CN108182206A - A kind of thermodynamic conditions thermodynamic property method for monitoring and analyzing - Google Patents
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- 229910052760 oxygen Inorganic materials 0.000 claims 1
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Abstract
The invention discloses a kind of thermodynamic conditions thermodynamic property method for monitoring and analyzing, based on intelligent grid Dispatching Control System platform, thermodynamic conditions therrmodynamic system basic information and thermodynamic conditions thermal parameter are modeled respectively, the thermodynamic property model of thermodynamic conditions is established with Circulating Function Method, thermodynamic conditions thermoelectricity relation curve is calculated using variable condition calculation method, according to thermoelectricity relation curve and current heating load fitting output bound, and count unit and the heating index of plant stand, monitor the full engineering of unit operating condition, auxiliary dispatching personnel understand peak load regulation ability and power grid totality peak modulation capacity in time, formulate corresponding measures to regulate rush-hour traffic, reasonable arrangement regulating units participate in peak regulation, improve the new energy digestion capability of heat supply period.
Description
Technical field
The invention belongs to electric power system dispatching power grid environmental technology fields, are related to a kind of thermodynamic conditions thermodynamic property monitoring point
Analysis method.
Background technology
The northern area of China central heating ratio increases year by year, and wherein most central heating system uses cogeneration of heat and power skill
Art.In winter during heat supply under the constraint of " electricity determining by heat " policy, peak load regulation network ability wretched insufficiency.Meanwhile with the inspection of unit
It repaiies and is transformed, the heating steam extraction working condition chart and heating parameter that the design of unit original provides cannot reflect the true operation work of unit
Condition.
With the increase of wind-powered electricity generation and photovoltaic power generation capacity, winter heating season, thermodynamic conditions were unable to depth in order to ensure heat supply
Peak regulation, it has to take the policy that wind abandons light of abandoning, the demand of large-scale wind power consumption can not be adapted to.
Invention content
In view of the problems of the existing technology, the invention discloses a kind of thermodynamic conditions thermodynamic property analysis modeling and monitorings
Analysis method carries out thermodynamic property modeling, and complete to thermodynamic conditions operating condition for the existing operating condition of all kinds of thermodynamic conditions
Process monitoring provides foundation to go deep into Analysis of peak shaving, and auxiliary dispatching personnel's reasonable arrangement unit participates in peak regulation, to improve heat supply period
Between new energy electric power ability to arrange jobs, seek dispatching of power netwoks overall efficiency maximize provide data foundation, skill of the present invention
Art scheme is as follows：
A kind of thermodynamic conditions thermodynamic property method for monitoring and analyzing, which is characterized in that include the following steps：
1）In the database to the modeling of thermodynamic conditions therrmodynamic system basic information and the modeling of thermodynamic conditions thermal parameter and typing heat
Force system basic information and thermal parameter data；
2）According to therrmodynamic system basic information and thermodynamic conditions thermal parameter, the heating power of thermodynamic conditions is established with Circulating Function Method
Characteristic model；
3）With reference to the thermodynamic property model of thermodynamic conditions, the thermoelectricity relationship that generation thermodynamic conditions are calculated using variable condition calculation method is bent
Line；
4）Periodically according to the current heating load of unit and unit thermoelectricity relation curve, it is fitted above and below the unit output at each moment
Limit, foundation is provided for thermodynamic conditions peak regulation plan；
5）Unit and the heating index of full factory are calculated, and with report according to thermodynamic conditions basic information and thermal parameter Information Statistics
Form shows heating index；
6）By modes such as heating power artwork, simulation drawing, schematic diagram, curve graphs, monitor the output of unit on-line on figure, supply
Heat, the real time data and historical data information of operation conditions.
Further, step 1）Middle therrmodynamic system basic information by be manually entered or file mode import database, heat
Force parameter is realized the reality of parameter information by the data acquisition module of dispatching of power netwoks control system by communication protocol and plant communication
When acquire.
Further, the step 1）Middle therrmodynamic system basic information include thermodynamic conditions type, steam turbine reheating situation,
Regenerative steam situation, heat supply steam extraction situation, heater number and type；Thermal parameter information includes main steam, reheated steam, row
The pressure of vapour and regenerative steam, temperature and flow parameter further include pressure, temperature and the flow ginseng of each extraction opening of steam turbine
Number further includes the parameter of condenser pressure, oxygen-eliminating device absolute altitude, heater vapour lateral pressure, Heater Terminal Temperature Difference, heater discharge pressure
Information.
Further, the step 3）Middle variable condition calculation method calculate generation thermodynamic conditions thermoelectricity relation curve include with
Lower step：
A1）Using unit maximum throttle flow, low pressure (LP) cylinder maximum throttle flow as the constraint of the maximum electric load of unit, pass through thermic load
Change, calculate maximum electric load of the unit under different operating modes, and then generate the thermoelectricity upper load limit curve of unit；
A2）Using minimum throttle flow, minimum condensing flow, heat supply extraction temperature as the constraint of unit minimum electric load, pass through heat
The change of load calculates minimum electric load of the unit under different operating modes, and then generates the thermoelectricity load lower limit curve of unit；
A3）Thermic load and the mapping relations of maximum electric load and minimum electric load are established, obtains the thermoelectricity relation curve of unit.
Further, the step 5）Middle thermoelectricity indicator-specific statistics include the statistics heating load of unit, power supply volume, generated energy,
Integrated heat efficiency, hotspot stress, heat supply norm-coal consumption, power generation norm-coal consumption, total norm-coal consumption index；Count full factory
Gross heat input, total power supply volume, hotspot stress, integrated heat efficiency index.
Further, the step 5）Middle report is supported to inquire the heating index information of each hour in one day；Support inquiry
Monthly, season Nei Ge thermoelectricity indication information.
Advantageous effect：The present invention can be to the full process monitoring of thermodynamic conditions operating condition, and is provided to go deep into Analysis of peak shaving
Foundation, auxiliary dispatching personnel's reasonable arrangement unit participate in peak regulation, for new energy electric power ability to arrange jobs during improving heat supply, seek electricity
Net scheduling overall efficiency, which maximizes, provides data foundation.
Description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is variable condition calculation thermoelectricity relation curve flow chart in the present invention.
Specific embodiment
In order to further describe the technical characterstic of the present invention and effect, below in conjunction with the drawings and specific embodiments to this hair
It is bright to be described further.
As shown in Figure 1, entire thermodynamic conditions thermodynamic property method for monitoring and analyzing flow is divided into following steps：
Step 1 in the database models the modeling of thermodynamic conditions therrmodynamic system basic information and thermodynamic conditions thermal parameter（This
In modeling refer to information classification as needed and establish corresponding table in the database, to store basic information and heating power ginseng respectively
The data such as number）, and typing therrmodynamic system basic information and thermal parameter data；.
Thermodynamic conditions therrmodynamic system basic information can be manually entered or import database, thermodynamic conditions heat by file mode
Force parameter is realized the reality of parameter information by the data acquisition module of dispatching of power netwoks control system by communication protocol and plant communication
When acquire.
Therrmodynamic system basic information includes thermodynamic conditions type, steam turbine reheating situation, regenerative steam situation, heat supply steam extraction
The information such as situation, heater number and type.Thermal parameter information includes main steam, reheated steam, steam discharge and regenerative steam
The parameters such as pressure, temperature, flow, each extraction opening of steam turbine（Pressure, temperature, flow）Parameter, condenser pressure, oxygen-eliminating device mark
The parameter informations such as height, heater vapour lateral pressure, Heater Terminal Temperature Difference, heater discharge pressure.
According to therrmodynamic system basic information and thermodynamic conditions thermal parameter, heating power is established with Circulating Function Method for step 2
The thermodynamic property model of unit.
With reference to the thermodynamic property model of thermodynamic conditions, generation thermodynamic conditions are calculated using variable condition calculation method for step 3
Thermoelectricity relation curve.
Variable condition calculation method calculates the thermoelectricity relation curve step of generation thermodynamic conditions, as shown in Figure 2：
A1）Using unit maximum throttle flow, low pressure (LP) cylinder maximum throttle flow as the constraint of the maximum electric load of unit, pass through thermic load
Change, calculate maximum electric load of the unit under different operating modes, and then generate the thermoelectricity upper load limit curve of unit；
A2）Using minimum throttle flow, minimum condensing flow, heat supply extraction temperature etc. as the constraint of unit minimum electric load, pass through
The change of thermic load calculates minimum electric load of the unit under different operating modes, and then generates the thermoelectricity load lower limit curve of unit；
A3）Thermic load and the mapping relations of maximum electric load and minimum electric load are established, obtains the thermoelectricity relation curve of unit.
Step 4 periodically according to the current heating load of unit and unit thermoelectricity relation curve, is fitted the machine at each moment
Group output bound, foundation is provided for thermodynamic conditions peak regulation plan.
Step 5, the heat supply that unit and full factory are calculated according to thermodynamic conditions basic information and thermal parameter Information Statistics refer to
Mark, and heating index is shown with report form.
Heating index statistics includes counting the heating load of unit, power supply volume, generated energy, integrated heat efficiency, hotspot stress, heat supply
The units heating index such as norm-coal consumption, power generation norm-coal consumption, total norm-coal consumption；Count the gross heat input of full factory, total confession
The plant stands heating index such as electricity, hotspot stress, integrated heat efficiency.
Report is supported to inquire the heating index information of each hour in one day；It supports to inquire monthly, season Nei Ge heat supply
Indication information.
Step 6 by modes such as heating power artwork, simulation drawing, schematic diagram, curve graphs, monitors unit on-line on figure
Real time datas and the historical data information such as output, heat supply, operation conditions.
Above-described embodiment does not limit the present invention in any form, and all forms for taking equivalent substitution or equivalent transformation are obtained
Technical solution, be within the scope of the present invention.
Claims (6)
1. a kind of thermodynamic conditions thermodynamic property method for monitoring and analyzing, which is characterized in that include the following steps,
Step 1 is modeled and is recorded to the modeling of thermodynamic conditions therrmodynamic system basic information and thermodynamic conditions thermal parameter in the database
Enter therrmodynamic system basic information and thermal parameter data；
According to therrmodynamic system basic information and thermodynamic conditions thermal parameter, thermodynamic conditions are established with Circulating Function Method for step 2
Thermodynamic property model；
With reference to the thermodynamic property model of thermodynamic conditions, the thermoelectricity of generation thermodynamic conditions is calculated using variable condition calculation method for step 3
Relation curve；
Step 4, periodically according to the current heating load of unit and unit thermoelectricity relation curve, the unit for being fitted each moment goes out
Power bound provides foundation for thermodynamic conditions peak regulation plan；
Step 5 calculates unit and the heating index of full factory according to thermodynamic conditions basic information and thermal parameter Information Statistics, and
Heating index is shown with report form；
Step 6 by modes such as heating power artwork, simulation drawing, schematic diagram, curve graphs, monitors going out for unit on-line on figure
Power, heat supply, operation conditions real time data and historical data information.
2. a kind of thermodynamic conditions thermodynamic property method for monitoring and analyzing according to claim 1, it is characterised in that in step 1
Therrmodynamic system basic information by be manually entered or file mode import database, thermal parameter is by dispatching of power netwoks control system
Data acquisition module realizes the real-time acquisition of parameter information by communication protocol and plant communication.
A kind of 3. thermodynamic conditions thermodynamic property method for monitoring and analyzing according to claim 1, it is characterised in that the step
Therrmodynamic system basic information includes thermodynamic conditions type, steam turbine reheating situation, regenerative steam situation, heat supply steam extraction feelings in one
Condition, heater number and type；Thermal parameter information includes pressure, the temperature of main steam, reheated steam, steam discharge and regenerative steam
And flow parameter, the pressure, temperature and flow parameter of each extraction opening of steam turbine are further included, condenser pressure is further included, removes
Oxygen device absolute altitude, heater vapour lateral pressure, Heater Terminal Temperature Difference, heater discharge pressure parameter information.
A kind of 4. thermodynamic conditions thermodynamic property method for monitoring and analyzing according to claim 1, it is characterised in that the step
The thermoelectricity relation curve of variable condition calculation method calculating generation thermodynamic conditions includes the following steps in three：
A1）Using unit maximum throttle flow, low pressure (LP) cylinder maximum throttle flow as the constraint of the maximum electric load of unit, pass through thermic load
Change, calculate maximum electric load of the unit under different operating modes, and then generate the thermoelectricity upper load limit curve of unit；
A2）Using minimum throttle flow, minimum condensing flow, heat supply extraction temperature as the constraint of unit minimum electric load, pass through heat
The change of load calculates minimum electric load of the unit under different operating modes, and then generates the thermoelectricity load lower limit curve of unit；
A3）Thermic load and the mapping relations of maximum electric load and minimum electric load are established, obtains the thermoelectricity relation curve of unit.
A kind of 5. thermodynamic conditions thermodynamic property method for monitoring and analyzing according to claim 1, it is characterised in that the step
Heating index statistics includes the heating load, power supply volume, generated energy, integrated heat efficiency, hotspot stress, the heat supply standard that count unit in five
The index of coal consumption amount, generate electricity norm-coal consumption, total norm-coal consumption；Count the gross heat input of full factory, total power supply volume, hotspot stress,
The index of integrated heat efficiency.
A kind of 6. thermodynamic conditions thermodynamic property method for monitoring and analyzing according to claim 1, it is characterised in that the step
Report is supported to inquire the heating index information of each hour in one day in five；It supports to inquire monthly, season Nei Ge thermoelectricity index
Information.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108695898A (en) * | 2018-06-29 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | A kind of on-line monitoring method of thermoelectricity unit peak modulation capacity |
| CN109063890A (en) * | 2018-06-21 | 2018-12-21 | 国网山东省电力公司电力科学研究院 | One kind being based on the maximized Load Distribution method of the full factory's peak modulation capacity of steam power plant |
| CN109471388A (en) * | 2018-11-07 | 2019-03-15 | 国网辽宁省电力有限公司经济技术研究院 | Cogeneration units status remote based on TD-LTE mechanics of communication monitors system |
| CN111898064A (en) * | 2020-06-16 | 2020-11-06 | 华电电力科学研究院有限公司 | Calculation method suitable for heat supply ratio of gas-steam combined cycle unit |
| CN112308435A (en) * | 2020-11-04 | 2021-02-02 | 山东电力研究院 | Thermoelectric unit heat supply performance evaluation method and system |
| CN113807196A (en) * | 2021-08-24 | 2021-12-17 | 华能国际电力股份有限公司德州电厂 | Method for obtaining thermoelectric coupling characteristics of cogeneration unit |
| CN116402411A (en) * | 2023-06-09 | 2023-07-07 | 济南作为科技有限公司 | Consumption difference analysis method, device, equipment and storage medium |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109063890A (en) * | 2018-06-21 | 2018-12-21 | 国网山东省电力公司电力科学研究院 | One kind being based on the maximized Load Distribution method of the full factory's peak modulation capacity of steam power plant |
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| CN108695898A (en) * | 2018-06-29 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | A kind of on-line monitoring method of thermoelectricity unit peak modulation capacity |
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| CN109471388A (en) * | 2018-11-07 | 2019-03-15 | 国网辽宁省电力有限公司经济技术研究院 | Cogeneration units status remote based on TD-LTE mechanics of communication monitors system |
| CN111898064A (en) * | 2020-06-16 | 2020-11-06 | 华电电力科学研究院有限公司 | Calculation method suitable for heat supply ratio of gas-steam combined cycle unit |
| CN111898064B (en) * | 2020-06-16 | 2023-07-25 | 华电电力科学研究院有限公司 | Calculation method suitable for heat supply ratio of gas-steam combined cycle unit |
| CN112308435A (en) * | 2020-11-04 | 2021-02-02 | 山东电力研究院 | Thermoelectric unit heat supply performance evaluation method and system |
| CN113807196A (en) * | 2021-08-24 | 2021-12-17 | 华能国际电力股份有限公司德州电厂 | Method for obtaining thermoelectric coupling characteristics of cogeneration unit |
| CN116402411A (en) * | 2023-06-09 | 2023-07-07 | 济南作为科技有限公司 | Consumption difference analysis method, device, equipment and storage medium |
| CN116402411B (en) * | 2023-06-09 | 2024-05-14 | 济南作为科技有限公司 | Consumption difference analysis method, device, equipment and storage medium |
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