CN106355513A - Analysis method for unit adjustable contribution area based on auxiliary machine state assessment of unit - Google Patents
Analysis method for unit adjustable contribution area based on auxiliary machine state assessment of unit Download PDFInfo
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Abstract
The invention discloses an analysis method for a unit adjustable contribution area based on auxiliary machine state assessment of a unit, comprising the following steps: 1) for multiple auxiliary machines in the unit, obtaining real-time running and monitoring data of the auxiliary machine of each unit, 2) confirming the operation state of the auxiliary machine of each unit; 3) outputting the unit adjustable contribution area under the operation state of the current auxiliary machine of the unit according to the control policy of unit DCS system. The analysis method for a unit adjustable contribution area based on auxiliary machine state assessment of a unit can analyze the influence of the operation state of the auxiliary machine on the unit contribution and power balance of the whole province so as to realize updating the adjustable contribution of the whole network timely;and the method is beneficial for the power dispatching operator to know about the change condition of the generation power of the unit and ensure the stable operation of the power grid.
Description
Technical field
The present invention relates to a kind of unit output analysis method, more particularly to a kind of machine based on set auxiliary machinery state estimation
Organize adjustable Novel Interval Methods of exerting oneself, belong to electric power unit control technology field.
Background technology
Carry forward vigorously extra-high voltage project construction with China, the extra-high voltage alternating current-direct current of " three friendships four are straight " will be built up in a lot of regions
Serial-parallel power grid runs new frame, and it is always reached 30,000,000 kilowatts about so that a lot of region actually enters and " receives greatly by electric energy power
End " electrical network, operation of power networks characteristic will occur to sexually revise at all.
For the operation of " big receiving end " electrical network, how soon the problem compeling highly necessary solution is exactly when extra-high voltage breaks down,
Speed, be precisely controlled, realize quick regulation and the automatic synchronization of the resources such as load, generating.And two for extra-high voltage emergency disposal
The customer charge of one of general orientation controls, and due to being related to the social people's livelihood, impact is often larger, therefore occurs in extra-high voltage fault
When, first have to consideration is exactly the quick response of the local generation assets of other direction receiving end electrical network of emergency disposal, to keep away
Exempt from the generation of power cuts to limit consumption.
Quick regulation for the local generation assets of receiving end electrical network is it is necessary first to assessment is each department, the combustion of the Ge Tai main force
The scalable load setting of coal unit, i.e. adjustable the exerting oneself of the mutual disorder of internal organs of net source coordination.In extra-high voltage troubleshooting it is necessary first to
Assessment is each unit schedulable load setting, and then determines to select which unit recovers balancing the load within the shortest time.
According to statistics, coal unit adjustable the exerting oneself that major pant item abnormal state leads to accounts for all factor proportions height limited by interval
Reach 1/3, therefore, need badly and scientific and effective assessment is carried out to generating set major pant item state, and then quantify exert oneself adjustable to unit
Influence degree.
Currently for major pant item running status, electric dispatching department relies on electricity power enterprise voluntarily to report it is impossible to real substantially
When accurately understand its operation conditions.
Content of the invention
Present invention is primarily targeted at, overcome deficiency of the prior art, provide one kind to comment based on set auxiliary machinery state
The adjustable Novel Interval Methods of exerting oneself of unit estimated, can analyze the impact to unit output for the subsidiary engine operation conditions and in real time to the whole province
The impact of hair electric equilibrium, thus realize the whole network adjustable exert oneself upgrade in time, be conducive to power scheduling operations staff timely
Solution unit generation capacity variation situation is it is ensured that the stable operation of electrical network.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of unit based on set auxiliary machinery state estimation is adjustable Novel Interval Methods of exerting oneself, comprise the following steps:
1) if to the Ganlei's set auxiliary machinery in unit, obtaining the real time execution Monitoring Data of every class set auxiliary machinery；
2) determine the running status of set auxiliary machinery；
3) combine unit dcs system control strategy, export the adjustable area of exerting oneself of unit under current set auxiliary machinery running status
Between.
The present invention is further arranged to: described set auxiliary machinery include the pressure fan of coal unit, air-introduced machine, primary air fan,
Coal pulverizer and feed pump.
The present invention is further arranged to: described step 2) determine the running status of set auxiliary machinery, specifically,
2-1) select the crucial measuring point of set auxiliary machinery, obtain the Real-time Monitoring Data of crucial measuring point；
2-2) Real-time Monitoring Data of crucial measuring point is compared with controlling restriction, judge the real-time monitoring of crucial measuring point
Whether data surmounts control limit；If surmounting control limit it is determined that the departure degree of set auxiliary machinery；
2-3) judge the running status of set auxiliary machinery.
The present invention is further arranged to: described key measuring point selection standard be, this measuring point belong to set auxiliary machinery body and
The on-line monitoring measuring point of association motor and this measuring point is out-of-limit in dcs system control strategy that this set auxiliary machinery can be led to be in
Equipment stoppage in transit state.
The present invention is further arranged to: described control limit comes really according to limit value tactful in unit dcs system control strategy
Fixed, including alarm limits and tripping operation limit value.
The present invention is further arranged to: the departure degree of described set auxiliary machinery is determined according to calculation equation, its meter
Calculating equation isWherein, δ is departure degree, sActualFor the actual operating data of crucial measuring point, sLimit valueFor closing
The control limit of key measuring point, s0For crucial measuring point normal operation when meansigma methodss.
The present invention is further arranged to: the criterion of the running status of described set auxiliary machinery is,
If the crucial measuring point of monitoring belonging to set auxiliary machinery does not exist, and any warning is transfinited, trip out-of-limit situation, judging should
Set auxiliary machinery stable and reliable operation, that is, be in steady operational status；
If belonging to set auxiliary machinery, the crucial measuring point of monitoring only exists warning transfiniting, there is not tripping operation overrun condition, then judging
This set auxiliary machinery can maintain operation in the case of strengthening monitoring reluctantly, that is, be in maintenance running status；
If the crucial measuring point of monitoring belonging to set auxiliary machinery has tripping operation overrun condition, judge that this set auxiliary machinery has occurred bright
Aobvious fault, and cannot recover in time in the short time, that is, it is in stoppage in transit state.
The present invention is further arranged to: described unit dcs system control strategy adopts the rb of unit dcs system to control plan
Slightly.
Compared with prior art, the invention has the advantages that:
By to unit major pant item running state real-time monitoring and health degree assessment, analysis subsidiary engine operation conditions pair in real time
The impact of unit output and the impact to the whole province's hair electric equilibrium, realize the whole network adjustable exert oneself upgrade in time, be conducive to electricity
Power management and running personnel understand the whole province's unit generation capacity variation situation as early as possible it is ensured that the stable operation of electrical network.
The above is only the general introduction of technical solution of the present invention, in order to be better understood upon the technological means of the present invention, under
Face combines accompanying drawing, and the invention will be further described.
Brief description
Fig. 1 is the flow chart of the embodiment of the present invention.
Specific embodiment
With reference to Figure of description, the present invention is further illustrated.
The present invention provides a kind of adjustable Novel Interval Methods of exerting oneself of unit based on set auxiliary machinery state estimation, as Fig. 1 institute
Show, comprise the following steps:
1) if to the Ganlei's set auxiliary machinery in unit, obtaining the real time execution Monitoring Data of every class set auxiliary machinery；
Wherein, set auxiliary machinery includes pressure fan, air-introduced machine, primary air fan, coal pulverizer and feed pump of coal unit etc. 5 class
Subsidiary engine equipment.
2) determine the running status of set auxiliary machinery, specifically,
2-1) select the crucial measuring point of set auxiliary machinery, obtain the Real-time Monitoring Data of crucial measuring point；
Wherein, the selection standard of crucial measuring point is, this measuring point belongs to set auxiliary machinery body and the online prison of association motor
Survey measuring point and this measuring point is out-of-limit in dcs system control strategy that this set auxiliary machinery can be led to be in equipment stoppage in transit state.
2-2) Real-time Monitoring Data of crucial measuring point is compared with controlling restriction, judge the real-time monitoring of crucial measuring point
Whether data surmounts control limit；If surmounting control limit it is determined that the departure degree of set auxiliary machinery；
Wherein, control limit to determine according to limit value tactful in unit dcs system control strategy, including alarm limits and jump
Lock limit value；The departure degree of set auxiliary machinery is determined according to calculation equation, and its calculation equation is
Wherein, δ is departure degree, sActualFor the actual operating data of crucial measuring point, sLimit valueFor the control limit of crucial measuring point, s0For key
Meansigma methodss during the normal operation of measuring point.
2-3) judge the running status of set auxiliary machinery, criterion is,
If the crucial measuring point of monitoring belonging to set auxiliary machinery does not exist, and any warning is transfinited, trip out-of-limit situation, judging should
Set auxiliary machinery stable and reliable operation, that is, be in steady operational status；
If belonging to set auxiliary machinery, the crucial measuring point of monitoring only exists warning transfiniting, there is not tripping operation overrun condition, then judging
This set auxiliary machinery can maintain operation in the case of strengthening monitoring reluctantly, that is, be in maintenance running status；
If the crucial measuring point of monitoring belonging to set auxiliary machinery has tripping operation overrun condition, judge that this set auxiliary machinery has occurred bright
Aobvious fault, and cannot recover in time in the short time, that is, it is in stoppage in transit state.
3) combine the rb control strategy of unit dcs system, the unit exporting under current set auxiliary machinery running status may bring up
Power is interval.
, its major pant item operation conditions is carried out with real-time assessment taking certain 660mw grade unit as a example, carry out adjustable area of exerting oneself
Between analyze.
This unit major pant item online monitoring data at a time is as shown in table 1 below:
Table 1
By entering with alarm limits, tripping operation limit value to the actual measurement Monitoring Data of the crucial measuring point of monitoring belonging to each major pant item
Row compares, and calculates the irrelevance of each index, finally judges that each major pant item running status is as shown in table 2 below:
Table 2
The rb strategy of this unit dcs system design is as shown in table 3 below:
Table 3
In conjunction with each subsidiary engine running status and its rb control strategy it can be determined that this unit adjustable exert oneself interval for 330～
660mw.
Ultimate principle, principal character and the advantage of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not restricted to the described embodiments, the simply explanation present invention's described in above-described embodiment and description is former
Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements
Both fall within scope of the claimed invention.Claimed scope is by appending claims and its equivalent circle.
Fixed.
Claims (8)
1. a kind of adjustable Novel Interval Methods of exerting oneself of unit based on set auxiliary machinery state estimation are it is characterised in that include following
Step:
1) if to the Ganlei's set auxiliary machinery in unit, obtaining the real time execution Monitoring Data of every class set auxiliary machinery；
2) determine the running status of set auxiliary machinery；
3) combine unit dcs system control strategy, export the adjustable interval of exerting oneself of unit under current set auxiliary machinery running status.
2. the adjustable Novel Interval Methods of exerting oneself of a kind of unit based on set auxiliary machinery state estimation according to claim 1,
It is characterized in that: described set auxiliary machinery includes pressure fan, air-introduced machine, primary air fan, coal pulverizer and the feed pump of coal unit.
3. the adjustable Novel Interval Methods of exerting oneself of a kind of unit based on set auxiliary machinery state estimation according to claim 1,
It is characterized in that: described step 2) determine the running status of set auxiliary machinery, specifically,
2-1) select the crucial measuring point of set auxiliary machinery, obtain the Real-time Monitoring Data of crucial measuring point；
2-2) Real-time Monitoring Data of crucial measuring point is compared with controlling restriction, judge the Real-time Monitoring Data of crucial measuring point
Whether surmount control limit；If surmounting control limit it is determined that the departure degree of set auxiliary machinery；
2-3) judge the running status of set auxiliary machinery.
4. the adjustable Novel Interval Methods of exerting oneself of a kind of unit based on set auxiliary machinery state estimation according to claim 3,
It is characterized in that: the selection standard of described key measuring point is that this measuring point belongs to set auxiliary machinery body and associates the online of motor
Monitoring measuring point and this measuring point is out-of-limit in dcs system control strategy that this set auxiliary machinery can be led to be in equipment stoppage in transit state.
5. the adjustable Novel Interval Methods of exerting oneself of a kind of unit based on set auxiliary machinery state estimation according to claim 3,
It is characterized in that: described control limit to determine according to limit value tactful in unit dcs system control strategy, include alarm limits with
Tripping operation limit value.
6. the adjustable Novel Interval Methods of exerting oneself of a kind of unit based on set auxiliary machinery state estimation according to claim 3,
It is characterized in that: the departure degree of described set auxiliary machinery is determined according to calculation equation, and its calculation equation isWherein, δ is departure degree, sActualFor the actual operating data of crucial measuring point, sLimit valueControl for crucial measuring point
Limit value processed, s0For crucial measuring point normal operation when meansigma methodss.
7. the adjustable Novel Interval Methods of exerting oneself of a kind of unit based on set auxiliary machinery state estimation according to claim 5,
It is characterized in that: the criterion of the running status of described set auxiliary machinery is,
If the crucial measuring point of monitoring belonging to set auxiliary machinery does not exist, and any warning is transfinited, trip out-of-limit situation, judges this unit
Subsidiary engine stable and reliable operation, that is, be in steady operational status；
If belonging to set auxiliary machinery, the crucial measuring point of monitoring only exists warning transfiniting, there is not tripping operation overrun condition, then judging this machine
Group subsidiary engine can maintain operation in the case of strengthening monitoring reluctantly, that is, be in maintenance running status；
If the crucial measuring point of monitoring belonging to set auxiliary machinery has tripping operation overrun condition, judge that this set auxiliary machinery obvious event
Barrier, and cannot recover in time in the short time, that is, it is in stoppage in transit state.
8. the adjustable Novel Interval Methods of exerting oneself of a kind of unit based on set auxiliary machinery state estimation according to claim 1,
It is characterized in that: described unit dcs system control strategy adopts the rb control strategy of unit dcs system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114862085A (en) * | 2021-12-31 | 2022-08-05 | 中国矿业大学 | Subjective and objective classification combination weighting method for comprehensive evaluation of electric energy quality |
| CN116845887A (en) * | 2023-09-01 | 2023-10-03 | 华北电力科学研究院有限责任公司 | Fault processing method and device for single-side auxiliary machine configuration unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114862085A (en) * | 2021-12-31 | 2022-08-05 | 中国矿业大学 | Subjective and objective classification combination weighting method for comprehensive evaluation of electric energy quality |
| CN116845887A (en) * | 2023-09-01 | 2023-10-03 | 华北电力科学研究院有限责任公司 | Fault processing method and device for single-side auxiliary machine configuration unit |
| CN116845887B (en) * | 2023-09-01 | 2023-11-10 | 华北电力科学研究院有限责任公司 | Fault processing method and device for single-side auxiliary machine configuration unit |
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Application publication date: 20170125 |