CN109459608A - Power factor compensation device working condition inspection method - Google Patents
Power factor compensation device working condition inspection method Download PDFInfo
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- CN109459608A CN109459608A CN201811338680.2A CN201811338680A CN109459608A CN 109459608 A CN109459608 A CN 109459608A CN 201811338680 A CN201811338680 A CN 201811338680A CN 109459608 A CN109459608 A CN 109459608A
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- Prior art keywords
- power factor
- period
- compensation device
- factor compensation
- working condition
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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
- G01R21/006—Measuring power factor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
Abstract
The present invention relates to a kind of power factor compensation device working condition inspection methods.Obtain power factor n of the stoichiometric point for being equipped with power factor compensation device when power factor compensation device works normally0, include the following steps: step a, obtain the stoichiometric point in the active energy and capacity of idle power of period Δ T；Step b, stoichiometric point is calculated in the power factor of period Δ T according to following formula:Wherein, WPFor the active energy of period Δ T, WQFor the capacity of idle power of period Δ T, ntFor the active energy and the resulting power factor of capacity of idle power calculating according to period Δ T stoichiometric point；Step c, by ntWith n0It is compared to judge whether the working condition of power factor compensation device is normal.The present invention can accurately judge that power factor compensation device in the working condition of the period, helps rapidly to make reasonable measure, can quick processing power factor compensation device defect, to guarantee that the power factor of stoichiometric point meets relevant regulations.
Description
Technical field
The present invention relates to a kind of power factor compensation device working condition inspection methods.
Background technique
The height of electricity consumer power factor to hair, confession, the making full use of of electrical equipment, save electric energy and improve quality of voltage
It has an important influence.China, which has been specially formulated, thus implements the reduction of income to electricity consumer according to power factor or increases income electricity charge measure
" power factor adjustment charge method ".For executing the electricity consumer of 0.90 power factor standard value, by the way that " power rate adjusts the electricity charge
Increase and decrease lookup table " it is found that when the power factor of the electricity consumer is lower than 0.90 the electricity charge can be increased income.Power factor is lower, increases income
The ratio of the electricity charge is higher, for example, the power factor of the electricity consumer month is 0.47, then the electricity charge that the of that month electricity consumer is increased income are
The 51% of total electricity bill.
It is allowed to meet the method to adjust its power factor for this purpose, electricity consumer generally will be installed power factor compensation device
Regulation.But decline power factor when power factor compensation device damage or other reasons cause its working condition abnormal
When, electricity consumer need to undertake the electricity charge of great number.
There are two the main means of existing power factor compensation device working condition detection.Method one, on-the-spot test function
Whether rate factor compensation device correlation component works normally；Method two, range estimation are mounted on above power factor compensation device
Power factor value indicating meter.
The shortcomings that the shortcomings that method one is that detection efficiency is low, method two is, due to being mounted on power factor compensation device
The power factor indicated value in face is calculated according to active power and reactive power, be some time point instantaneous power because
Number, cannot reflect power factor compensation device in the working condition of some period.
Only the electricity power factor of some period just can be with accurate judgement power factor compensation device in the period
Working condition.
Summary of the invention
The purpose of the present invention is to provide a kind of power factor compensation device working condition inspection methods.
Above-mentioned purpose is to be implemented by following technical solution.
A kind of power factor compensation device working condition inspection method obtains the metering for being equipped with power factor compensation device
Power factor n of point when power factor compensation device works normally0, include the following steps:
Step a, the stoichiometric point is obtained in the active energy and capacity of idle power of period Δ T；
Step b, stoichiometric point is calculated in the power factor of period Δ T according to following formula:
Wherein, WPFor the active energy of period Δ T, WQFor the capacity of idle power of period Δ T, ntWhen for according to this
Between section Δ T stoichiometric point active energy and capacity of idle power calculate resulting power factor；
Step c, by ntWith n0It is compared to judge whether the working condition of power factor compensation device is normal.
The present invention calculates the stoichiometric point by using the active energy and capacity of idle power of some period of stoichiometric point
The mode of power factor can obtain the more accurate stoichiometric point in the power factor of period Δ T, accurately to judge function
Rate factor compensation device helps rapidly to make reasonable measure in the working condition of the period, can quick processing power
The defect of factor compensation device, to guarantee that the power factor of stoichiometric point meets relevant regulations.
Detailed description of the invention
Fig. 1 shows structural schematic diagram of the invention.
Drawing reference numeral:
10 data acquisition modules, 101 check device communication modules；
20 computing modules；
The communication module of 30 electricity data metering devices, 301 electricity data metering devices；
The communication module of 40 electric quantity data acquisition devices, 401 electric quantity data acquisition devices；
50 judgment modules；
60 control modules；
70 notification modules；
80 data memory modules；
90 display modules；
100 current power factor compensation devices；
200 stand-by power factor compensation devices；
300 power factor compensation device working condition check devices.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Embodiment one:
A kind of power factor compensation device working condition inspection method obtains the metering for being equipped with power factor compensation device
Power factor n of point when power factor compensation device works normally0, in the present embodiment, the normal work of power factor compensation device
Power factor n when making0Can complete to install and measure after being successfully tested in the power factor compensation device it is resulting, including such as
Lower step:
Step a, the stoichiometric point is obtained in the active energy and capacity of idle power of period Δ T；
Step b, stoichiometric point is calculated in the power factor of period Δ T according to following formula:
Wherein, WPFor the active energy of period Δ T, WQFor the capacity of idle power of period Δ T, ntWhen for according to this
Between section Δ T stoichiometric point active energy and capacity of idle power calculate resulting power factor；
Step c, by ntWith n0It is compared to judge whether the working condition of power factor compensation device is normal.
In the present embodiment, work as nt< n0When, the working condition of power factor compensation device is judged as abnormal；Work as nt≥n0When,
The working condition of power factor compensation device is judged as normal.
Specifically, for example, power factor compensation device measuring point after it completes to install and be successfully tested is resulting
Power factor n0=0.97, when according to the resulting n of above-mentioned steps calculatingtWhen < 0.97, the working condition of power factor compensation device
It is abnormal；When according to the resulting n of above-mentioned steps calculatingtWhen >=0.97, the working condition of power factor compensation device is normal.
The technical solution calculates the metering by using the active energy and capacity of idle power of some period of stoichiometric point
The mode of the power factor of point can obtain the more accurate stoichiometric point in the power factor of period Δ T, accurately to sentence
Disconnected working condition of the power factor compensation device in the period, helps rapidly to make reasonable measure, can quickly handle
The defect of power factor compensation device, to guarantee that the power factor of stoichiometric point meets relevant regulations.
In step a, the method for the active energy and capacity of idle power that obtain one period of stoichiometric point Δ T includes:
Obtain the active energy row degree and capacity of idle power row degree of the start time of period Δ T；
Obtain the active energy row degree and capacity of idle power row degree of the end of time of period Δ T；
The active energy and capacity of idle power of the period are calculated according to following formula:
Wp=Wp2-Wp1②
WQ=WQ2-WQ1③
Wherein, WPFor the active energy of period Δ T, WP1For the active energy row of the start time of period Δ T
Degree, WP2For the active energy row degree of the end of time of period Δ T, WQFor the capacity of idle power of period Δ T, WQ1When for this
Between section Δ T start time capacity of idle power row degree, WQ2For the capacity of idle power row degree of the end of time of period Δ T.
In the present embodiment, the active energy row degree of the start time of period Δ T can be that period Δ T's rises
Point moment is installed on the active energy of metering device (such as the electric energy meter or electricity load management terminal) display of stoichiometric point
Numerical value；
The capacity of idle power row degree of the start time of period Δ T can be that the period start time of Δ T is installed on
The numerical value of the capacity of idle power of metering device (such as the electric energy meter or electricity load management terminal) display of stoichiometric point；
The active energy row degree of the end of time of period Δ T can be that the period end of time of Δ T is installed on
The numerical value of the active energy of metering device (such as the electric energy meter or electricity load management terminal) display of stoichiometric point；
The capacity of idle power row degree of the end of time of period Δ T can be that the period end of time of Δ T is installed on
The numerical value of the capacity of idle power of metering device (such as the electric energy meter or electricity load management terminal) display of stoichiometric point.
The technical solution can simplify the calculating of the active energy and capacity of idle power of period Δ T.
In step a, period Δ T is less than 30 days.In the present embodiment, period Δ T can for half a day, one day,
Three days or one week.Since the metering period of power supply company is generally 1 month, setting period Δ T can guarantee less than 30 days
Power factor compensation device is checked in metering period, is suitably arranged in order to find the problem and make in metering period
It applies, undertakes the risk that the electricity charge increase income to reduce electricity consumer.
Cycle T is set, step a is repeatedly carried out to step c with cycle T.In the present embodiment, cycle T can be 1 to 30
It, such as cycle T is 1 day, 5 days, 10 days or 20 days etc..The technical solution, which can be improved, examines power factor compensation device
The reliability looked into reduces electricity consumer and undertakes the risk that the electricity charge increase income.
In step a, the active energy row degree of the start time of acquired period Δ T, period Δ T are risen
Capacity of idle power row degree, the active energy row degree of the end of time of period Δ T and the terminal of period Δ T of point moment
The capacity of idle power row degree at moment is from the electric energy meter or electricity load management terminal being installed at stoichiometric point.The technical solution can
Convenient for obtaining the capacity of idle power row of the active energy row degree of start time of period Δ T, the start time of period Δ T
The capacity of idle power row of the end of time of the active energy row degree and period Δ T of the end of time of degree, period Δ T
Degree, convenient for the implementation of inspection method.
Such as:
Active energy row degree W when 10 days 0 October in 2018 of the electric energy meter metering of certain electricity consumer obtainedP1=102.15,
Capacity of idle power row degree WQ1=23.69.
Active energy row degree W when the above-mentioned electricity consumer electric energy meter obtained measures 15 days 0 October in 2018P2=133.93, nothing
Function electricity row degree WQ2=30.83.
Wherein, WPFor the active energy of period Δ T, WP1For the active energy row of the start time of period Δ T
Degree, WP2For the active energy row degree of the end of time of period Δ T, WQFor the capacity of idle power of period Δ T, WQ1When for this
Between section Δ T start time capacity of idle power row degree, WQ2For the capacity of idle power row degree of the end of time of period Δ T.
Wherein, period Δ T is on October 15,00 to 2018 year on the 10th October in 2018.
According to the active energy of 2. period Δ T that calculation formula calculates are as follows: WP=WP2-WP1=133.93-102.15
=31.78 (Kw.h)；
According to the capacity of idle power of 3. period Δ T that calculation formula calculates are as follows: WQ=WQ2-WQ1=30.83-23.69=
7.14(Kvar.h)；
According to the power factor of 1. period Δ T that calculation formula calculates are as follows: nt=0.9757；
If with the electricity consumer power factor compensation device its complete to install and measure after being successfully tested resulting power because
Number n0For=0.97, above-mentioned calculated result explanation, when 10 days 0 October in 2018 was up to 15 days 0 October in 2018 this when
Between section, the power factor compensation device working condition of the electricity consumer is normal.
In step c, the power factor compensation device that is judged is current power factor compensation device；
Work as nt< n0When, the stand-by power factor compensation device being installed at stoichiometric point is opened, current power factor is closed and mends
Repay device.The technical solution
By in same electricity consumer (i.e. stoichiometric point) in addition to currently used current power factor compensation device is installed,
One stand-by power factor compensation device that can be helped out also extraly is installed, and the stand-by power factor compensation device is flat
When current power factor compensation device work normally when be in shutdown status, when inspection method through this embodiment checks
When the working condition exception of current power factor compensation device, the stand-by power factor compensation device is allowed to immediately turn on work.Its
The degree of automation can be improved, electricity consumer can be further decreased and undertake the risk that the electricity charge increase income, or even the risk is reduced to zero.
Although the working condition of current power factor compensation device whether normal checking process can be executes automatically, but checks knot
Fruit needs to inform staff, can just have subsequent maintenance to follow up, on the one hand, this electricity can be reduced if maintenance time is too long
Take the power factor in metering period, electricity consumer is caused to undertake the electricity charge of great number；On the other hand, staff really knows the inspection
Come to an end time of fruit not can determine that, if inspection structure does not notify in place, or is notified of not notice and have forgotten, can all extend reality
Thus the maintenance time on border can also reduce the power factor in this electricity charge metering period, electricity consumer is caused to undertake the electricity of great number
Take.
In the present embodiment, the structure of stand-by power factor compensation device and current power factor compensation device be it is identical,
It is normal to be identical to current power factor compensation device for the power factor of stoichiometric point when stand-by power factor compensation device works normally
The power factor of stoichiometric point when work.
In step c, work as nt< n0When, issue power factor compensation device working condition exception notice, thus in order to
Timely maintenance measures are made to power factor compensation device.
Embodiment two:
A kind of power factor compensation device working condition check device 300 as shown in Figure 1, comprising:
For obtaining stoichiometric point in the data acquisition module 10 of the electricity data of period Δ T；
For calculating the calculating of the power factor of the stoichiometric point according to electricity data acquired in data acquisition module 10
Module 20.
The calculating of power factor can be realized by setting data acquisition module and computing module for the technical solution, pass through institute
The power factor of calculating knows whether power factor compensation device working condition normal, and structure is simple, check it is convenient and efficient,
Inspection efficiency can be improved.
In addition, the technical solution calculates this by using the active energy and capacity of idle power of some period of stoichiometric point
The mode of the power factor of stoichiometric point can obtain the more accurate stoichiometric point in the power factor of period Δ T, with accurate
Ground judges power factor compensation device in the working condition of the period, helps rapidly to make reasonable measure, can be quick
The defect of processing power factor compensation device, to guarantee that the power factor of stoichiometric point meets relevant regulations.
In the present embodiment, data acquisition module can be used for executing the step a in embodiment one；Computing module can be used for executing
Step b in embodiment one；When the electricity data of the period Δ T of stoichiometric point acquired in the data acquisition module includes this
Between section Δ T active energy and capacity of idle power, and 1. power factor is calculated by the calculation formula in embodiment one；Alternatively, number
Electricity data according to the period Δ T for obtaining stoichiometric point acquired in module includes having for the start time of period Δ T
The active energy row degree and capacity of idle power row degree of the end of time of function electricity row degree and capacity of idle power row degree, period Δ T, and
The active energy and capacity of idle power of period Δ T 2. and are 3. calculated by the calculation formula in embodiment one, then pass through implementation
1. calculation formula in example one calculates power factor.
The data acquisition module 10 has can be with the electricity data metering device 30 or electricity data that are installed on stoichiometric point
Acquisition device 40 establishes the check device communication module 101 of communication connection.The technical solution can be convenient for acquisition electricity data.This reality
Apply in example, the communication module 401 of the communication module 301 of electricity data metering device and electric quantity data acquisition device can respectively with inspection
It looks into device communication module 101 and establishes communication connection.
In the present embodiment, the check device communication module and electricity data metering device or electricity of the data acquisition module
Data acquisition device establishes communication connection, the electricity recorded in order to electricity data metering device or electric quantity data acquisition device
Data are sent to data acquisition module.
The electricity data metering device 30 includes electric energy meter, which includes that the management of power load is whole
End.In the present embodiment, which is the Multifunctional electronic electric energy meter with data storage function, multi-functional
Electronic electric energy meter has the function of periodically recording electricity data.The electricity load management terminal, which has, obtains electric energy meter
Data are measured with to electric energy meter electricity, requirement, voltage, electric current, power, the electricity datas such as power factor, rate of qualified voltage it is automatic
The function of acquisition, storage, teletransmission.
The check device communication module 101 is wireless communication module, the electricity data metering device and electric quantity data acquisition
Device is respectively equipped with the wireless communication module that wireless communication connection can be established with check device communication module, that is to say, that the electricity
The communication module 401 of the communication module 301 and electric quantity data acquisition device of measuring data metering device includes wireless communication module.
For example, the check device communication module, the wireless communication module of electricity data metering device and electric quantity data acquisition device
Wireless communication module is Infrared Wireless Communication module.Certainly, the check device communication module, the nothing of electricity data metering device
Its in addition to Infrared Wireless Communication module also can be used in the wireless communication module of line communication module and electric quantity data acquisition device
Its wireless communication module, such as Bluetooth wireless communication module, GPRS, 4G wireless communication module or other long range wireless communications
Module.
Certainly, which can also be wire communication module, such as the check device communication module is 485
Communication module, the electricity data metering device and electric quantity data acquisition device, which are respectively equipped with, to be established with check device communication module
485 communication modules of communication connection, that is to say, that the communication module 301 and electric quantity data acquisition of the electricity data metering device
The communication module 401 of device includes 485 communication modules.
The power factor compensation device working condition check device further include according to the power calculated of computing module 20 because
Count the whether normal judgment module 50 of working condition to judge power factor compensation device.
In the present embodiment, judgment module can be used for executing the step c in embodiment one.
The power factor compensation device working condition check device further includes for working as nt< n0Shi Kaiqi is installed on stoichiometric point
The stand-by power factor compensation device at place and the control module 60 for closing current power factor compensation device.
The current power factor compensation device 100 may include for control current power factor compensation device 100 open or
The first electric-controlled switch (not shown) that person closes, which may include for controlling standby
The second electric-controlled switch (not shown) that power factor compensation device 200 turns on or off.The control module can Xiang Shangshu
First electric-controlled switch and the second electric-controlled switch wireless transmission control instruction are to control first electric-controlled switch and the second electric-controlled switch
Movement.
The power factor compensation device working condition check device further includes for working as nt< n0When issue power factor compensation
The notification module 70 of the notice of working state of device exception.In the present embodiment, notification module can be alarm module or can be with work
The mobile terminal for making personnel establishes the information sending module of communication connection.
The power factor compensation device working condition check device further includes data memory module 80 and display module 90.
Data memory module 80 stores the electricity data got and calculates resulting power factor, and display module 90 is shown
It can show electricity data and calculate resulting power factor, can also show the judging result in embodiment one in step c.
The power factor compensation device working condition check device is handheld terminal or computer administration center.
In the present embodiment, when power factor compensation device working condition check device is handheld terminal, the hand-held
Terminal can be Handheld meter reading machine.
Handheld terminal can in order to check operation, computer administration center can in order to data collection analysis, and from
Dynamicization checks.
Some period electricity data that the present invention is measured by electric energy meter calculates the period electricity power factor, can be quasi-
Really judge power factor compensation device in the working condition of the period.
Embodiment three:
A kind of power factor compensation device working condition as shown in Figure 1 checks system, the electricity including being installed on stoichiometric point
Measure data metering device and/or electric quantity data acquisition device；
It further include power factor compensation device (the i.e. dress of current power factor compensation shown in Fig. 1 for being installed on stoichiometric point
100) and power factor compensation device working condition check device 300 it sets；
Wherein, which is power factor compensation device described in implementation two
Working condition check device, the specific structure of the power factor compensation device working condition check device referring to embodiment two, this
It is secondary to repeat no more；
The data acquisition module of the power factor compensation device working condition check device can be with electricity data metering device
Or electric quantity data acquisition device establishes communication connection, so that the data of the power factor compensation device working condition check device
It obtains module and the stoichiometric point is obtained in the electricity of period Δ T by electricity data metering device or electric quantity data acquisition device
Data.Know whether power factor compensation device working condition is normal by power factor calculated.
In the present embodiment, which checks that system further includes reactive load.The present embodiment
In, stoichiometric point can be electricity consumer.
Claims (7)
1. a kind of power factor compensation device working condition inspection method obtains the stoichiometric point for being equipped with power factor compensation device
Power factor n when power factor compensation device works normally0, which comprises the steps of:
Step a, the stoichiometric point is obtained in the active energy and capacity of idle power of period Δ T；
Step b, stoichiometric point is calculated in the power factor of period Δ T according to following formula:
Wherein, WPFor the active energy of period Δ T, WQFor the capacity of idle power of period Δ T, ntFor according to the period
The active energy and capacity of idle power of Δ T stoichiometric point calculate resulting power factor；
Step c, by ntWith n0It is compared to judge whether the working condition of power factor compensation device is normal.
2. power factor compensation device working condition inspection method according to claim 1, which is characterized in that in step a
In, the method for the active energy and capacity of idle power that obtain one period of stoichiometric point Δ T includes:
Obtain the active energy row degree and capacity of idle power row degree of the start time of period Δ T；
Obtain the active energy row degree and capacity of idle power row degree of the end of time of period Δ T；
The active energy and capacity of idle power of the period are calculated according to following formula:
Wp=Wp2-Wp1
WQ=WQ2-WQ1
Wherein, WPFor the active energy of period Δ T, WP1For the active energy row degree of the start time of period Δ T, WP2
For the active energy row degree of the end of time of period Δ T, WQFor the capacity of idle power of period Δ T, WQ1For the period
The capacity of idle power row degree of the start time of Δ T, WQ2For the capacity of idle power row degree of the end of time of period Δ T.
3. power factor compensation device working condition inspection method according to claim 1, which is characterized in that in step a
In, period Δ T is less than 30 days.
4. power factor compensation device working condition inspection method according to claim 3, which is characterized in that the setting period
Step a is repeatedly carried out to step c with cycle T in T.
5. power factor compensation device working condition inspection method according to claim 2, which is characterized in that in step a
In, the idle electricity of the active energy row degree of the start time of acquired period Δ T, the start time of period Δ T
Measure the capacity of idle power of the active energy row degree of the end of time of row degree, period Δ T and the end of time of period Δ T
Row degree is from the electric energy meter or electricity load management terminal being installed at stoichiometric point.
6. power factor compensation device working condition inspection method according to claim 1, which is characterized in that in step c
In, the power factor compensation device that is judged is current power factor compensation device；
Work as nt< n0When, the stand-by power factor compensation device being installed at stoichiometric point is opened, current power factor compensation dress is closed
It sets.
7. according to claim 1 to power factor compensation device working condition inspection method described in any one of 6 claims,
It is characterized in that, working as n in step ct< n0When, issue the notice of power factor compensation device working condition exception.
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Cited By (1)
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| CN113410911A (en) * | 2021-08-02 | 2021-09-17 | 广东电网有限责任公司中山供电局 | Working state monitoring method and system of power factor compensation device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656612A (en) * | 2014-12-29 | 2015-05-27 | 四川双众科技有限公司 | Running status remote detection system for reactive compensation device |
-
2018
- 2018-11-12 CN CN201811338680.2A patent/CN109459608A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656612A (en) * | 2014-12-29 | 2015-05-27 | 四川双众科技有限公司 | Running status remote detection system for reactive compensation device |
Non-Patent Citations (1)
| Title |
|---|
| 钱卫钧等: "《工业企业供配电》", 31 May 2015 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410911A (en) * | 2021-08-02 | 2021-09-17 | 广东电网有限责任公司中山供电局 | Working state monitoring method and system of power factor compensation device |
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Application publication date: 20190312 |