CN204668953U - A kind of Intelligent power saving system based on filtering harmonic wave - Google Patents
A kind of Intelligent power saving system based on filtering harmonic wave Download PDFInfo
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- CN204668953U CN204668953U CN201520439821.5U CN201520439821U CN204668953U CN 204668953 U CN204668953 U CN 204668953U CN 201520439821 U CN201520439821 U CN 201520439821U CN 204668953 U CN204668953 U CN 204668953U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model provides a kind of Intelligent power saving system based on filtering harmonic wave, has been arranged in parallel harmonic treating apparatus and real-time dynamic adjustments device on the main circuit, wherein: harmonic treating apparatus includes multiple harmonic wave control unit; Real-time dynamic adjustments device comprises sampling and signal processing circuit, the voltage signal of its input access Real-time Collection and sampled current signals, its output access harmonic wave digital comparator; Harmonic wave digital comparator is connected with switch control rule drive circuit; Switch control rule drive circuit is connected with harmonic treating apparatus, for the real work quantity of harmonic wave control unit in parallel in harmonic treating apparatus chain structure according to the real-time dynamic conditioning of real-Time Compensation signal.Adopt the Intelligent power saving system that the utility model provides, can according to the operating mode situation of reality, the real work quantity of the harmonic wave control unit in real-time dynamic conditioning harmonic treating apparatus, can make economize on electricity reach optimum efficiency.
Description
Technical field
The utility model relates to power-saving technique, particularly relates to a kind of Intelligent power saving system based on filtering harmonic wave.
Background technology
Harmonic wave is to the harm of electrical network, and day by day serious along with industrial development and increasing of residential electricity consumption equipment, outstanding behaviours is: harmonic oscillation produces overvoltage or overcurrent, jeopardizes the safe operation of electric power system, causes the generation of power transmission and distribution accident; Harmonic current or harmonic voltage produce supplementary load loss in stator winding, rotor loop and iron core, reducing the efficiency harmonic current sending out transmission of electricity and power consumption equipment can make the copper loss of transformer increase, so transformer will produce local overheating under serious harmonic load, noise increases, thus acceleration ageing of insulation, shorten the useful life of the electric equipments such as transformer, reduce power supply reliability.Due to the existence of harmonic wave, easily make all kinds of protection of electrical network and automatics produce malfunction or tripping, have outstanding performance in the Microcomputer Protection, integrated automation device of extensive use especially, cause regional power grid to disintegrate, cause the serious accidents such as large-area power-cuts.Harmonic component will produce audio frequency interference in communication system, thus reduce the transmission quality of signal, destroy the normal transmission of signal, not only affect the definition of call, will threaten communication apparatus and personal safety time serious.Mains by harmonics will make measuring instrument, metering device produce error, not reach correct instruction and metering.When circuit breaker cut-offs harmonic content higher electric current, the breaking capacity of circuit breaker will reduce greatly, cause arc reignition, be short-circuited, even circuit breaker blast.
For solving the problem, Chinese patent CN201320494652 discloses a kind of harmonic treating apparatus being applied to electric power system.Although this device serves the effect of good filtering harmonic wave under certain condition, reach the effect of economize on electricity.But this device is owing to cannot carry out dynamic conditioning according to the feature of the actual harmonic wave of commercial power load generation, and when causing real work, the power savings under different electric power system has very large difference.
Utility model content
For solving the problem, the utility model provides a kind of Intelligent power saving system based on filtering harmonic wave, has been arranged in parallel harmonic treating apparatus and real-time dynamic adjustments device on the main circuit, wherein:
Described harmonic treating apparatus includes multiple harmonic wave control unit, multiple harmonic wave control unit parallel connection forms chain structure, each harmonic wave control unit includes a filtering compensation module and a fixed compensation module, described filtering compensation module by bidirectional triode thyristor and inductance in series, described fixed compensation module is made up of the Capacitor banks in parallel with filtering compensation module;
Described real-time dynamic adjustments device comprises sampling and signal processing circuit, the voltage signal of its input access Real-time Collection and sampled current signals, its output access harmonic wave digital comparator; Described harmonic wave digital comparator is connected with switch control rule drive circuit, for sending real-Time Compensation signal according to the comparative result between the harmonic wave of first-harmonic component separation and the harmonic wave of main circuit sample rate current to described switch control rule drive circuit; Described switch control rule drive circuit is connected with described harmonic treating apparatus, for the real work quantity of harmonic wave control unit in parallel in harmonic treating apparatus chain structure according to the real-time dynamic conditioning of real-Time Compensation signal.
On the basis of technique scheme, further, the voltage signal of Real-time Collection that receives of described sampling and signal processing circuit and sampled current signals comprise:
A voltage detecting circuit in parallel on the main circuit, the real-time voltage signal of detection is input to described sampling and signal processing circuit by described voltage detecting circuit;
Connect on the main circuit a current transformer, described current transformer is connected to the input of described sampling and signal processing circuit to obtain the sampled current signals of main circuit.
On the basis of technique scheme, further, described switch control rule drive circuit comprises multiple A.C. contactor, and each A.C. contactor is connected, for controlling the enable of described harmonic wave control unit with harmonic wave control units in series accordingly.
On the basis of technique scheme, further, also comprise a Real-time monitor, described Real-time monitor is connected with described switch control rule drive circuit, for showing the real work quantity of working current value and harmonic wave control unit in real time.
On the basis of technique scheme, further, between described harmonic wave digital comparator and described switch control rule drive circuit, also relay is set, described relay is connected with the A.C. contactor in described switch control rule drive circuit, for controlling the closed of the coil of described A.C. contactor.
The Intelligent power saving system based on filtering harmonic wave that the utility model provides can realize composition according to actual harmonic wave and feature, the harmonic wave control unit of real work in real-time dynamic conditioning harmonic treating apparatus, with the effect making harmonic treating apparatus reach preferred harmonic improvement, thus make better economize on electricity.And in enterprise practical working condition measurement, its test result has also fully reacted the electric energy of this Intelligent power saving system.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of the utility model based on the Intelligent power saving system embodiment of filtering harmonic wave;
Fig. 2 is the harmonic wave control element circuit figure in Fig. 1;
Fig. 3 is the circuit diagram of the A.C. contactor in Fig. 1;
Fig. 4 is the circuit diagram of the utility model based on the another embodiment of Intelligent power saving system of filtering harmonic wave;
Fig. 5 is the utility model based on the circuit diagram of the Intelligent power saving system embodiment again of filtering harmonic wave;
Fig. 6 is the circuit diagram of Fig. 5 repeat circuit.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the circuit diagram of the utility model based on the Intelligent power saving system embodiment of filtering harmonic wave; Fig. 2 is the harmonic wave control element circuit figure in Fig. 1; Fig. 3 is the circuit diagram of the A.C. contactor in Fig. 1.Specifically can see Fig. 1 ~ Fig. 3, this Intelligent power saving system has been arranged in parallel harmonic treating apparatus 10 and real-time dynamic adjustments device 20 on the main circuit, wherein:
Described harmonic treating apparatus 10 includes multiple harmonic wave control unit 100, multiple harmonic wave control unit 100 parallel connection forms chain structure, each harmonic wave control unit 100 includes filtering compensation module 101 and a fixed compensation module 102, described filtering compensation module by bidirectional triode thyristor and inductance in series, described fixed compensation module is made up of the Capacitor banks in parallel with filtering compensation module;
Described real-time dynamic adjustments device 20 comprises sampling and signal processing circuit 201, the voltage signal of its input access Real-time Collection and sampled current signals, its output access harmonic wave digital comparator 202; Described harmonic wave digital comparator 202 is connected with switch control rule drive circuit 203, for sending real-Time Compensation signal according to the comparative result between the harmonic wave of first-harmonic component separation and the harmonic wave of main circuit sample rate current to described switch control rule drive circuit 203; Described switch control rule drive circuit 203 is connected with described harmonic treating apparatus 10, for the real work quantity of harmonic wave control unit 100 in parallel in harmonic treating apparatus 10 chain structure according to the real-time dynamic conditioning of real-Time Compensation signal.
During this system specific works, sampling and signal processing circuit is sent to by outside Real-time Collection voltage signal, and then give harmonic wave digital comparator, harmonic wave digital comparator is by first-harmonic component separation, and extract all harmonic waves, the harmonic wave of the sample rate current of the harmonic components collected and main circuit can be compared by harmonic wave digital comparator, be transported to drive circuit according to comparative result as real-Time Compensation signal, and drive the quantity of harmonic wave control unit module work in corresponding harmonic treating apparatus.When harmonic wave digital comparator specifically compares, laying particular stress on according to influencing factor, can separately between comparing harmonics present and main circuit voltage or electric current.
This system is by increasing real-time dynamic adjustments device, can according to the actual industrial electricity consumption situation of commercial power load 30 on main circuit, the dynamic quantity regulating harmonic wave control unit module work in harmonic treating apparatus in real time, to reach best power savings and effect.
On the basis of above-described embodiment, further, in the specific implementation, the voltage signal of Real-time Collection that receives of described sampling and signal processing circuit 201 and sampled current signals comprise:
A voltage detecting circuit 204 in parallel on the main circuit, the real-time voltage signal of detection is input to described sampling and signal processing circuit 201 by described voltage detecting circuit 204;
Connect on the main circuit a current transformer 205, described current transformer 205 is connected to the input of described sampling and signal processing circuit 201 to obtain the sampled current signals of main circuit.The big current of the electric current in high-voltage system or low-voltage system being become the small area analysis of low-voltage, standard value, is generally 5A or 1A, such as adopts the current transformer of 1000:5 or 2000:5, to obtain the electric current of 5A.
Fig. 4 is the circuit diagram of the utility model based on the another embodiment of Intelligent power saving system of filtering harmonic wave, as shown in Figure 4, on the basis of technique scheme, further, one Real-time monitor 206, described Real-time monitor 206 is connected with described switch control rule drive circuit 203, for showing the real work quantity of working current value and harmonic wave control unit 100 in real time.Watch-dog can be display, and display can arrange wireless communication module, communicates with exterior terminal equipment interconnection, and user can the electric current of real time inspection real work on outside terminal equipment and the real work quantity of harmonic wave governance unit.
Fig. 5 is the utility model based on the circuit diagram of the Intelligent power saving system embodiment again of filtering harmonic wave; Fig. 6 is the circuit diagram of the relay in Fig. 5.See Fig. 5 ~ Fig. 6, on the basis of above-mentioned any embodiment, further, between described harmonic wave digital comparator 202 and described switch control rule drive circuit 203, relay 2021 is also set, described relay 2021 is connected with the A.C. contactor 2031 in described switch control rule drive circuit 203, for controlling the closed of the coil of described A.C. contactor 2031.
Relay can adopt current relay or voltage relay, according to the change of certain input signal, and can be switched on or switched off control circuit, realize the electrical equipment of automatic control and protection electric drive system.The signal of input can be the electricity such as voltage, electric current.Pass through relay, Small current control big current can be realized, namely when electric current minor variations, can be closed by the coil of Control A.C. contactor, realize controlling the break-make of A.C. contactor, thus reach the power-off and energising that control separately certain harmonic wave control unit.
For verifying the actual power savings of the Intelligent power saving system based on filtering harmonic wave that the utility model provides further, actual economize on electricity test has been carried out in A company, measurement condition is high-pressure side ammeter (metering multiple 10000), two 2000KVA transformers, four 1000KVA transformers, power factor is manually fixed on 0.92.Because A company is ceramic tile manufacturer, therefore production capacity use square metre calculates.
The wherein test data report of 13 days in Intelligent power saving system situation closed first half of the month in September by table 1 for A company:
Table 1
Having a rest in table does not check meter shows did not have administrative staff to check meter the same day, but had no effect to overall Data Comparison.Electricity meter-reading is the ammeter data in the electricity charge list that issues of power office, can show true ammeter numerical value at that time.
Can be drawn by table 1, in 13 days that close the Intelligent power saving system based on filtering harmonic wave that the utility model provides, before and after ammeter, difference is 5260-5209.93=50.07, total output 101592 square metres, then every square metre of power consumption is:
50.07*10000/101592=4.9285 degree/square metre.
Table 2 is under identical working condition, and A company the second half of the month in September opens the wherein test data report of 13 days under Intelligent power saving system condition:
Table 2
Can be drawn by table 2, in 13 days that open the Intelligent power saving system based on filtering harmonic wave that the utility model provides, before and after ammeter, difference is 5307.54-5260=47.54, total output 103852 square metres, then every square metre of power consumption is:
47.54*10000/103852=4.5777 degree/square metre.
Associative list 1 and table 2 contrast are seen, from total power saving rate at (50.07-47.54)/50.07=5.05%, the aggregated capacity of 13 days wherein owing to testing below in table 2 is 103852 square metres, be greater than in table 1 101592 square metres that test 13 days above, if therefore when production capacity is identical, its total power saving rate can be higher.Every square metre of power consumption power saving rate, at (4.9285-4.5777)/4.9285=7.12%, has fully demonstrated the technique effect of the utility model system.
In order to embody the consistency compared, further, the ammeter ' s reading meter data of the 8th time ~ the 10th time in the roughly the same table 1 of production capacity can be got, average productivity every day is at 7846 square metres, aggregated capacity is at 23539 square metres, total electric energy that period consumes is at (5243.97-5231.25) * 10000=127200 degree, and every square metre of production capacity all consumes 127200 degree/23539 square metres=5.40 degree/square metre.Get the ammeter ' s reading meter data of the 3rd time ~ the 5th in table 2 again, average productivity is at 7647 square metres, aggregated capacity is at 22940 square metres, total electric energy that period consumes is at (5274.57-5263.44) * 10000=111300 degree, and every square metre of production capacity all consumes 111300 degree/22940 square metres=4.85 degree/square metre.As can be seen from local data, in the much the same situation of production capacity, total power saving rate is at (127200 degree of-111300 degree)/127200 degree=12.5%; The power saving rate of every square metre is at (5.40-4.85)/5.40=11.3%.These data more can show the actual power savings that the utility model Intelligent power saving system produces.
Adopt the Intelligent power saving system based on filtering harmonic wave that the utility model provides, carry out actual economize on electricity test in B company.Measurement condition condition is high-pressure side ammeter (metering multiple 5000), a 2000KVA transformer, a 1600KVA transformer.
Table 3 is that wherein the test data of 10 days is reported (processing siccative is 1739 tons) under B company of another company closes Intelligent power saving system situation April.
Table 3
In shown in table 3 10 day, aggregated capacity is 191292 square metres, and before and after ammeter, difference is 2658.09-2606.8=51.29.Therefore, total power consumption is 51.29*5000=256450 degree, and the power consumption of every square metre of output is 256450 degree/191292 square metres=1.34 degree/square metre.
Table 4 be B company under identical working condition measurement condition, to open in Intelligent power saving system situation the test data report (processing siccative is 2228 tons) of wherein 10 days May.
Table 4
In shown in table 4 10 day, aggregated capacity is 194724 square metres square metres, and before and after ammeter, difference is 2756.49-2708.01=48.48.
But in actual condition, table 4 reality processing siccative is than table 3 many 2228-1739=489 ton, and processing per hour 15 tons, then need 489/15=32.6 hour, per hour according to 130 degree of calculating, then the first correction power consumption that table 4 increases has more 32.6*130=4238 degree;
Table 4 actual adding, compares with table 3 man-hour, on average opens the 75kw table grinder of 2 hours more, then the second correction power consumption that table 4 increases has more 7*75*2=1050 degree;
Table 4 actual adding, compares with table 3 man-hour, and many abrasive materials have more 40.53 tons, is equivalent to open 75kw table grinder 12.5 hours more, then the 3rd correction power consumption that table 4 increases has more 75*12.5=937.5 ton.
To sum up, table 4 through the total power consumption revised is:
48.48*5000-4238-1050-937.5=236174.5 degree, then the power consumption of every square metre of output is 236174.5 degree/194724 square metres=1.21 degree/square metre.
Associative list 3 and table 4 contrast are seen, from total power saving rate (256450-236174.5)/256450=7.9%, every square metre of power consumption power saving rate, at (1.34-1.21)/1.34=9.7%, embodies the technique effect of the utility model Intelligent power saving system further.
The economize on electricity effect of the Intelligent power saving system based on filtering harmonic wave that the utility model provides in real work, and the operating time is longer, production capacity is larger, and its effect can be more obvious.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (5)
1. based on an Intelligent power saving system for filtering harmonic wave, it is characterized in that, be arranged in parallel harmonic treating apparatus (10) and real-time dynamic adjustments device (20) on the main circuit, wherein:
Described harmonic treating apparatus (10) includes multiple harmonic wave control unit (100), multiple harmonic wave control unit (100) parallel connection forms chain structure, each harmonic wave control unit (100) includes a filtering compensation module (101) and a fixed compensation module (102), described filtering compensation module by bidirectional triode thyristor and inductance in series, described fixed compensation module is made up of the Capacitor banks in parallel with filtering compensation module;
Described real-time dynamic adjustments device (20) comprises sampling and signal processing circuit (201), the voltage signal of its input access Real-time Collection and sampled current signals, its output access harmonic wave digital comparator (202); Described harmonic wave digital comparator (202) is connected with switch control rule drive circuit (203), sends real-Time Compensation signal for the comparative result according to the harmonic wave of first-harmonic component separation and the harmonic wave of main circuit sample rate current to described switch control rule drive circuit (203); Described switch control rule drive circuit (203) is connected with described harmonic treating apparatus (10), for the real work quantity of harmonic wave control unit (100) in parallel in harmonic treating apparatus (10) chain structure according to the real-time dynamic conditioning of real-Time Compensation signal.
2. the Intelligent power saving system based on filtering harmonic wave according to claim 1, is characterized in that, the voltage signal of the Real-time Collection that described sampling and signal processing circuit (201) receive and sampled current signals comprise:
A voltage detecting circuit (204) in parallel on the main circuit, the real-time voltage signal of detection is input to described sampling and signal processing circuit (201) by described voltage detecting circuit (204);
Connect on the main circuit a current transformer (205), described current transformer (205) is connected to the input of described sampling and signal processing circuit (201) to obtain the sampled current signals of main circuit.
3. the Intelligent power saving system based on filtering harmonic wave according to claim 1, it is characterized in that, described switch control rule drive circuit (203) comprises multiple A.C. contactor (2031), each A.C. contactor (2031) and accordingly harmonic wave control unit (100) are connected in series, for controlling the enable of described harmonic wave control unit (100).
4. the Intelligent power saving system based on filtering harmonic wave according to claim 1, it is characterized in that, also comprise a Real-time monitor (206), described Real-time monitor (206) is connected with described switch control rule drive circuit (203), for showing the real work quantity of working current value and harmonic wave control unit (100) in real time.
5. the Intelligent power saving system based on filtering harmonic wave according to claim 3, it is characterized in that, between described harmonic wave digital comparator (202) and described switch control rule drive circuit (203), relay (2021) is also set, described relay (2021) is connected with the A.C. contactor (2031) in described switch control rule drive circuit (203), for controlling the closed of the coil of described A.C. contactor (2031).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901312A (en) * | 2015-06-24 | 2015-09-09 | 厦门恒瑞特节能科技有限公司 | Intelligent power saving system based on harmonic wave filtering out |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901312A (en) * | 2015-06-24 | 2015-09-09 | 厦门恒瑞特节能科技有限公司 | Intelligent power saving system based on harmonic wave filtering out |
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Granted publication date: 20150923 Termination date: 20180624 |