CN104092221A - Optimized and optimally-cutting reactive compensation method and reactive compensation device - Google Patents
Optimized and optimally-cutting reactive compensation method and reactive compensation device Download PDFInfo
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- CN104092221A CN104092221A CN201410274874.6A CN201410274874A CN104092221A CN 104092221 A CN104092221 A CN 104092221A CN 201410274874 A CN201410274874 A CN 201410274874A CN 104092221 A CN104092221 A CN 104092221A
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Abstract
The invention provides an optimized and optimally-cutting reactive compensation method and reactive compensation device. The method can judge a control strategy through composite physical quantity of three-phase voltage, three-phase reactive power and power factors to form a capacitor switching strategy of cutting off a capacitor and optimizing and optimally cutting a switching capacitor step by step, and accordingly reactive compensation can be accurately finished. The capacitor switching strategy uses a switching capacitor optimizing and optimally cutting method to optimize the core portion of the reactive compensation method based on work timing of an input capacitor. The optimized and optimal-cutting capacitor switching strategy is simple, practical and easy to achieve, can carry out intelligent control switch to a common compensation capacitor and a divided compensation capacitor, can meet the application requirements and accuracy requirements of reactive compensation of most low-voltage distributing networks and brings convenience to design, debugging, operation and using of a reactive compensation controller.
Description
Technical field
The control method and the control device that the present invention relates to power supply and distribution of electric power, particularly relate to distribution network var compensation method and reactive power compensator.
Background technology
Idle compensating control is the core component of reactive power compensator, and power-less compensation control method is one of key technology in idle compensating control.Compensating control method mainly comprises switching determination strategy and switching capacitance selection strategy two parts.
Prior art switching determination strategy, is divided into power factor controlling mode, voltage control mode, reactive current control mode, Reactive Power Control mode and compound control mode by controlling physical quantity.Described compound control mode comprises again voltage and the compound control mode of reactive power, the compound control mode of reactive power and power factor, and voltage and the compound control mode of power factor.
Prior art capacitor switching mode has order switching, switching cycle and coding switching.The mode of operation of order switching is that the preceding capacitor group of sequence is first thrown afterwards and cut, and after the posterior capacitor group that sorts, throws and first cuts.The mode of operation of switching cycle is first to drop into first excision, after rear input, excises.Order switching and switching cycle such as are all generally at the capacitance arrangement patterns of capacity, and switching precision is had to certain influence, for this problem, have produced again coding switching.Coding switching refers in the time of configuration electric capacity, meets certain rule between the capacity of these electric capacity, and corresponding with specific coding, and each corresponding capacitor combination of encoding forms a kind of combination of switching capacity.The idle compensating control as required capacity of switching finds corresponding coding, then sends switching control command according to coding.
Also there is following defect and weak point in prior art reactive-load compensation method:
1. control and judge that the capacitor switching of reactive power compensation is the implementation of early stage idle compensating control according to power factor, easily produce idle sending and the problem such as throw in-of oscillation, this single control mode is progressively eliminated.In addition, other single control mode is as voltage control mode, reactive current control mode, Reactive Power Control mode also find that there is incomplete place in actual applications, compensates insufficiently during as heavy duty, and single control target is rapid not, accurate etc.Present most idle compensating control all adopts compound control mode.Some also on the basis of compound control mode to these compound controlled quentity controlled variable application fuzzy control theories, this has increased the complexity that application program realizes greatly, actual effect is also limited;
2. order switching makes the capacitor group of sequence number above often in the state of coming into operation, and the heat of accumulation is difficult for distributing, and affects the useful life of capacitor; And the posterior capacitor group switching switch frequent movement that sorts has a negative impact to the normal use of reactive power compensator equally; Therefore order switching mode is recycled gradually switching and replaces; Switching cycle makes the utilization rate of capacitor group and fling-cut switch basically identical, thereby has extended the useful life of whole reactive power compensator; Order switching and switching cycle are taked the capacitance arrangement mode that waits capacity to distribute substantially, although fairly simple, it is also convenient to control, and are beneficial to and produce and maintenance, and compensation speed is slow, is unfavorable for improving the compensation precision of reactive power compensation; For coding switching, adopt the electric capacity of different capabilities can meet on-the-spot most compensation precision demand by certain combination, and electric capacity progression is more, precision is higher.Generally this just needs the electric capacity of considerable different capabilities, gives the production of electric capacity and safeguards to use and brought inconvenience.
Summary of the invention
The technical problem to be solved in the present invention is to avoid the deficiencies in the prior art part and proposes a kind of preferred excellent reactive-load compensation method and reactive power compensator cut based on idle compensating control, adopt in " preferably excellent cutting " the switching capacitance method dropping on electric capacity work timing basis, and pass through three-phase voltage, the compound physical amount of three phase reactive power and power factor judges control strategy, thereby effectively overcome order switching, switching cycle such as need to configure at the restriction of capacity, improve control precision, overcome the restriction of coding switching to capacitance, compensation when throw in-of oscillation while effectively having prevented underloading and heavy duty is insufficient, reach generally and be suitable for, convenient, flexible, switching is effect fast and accurately.
The present invention solve the technical problem can be by realizing by the following technical solutions:
Propose a kind of preferred excellent reactive-load compensation method of cutting based on idle compensating control, comprise the steps:
A. determine the capacity levels of mending altogether electric capacity according to the parameters of idle compensating control setting, each electric capacity quantity of mending altogether capacitance rank, point capacity levels of mending electric capacity, and the electric capacity quantity of each point of benefit capacitance rank;
B. the electrical operation parameter of power distribution network is sampled, obtain sampling electrical operation parameter;
C. determine the electric capacity coming into operation and the electric capacity not coming into operation, the electric capacity coming into operation is carried out to timing statistics, determine the continuous operation timing of the electric capacity coming into operation and add up to work timing;
D. the sampling electrical operation parameter of obtaining according to step B, determines capacitor switching scheme,
If sampling electrical operation parameter all exceeds the span that idle compensating control arranges, excise immediately all electric capacity;
If between the upper limit of maximum voltage span and the upper limit of secondary voltage span that the sampled voltage in sampling electrical operation parameter arranges at idle compensating control, execution step E;
If in the secondary voltage span that the sampled voltage in sampling electrical operation parameter arranges at idle compensating control, and outside the power factor span that sampled power factor arranges at idle compensating control, the capacitance that the definite needs of lower limit of the power factor span arranging according to idle compensating control compensate, and the capacitance having compensated is determined the minimum value of building-out capacitor amount; If the minimum value of this building-out capacitor amount is less than the input capacitance that idle compensating control arranges, just excise all electric capacity, otherwise execution step F;
E. control and excise step by step electric capacity;
F. adopt the preferably excellent switching capacitance of cutting;
Each capacitance rank and each point mended altogether mended capacitance rank and carried out following processing procedure,
F1. the electric capacity in capacity levels is done to subtraction from big to small, should drop into electric capacity number CPS1 using the number of times that allows to subtract each other as this capacity levels, and determine the electric capacity of the input number CPS0 of this capacity levels;
If F2. CPS1 is greater than CPS0, in the electric capacity not putting into operation in described capacity levels, select CPS1-CPS0 electric capacity to put into operation;
If F3. CPS1 is less than CPS0, in the electric capacity having put into operation in described capacity levels, select CPS0-CPS1 electric capacity to excise.
Particularly, after the F2 step by step of step F carries out, and F3 carries out as follows step by step after carrying out step by step,
F4. generate switching command code, and switching command code is backed up relatively, if variation detected, just send switching command code, to realize capacitor switching; And,
Comprise if switching command code is determined in the capacitor bank dropping into the electric capacity putting into operation, the electric capacity that this is putting into operation continues operation; If the electric capacity having put into operation is not in the capacitor bank of the definite input of switching command code, this electric capacity having put into operation is out of service.
In addition, in whole method implementation, also carry out following steps simultaneously,
P1., continuous operating time threshold value is set;
Be not less than described continuous operating time threshold value if P2. monitor the continuous operation timing of the electric capacity that puts into operation, determine that this electric capacity that puts into operation is overrun electric capacity, in the electric capacity not putting into operation, select an accumulative total minimum electric capacity of timing of working to replace described overrun electric capacity.
In steps A, the parameters of idle compensating control setting comprises maximum voltage span, secondary voltage span, and harmonic limits scope, mends electric capacity way altogether, and point benefit electric capacity way, mends capacitance profile parameter altogether, and point benefit capacitance profile parameter; The upper limit of described maximum voltage span is set to the upper limit on voltage, and the lower limit of maximum voltage span is set to lower limit under voltage; The upper limit of described secondary voltage span is set to upper voltage limit, and the lower limit of secondary voltage span is set to lower voltage limit.
Described in step B, the electrical operation parameter of power distribution network comprises three-phase voltage, three-phase current effective value, three phases active power, three phase reactive power, three-phase activity coefficient and three phase harmonic amplitude.
Particularly, described steps A comprises as follows step by step,
A1. determine and mend altogether capacitance and point benefit capacitance according to the parameters of idle compensating control setting;
A2. by capacitance order from small to large, common benefit electric capacity is sorted;
A3. by capacitance order from small to large, point benefit electric capacity is sorted;
A4. according to mending electric capacity statistics altogether, common benefit capacitance rank is set, and determines each electric capacity quantity of mending altogether capacitance rank;
A5. according to a point benefit electric capacity statistics, arrange to divide and mend capacitance rank, and determine the electric capacity quantity of each point of benefit capacitance rank.
More specifically, described step C comprises as follows step by step,
C1. check that each electric capacity and each point mended altogether mend electric capacity whether put into operation Status Flag, i.e. timing index; For common benefit electric capacity and point benefit electric capacity of the Status Flag that do not put into operation, by their continuous operation timing zero clearing; For the common benefit electric capacity and point benefit electric capacity that have the Status Flag that puts into operation, execution step C2.
C2. each electric capacity of mending is altogether carried out as follows step by step,
For the common benefit electric capacity having come into operation, cumulative this mended altogether the continuous operation timing of electric capacity and added up to work timing; For the common benefit electric capacity also not coming into operation, maintain current continuous operation timing and add up to work timing;
C3. respectively point benefit electric capacity of each phase place is carried out as follows step by step by phase place,
For the electric capacity of point mending having come into operation, cumulative this point mended the timing of working of the continuous operation timing of electric capacity and accumulative total; For point benefit electric capacity also not coming into operation, maintain current continuous operation timing and add up to work timing.
For excising step by step electric capacity, described step e comprises as follows step by step,
If E1. the three-phase sampled voltage in sampling electrical operation parameter is all between the upper limit of maximum voltage span and the upper limit of secondary voltage span arranging at idle compensating control, execution step E2; If having a phase sampler voltage or two-phase sampled voltage in the three-phase sampled voltage in sampling electrical operation parameter is between the upper limit of maximum voltage span and the upper limit of secondary voltage span arranging at idle compensating control, execution step E3;
E2. select one group to mend altogether electric capacity excision;
If the common benefit electric capacity of selecting excises unsuccessfully, select respectively point benefit electric capacity excision of three-phase;
E3. for the each phase in sampled voltage place between the upper limit of maximum voltage span and the upper limit of secondary voltage span that arrange at idle compensating control, carry out as follows step by step respectively,
Select one point to mend electric capacity excision; If point benefit electric capacity excises unsuccessfully, just select one to mend altogether electric capacity excision.
For balanced electric capacity drops into frequency, in F2 step by step, while selecting CPS1-CPS0 electric capacity to put into operation in the electric capacity not putting into operation in capacity levels, the electric capacity of the timing minimum of selecting totally to work puts into operation; In F3 step by step, while selecting CPS0-CPS1 electric capacity to excise in the electric capacity having put into operation, select the electric capacity excision of stream time maximum in capacity levels.
The present invention solve the technical problem can also be by realizing by the following technical solutions:
Design, manufacture a kind of reactive power compensator for power distribution network configuration, comprise idle compensating control, and be electrically connected the electric parameter sampling module of this idle compensating control; The electric parameter that described sampling controller gathers according to electric parameter sampling module, completes the reactive power compensation to power distribution network by the preferred excellent reactive-load compensation method of cutting based on idle compensating control described in claim 1.
Compared with the existing technology, the present invention's " preferably excellent reactive-load compensation method and the reactive power compensator cut " technique effect is:
1. the preferably simple and practical easy realization of the excellent capacitor switching strategy of cutting of the present invention, can carry out Based Intelligent Control switching to common benefit electric capacity, point benefit electric capacity, can meet application needs and the required precision of most low-voltage distribution network reactive power compensations, facilitate design, debugging, the operation of idle compensating control to use;
2. the preferred excellent capacitor switching method of cutting neither limits the intelligent capacitor combination of the capacity such as requirement, does not also limit (coding) intelligent capacitor combination that requires specified vol, has facilitated production, is convenient to the selection of on-the-spot Scheme of Reactive Power Compensation and practices; Meanwhile, this scheme also has reference significance to the control of reactive power compensating design of other occasion;
3. the present invention is by adding up the continuous operation timing of electric capacity and adding up to work timing, and reasonably the each electric capacity of coordinated allocation is put into and uses or excision, the electric capacity utilance of raising, and the operation troubles rate of reduction, has saved operating cost.
Brief description of the drawings
Fig. 1 is that the present invention's " preferably excellent reactive-load compensation method and reactive power compensator cut " preferred embodiment carries out the schematic flow sheet of capacitor combination calculation of parameter in steps A;
Fig. 2 is described preferred embodiment at step C to common benefit electric capacity and point mends the come into operation schematic flow sheet of timing of electric capacity;
Fig. 3 is the schematic flow sheet that described preferred embodiment carries out " voltage, idle, power factor " comprehensive deterministic process in step D;
Fig. 4 is the schematic flow sheet that excises step by step capacitive process described in described preferred embodiment step e;
Fig. 5 is that described preferred embodiment is at the preferably excellent schematic flow sheet of cutting switching capacitance process of step F.
Embodiment
Be described in further detail below in conjunction with accompanying drawing illustrated embodiment.
The present invention proposes a kind of preferred excellent reactive-load compensation method of cutting based on idle compensating control, as shown in Figures 1 to 5, comprises the steps that A is to step F:
A. determine the capacity levels of mending altogether electric capacity according to the parameters of idle compensating control setting, each electric capacity quantity of mending altogether capacitance rank, point capacity levels of mending electric capacity, and the electric capacity quantity of each point of benefit capacitance rank.
The preferred embodiment of the present invention, as shown in Figure 1, steps A specifically comprises as follows step by step,
A1. determine and mend altogether capacitance and point benefit capacitance according to the parameters of idle compensating control setting;
The parameters of described idle compensating control setting comprises maximum voltage span, secondary voltage span, and harmonic limits scope, mends electric capacity way altogether, and point benefit electric capacity way, mends capacitance profile parameter altogether, and point benefit capacitance profile parameter; The upper limit of described maximum voltage span is set to the upper limit on voltage, and the lower limit of maximum voltage span is set to lower limit under voltage; The upper limit of described secondary voltage span is set to upper voltage limit, and the lower limit of secondary voltage span is set to lower voltage limit.
A2. by capacitance order from small to large, common benefit electric capacity is sorted.
A3. by capacitance order from small to large, point benefit electric capacity is sorted.
A4. according to mending electric capacity statistics altogether, common benefit capacitance rank is set, and determines each electric capacity quantity of mending altogether capacitance rank.
A5. according to a point benefit electric capacity statistics, arrange to divide and mend capacitance rank, and determine the electric capacity quantity of each point of benefit capacitance rank.
It should be noted that after the parameters of each idle compensating control setting changes and all need to carry out above-mentioned sequence and statistical work.
B. the electrical operation parameter of power distribution network is sampled, obtain sampling electrical operation parameter;
The electrical operation parameter of described power distribution network comprises three-phase voltage, three-phase current effective value, three phases active power, three phase reactive power, three-phase activity coefficient and three phase harmonic amplitude.
C. determine the electric capacity coming into operation and the electric capacity not coming into operation, the electric capacity coming into operation is carried out to timing statistics, determine the continuous operation timing of the electric capacity coming into operation and add up to work timing;
The preferred embodiment of the present invention, as shown in Figure 2, step C comprises as follows step by step,
C1. check that each electric capacity and each point mended altogether mend electric capacity whether put into operation Status Flag, i.e. timing index; For common benefit electric capacity and point benefit electric capacity of the Status Flag that do not put into operation, by their continuous operation timing zero clearing; For the common benefit electric capacity and point benefit electric capacity that have the Status Flag that puts into operation, execution step C2.
C2. each electric capacity of mending is altogether carried out as follows step by step,
For the common benefit electric capacity having come into operation, cumulative this mended altogether the continuous operation timing of electric capacity and added up to work timing; For the common benefit electric capacity also not coming into operation, maintain current continuous operation timing and add up to work timing;
C3. respectively point benefit electric capacity of each phase place is carried out as follows step by step by phase place,
For the electric capacity of point mending having come into operation, cumulative this point mended the timing of working of the continuous operation timing of electric capacity and accumulative total; For point benefit electric capacity also not coming into operation, maintain current continuous operation timing and add up to work timing.
The timing of working of described accumulative total will be saved in Flash or EEPROM.
D. the sampling electrical operation parameter of obtaining according to step B, determines capacitor switching scheme, and as shown in Figure 3, step D also can be called " voltage, idle, power factor " comprehensive deterministic process
If sampling electrical operation parameter all exceeds the span that idle compensating control arranges, excise immediately all electric capacity;
If between the upper limit of maximum voltage span and the upper limit of secondary voltage span that the sampled voltage in sampling electrical operation parameter arranges at idle compensating control, execution step E, excise step by step electric capacity, described excision is to make electric capacity out of service;
If in the secondary voltage span that the sampled voltage in sampling electrical operation parameter arranges at idle compensating control, and outside the power factor span that sampled power factor arranges at idle compensating control, the capacitance that the definite needs of lower limit of the power factor span arranging according to idle compensating control compensate, and the capacitance having compensated is determined the minimum value of building-out capacitor amount; If the minimum value of this building-out capacitor amount is less than the input capacitance that idle compensating control arranges, just excise all electric capacity, otherwise execution step F, the i.e. preferred excellent switching capacitance of cutting, when preferably excellent when cutting switching capacitance and being used on common benefit electric capacity, be exactly that Switching Strategy is mended in operation shown in Fig. 3 altogether; When the preferred excellent switching capacitance of cutting is used in that point to mend on electric capacity be to be exactly point benefit Switching Strategy of operation shown in Fig. 3.Point mending Switching Strategy, to mend together Switching Strategy basic identical, and just point mending Switching Strategy needs respectively to implement for point mending on electric capacity of respectively going up mutually in three-phase.
E. control and excise step by step electric capacity;
The preferred embodiment of the present invention, as shown in Figure 4, the process that electric capacity is excised in the control of step e step by step comprises as follows step by step,
If E1. the three-phase sampled voltage in sampling electrical operation parameter is all between the upper limit of maximum voltage span and the upper limit of secondary voltage span arranging at idle compensating control, execution step E2; If having a phase sampler voltage or two-phase sampled voltage in the three-phase sampled voltage in sampling electrical operation parameter is between the upper limit of maximum voltage span and the upper limit of secondary voltage span arranging at idle compensating control, execution step E3;
E2. select one group to mend altogether electric capacity excision;
If the common benefit electric capacity of selecting excises unsuccessfully, select respectively point benefit electric capacity excision of three-phase;
E3. for the each phase in sampled voltage place between the upper limit of maximum voltage span and the upper limit of secondary voltage span that arrange at idle compensating control, carry out as follows step by step respectively,
Select one point to mend electric capacity excision; If point benefit electric capacity excises unsuccessfully, just select one to mend altogether electric capacity excision.
F. adopt the preferably excellent switching capacitance of cutting;
The preferred embodiment of the present invention, as shown in Figure 5, mends capacitance rank and carries out following processing procedure each capacitance rank and each point mended altogether,
F1. the electric capacity in capacity levels is done to subtraction from big to small, should drop into electric capacity number CPS1 using the number of times that allows to subtract each other as this capacity levels, and determine the electric capacity of the input number CPS0 of this capacity levels;
If F2. CPS1 is greater than CPS0, in the electric capacity not putting into operation in described capacity levels, select CPS1-CPS0 electric capacity to put into operation;
If F3. CPS1 is less than CPS0, in the electric capacity having put into operation in described capacity levels, select CPS0-CPS1 electric capacity to excise.
The present invention uses step C to obtain the continuous operation timing of electric capacity and the timing that adds up to work realizes reasonable distribution electric capacity utilization rate, specifically in F2 step by step, while selecting CPS1-CPS0 electric capacity to put into operation in the electric capacity not putting into operation in capacity levels, select the work electric capacity of timing minimum of accumulative total to put into operation; In F3 step by step, while selecting CPS0-CPS1 electric capacity to excise in the electric capacity having put into operation, select the electric capacity excision of stream time maximum in capacity levels.
If send switching order by communication mode, after the F2 step by step of step F carries out, and F3 carries out as follows step by step after carrying out step by step,
F4. generate switching command code, and switching command code is backed up relatively, if variation detected, just send switching command code, to realize capacitor switching; And,
Comprise if switching command code is determined in the capacitor bank dropping into the electric capacity putting into operation, the electric capacity that this is putting into operation continues operation; If the electric capacity having put into operation is not in the capacitor bank of the definite input of switching command code, this electric capacity having put into operation is out of service.
For preventing that the electric capacity long-time running dropping into from causing breaking down, in whole method implementation, also carry out following steps simultaneously,
P1., continuous operating time threshold value is set;
Be not less than described continuous operating time threshold value if P2. monitor the continuous operation timing of the electric capacity that puts into operation, determine that this electric capacity that puts into operation is overrun electric capacity, in the electric capacity not putting into operation, select an accumulative total minimum electric capacity of timing of working to replace described overrun electric capacity.
The present invention is based on said method and also propose a kind of reactive power compensator for power distribution network configuration, comprise idle compensating control, and be electrically connected the electric parameter sampling module of this idle compensating control.The electric parameter that described sampling controller gathers according to electric parameter sampling module, completes the reactive power compensation to power distribution network by above-mentioned steps A to the preferred excellent reactive-load compensation method of cutting based on idle compensating control of step F.
Claims (10)
1. the preferred excellent reactive-load compensation method of cutting based on idle compensating control, is characterized in that, described method comprises the steps:
A. determine the capacity levels of mending altogether electric capacity according to the parameters of idle compensating control setting, each electric capacity quantity of mending altogether capacitance rank, point capacity levels of mending electric capacity, and the electric capacity quantity of each point of benefit capacitance rank;
B. the electrical operation parameter of power distribution network is sampled, obtain sampling electrical operation parameter;
C. determine the electric capacity coming into operation and the electric capacity not coming into operation, the electric capacity coming into operation is carried out to timing statistics, determine the continuous operation timing of the electric capacity coming into operation and add up to work timing;
D. the sampling electrical operation parameter of obtaining according to step B, determines capacitor switching scheme,
If sampling electrical operation parameter all exceeds the span that idle compensating control arranges, excise immediately all electric capacity;
If between the upper limit of maximum voltage span and the upper limit of secondary voltage span that the sampled voltage in sampling electrical operation parameter arranges at idle compensating control, execution step E;
If in the secondary voltage span that the sampled voltage in sampling electrical operation parameter arranges at idle compensating control, and outside the power factor span that sampled power factor arranges at idle compensating control, the capacitance that the definite needs of lower limit of the power factor span arranging according to idle compensating control compensate, and the capacitance having compensated is determined the minimum value of building-out capacitor amount; If the minimum value of this building-out capacitor amount is less than the input capacitance that idle compensating control arranges, just excise all electric capacity, otherwise execution step F;
E. control and excise step by step electric capacity;
F. adopt the preferably excellent switching capacitance of cutting;
Each capacitance rank and each point mended altogether mended capacitance rank and carried out following processing procedure,
F1. the electric capacity in capacity levels is done to subtraction from big to small, should drop into electric capacity number CPS1 using the number of times that allows to subtract each other as this capacity levels, and determine the electric capacity of the input number CPS0 of this capacity levels;
If F2. CPS1 is greater than CPS0, in the electric capacity not putting into operation in described capacity levels, select CPS1-CPS0 electric capacity to put into operation;
If F3. CPS1 is less than CPS0, in the electric capacity having put into operation in described capacity levels, select CPS0-CPS1 electric capacity to excise.
2. the preferred excellent reactive-load compensation method of cutting based on idle compensating control according to claim 1, is characterized in that:
After the F2 step by step of step F carries out, and F3 carries out as follows step by step after carrying out step by step,
F4. generate switching command code, and switching command code is backed up relatively, if variation detected, just send switching command code, to realize capacitor switching; And,
Comprise if switching command code is determined in the capacitor bank dropping into the electric capacity putting into operation, the electric capacity that this is putting into operation continues operation; If the electric capacity having put into operation is not in the capacitor bank of the definite input of switching command code, this electric capacity having put into operation is out of service.
3. according to the preferred excellent reactive-load compensation method of cutting based on idle compensating control described in claim 1 or 2, it is characterized in that:
In whole method implementation, also carry out following steps simultaneously,
P1., continuous operating time threshold value is set;
Be not less than described continuous operating time threshold value if P2. monitor the continuous operation timing of the electric capacity that puts into operation, determine that this electric capacity that puts into operation is overrun electric capacity, in the electric capacity not putting into operation, select an accumulative total minimum electric capacity of timing of working to replace described overrun electric capacity.
4. require the described preferred excellent reactive-load compensation method of cutting based on idle compensating control according to right 1, it is characterized in that:
In steps A, the parameters of idle compensating control setting comprises maximum voltage span, secondary voltage span, and harmonic limits scope, mends electric capacity way altogether, and point benefit electric capacity way, mends capacitance profile parameter altogether, and point benefit capacitance profile parameter;
The upper limit of described maximum voltage span is set to the upper limit on voltage, and the lower limit of maximum voltage span is set to lower limit under voltage; The upper limit of described secondary voltage span is set to upper voltage limit, and the lower limit of secondary voltage span is set to lower voltage limit.
5. the preferred excellent reactive-load compensation method of cutting based on idle compensating control according to claim 1, is characterized in that:
Described in step B, the electrical operation parameter of power distribution network comprises three-phase voltage, three-phase current effective value, three phases active power, three phase reactive power, three-phase activity coefficient and three phase harmonic amplitude.
6. the preferred excellent reactive-load compensation method of cutting based on idle compensating control according to claim 1, is characterized in that:
Described steps A comprises as follows step by step,
A1. determine and mend altogether capacitance and point benefit capacitance according to the parameters of idle compensating control setting;
A2. by capacitance order from small to large, common benefit electric capacity is sorted;
A3. by capacitance order from small to large, point benefit electric capacity is sorted;
A4. according to mending electric capacity statistics altogether, common benefit capacitance rank is set, and determines each electric capacity quantity of mending altogether capacitance rank;
A5. according to a point benefit electric capacity statistics, arrange to divide and mend capacitance rank, and determine the electric capacity quantity of each point of benefit capacitance rank.
7. the preferred excellent reactive-load compensation method of cutting based on idle compensating control according to claim 1, is characterized in that:
Described step C comprises as follows step by step,
C1. check that each electric capacity and each point mended altogether mend electric capacity whether put into operation Status Flag, i.e. timing index; For common benefit electric capacity and point benefit electric capacity of the Status Flag that do not put into operation, by their continuous operation timing zero clearing; For the common benefit electric capacity and point benefit electric capacity that have the Status Flag that puts into operation, execution step C2.
C2. each electric capacity of mending is altogether carried out as follows step by step,
For the common benefit electric capacity having come into operation, cumulative this mended altogether the continuous operation timing of electric capacity and added up to work timing; For the common benefit electric capacity also not coming into operation, maintain current continuous operation timing and add up to work timing;
C3. respectively point benefit electric capacity of each phase place is carried out as follows step by step by phase place,
For the electric capacity of point mending having come into operation, cumulative this point mended the timing of working of the continuous operation timing of electric capacity and accumulative total; For point benefit electric capacity also not coming into operation, maintain current continuous operation timing and add up to work timing.
8. the preferred excellent reactive-load compensation method of cutting based on idle compensating control according to claim 1, is characterized in that:
Described step e comprises as follows step by step,
If E1. the three-phase sampled voltage in sampling electrical operation parameter is all between the upper limit of maximum voltage span and the upper limit of secondary voltage span arranging at idle compensating control, execution step E2; If having a phase sampler voltage or two-phase sampled voltage in the three-phase sampled voltage in sampling electrical operation parameter is between the upper limit of maximum voltage span and the upper limit of secondary voltage span arranging at idle compensating control, execution step E3;
E2. select one group to mend altogether electric capacity excision;
If the common benefit electric capacity of selecting excises unsuccessfully, select respectively point benefit electric capacity excision of three-phase;
E3. for the each phase in sampled voltage place between the upper limit of maximum voltage span and the upper limit of secondary voltage span that arrange at idle compensating control, carry out as follows step by step respectively,
Select one point to mend electric capacity excision; If point benefit electric capacity excises unsuccessfully, just select one to mend altogether electric capacity excision.
9. the preferred excellent reactive-load compensation method of cutting based on idle compensating control according to claim 1, is characterized in that:
In F2 step by step, while selecting CPS1-CPS0 electric capacity to put into operation in the electric capacity not putting into operation in capacity levels, select the work electric capacity of timing minimum of accumulative total to put into operation;
In F3 step by step, while selecting CPS0-CPS1 electric capacity to excise in the electric capacity having put into operation, select the electric capacity excision of stream time maximum in capacity levels.
10. be a reactive power compensator for power distribution network configuration, it is characterized in that:
Comprise idle compensating control, and be electrically connected the electric parameter sampling module of this idle compensating control; The electric parameter that described sampling controller gathers according to electric parameter sampling module, completes the reactive power compensation to power distribution network by the preferred excellent reactive-load compensation method of cutting based on idle compensating control described in any one of claim 1 to 9.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460804A (en) * | 2014-12-11 | 2015-03-25 | 无锡市锡容电力电器有限公司 | Small current generating device and reactive compensation device debugging system comprising same |
| CN104578094A (en) * | 2014-12-22 | 2015-04-29 | 深圳市盛弘电气有限公司 | Capacitance switching method and device |
| CN104810834A (en) * | 2015-04-14 | 2015-07-29 | 国家电网公司 | Voltage-sensitivity-based multi-section 500 kV grid reactive compensation switching strategy optimizing method |
| CN105375491A (en) * | 2015-11-20 | 2016-03-02 | 中国西电电气股份有限公司 | Three-phase reactive power unbalance compensation method |
| CN106300381A (en) * | 2016-08-27 | 2017-01-04 | 宁波三星智能电气有限公司 | A kind of system of selection of reactive-load compensation capacitor |
| CN107591818A (en) * | 2017-08-11 | 2018-01-16 | 烟台海珐电气科技有限公司 | A kind of Arithmetic for Reactive Power Compensation for solving low-load and being mended without merits and demerits, owing complementarity problem |
| CN108206526A (en) * | 2018-01-22 | 2018-06-26 | 许继电源有限公司 | A kind of capacitor switching partition control method and device |
| CN111478337A (en) * | 2020-04-17 | 2020-07-31 | 许继集团有限公司 | Control method for capacitor switching |
| CN112290557A (en) * | 2020-10-12 | 2021-01-29 | 宁波大家小家网络科技有限公司 | Switching type reactive compensation control device and method based on digital link |
| CN113675858A (en) * | 2021-08-16 | 2021-11-19 | 广东德帝机电设备有限公司 | Reactive compensation control method and device, storage medium and equipment |
| CN113991695A (en) * | 2021-10-28 | 2022-01-28 | 广东电网有限责任公司 | Reactive compensation equipment switching method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134356A (en) * | 1990-06-22 | 1992-07-28 | Board Of Regents Of The University Of Washington | Reactive power compensator |
| US6462519B1 (en) * | 2001-06-05 | 2002-10-08 | Mcdaniel William D. | Automatic power factor correction system |
| CN101075744A (en) * | 2007-06-19 | 2007-11-21 | 保定学峰实业有限公司 | Method for optimizing and allocating capacitor of reactive compensator |
| CN101106277A (en) * | 2007-06-19 | 2008-01-16 | 保定学峰实业有限公司 | A powerless optimization compensation method for 10KV distribution network unit line |
-
2014
- 2014-06-19 CN CN201410274874.6A patent/CN104092221A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134356A (en) * | 1990-06-22 | 1992-07-28 | Board Of Regents Of The University Of Washington | Reactive power compensator |
| US6462519B1 (en) * | 2001-06-05 | 2002-10-08 | Mcdaniel William D. | Automatic power factor correction system |
| CN101075744A (en) * | 2007-06-19 | 2007-11-21 | 保定学峰实业有限公司 | Method for optimizing and allocating capacitor of reactive compensator |
| CN101106277A (en) * | 2007-06-19 | 2008-01-16 | 保定学峰实业有限公司 | A powerless optimization compensation method for 10KV distribution network unit line |
Non-Patent Citations (2)
| Title |
|---|
| 侯文清等: "基于DSP的电能质量检测与无功补偿综合测控装置", 《仪器仪表学报》 * |
| 李清慧等: "一种改进的模糊控制电容投切方法的研究", 《电测与仪表》 * |
Cited By (18)
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|---|---|---|---|---|
| CN104460804A (en) * | 2014-12-11 | 2015-03-25 | 无锡市锡容电力电器有限公司 | Small current generating device and reactive compensation device debugging system comprising same |
| CN104578094A (en) * | 2014-12-22 | 2015-04-29 | 深圳市盛弘电气有限公司 | Capacitance switching method and device |
| CN104578094B (en) * | 2014-12-22 | 2017-08-29 | 深圳市盛弘电气股份有限公司 | A kind of capacitor switching method and device |
| CN104810834A (en) * | 2015-04-14 | 2015-07-29 | 国家电网公司 | Voltage-sensitivity-based multi-section 500 kV grid reactive compensation switching strategy optimizing method |
| CN105375491B (en) * | 2015-11-20 | 2018-06-26 | 中国西电电气股份有限公司 | A kind of three phase reactive power imbalance compensation method |
| CN105375491A (en) * | 2015-11-20 | 2016-03-02 | 中国西电电气股份有限公司 | Three-phase reactive power unbalance compensation method |
| CN106300381A (en) * | 2016-08-27 | 2017-01-04 | 宁波三星智能电气有限公司 | A kind of system of selection of reactive-load compensation capacitor |
| CN107591818A (en) * | 2017-08-11 | 2018-01-16 | 烟台海珐电气科技有限公司 | A kind of Arithmetic for Reactive Power Compensation for solving low-load and being mended without merits and demerits, owing complementarity problem |
| CN107591818B (en) * | 2017-08-11 | 2020-06-26 | 烟台海珐电气科技有限公司 | Reactive compensation method for solving problems of low-load no-power over-compensation and under-compensation |
| CN108206526A (en) * | 2018-01-22 | 2018-06-26 | 许继电源有限公司 | A kind of capacitor switching partition control method and device |
| CN108206526B (en) * | 2018-01-22 | 2020-12-04 | 许继电源有限公司 | Capacitor switching partition control method and device |
| CN111478337A (en) * | 2020-04-17 | 2020-07-31 | 许继集团有限公司 | Control method for capacitor switching |
| CN112290557A (en) * | 2020-10-12 | 2021-01-29 | 宁波大家小家网络科技有限公司 | Switching type reactive compensation control device and method based on digital link |
| CN112290557B (en) * | 2020-10-12 | 2022-08-12 | 宁波大家小家网络科技有限公司 | Switching type reactive compensation control device and method based on digital link |
| CN113675858A (en) * | 2021-08-16 | 2021-11-19 | 广东德帝机电设备有限公司 | Reactive compensation control method and device, storage medium and equipment |
| CN113675858B (en) * | 2021-08-16 | 2023-09-15 | 广东德帝机电设备有限公司 | Reactive compensation control method, device, storage medium and equipment |
| CN113991695A (en) * | 2021-10-28 | 2022-01-28 | 广东电网有限责任公司 | Reactive compensation equipment switching method and device |
| CN113991695B (en) * | 2021-10-28 | 2024-04-30 | 广东电网有限责任公司 | Reactive power compensation equipment switching method and device |
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