CN107506911A - A kind of station service power consumption rate evaluation method of thermal power plant examination operating mode - Google Patents
A kind of station service power consumption rate evaluation method of thermal power plant examination operating mode Download PDFInfo
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Abstract
The invention discloses a kind of station service power consumption rate evaluation method of thermal power plant examination operating mode, comprise the following steps：Step 1：It is determined that examination point；Step 2：The electric energy loss of each subsidiary engine in examination point is calculated, and carries out summation operation and obtains subsidiary engine electric energy loss sum；Step 3：The electric energy loss of each electrical equipment in examination point is calculated, and carries out summation operation and obtains electrical equipment electric energy loss sum；Step 4：Subsidiary engine electric energy loss sum that step 2 is calculated is added with the electrical equipment electric energy loss sum that step 3 is calculated obtain power plant from electricity loss；Step 5：The Performance Assessment rated power from electricity loss divided by generator in the power plant that step 4 is calculated obtains station service power consumption rate, this method is according to examining a little, the electric energy loss of each subsidiary engine and each electrical equipment in examination point is calculated, more conforms to the requirement of the external EPC Project of foreign countries.
Description
Technical field
The present invention relates to thermal power plant station service power consumption rate evaluation method technical field, and in particular to examines in a kind of thermal power plant
The station service power consumption rate evaluation method of core operating mode.
Background technology
Thermal power plant station service power consumption rate is the personal electric energy loss and generator when generating set generates electricity in the same period
The ratio of the generated energy of group, it is the index from electricity loss for weighing and being evaluated as to meet whole generate electricity and the subsidiary engine of configuration.Machine
The purpose of group Performance Assessment is to examine every technical-economic index with examination unit whether to reach contract, design and pertinent regulations
Requirement, examination item is such as contributed, efficiency, power consumption, heat consumption, examination operating mode be unit performance examination when specific operation.
Specification DL/T 5153-2014《Thermal power plant station service designing technique code》Define thermal power plant unit
Station service power consumption rate under Performance Assessment operating mode, calculation formula (conversion coefficient method) are as follows：
Sc=Σ (KPa)
In formula：E represents station service power consumption rate (%), ScRepresent generating set in 100% nominal output (summer) station service
Rate calculated load (kVA), K conversion coefficients, PaRepresent electronic by the station-service of the nominal output operating mode of generating set summer 100% determination
Acc power (kW)；Represent the average power factor of motor at runtime, PgRepresent the rated power of generator.
The carry calculation designed in code in station service power consumption rate is examined under operating mode using conversion coefficient method, unit performance
Station service power consumption rate calculates and has still continued to use conversion coefficient method on the basis of station service power consumption rate is designed, to motor rated power then employing property
Motor rated power corresponding to operating mode can be examined.
Conversion coefficient method is the computational methods by being summed up to domestic a large amount of power plant's investigations, is adapted to domestic power industry feelings
Condition, and because conversion coefficient method does not consider the computer capacity of station service power consumption rate, thus it is not widely approved in the world and should
With.Other conversion coefficient method carries out station service power consumption rate estimation and following drawback also be present：
(1) each load power factor is different, using average power factorResult of calculation can be caused a deviation；
(2) conversion coefficient K is the experience that rate while considering full factory's motor, power factor and efficiency are chosen
Coefficient, result of calculation can be caused a deviation.
In consideration of it, special propose this invention.
The content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of thermal power plant examination operating mode
Station service power consumption rate evaluation method, it is more applicable for external EPC Project.
The technical proposal of the invention is realized in this way：Comprise the following steps：Step 1：It is determined that examination point；Step 2：Calculate
The electric energy loss of each subsidiary engine in examination point, and carry out summation operation and obtain subsidiary engine electric energy loss sum；Step 3：Calculate examination
The electric energy loss of each electrical equipment in point, and carry out summation operation and obtain electrical equipment electric energy loss sum；Step 4：Will step
The rapid 2 subsidiary engine electric energy loss sums being calculated are added with the electrical equipment electric energy loss sum that step 3 is calculated and sent out
Power plant from electricity loss；Step 5：The performance from electricity loss divided by generator in the power plant that step 4 is calculated is examined
Core rated power obtains station service power consumption rate multiplied by with 100%, and combining step 1~5 can estimate station service power consumption rate by equation below：
In formula：E represents station service power consumption rate (%), P1Represent the electric energy loss (kW) of subsidiary engine, P2Represent the electric energy damage of electrical equipment
Consume (kW), PfeThe Performance Assessment rated power (kW) of generator is represented, this method is calculated in examination point according to examining a little
The electric energy loss of each subsidiary engine and each electrical equipment, more conform to the requirement of the external EPC Project of foreign countries；.
Further, the electric energy loss of subsidiary engine calculates according to equation below described in the step 2：
P1=(Pz/η)·kf1·n1
In formula：P1Represent the electric energy loss (kW) of subsidiary engine, PzThe power (kW) of subsidiary engine is represented, η represents the electric of driving subsidiary engine
The efficiency of equipment, kf1The operating factor of subsidiary engine is represented, n represents the operation number of units of subsidiary engine, is not connected with the electric machinery subsidiary engine of shaft coupling
Power be subsidiary engine shaft power, be connected with shaft coupling electric machinery subsidiary engine power for subsidiary engine shaft power divided by shaft coupling
Machinery driving efficiency, the power of non-electric machinery subsidiary engine are the active power of subsidiary engine, and this method is auxiliary with driving using the power of subsidiary engine
The power consumption of the ratio calculation subsidiary engine of the efficiency of the electrical equipment of machine, it can avoid producing because each load power factor is different
Calculating deviation.
Further, the operating factor of subsidiary engine is examination operating mode downwind scheme actual run time and the ratio for examining the time, is changed
It is the empirical coefficient that rate while considering full factory's motor, power factor and efficiency are chosen to calculate COEFFICIENT K, can be to calculating
As a result cause a deviation, this method calculates the power consumption of each subsidiary engine using the operating factor of subsidiary engine, due to the operating factor of subsidiary engine
It is that gained is calculated by actual run time, therefore more meets practical operation situation, avoids the mistake of conversion coefficient K and actual conditions
Difference, improve the accuracy of calculating.
Further, the electric energy loss of electrical equipment calculates according to equation below described in the step 3：
P2=Pd·kf2·n2
In formula：P2Represent the electric energy loss (kW) of electrical equipment, PdRepresent the loss power (kW) of electrical equipment, kf2Represent
The operating factor of electrical equipment, n represent the operation number of units of electrical equipment.
Further, the operating factor of electrical equipment is electrical equipment actual run time under examination operating mode and examination time
Ratio, conversion coefficient K are the empirical coefficients that rate while considering full factory's motor, power factor and efficiency are chosen,
Result of calculation can be caused a deviation, this method calculates the power consumption of each electrical equipment using the operating factor of electrical equipment, by
It is that gained is calculated by actual run time in the operating factor of electrical equipment, therefore more meets practical operation situation, avoids and change
The error of COEFFICIENT K and actual conditions is calculated, improves the accuracy of calculating.
The beneficial effects of the invention are as follows：
(1) this method calculates the electric energy loss of each subsidiary engine and each electrical equipment in examination point, more according to examining a little
Add the requirement for the external EPC Project for meeting foreign countries.
(2) this method uses the electric energy of the power and the ratio calculation subsidiary engine of the efficiency of the electrical equipment of driving subsidiary engine of subsidiary engine
Consumption, can avoid because each load power factor is different and caused by calculate deviation.
(3) this method calculates the power consumption of each subsidiary engine using the operating factor of subsidiary engine, because the operating factor of subsidiary engine is
Gained is calculated by actual run time, therefore more meets practical operation situation, avoids the mistake of conversion coefficient K and actual conditions
Difference, improve the accuracy of calculating.
(4) this method calculates the power consumption of each electrical equipment using the operating factor of electrical equipment, due to electrical equipment
Operating factor be that gained is calculated by actual run time, therefore more meet practical operation situation, avoid conversion coefficient K and reality
The error of border situation, improve the accuracy of calculating.
Embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to embodiments of the invention,
Technical scheme is clearly and completely described, based on the embodiment in the application, those of ordinary skill in the art
The other similar embodiments obtained on the premise of creative work is not made, it should all belong to the model of the application protection
Enclose.
Embodiment one：
A kind of station service power consumption rate evaluation method of thermal power plant examination operating mode, the present embodiment examination point is main transformer high-voltage
Side, coal unit Performance Assessment rated power are 2*600MW, are specifically comprised the following steps：
Gather the parameter information (being shown in Table 1) of each subsidiary engine equipment of heat engine specialty in power plant examination point, it is first determined each subsidiary engine
Load character and power, load character includes motor type load and non-motor type load, is not connected with the electric machinery of shaft coupling
The power of subsidiary engine is the shaft power of subsidiary engine, determines the value and inserts the correspondence position of table 1, is connected with the electric machinery subsidiary engine of shaft coupling
Power is the shaft power of subsidiary engine divided by the machinery driving efficiency of shaft coupling, determines the value and inserts the correspondence position of table 1, non-electric machinery
The power of subsidiary engine is the active power of subsidiary engine,
Determine the value and insert the correspondence position of table 1, it is then determined that driving the efficiency of the electrical equipment of each subsidiary engine, each subsidiary engine
Rated power and each subsidiary engine operating factor, and above-mentioned parameter is inserted into the correspondence position of table 1, wherein subsidiary engine operating factor is examination work
Condition downwind scheme actual run time and the ratio of examination time, then calculate the electric energy loss of each subsidiary engine and are included in table according to the following formula
Position corresponding to 1.
P1=(Pz/η)·kf1·n1
In formula：P1Represent the electric energy loss (kW) of subsidiary engine, PzThe power (kW) of subsidiary engine is represented, η represents the electric of driving subsidiary engine
The efficiency of equipment, kf1The operating factor of subsidiary engine is represented, n represents the operation number of units of subsidiary engine, by each subsidiary engine electric energy loss of heat engine specialty
Be added heat engine specialty subsidiary engine electric energy loss sum is 41405kW.
The heat engine specialty electric load of table 1 inputs and electric energy loss calculates
The parameter information (being shown in Table 2) of each subsidiary engine equipment of speciality of hydroelectric power engineering construction in power plant examination point is gathered, and according to identical side
Method speciality of hydroelectric power engineering construction subsidiary engine electric energy loss sum is 20060kW.
The speciality of hydroelectric power engineering construction electric load of table 2 inputs and electric energy loss calculates
The parameter information (being shown in Table 3) of each subsidiary engine equipment of specialty chemical in power plant examination point is gathered, and according to identical side
Forensic chemistry specialty subsidiary engine electric energy loss sum is 1472.5kW.
The specialty chemical electric load of table 3 inputs and electric energy loss calculates
The parameter information (being shown in Table 4) of each subsidiary engine equipment of defeated coal specialty in power plant examination point is gathered, and according to identical side
The defeated coal specialty subsidiary engine electric energy loss sum of method is 2581.3kW.
The defeated coal specialty electric load input of table 4 and electric energy loss calculate
The parameter information (being shown in Table 5) of each subsidiary engine equipment of ash disposal specialty in power plant examination point is gathered, and according to identical side
Method ash disposal specialty subsidiary engine electric energy loss sum is 2730.2kW.
The ash disposal specialty electric load of table 5 inputs and electric energy loss calculates
The parameter information (being shown in Table 6) of each subsidiary engine equipment of heating and ventilating discipline in power plant examination point is gathered, and according to identical side
Method heating and ventilating discipline subsidiary engine electric energy loss sum is 2011kW.
The heating and ventilating discipline electric load of table 6 inputs and electric energy loss calculates
Each professional subsidiary engine electric energy loss sum, which is added, must examine the power consumption sums of all subsidiary engines in be a little
70260kW.Then the parameter information (being shown in Table 7) of each electrical equipment in power plant examination point is gathered, includes the loss of electrical equipment
Power, operating factor and operation number of units, when wherein the operating factor of electrical equipment is examines electrical equipment actual motion under operating mode
Between with examine the time ratio, then calculate the electric energy loss of each electrical equipment according to the following formula, and insert corresponding position in table.
P2=Pd·kf2·n2
In formula：P2Represent the electric energy loss (kW) of electrical equipment, PdRepresent the loss power (kW) of electrical equipment, kf2Represent
The operating factor of electrical equipment, n represent the operation number of units of electrical equipment.The electric energy loss of each electrical equipment, which is added, must examine a little
The electric energy loss sum of interior all electrical equipments is 5610kW.
The electrical equipment electric load of table 7 inputs and electric energy loss calculates
The power consumption sum of all subsidiary engines and the electric energy loss sum of all electrical equipments in examination point in point will be examined
What addition obtained power plant is 75870kW from electricity loss, and power plant is examined from electricity loss divided by power plant unit performance
Core rated power 2*600MW obtains station service power consumption rate as 6.322% multiplied by using 100%.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of station service power consumption rate evaluation method of thermal power plant examination operating mode, it is characterised in that comprise the following steps：
Step 1：It is determined that examination point；
Step 2：The electric energy loss of each subsidiary engine in examination point is calculated, and carries out summation operation and obtains subsidiary engine electric energy loss sum；
Step 3：The electric energy loss of each electrical equipment in examination point is calculated, and carries out summation operation and obtains electrical equipment electric energy damage
Consume sum；
Step 4：The electrical equipment electric energy loss that the subsidiary engine electric energy loss sum that step 2 is calculated is calculated with step 3
Sum be added to obtain power plant from electricity loss；
Step 5：The Performance Assessment rated power from electricity loss divided by generator in the power plant that step 4 is calculated obtains
Station service power consumption rate.
A kind of 2. station service power consumption rate evaluation method of thermal power plant examination operating mode according to claim 1, it is characterised in that
The electric energy loss of subsidiary engine calculates according to equation below described in the step 2：
P1=(Pz/η)·kf1·n1
In formula：P1Represent the electric energy loss (kW) of subsidiary engine, PzThe power (kW) of subsidiary engine is represented, η represents the electrical equipment of driving subsidiary engine
Efficiency, kf1The operating factor of subsidiary engine is represented, n represents the operation number of units of subsidiary engine.
A kind of 3. station service power consumption rate evaluation method of thermal power plant examination operating mode according to claim 2, it is characterised in that
The power of the electric machinery subsidiary engine of not connected shaft coupling is the shaft power of subsidiary engine, and the power for being connected with the electric machinery subsidiary engine of shaft coupling is
The shaft power of subsidiary engine divided by the machinery driving efficiency of shaft coupling, the power of non-electric machinery subsidiary engine are the active power of subsidiary engine.
A kind of 4. station service power consumption rate evaluation method of thermal power plant examination operating mode according to claim 2, it is characterised in that
The operating factor of subsidiary engine is examination operating mode downwind scheme actual run time and the ratio for examining the time.
A kind of 5. station service power consumption rate evaluation method of thermal power plant examination operating mode according to claim 1, it is characterised in that
The electric energy loss of electrical equipment calculates according to equation below described in the step 3：
P2=Pd·kf2·n2
In formula：P2Represent the electric energy loss (kW) of electrical equipment, PdRepresent the loss power (kW) of electrical equipment, kf2Represent electric
The operating factor of equipment, n represent the operation number of units of electrical equipment.
A kind of 6. station service power consumption rate evaluation method of thermal power plant examination operating mode according to claim 5, it is characterised in that
The operating factor of electrical equipment is electrical equipment actual run time and the ratio of examination time under examination operating mode.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087033A (en) * | 2018-09-28 | 2018-12-25 | 龙源（北京）风电工程技术有限公司 | A kind of comprehensive field power consumption rate calculating analysis system of wind power plant |
| CN109461093A (en) * | 2018-10-08 | 2019-03-12 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Electric quantity measuring system Accuracy Evaluation and station service energy consumption analysis system |
| CN111552914A (en) * | 2020-05-25 | 2020-08-18 | 中国恩菲工程技术有限公司 | Electric load calculation method and device based on motor shaft power |
| CN111563676A (en) * | 2020-04-29 | 2020-08-21 | 大唐环境产业集团股份有限公司 | Method for evaluating indexes of energy consumption of desulfurization system based on multiple influence factors |
| CN113253018A (en) * | 2021-04-20 | 2021-08-13 | 苏州西热节能环保技术有限公司 | Electric energy balance monitoring method for coal-fired power plant |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087033A (en) * | 2018-09-28 | 2018-12-25 | 龙源（北京）风电工程技术有限公司 | A kind of comprehensive field power consumption rate calculating analysis system of wind power plant |
| CN109461093A (en) * | 2018-10-08 | 2019-03-12 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Electric quantity measuring system Accuracy Evaluation and station service energy consumption analysis system |
| CN111563676A (en) * | 2020-04-29 | 2020-08-21 | 大唐环境产业集团股份有限公司 | Method for evaluating indexes of energy consumption of desulfurization system based on multiple influence factors |
| CN111563676B (en) * | 2020-04-29 | 2023-12-05 | 大唐环境产业集团股份有限公司 | Method for evaluating index of energy consumption of desulfurization system based on multiple influencing factors |
| CN111552914A (en) * | 2020-05-25 | 2020-08-18 | 中国恩菲工程技术有限公司 | Electric load calculation method and device based on motor shaft power |
| CN111552914B (en) * | 2020-05-25 | 2023-06-02 | 中国恩菲工程技术有限公司 | Electric load calculation method and device based on motor shaft power |
| CN113253018A (en) * | 2021-04-20 | 2021-08-13 | 苏州西热节能环保技术有限公司 | Electric energy balance monitoring method for coal-fired power plant |
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Application publication date: 20171222 |