CN108663567A - A kind of metering method of overpower factor requirement - Google Patents
A kind of metering method of overpower factor requirement Download PDFInfo
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- CN108663567A CN108663567A CN201810401752.7A CN201810401752A CN108663567A CN 108663567 A CN108663567 A CN 108663567A CN 201810401752 A CN201810401752 A CN 201810401752A CN 108663567 A CN108663567 A CN 108663567A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/007—Adapted for special tariff measuring
Abstract
A kind of metering method of overpower factor requirement, it is characterised in that：It includes the following steps：(1) parameter is default；(2) it obtains in the perceptual time interval of each section of appearance residing in a current calculating cycle and participates in the capacitive power factor PFset_Cap of the calibration calculated the or inductive factor PFset_Ind of calibration；(3) corresponding actual capacitive power factor PF_cap or actual inductive factors PF_ind is calculated；(4) judge whether actual content/emotional power factor is respectively less than the content/emotional power factor of calibration, if so, entering in next step, if it is not, then this is not counted in calculating；(5) calculation formula for calculating normal requirement the increment DMCR, DMCR in the power factor of calibration is as follows：The metering method of the overpower factor requirement combines active energy and quadergy and is detected to power factor (PF).
Description
Technical field
The present invention relates to ammeter field of measuring techniques, and in particular to a kind of metering method of overpower factor requirement.
Background technology
Existing demand metering method be calculate a period of time in " mean power of active energy " or " quadergy
Mean power ", will be active and idle separated, can not all-sidedly and accurately react the current requirement service condition of user, and do not have
Power factor (PF) is detected, specific tariff can not be carried out to the special requirement of power factor of the user beyond calibration.
Invention content
The technical problem to be solved by the present invention is to：There is provided a kind of active energy of synthesis and quadergy and to power because
The metering method for the overpower factor requirement that element is detected.
Technical solution of the invention is：A kind of metering method of overpower factor requirement, it is characterised in that：It includes
Following steps：
(1) pre-set hold perceptual time interval, the capacitive power factor PFset_Cap of calibration, calibration inductive
Factor PFset_Ind, calculating cycle INTDMCRAnd timing mode；
(2) it obtains in the perceptual time interval of each section of appearance residing in a current calculating cycle and participates in the calibration calculated
The capacitive power factor PFset_Cap or inductive factor PFset_Ind of calibration；
(3) according to the acquisition of step (2) as a result, calculating each section holds corresponding actual capacitive power in perceptual time interval
Factor PF_cap or actual inductive factors PF_ind；
(4) judge actual content/emotional power factor that each section is held in perceptual time interval whether be respectively less than the appearance of calibration/
Inductive factor, if so, entering in next step, if it is not, then this is not counted in calculating；
(5) normal requirement the increment DMCR, DMCR in the power factor that each section is held the calibration in perceptual time interval are calculated
Calculation formula it is as follows：
Wherein：PFset is the capacitive power factor PFset_Cap of calibration or the inductive factor PFset_Ind of calibration；
Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of inductive reactive power energy increment or capacitive reactive power energy increment held in perceptual time interval；
Each section in a current calculating cycle is held the DMCR in perceptual time interval to add up, obtains a meter
Calculate the DMCR in the period.
After the above method, the present invention has the following advantages：
The metering method of overpower factor requirement of the present invention is by detecting actual appearance, inductive factor, only in reality
In the case that the appearance on border, inductive factor are respectively less than the appearance demarcated, inductive factor, current calculation cycle internal standard is just calculated
Normal requirement increment in fixed power factor, the normal requirement in the power factor demarcated in each calculating cycle is constantly tired
Add, so that it may be converted to the special requirement of the power factor beyond calibration；That is once to it is actual hold, inductive because
Number is detected, so that it may be calculated the normal requirement increment DMCR in the power factor demarcated in each calculating cycle and to its into
Row, which calculates, to add up, it is hereby achieved that the special requirement of the corresponding power factor beyond calibration, thus can exceed portion to this
The special requirement divided carries out specific tariff；In addition active energy and quadergy also are considered simultaneously in the metering of requirement, from
And it can all-sidedly and accurately react the requirement service condition of user.
Preferably, in the step (2) each section of capacitive power for holding the calibration for participating in calculating in perceptual time interval because
The acquisition rule of number PFset_Cap or the inductive factor PFset_Ind of calibration are as follows：
If A, a current calculating cycle is completely in the interior or perceptual time interval of capacitive time interval, basis
The content/emotional characteristic of time interval taken in current entire calculating cycle calibration capacitive power factor PFset_Cap or
The inductive factor PFset_Ind of calibration；
If B, a current calculating cycle is completely in appearance perceptual incorporation time section, the capacitive work(of calibration is judged
Whether rate factor PFset_Cap is equal to the inductive factor PFset_Ind of calibration
B1:If so, more actual capacitive power factor PF_cap and actual inductive factor PF_ind, value
The power factor of calibration corresponding to smaller；
B2:If it is not, then the ratio PF_cap/PFset_Cap of more actual capacitive power factor and actual perceptual work(
The ratio PF_ind/PFset_Ind of rate factor, the power factor of the calibration corresponding to the big value of value；
Hold in perceptual incorporation time section if C, the half in a current calculating cycle is in, and the other half is in and holds
Property time interval in or perceptual time interval in, then judge whether the capacitive power factor PFset_Cap of calibration is equal to calibration
Inductive factor PFset_Ind
If so, according to corresponding to the B1 of regular B acquisitions in the half calculating cycle for holding perceptual incorporation time section
Calibration power factor, and the capacitive of calibration is then taken according to the content/emotional characteristic of time interval in the other half calculating cycle
The power factor PFset_Cap or inductive factor PFset_Ind of calibration；If it is not, then this is not counted in calculating；
If D, working as the half in previous calculating cycle to be located in perceptual time interval, the other half is located at capacitive time interval
Interior, perceptual time interval and capacitive time interval are end to end, then judge calibration capacitive power factor PFset_Cap whether etc.
In the inductive factor PFset_Ind of calibration
If so, the inductive factor PFset_Ind of calibration is taken in half calculating cycle in perceptual time interval,
The capacitive power factor PFset_Cap of calibration is taken in the other half calculating cycle in capacitive time interval；If it is not, then this is disregarded
Enter to calculate.
Arrangement above can be held in each section in a current calculating cycle in perceptual time interval, and reasonable standard can be obtained
The power factor and quadergy increment that true participation calculates, so that the power factor beyond calibration being finally calculated
Special requirement result of calculation it is more accurate.
Preferably, each section of actual capacitive power factor PF_cap held in perceptual time interval in the step (3)
Or the calculation formula of actual inductive factor PF_ind is as follows：
Wherein：Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of capacitive reactive power energy increment held in perceptual time interval；
Wherein：Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of inductive reactive power energy increment held in perceptual time interval.
The setting can accurately obtain actual capacitive power factor PF_cap or actual inductives factor PF_ind, and
Operation is relatively simple.
Preferably, the calculating cycle is set as 30min or 60min.The setting facilitates setting calculating cycle, and is convenient for
Operation.
Preferably, the timing mode includes least bit timing and integral point timing.The setting facilitates setting calculating cycle, and
Convenient for operation.
Description of the drawings：
Fig. 1 is the signal that each section residing for a calculating cycle current in the embodiment of the present invention 1 holds perceptual time interval
Figure；
Fig. 2 is the signal that each section residing for a calculating cycle current in the embodiment of the present invention 2 holds perceptual time interval
Figure；
Fig. 3 is the signal that each section residing for a calculating cycle current in the embodiment of the present invention 3 holds perceptual time interval
Figure；
Fig. 4 is the signal that each section residing for a calculating cycle current in the embodiment of the present invention 4 holds perceptual time interval
Figure；
Specific implementation mode
Below in conjunction with the accompanying drawings, and in conjunction with the embodiments the present invention is described further.
Embodiment 1：
A kind of metering method of overpower factor requirement, it includes the following steps：
(1) pre-set hold perceptual time interval, the capacitive power factor PFset_Cap of calibration, calibration inductive
Factor PFset_Ind, calculating cycle and timing mode；The capacitive power factor PFset_Cap of calibration and the perceptual work(of calibration
The value range of rate factor PFset_Ind is [0,1], is disposed as 0.92 both in the present embodiment, calculating cycle is set as
60min, if timing mode is least bit timing, such as 1:30~2:30, if timing mode is integral point timing, such as 1:00~
2:00；If calculating cycle is set as 30min, if timing mode is least bit timing, such as 1:30~2:00, if timing mould
Formula is integral point timing, such as 1:00~1:30；
(2) it obtains in the perceptual time interval of each section of appearance residing in a current calculating cycle and participates in the calibration calculated
The capacitive power factor PFset_Cap or inductive factor PFset_Ind of calibration；
In the present embodiment each section residing in a current calculating cycle hold perceptual time interval as shown in Figure 1, due to
Current entire calculating cycle is completely in capacitive time interval, i.e., only has one section of capacitive in current calculating cycle
Time interval, then PFset takes the capacitive power factor PFset_Cap of calibration in entire calculating cycle；
(3) according to the acquisition of step (2) as a result, calculating each section holds corresponding actual capacitive power in perceptual time interval
Factor PF_cap or actual inductive factors PF_ind；Due to step (2) get be calibration capacitive power factor
PFset_Cap, therefore calculate the actual capacitive power factor PF_cap in a current calculating cycle；
(4) judge actual content/emotional power factor that each section is held in perceptual time interval whether be respectively less than the appearance of calibration/
Inductive factor, if so, entering in next step, if it is not, then this is not counted in calculating；
Each section of actual capacitive power factor PF_cap held in perceptual time interval and actual inductive factor PF_
The calculation formula of ind is as follows：
Wherein：Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of capacitive reactive power energy increment held in perceptual time interval；
Wherein：Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of inductive reactive power energy increment held in perceptual time interval；
Capacitive time interval is in by entire calculating cycle in this present embodiment, therefore need to only judge a current meter
Calculate the capacitive power factor the PFset_Cap whether actual capacitive power factor PF_cap in the period is less than calibration；And deserve
Actual capacitive power factor in a preceding calculating cycleCalculation formula in：Kwh
For the active energy increment in a calculating cycle；Kvarh is the capacitive reactive power energy increment in a calculating cycle；Assume
The actual capacitive power factor PF_cap arrived is less than the capacitive power factor PFset_Cap of calibration, then enters in next step；
(5) normal requirement the increment DMCR, DMCR in the power factor that each section is held the calibration in perceptual time interval are calculated
Calculation formula it is as follows：
Wherein：PFset is the capacitive power factor PFset_Cap of calibration or the inductive factor PFset_Ind of calibration；
Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of inductive reactive power energy increment or capacitive reactive power energy increment held in perceptual time interval；
It will add up when each section in previous calculating cycle holds the DMCR in perceptual time interval, obtain a calculating
DMCR in period；
In the present embodiment, due to only having one section of capacitive time interval in a current calculating cycle, in basis
When above-mentioned formula calculates DMCR, entire calculating cycle PFset takes the capacitive power factor PFset_Cap of calibration；Kwh is a meter
Calculate the active energy increment in the period；Kvarh is the capacitive reactive power energy increment in a calculating cycle.
Embodiment 2：
Each section in the present embodiment residing for a current calculating cycle is held perceptual time interval as shown in Fig. 2, due to working as
A preceding calculating cycle is completely in the perceptual incorporation time of appearance, i.e., only there is one section to be held in current calculating cycle and feel
Property time interval, then need to judge whether the capacitive power factor PFset_Cap of calibration is equal to the inductive of calibration in step (2)
Factor PFset_Ind
B1:If so, more actual capacitive power factor PF_cap and actual inductive factor PF_ind, value
The power factor and quadergy increment of calibration corresponding to smaller, if PF_ind<PF_cap then takes the perceptual work(of calibration
Rate factor；
B2:If it is not, then the ratio PF_cap/PFset_Cap of more actual capacitive power factor and actual perceptual work(
The ratio PF_ind/PFset_Ind of rate factor, the power factor and quadergy increment of the calibration corresponding to the big value of value are false
Such as PF_cap/PFset_Cap>PF_ind/PFset_Ind then takes the capacitive power factor PFset_Cap of calibration；
Assume that obtained in step (2) is the inductive factor PFset_Ind of calibration in the present embodiment, then step (3)
Calculate the actual inductive factor PF_ind in a current calculating cycle, it is assumed that judge in step (4) current
Actual inductive factor PF_ind is less than the inductive factor PFset_Ind of calibration in one calculating cycle, then enters
Step (5) calculates DMCR,
Wherein：PFset is the inductive factor PFset_Ind of calibration；
Kwh is the active energy increment in a calculating cycle；
Kvarh is the inductive reactive power energy increment in a calculating cycle.
Embodiment 3：
Each section in the present embodiment residing for a current calculating cycle is held perceptual time interval as shown in figure 3, current
Half in one calculating cycle, which is in, to be held in perceptual incorporation time, the other half is in capacitive time interval, i.e., and current one
There are two sections to be held perceptual time interval in a calculating cycle, then need the capacitive power factor PFset_ for judging to demarcate in step (2)
Whether Cap is equal to the inductive factor PFset_Ind of calibration
If so, holding the power factor for obtaining corresponding calibration in perceptual incorporation time according to the B1 of embodiment 2, and
Then using the capacitive power factor PFset_Cap of calibration in the other half calculating cycle；If it is not, then this is not counted in calculating；
Assuming that obtained in the perceptual incorporation time of appearance in step (2) is the inductive factor PFset_Ind of calibration, and
The capacitive power factor PFset_Cap of calibration is then used in capacitive time interval, also correspondingly needs to obtain in such step (3)
Hold actual capacitive power in the actual inductive factor PF_ind and capacitive time interval in perceptual incorporation time because
Number PF_cap, it is assumed that judge that actual inductive factor PF_ind is less than mark in the perceptual incorporation time of appearance in step (4)
Fixed inductive factor PFset_Ind, and in capacitive time interval actual capacitive power factor PF_cap again smaller than mark
Fixed capacitive power factor PFset_Cap, therefore enter step (5) and calculate DMCR, by this present embodiment, current one is counted
Calculating in the period, there are two sections to be held perceptual time interval, then the calculating of DMCR is also divided into two parts, when respectively including holding perception mixing
In normal requirement increment DMCR1 and capacitive time interval in the power factor of the calibration of half interior of calculating cycle
The calculating of normal requirement increment DMCR2, the DMCR=DMCR1+DMCR2 of another half of calculating cycle, wherein DMCR1 and DMCR2 are public
Formula is as follows：
Wherein：PFset is the inductive factor PFset_Ind of calibration；
Kwh is the active energy increment for holding half of calculating cycle in perceptual incorporation time；
Kvarh is the inductive reactive power energy increment for holding half of calculating cycle in perceptual incorporation time；
Wherein：PFset is the capacitive power factor PFset_Cap of calibration；
Kwh is the active energy increment of another half of calculating cycle in capacitive time interval；
Kvarh is the capacitive reactive power energy increment of another half of calculating cycle in capacitive time interval.
Embodiment 4：
The perceptual time interval of appearance in the present embodiment residing for a current calculating cycle is as shown in figure 4, one currently
Half in calculating cycle is located in perceptual time interval, the other half is located in capacitive time interval, perceptual time interval and appearance
Property time interval it is end to end, i.e., there are two sections to be held perceptual time intervals in a current calculating cycle, then needed in step (2)
Judge whether the capacitive power factor PFset_Cap of calibration is equal to the inductive factor PFset_Ind of calibration
If so, the inductive factor PFset_Ind of calibration is taken in half calculating cycle in perceptual time interval,
The capacitive power factor PFset_Cap of calibration is taken in the other half calculating cycle in capacitive time interval；If it is not, then this is disregarded
Enter to calculate；
Actual inductive factor PF_ is obtained in half calculating cycle in step (3) in perceptual time interval
Ind, and actual capacitive power factor PF_cap is obtained in the other half calculating cycle in capacitive time interval, it is assumed that step
(4) judge in the half calculating cycle in perceptual time interval, actual inductive factor PF_ind is less than calibration
Inductive factor PFset_Ind, and in the other half calculating cycle in capacitive time interval, actual capacitive power because
Number PF_cap then enters step (5) and calculates DMCR, due to the present embodiment again smaller than the capacitive power factor PFset_Cap of calibration
In, there are two sections to be held perceptual time interval, then the calculating of DMCR is also divided into two parts, wraps respectively in a current calculating cycle
Include normal requirement increment DMCR1 in the power factor of the calibration in the half calculating cycle in perceptual time interval and
Normal requirement increment DMCR2, DMCR=DMCR1+DMCR2 in the other half calculating cycle in capacitive time interval, wherein
The calculation formula of DMCR1 and DMCR2 is as follows：
Wherein：PFset is the inductive factor PFset_Ind of calibration；
Kwh is the active energy increment in the half calculating cycle in perceptual time interval；
Kvarh is the inductive reactive power energy increment in the half calculating cycle in perceptual time interval；
Wherein：PFset is the capacitive power factor PFset_Cap of calibration；
Kwh is the active energy increment in the other half calculating cycle in capacitive time interval；
Kvarh is the capacitive reactive power energy increment in the other half calculating cycle in capacitive time interval.
Claims (5)
1. a kind of metering method of overpower factor requirement, it is characterised in that：It includes the following steps：
(1) pre-set hold perceptual time interval, the capacitive power factor PFset_Cap of calibration, calibration inductive factor
PFset_Ind, calculating cycle INTDMCRAnd timing mode；
(2) it obtains residing in a current calculating cycle each section and holds the capacitive for participating in the calibration calculated in perceptual time interval
The power factor PFset_Cap or inductive factor PFset_Ind of calibration；
(3) according to the acquisition of step (2) as a result, calculating each section holds corresponding actual capacitive power factor in perceptual time interval
PF_cap or actual inductive factors PF_ind；
(4) judge whether the actual content/emotional power factor that each section is held in perceptual time interval is respectively less than the content/emotional of calibration
Power factor, if so, entering in next step, if it is not, then this is not counted in calculating；
(5) meter of normal requirement the increment DMCR, DMCR in the power factor that each section is held the calibration in perceptual time interval are calculated
It is as follows to calculate formula：
Wherein：PFset is the capacitive power factor PFset_Cap of calibration or the inductive factor PFset_Ind of calibration；
Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of inductive reactive power energy increment or capacitive reactive power energy increment held in perceptual time interval；
Each section in a current calculating cycle is held the DMCR in perceptual time interval to add up, one is obtained and calculates week
DMCR in phase.
2. a kind of metering method of overpower factor requirement according to claim 1, it is characterised in that：The step (2)
In each section of capacitive power factor PFset_Cap for holding the calibration for participating in calculating in perceptual time interval or the inductive of calibration because
The acquisition rule of number PFset_Ind is as follows：
If A, a current calculating cycle is completely in the interior or perceptual time interval of capacitive time interval, according to the time
The content/emotional characteristic in section takes capacitive power factor PFset_Cap or the calibration of calibration in current entire calculating cycle
Inductive factor PFset_Ind；
If B, a current calculating cycle is completely in appearance perceptual incorporation time section, judge the capacitive power of calibration because
Whether number PFset_Cap is equal to the inductive factor PFset_Ind of calibration
B1:If so, more actual capacitive power factor PF_cap and actual inductive factor PF_ind, value are smaller
The power factor of calibration corresponding to person；
B2:If it is not, then the ratio PF_cap/PFset_Cap of more actual capacitive power factor and actual inductive because
Several ratio PF_ind/PFset_Ind, the power factor of the calibration corresponding to the big value of value；
If C, the half in a current calculating cycle is in and holds in perceptual incorporation time section, and when the other half is in capacitive
Between in section or in perceptual time interval, then judge whether the capacitive power factor PFset_Cap of calibration is equal to the perception of calibration
Power factor PFset_Ind
If so, corresponding mark is obtained according to the B1 of regular B in the half calculating cycle for holding perceptual incorporation time section
Fixed power factor, and the capacitive power of calibration is then taken according to the content/emotional characteristic of time interval in the other half calculating cycle
The factor PFset_Cap or inductive factor PFset_Ind of calibration；If it is not, then this is not counted in calculating；
If D, working as the half in previous calculating cycle to be located in perceptual time interval, the other half is located in capacitive time interval,
Perceptual time interval and capacitive time interval are end to end, then judge whether the capacitive power factor PFset_Cap of calibration is equal to
The inductive factor PFset_Ind of calibration
If so, taking the inductive factor PFset_Ind of calibration, capacitive in half calculating cycle in perceptual time interval
The capacitive power factor PFset_Cap of calibration is taken in the other half calculating cycle in time interval；If it is not, then this is not counted in meter
It calculates.
3. a kind of metering method of overpower factor requirement according to claim 1, it is characterised in that：The step (3)
In each section hold the actual capacitive power factor PF_cap or actual inductive factors PF_ind's in perceptual time interval
Calculation formula is as follows：
Wherein：Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of capacitive reactive power energy increment held in perceptual time interval；
Wherein：Kwh is one section of active energy increment held in perceptual time interval；
Kvarh is one section of inductive reactive power energy increment held in perceptual time interval.
4. a kind of metering method of overpower factor requirement according to claim 1, it is characterised in that：The calculating cycle
It is set as 30min or 60min.
5. a kind of metering method of overpower factor requirement according to claim 4, it is characterised in that：The timing mode
Including least bit timing and integral point timing.
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| CN108765747A (en) * | 2018-04-28 | 2018-11-06 | 宁波三星医疗电气股份有限公司 | A kind of metering method of overpower factor electricity |
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