal-fired extraction steam condensing cogeneration unit (A) is transmitted to the integrated dispatching control device (115) ; Claims

The control signal receiving decoder receives and decodes the dispatch control information sent by the integrated dispatch control device (115), and then sends the control signal to the air conditioner remote switch (117) and the cooling fan coil flow gate through the control signal remote control transmitter. The remote control switch (116) performs the action.

8. The combined dispatching system of pumped condensing combined heat and power and pure condensing thermal power according to claim 1, characterized in that the conversion efficiency of the centralized heat absorption chiller (200) is 1.

9. The dispatching method for a combined dispatching system of combined heat and power with extraction condensing combined heat and power and pure condensing thermal power according to any one of claims 1 to 8, characterized in that it comprises the following steps-

1.1), Measurement supply side:

_{The first remote centralized controller (1121) collects the power generation output P CHP} (0 and heat output H _CHP ) of the coal-fired extraction steam condensing cogeneration unit (Α) during the time period of 0~TXΔΓ; the sampling period is ΔΓ _; T is The number of acquisitions, T is a natural number;

_{The third remote centralized controller (1123) collects the power generation output C} of the coal-fired pure condensing thermal power unit (B) during the time period of 0TXΔΓ. _N W _;

1.2.1), the second remote centralized controller (1122) collects the pipeline distances between N users and the heat source coal-fired extraction steam condensing cogeneration unit (A)

1.2.2), the second remote centralized controller (1122) collects the non-cooling power consumption of N users in the time period from 0 to TX ΔΓ (0, the sampling frequency is ΔΓ;

1.2.3). The second remote centralized controller (1122) collects the cold consumption Hi () of the refrigeration fan coils (110) of N users in the time period from 0 to TXΔΓ, and the sampling frequency is ΔΓ;

1.2.4), the second remote centralized controller (1122) collects N users' air conditioners (108) installed capacity/ ^HP ; 2), calculation

2.1) Comprehensive dispatch control device (115) Calculate the total power consumption of all users in each period: corpse flat (0 = ();

2.2). According to the total electricity consumption in each period calculated in step 2.1)/Ln(0, use statistical analysis methods to predict the power load/L _d (0; coal-fired pumping collected according to step 1) The heat output H _CHP W of the steam-condensing cogeneration unit (A), and the heat output H _mp (0;

2.4). For the L groups obtained in step 2.3), calculate the total cooling load ₃₍₁ (/) and air conditioner capacity of all users in each group respectively Right request

H _load (/) =∑Hi ,/); H _; (t,l) is the refrigeration load of user i in "inches";

_ΡΕΗΡ (1) =∑Ρ (1): Ρ (1) is the capacity of the air conditioner of the Jth group of users;

3), control calculation

3.1), objective function:

The total energy consumption of the objective function / is:

J f=f +fC ^m H ^m P ^p +f CON +fC ^ra O ^m N ^p (l ¹ ) ^Y

/ _eHP is the power consumption of the combined heat and power, in MWH; / _e ^p is the climbing energy consumption of the combined heat and power, in MWH; / _CON is the power consumption of pure condensing thermal power units, in MWH; / _c ^r ^ It is the climbing energy consumption of pure condensing steam thermal power unit, the unit is MWH; where.

a). Power consumption of coal-fired extraction steam condensing combined heat and power units: ∑ (k-h _cw (t) + m- ρ _αΉΡ (+ c) _{-AT (2) ¾ HP} (0 is adjusted thermoelectricity Cogeneration heating heat output, the unit is MW; ¾ _ΗΡ () is the adjusted combined heat and power power generation output, the unit is MW; k, m, c are the coal consumption of the coal-fired extraction steam condensing cogeneration unit (A) coefficient;

b). Climbing energy consumption of coal-fired extraction steam condensing cogeneration unit:

d _CHP is the climbing coal consumption coefficient of coal-fired extraction steam condensing cogeneration unit (A);

c) Power consumption of thermal power unit:

.-p _cm- . ∑ 29.271· _∞Ν (·έ _∞Ν (·Δ (5) +1)

₆ ∞Ν (0 after adjusting pure condensing steam coal thermal power generation, and the unit of _{_{g / kWh;;. ¾ N}} (0 after adjusting pure condensing steam thermal power generation output, in units of MW;

d), the energy consumption of thermal power unit climbing:

/COT = Σ ^CON · (PCON (0 "/'CON C^" ¹ )) (6)

+1) Claims. _N is the climbing coal consumption coefficient of the thermal power unit (B);

3.2), constraint equation

3.2.1 、 Power load balance

ρ _ΕΉΡ Μ is the sum of cooling power consumption of all user air conditioners at time t after adjustment, in MW;

3.2.2), cooling load balance equation

Among them: ¾ _HP + /,/) is the cooling power of the user's air conditioner at time /, unit is MW; _HP 0,/) is the sum of the cooling power of the user's air conditioner at time t, unit Is MW; H _CHP (for step 2.2) predicts the heat output of coal-fired extraction steam condensing cogeneration unit (A) time period;

3.2.3), Constraints of extraction condensing thermal power unit:

Lower limit of power output:

Maximum power output:

Power output restriction:

Heating output constraints:

5 <h _CHP (t) <h^(t) ( ₁₃ ) where & /, C is the operating curve parameter of the thermal power unit; ^ ⁿ _P ) is the electric output of the coal-fired extraction steam condensing cogeneration unit during the t period The lower limit of d/) is the upper limit of the electric output of coal-fired extraction steam condensing cogeneration unit during t period; is the upper limit of heating output of coal-fired extraction steam condensing cogeneration unit during t period;

3.2.4), the constraints of purely condensing thermal power units:

p ^miD < _Ό (t) < ^max (14)

¹ CON--CON \ ^l > ^-1 CON In the claims, the power output of a pure condensing thermal power unit is ± limit, and the unit is MW _{; c} ^m ₀ ^ is the lower limit of power generation output of a pure condensing thermal power unit, and the unit is MW;

3.2.5), User-side air conditioner constraints:

Heat-to-electricity ratio constraint:

¾HP 0 = COP _EH¥ · ρ _ΕΗΐ (t) (15) Maximum output of air conditioner:

0 <ρ _ΕΉΐ (ί,ί) ≤ min( _EHP (/),H _load (/)/CO _EHP ) (16) where P _EHP (/) is the sum of the capacity of the air conditioner of the user in group J, and the unit is MW; H^W is the cooling load of the user in the group of MW; CC^ _EHP is the coefficient of performance of the air conditioner; ^Hp^,/) is the sum of the power consumption of the air conditioner of the user in the group of time t, and the unit is MW:

Directly collect the variables in step 1), P _CON (t) ·'calculate the variable /Ld W in step 2), ^CHP(, ¾ad(, i^ _P (/) into formula 1~17 and perform joint solution, When the total energy consumption of the objective function/ is the minimum value, the optimized execution variables are obtained after the optimization of the power generation output of coal-fired extraction steam condensing cogeneration unit ^^), and the heat output of coal-fired extraction steam condensing cogeneration unit _HP (0. The user's air conditioner power consumption i¾ _HP , /) and cooling power ¾ _HP , /) at different times, and the power generation output of coal-fired pure condensing thermal power units p _c . _N W _;

4) Send control signals to the supply and the user to perform actions:

The integrated dispatch control device (115) sends variable signals to the first remote centralized controller (1121), the third remote centralized controller (1123) and the user’s second The remote centralized controller (1122) specifically performs the following actions:

_{A. The power output ^HP) and heat output ¾ ΗΡ} () signals of coal-fired extraction steam condensing combined heat and power units to control the actions of the combined heat and power at various periods in the future regulation time;

B. The power consumption ^HP ,/) and cooling power of the air conditioner at different times of the user control the cooling capacity of the air conditioner used by users at different distances from the user side, and the amount of turning off the fan coil;

C. The power output of coal-fired pure condensing thermal power unit /^^ (signal, which controls the action of the thermal power unit at various time periods in the future adjustment time.