CN103741198A - Power-peak avoidance adjusting and controlling method for rolled wire and galvanized wire production - Google Patents
Power-peak avoidance adjusting and controlling method for rolled wire and galvanized wire production Download PDFInfo
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- CN103741198A CN103741198A CN201310726046.7A CN201310726046A CN103741198A CN 103741198 A CN103741198 A CN 103741198A CN 201310726046 A CN201310726046 A CN 201310726046A CN 103741198 A CN103741198 A CN 103741198A
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Abstract
The invention discloses a power-peak avoidance adjusting and controlling method for rolled wire and a galvanized wire production. The power-peak avoidance adjusting and controlling method is characterized in that the power is limited by comparing whether the average power in continuous time t exceeds a set value, and specifically, the adjustment and the control are carried out by adopting the measures of reducing the production speed of the rolled wire, limiting the increase of the power and switching a galvanizing groove for galvanizing to the heat preservation waiting state and the like. The power-peak avoidance adjusting and controlling method disclosed by the invention has the advantages that the adjustment and the control can be accurately carried out in time, the efficiency is high, and the power-peak overlapping period can be effectively avoided; the influence of the limited electric-quantity peak on the quality of a rolled wire product is furthest reduced in the adjusting and controlling period.
Description
Technical field
The present invention relates to a kind of electric power and keep away peak regulate and control method, specifically a kind of Plate Production enterprise uses rolls extensions, galvanizing line electric power is kept away peak regulate and control method.
Background technology
In supply of electric power, adopt contract capacity powering mode with large-scale power user power supply enterprise (as electric company), this kind of pattern is according to the certain moon basic charge as per installed capacity of contract amount of capacity payment.When surpassing contract capacity, the part that surpasses contract capacity will be taked fine measure.
Judge user power utilization amount whether surpass contract amount according to being power demand quantity, power demand quantity is exactly the average maximum value (getting 15 minutes in power industry) in for some time more.Therefore, if not in addition management and control will increase to large-scale electricity consumption enterprise or because the too high enterprise of basic charge as per installed capacity causes electric cost, or because being imposed a fine over contract capacity.
Roll the use electrical characteristic of extensions: according to rolling extensions electricity consumption curve from data gathering system observation, can find out, its real-time power is reciprocating variation from low to high, and its real-time power changes according to the speed of the thickness of the steel band of current production, production.During identical thickness of strips, the faster power of speed is higher; During identical speed, the thicker power of steel band is higher.General maximum power all appears at the high regime of pony-roughing pass (pass).
The use electrical characteristic of galvanizing line zinc bath (POT): the real-time power of the POT using is to be also the reciprocating variation of height.
When rolling the peak of power consumption of extensions and galvanizing line POT while all overlaping, real-time power will surpass contract capacity.
At present, in order to solve real-time power by the problem of super contract capacity, general employing manually adjusted the overlapping period avoided, but this method is because producing the reason of line characteristic and fitness, causes avoiding timely and effectively peak of power consumption.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind ofly roll extensions, galvanizing line electric power is kept away peak regulate and control method, the method regulates and controls promptly and accurately, efficiency is high.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
Roll extensions, galvanizing line electric power is kept away a peak regulate and control method, when the mean power in continuous time t surpasses set(ting)value:
Roll and prolong part, comprise that two are rolled extensions, detect and to roll rolling in extensions and prolong machine whether in last passage:
1) if two are rolled rolling of extensions and prolong machine all not in last passage, the rolling of extensions of rolling that realtime power is high prolonged to machine reduction of speed, another rolls rolling of extensions and prolongs the rising of machine power-limiting, setting-up time t
1, reach time t
1automatically return to afterwards and change front state;
2) if there is one to roll rolling of extensions and prolong machine in last passage, the rolling of extensions of rolling in last passage not prolonged to machine reduction of speed, another rolls rolling of extensions and prolongs machine power-limiting and rise, setting-up time t
2, reach time t
2the rear front state of variation that automatically recovers;
3) if two are rolled rolling of extensions and prolong machine all in last passage, by two roll rolling of extensions prolong machine all reduction of speed to half of rolling that rolling of extensions prolong that machine sets top speed, produce, setting-up time t
3, reach time t
3the rear front state of variation that automatically recovers;
Zinc-plated part, comprises the first galvanizing line, the second galvanizing line and the 3rd galvanizing line; The zinc bath that contains 55% aluminium in plating bath is called to the first zinc bath, is all that the zinc bath of zinc is called the second zinc bath in plating bath, and the zinc bath that contains 5% aluminium in plating bath is called the 3rd zinc bath; Described the first galvanizing line comprises the first zinc bath, fritting groove and the second zinc bath, described the second galvanizing line comprises the second zinc bath and the 3rd zinc bath, described the 3rd galvanizing line comprises the first zinc bath, fritting groove and the second zinc bath, the first zinc bath and fritting groove on galvanizing line are used production simultaneously, and can only there be a zinc bath to use on every galvanizing line simultaneously, produce;
The first galvanizing line:
If while using the first zinc bath and fritting groove to produce, and the power of fritting groove is when W is following, and the first zinc bath, fritting groove switch to insulation waiting status, setting-up time t
4, reach time t
4the rear front state of variation that automatically recovers;
If while using the second fritting groove, and distance switched to insulation waiting status, setting-up time t by the second fritting groove when be last time greater than T switching time
5, reach time t
5the rear front state of variation that automatically recovers; If while using the second fritting groove, distance when be last time not more than T switching time, is not switched current state;
The second galvanizing line:
No matter be use the second fritting groove to produce or use the 3rd fritting groove to produce, in distance, when be last time greater than T switching time, switched to insulation waiting status, setting-up time t
6, reach time t
6the rear front state of variation that automatically recovers; In distance, when be last time not more than T switching time, do not switch current state;
The 3rd galvanizing line:
No matter be use the first zinc bath and fritting groove to produce or use the second fritting groove to produce, in distance, when be last time greater than T switching time, switched to insulation waiting status, setting-up time t
7, reach time t
7the rear front state of variation that automatically recovers; In distance, when be last time not more than T switching time, do not switch current state.
Described t
1=t
2=t
3=t
4=t
5=t
6=t
7=90 seconds.
The power W=500kw of described fritting groove.
Described time T is 15 minutes, and t is 15 minutes.
For making the impact of rolling the restricted electric weight of extensions quality product peak be down to minimum level, while rolling extensions reduction of speed for current different thickness of slab with plate is wide does corresponding processing:
If the plate of current production is wide more than 1000mm, and the thickness of slab that current pass is produced is when 0.5mm is above, obtains rolling after signal to reduce the speed rolling of extensions and prolongs motor speed and be down to 150 ms/min;
If the plate of current production is wide more than 1000mm, and the thickness of slab that current pass is produced is when 0.5mm is above, obtains rolling after signal to reduce the speed rolling of extensions and prolongs motor speed and be down to 150 ms/min; Otherwise prolong motor speed and be down to 400 ms/min rolling rolling of extensions.
At one, roll rolling of extensions and prolong after machine reduction of speed, another rolls rolling of extensions and prolongs the method that acc power restriction rises and be:
If present speed is being set half of top speed when following, allow to accelerate to half of setting top speed;
If present speed set top speed when over half reduction of speed to half that set top speed produce.
The inventive method can regulate and control timely and accurately, and efficiency is high, can effectively avoid peak of power consumption overlapping period; And reduce to greatest extent the impact of rolling the restricted electric weight of extensions quality product peak period in regulation and control.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the schema of the inventive method.
Embodiment
As shown in Figure 1, the actual electricity consumption situation that reads full factory and respectively produce line from substation (as 110KV substation) by PLC system, according to the real data reading, calculate continuous 15 minutes mean powers of full factory, and using these data as controlling the foundation of respectively producing line power consumption, and network and automatically take reduction of speed measure by PLC.
When continuous 15 minutes mean powers surpass set(ting)value, when (as being set as 24700KW), need to regulate and control, to avoid overlapping peak of power consumption, concrete measure is:
Roll and prolong part:
Roll and prolong part and comprise that two are rolled extensions, detect and to roll rolling in extensions and prolong machine whether in last passage:
1) if two are rolled rolling of extensions and prolong machine all not in last passage, the rolling of extensions of rolling that realtime power is high prolonged to machine reduction of speed, another rolls rolling of extensions and prolongs the rising of machine power-limiting, and setting-up time 90 seconds reaches 90 seconds and automatically returns to afterwards the front state of variation;
2) if there is one to roll rolling of extensions and prolong machine in last passage, the rolling of extensions of rolling in last passage not prolonged to machine reduction of speed, another rolls rolling of extensions and prolongs machine power-limiting and rise, setting-up time 90 seconds, state before reaching 90 seconds and automatically recovering afterwards to change;
3) if two are rolled rolling of extensions and prolong machine all in last passage, by two roll rolling of extensions prolong machine all reduction of speed to half of rolling that rolling of extensions prolong that machine sets top speed, produce, setting-up time 90 seconds, state before reaching 90 seconds and automatically recovering afterwards to change.
For making the impact of rolling the restricted electric weight of extensions quality product peak be down to minimum level, wide for current different thickness of slab and plate, to rolling extensions, roll and prolong machine reduction of speed and process different:
If the plate of current production is wide more than 1000mm, and the thickness of slab that current pass is produced when 0.5mm is above (in Fig. 1 related the wide condition of thickness of slab, plate), obtains rolling after signal to reduce the speed rolling of extensions and prolong motor speed and be down to 150 ms/min;
If the plate of current production is wide more than 1000mm, and the thickness of slab that current pass is produced is when 0.5mm is above, obtains rolling after signal to reduce the speed rolling of extensions and prolongs motor speed and be down to 150 ms/min; Otherwise prolong motor speed and be down to 400 ms/min rolling rolling of extensions.
At one, roll rolling of extensions and prolong after machine reduction of speed, another rolls rolling of extensions and prolongs the method that acc power restriction rises and be:
If present speed is being set half of top speed when following, allow to accelerate to half of setting top speed;
If present speed set top speed when over half reduction of speed to half that set top speed produce.
Zinc-plated part:
Zinc-plated part comprises the first galvanizing line, the second galvanizing line and the 3rd galvanizing line; The zinc bath that contains 55% aluminium in plating bath is called to the first zinc bath (being GL), is all that the zinc bath of zinc is called the second zinc bath (being GI) in plating bath, and the zinc bath that contains 5% aluminium in plating bath is called the 3rd zinc bath (being GF); Described the first galvanizing line comprises the first zinc bath, fritting groove (being PM) and the second zinc bath, described the second galvanizing line comprises the second zinc bath and the 3rd zinc bath, described the 3rd galvanizing line comprises the first zinc bath, fritting groove and the second zinc bath, the first zinc bath and fritting groove on galvanizing line are used production simultaneously, and can only there be a zinc bath to use on every galvanizing line simultaneously, produce;
The first galvanizing line:
If while using the first zinc bath and fritting groove to produce, and the power of fritting groove is when 500kw is following, and the first zinc bath, fritting groove switch to insulation waiting status, setting-up time 90 seconds, state before reaching 90 seconds and automatically recovering afterwards to change;
If while using the second fritting groove, and distance switches to insulation waiting status by the second fritting groove while being last time greater than 15 minutes switching time, setting-up time 90 seconds, state before reaching 90 seconds and automatically recovering afterwards to change; If while using the second fritting groove, when distance was last time not more than 15 minutes switching time, do not switch current state;
The second galvanizing line:
Be no matter use the second fritting groove to produce or use the 3rd fritting groove to produce, when distance is last time greater than 15 minutes switching time, switched to insulation waiting status, setting-up time 90 seconds, reach 90 seconds time automatically recover afterwards to change before state; When being last time not more than 15 minutes switching time, distance do not switch current state;
The 3rd galvanizing line:
Be no matter use the first zinc bath and fritting groove to produce or use the second fritting groove to produce, when distance is last time greater than 15 minutes switching time, switched to insulation waiting status, setting-up time 90 seconds, reach 90 seconds time automatically recover afterwards to change before state; When being last time not more than 15 minutes switching time, distance do not switch current state.
Above-described embodiment does not limit the present invention in any way, and every employing is equal to replaces or technical scheme that the mode of equivalent transformation obtains all drops in protection scope of the present invention.
Claims (6)
1. roll extensions, galvanizing line electric power is kept away a peak regulate and control method, while it is characterized in that mean power in continuous time t surpasses set(ting)value:
Roll and prolong part, comprise that two are rolled extensions, detect and to roll rolling in extensions and prolong machine whether in last passage:
1) if two are rolled rolling of extensions and prolong machine all not in last passage, the rolling of extensions of rolling that realtime power is high prolonged to machine reduction of speed, another rolls rolling of extensions and prolongs the rising of machine power-limiting, setting-up time t
1, reach time t
1automatically return to afterwards and change front state;
2) if there is one to roll rolling of extensions and prolong machine in last passage, the rolling of extensions of rolling in last passage not prolonged to machine reduction of speed, another rolls rolling of extensions and prolongs machine power-limiting and rise, setting-up time t
2, reach time t
2the rear front state of variation that automatically recovers;
3) if two are rolled rolling of extensions and prolong machine all in last passage, by two roll rolling of extensions prolong machine all reduction of speed to half of rolling that rolling of extensions prolong that machine sets top speed, produce, setting-up time t
3, reach time t
3the rear front state of variation that automatically recovers;
Zinc-plated part, comprises the first galvanizing line, the second galvanizing line and the 3rd galvanizing line; The zinc bath that contains 55% aluminium in plating bath is called to the first zinc bath, is all that the zinc bath of zinc is called the second zinc bath in plating bath, and the zinc bath that contains 5% aluminium in plating bath is called the 3rd zinc bath; Described the first galvanizing line comprises the first zinc bath, fritting groove and the second zinc bath, described the second galvanizing line comprises the second zinc bath and the 3rd zinc bath, described the 3rd galvanizing line comprises the first zinc bath, fritting groove and the second zinc bath, the first zinc bath and fritting groove on galvanizing line are used production simultaneously, and can only there be a zinc bath to use on every galvanizing line simultaneously, produce;
The first galvanizing line:
If while using the first zinc bath and fritting groove to produce, and the power of fritting groove is when W is following, and the first zinc bath, fritting groove switch to insulation waiting status, setting-up time t
4, reach time t
4the rear front state of variation that automatically recovers;
If while using the second fritting groove, and distance switched to insulation waiting status, setting-up time t by the second fritting groove when be last time greater than T switching time
5, reach time t
5the rear front state of variation that automatically recovers; If while using the second fritting groove, distance when be last time not more than T switching time, is not switched current state;
The second galvanizing line:
No matter be use the second fritting groove to produce or use the 3rd fritting groove to produce, in distance, when be last time greater than T switching time, switched to insulation waiting status, setting-up time t
6, reach time t
6the rear front state of variation that automatically recovers; In distance, when be last time not more than T switching time, do not switch current state;
The 3rd galvanizing line:
No matter be use the first zinc bath and fritting groove to produce or use the second fritting groove to produce, in distance, when be last time greater than T switching time, switched to insulation waiting status, setting-up time t
7, reach time t
7the rear front state of variation that automatically recovers; In distance, when be last time not more than T switching time, do not switch current state.
2. according to claim 1ly a kind ofly roll extensions, galvanizing line electric power is kept away peak regulate and control method, it is characterized in that: described t
1=t
2=t
3=t
4=t
5=t
6=t
7=90 seconds.
3. according to claim 1ly a kind ofly roll extensions, galvanizing line electric power is kept away peak regulate and control method, it is characterized in that: the power W=500kw of described fritting groove.
4. according to claim 1ly a kind ofly roll extensions, galvanizing line electric power is kept away peak regulate and control method, it is characterized in that: described time T, t are 15 minutes.
According to a kind of described in claim 1,2,3 or 4 roll extensions, galvanizing line electric power is kept away peak regulate and control method, it is characterized in that: if the plate of current production is wide more than 1000mm, and the thickness of slab that current pass is produced is when 0.5mm is above, obtains rolling after signal to reduce the speed rolling of extensions and prolong motor speed and be down to 150 ms/min; Otherwise prolong motor speed and be down to 400 ms/min rolling rolling of extensions.
According to a kind of described in claim 1,2,3 or 4 roll extensions, galvanizing line electric power is kept away peak regulate and control method, it is characterized in that one is rolled rolling of extensions and prolongs after machine reduction of speed, another rolls rolling of extensions and prolongs the method that acc power restriction rises and be:
If present speed is being set half of top speed when following, half that accelerates to setting top speed produced;
If present speed is being set top speed when over half, reduction of speed to half that set top speed produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726046.7A CN103741198B (en) | 2013-12-25 | 2013-12-25 | One rolls extensions, galvanized wire electric power keeps away peak regulation and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726046.7A CN103741198B (en) | 2013-12-25 | 2013-12-25 | One rolls extensions, galvanized wire electric power keeps away peak regulation and control method |
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| Publication Number | Publication Date |
|---|---|
| CN103741198A true CN103741198A (en) | 2014-04-23 |
| CN103741198B CN103741198B (en) | 2016-09-07 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460852A (en) * | 1981-02-06 | 1984-07-17 | Sumitomo Kinzoku Kogyo Kabushiki Gaisha | Method of controlling mill motors speeds in a cold tandem mill |
| JPS6260490A (en) * | 1985-09-06 | 1987-03-17 | Sumitomo Metal Ind Ltd | Control method of different speed of rolling mill |
| CN1464802A (en) * | 2001-07-17 | 2003-12-31 | 株式会社哈热那 | Structural body and method for cold rolling |
-
2013
- 2013-12-25 CN CN201310726046.7A patent/CN103741198B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460852A (en) * | 1981-02-06 | 1984-07-17 | Sumitomo Kinzoku Kogyo Kabushiki Gaisha | Method of controlling mill motors speeds in a cold tandem mill |
| JPS6260490A (en) * | 1985-09-06 | 1987-03-17 | Sumitomo Metal Ind Ltd | Control method of different speed of rolling mill |
| CN1464802A (en) * | 2001-07-17 | 2003-12-31 | 株式会社哈热那 | Structural body and method for cold rolling |
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| CN103741198B (en) | 2016-09-07 |
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