CN109510191A - Power grid quality evaluation method and device - Google Patents
Power grid quality evaluation method and device Download PDFInfo
- Publication number
- CN109510191A CN109510191A CN201811353767.7A CN201811353767A CN109510191A CN 109510191 A CN109510191 A CN 109510191A CN 201811353767 A CN201811353767 A CN 201811353767A CN 109510191 A CN109510191 A CN 109510191A
- Authority
- CN
- China
- Prior art keywords
- power grid
- value
- evaluation point
- grid quality
- deviation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013441 quality evaluation Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000011156 evaluation Methods 0.000 claims abstract description 163
- 238000004364 calculation method Methods 0.000 claims abstract description 29
- 238000004891 communication Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 7
- 239000000470 constituent Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a power grid quality evaluation method and a device, wherein the evaluation method comprises the following steps: acquiring power supply parameters at two ends of a load in a power grid; calculating at least one power supply parameter deviation value according to the power supply parameters; respectively calculating evaluation scores according to the deviation values of the power supply parameters; and performing weighted calculation on all the evaluation scores to obtain a power grid quality evaluation score. According to the embodiment of the invention, the power supply parameters at two ends of the load in the power grid are obtained, the corresponding power supply parameter deviation value is obtained through calculation according to the power supply parameters, the evaluation score of each power supply parameter deviation value is calculated, and each evaluation score is calculated according to the weighted value to obtain the power grid quality evaluation score, so that the power supply instruction of the power grid is evaluated, objective parameters are provided for a user to prompt, and the problem of the load caused by poor power supply condition of the power grid is avoided.
Description
Technical field
The present invention relates to supply network technical field more particularly to a kind of power grid quality evaluation method and devices.
Background technique
The power transformation of the various voltages entirety that electric line forms in one's power, referred to as power network in electric system.It includes to become
Electricity, three transmission of electricity, distribution units, the task of power network are conveying and distribution electric energy, change voltage, household electric is usually to exchange
Electricity, single-phase.The environment difference of various countries causes daily life utilization voltage different, and China is mainly 220V, the alternating current of 50HZ.
Due to providing 220V, the alternating current of 50HZ, so matched electrical equipment in the supply network in China
Voltage rating be also 220V, but supply network is due to a variety of causes such as region, electricity consumption amount, the power grid of different home resident
Supply voltage can be in fluctuation status, for example, it sometimes appear that the brightness of lamps and lanterns is increased or dimmed suddenly, this is because power supply
Caused by voltage in network increases or reduces, and most users in house power grid quality or equipment safety degree do not have
Have stronger understanding or not clear enough, and the domestic loads under voltage rating are easy because the fluctuation of power supply power supply damages or
Cause bigger security risk.
Summary of the invention
Of the existing technology in order to solve the problems, such as, at least one embodiment of the present invention provides a kind of power grid quality and comments
Valence method and device.
In a first aspect, the embodiment of the invention provides a kind of power grid quality evaluation method, the evaluation method includes:
Obtain the power supply parameter that both ends are loaded in power grid；
At least one power supply parameter deviation is calculated according to the power supply parameter；
Evaluation point is calculated separately according to each power supply parameter deviation；
All evaluation point weighted calculations are obtained into power grid quality evaluation point.
Based on the above-mentioned technical proposal, the embodiment of the present invention can also make following improvement.
With reference to first aspect, described to obtain the power supply that both ends are loaded in power grid in the first embodiment of first aspect
Parameter specifically includes:
Obtain at least one of actual voltage value, actual current value and the leakage current value that both ends are loaded in the power grid.
Beneficial effect using above-mentioned further technical solution is: since work influence of the feeder ear to load is biggish just
It is actual voltage value, actual current value and leakage current value, by the actual voltage value, the actual current that load both ends in detection power grid
At least one of value and leakage current value, as the data basis evaluated power grid quality, guarantee finally obtained quality
Evaluation point can provide objective data for actual conditions of the user to power grid and support.
The first embodiment with reference to first aspect, it is described according to the confession in second of embodiment of first aspect
Electrical parameter calculates power supply deviation, specifically includes:
Voltage deviation value and mains by harmonics error amount are calculated according to the actual voltage value；
Or according to the actual current value calculating current deviation；
Or leakage current deviation is calculated according to the leakage current value.
Beneficial effect using above-mentioned further technical solution is: being calculated according to collected different data corresponding inclined
Difference calculates corresponding evaluation point according to each deviation, and thus the comprehensive power grid quality evaluation point obtained in this programme, is realized
The calculating of the case where to power grid.
Second of embodiment with reference to first aspect, in the third embodiment of first aspect,
The peak value of the actual voltage value and the absolute difference of preset standard voltage peak are calculated, it is inclined as the voltage
Difference；
The theoretical amplitude of each harmonic in preset time is calculated according to the actual voltage value, by every subharmonic
The absolute difference of measurement amplitude and theoretical amplitude adds up, and obtains the mains by harmonics error amount；
The peak value of the actual current value and the absolute difference of preset standard current peak are calculated, it is inclined as the electric current
Difference；
Using the leakage current value as the leakage current deviation.
The third embodiment with reference to first aspect, it is described according to each institute in the 4th kind of embodiment of first aspect
It states power supply parameter deviation and calculates separately evaluation point, specifically include:
The first evaluation is calculated according to the voltage deviation value, the default evaluation point of voltage deviation and predeterminated voltage upper deviation value
Point；
And/or according to the mains by harmonics error amount, the default evaluation point of mains by harmonics error and default mains by harmonics error
Upper limit value calculates the second evaluation point；
And/or the is calculated according to the current deviation value, default load allowance evaluation point and predetermined current upper deviation value
Three evaluations point；
And/or the 4th is calculated according to the leakage current deviation, the default evaluation point of leakage current and default leakage current upper limit value
Evaluation point.
Beneficial effect using above-mentioned further technical solution is: according to the deviation of collected different data, root
Corresponding evaluation point is calculated according to each deviation, thus the comprehensive power grid quality evaluation point obtained in this programme, is realized to power grid
The case where calculating.
The 4th kind of embodiment with reference to first aspect, it is described according to the electricity in the 5th kind of embodiment of first aspect
It presses the default evaluation point of deviation, voltage deviation and predeterminated voltage upper deviation value to calculate the first evaluation point, specifically includes:
The voltage deviation value is compared with predeterminated voltage upper deviation value；
When the voltage deviation value is greater than or equal to predeterminated voltage upper deviation value, first evaluation is divided into 0；
Alternatively, when the voltage deviation value is less than the predeterminated voltage upper deviation value, according to following calculation formula meter
Calculate first evaluation point:
Wherein, K1For first evaluation point, K1tFor the default evaluation point of the voltage deviation, Δ V is the voltage deviation
Value；ΔVupFor the predeterminated voltage upper deviation value.
The 4th kind of embodiment with reference to first aspect, it is described according to the electricity in the 6th kind of embodiment of first aspect
The default evaluation point of net harmonic error value, mains by harmonics error and default mains by harmonics error upper limit value calculate the second evaluation point, tool
Body includes:
The mains by harmonics error amount is compared with default mains by harmonics error upper limit value；
When the mains by harmonics error amount is greater than or equal to the default mains by harmonics error upper limit value, described second is commented
Valence is divided into 0；
When the mains by harmonics error amount is less than the default mains by harmonics error upper limit value, according to following calculation formula
Calculate second evaluation point:
Wherein, K2For second evaluation point, K2tFor the default evaluation point of the mains by harmonics error, Δ VHarmonic waveFor the electricity
Net harmonic error value；ΔVHarmonic wave upFor the default mains by harmonics error upper limit value.
The 4th kind of embodiment with reference to first aspect, it is described according to the electricity in the 7th kind of embodiment of first aspect
It flows deviation, default load allowance evaluation point and predetermined current upper deviation value and calculates third evaluation point, specifically include:
The current deviation value is compared with predetermined current upper deviation value；
When the current deviation value is greater than or equal to the predetermined current upper deviation value, the third evaluation is divided into 0；
Alternatively, being calculated when institute's current deviation value is less than predetermined current upper deviation value according to following calculation method
The third evaluation point:
Wherein, K3For third evaluation point, K3tFor the default load allowance evaluation point, Δ IElectric currentIt is inclined for the electric current
Difference；ΔIAllowance upFor predetermined current upper deviation value.
The 4th kind of embodiment with reference to first aspect, it is described according to the leakage in the 8th kind of embodiment of first aspect
The default evaluation point of current deviation value, leakage current and default leakage current upper limit value calculate the 4th evaluation point, specifically include:
The leakage current deviation is compared with the default leakage current upper limit value；
When the leakage current deviation is greater than or equal to default leakage current upper limit value, the 4th evaluation is divided into 0；
Alternatively, when the leakage current deviation is less than the default leakage current upper limit value, according to following calculation formula meter
Calculate the 4th evaluation point:
Wherein, K4For the 4th evaluation point, K4tFor the default evaluation point of the leakage current, Δ ILeakageFor the leakage current deviation
Value；ΔILeak upFor the default leakage current upper limit value.
With reference to first aspect, described to divide all evaluations to weighted calculation in the 9th kind of embodiment of first aspect
Power grid quality evaluation point is obtained, is specifically included:
The evaluation point is added up and obtains the power grid quality evaluation point.
With reference to first aspect, in the tenth kind of embodiment of first aspect, the power grid quality evaluation method further include:
Power grid quality evaluation point is compared with default range of value, different power grids is generated according to comparison result
Quality prompt information is shown.
Beneficial effect using above-mentioned further technical solution is: power grid quality evaluation point is carried out with default range of value
Compare, prompt information is then generated according to comparison result, and is shown, it is poor or can not be provided to load in power grid quality
In the case where good power supply, user is prompted, avoids that load is caused to go wrong because power grid electric power thus supplied is poor.
With reference to first aspect, in a kind of the tenth embodiment of first aspect, the power grid quality evaluation method further include:
Power grid quality evaluation point is compared with default range of value, when power grid quality evaluation point is lower than institute
When stating default range of value, prompting message is generated, and the prompting message and power grid quality evaluation distribution are sent to user
Terminal is shown.
Beneficial effect using above-mentioned further technical solution is: power grid quality evaluation point is carried out with default range of value
Corner generates prompting message and is sent to user terminal to provide consumer networks second-rate when power grid quality evaluation is point too low, with
It reminds user to handle, avoid that dangerous situation occurs or load is caused to damage.
The tenth a kind of embodiment with reference to first aspect, in the 12nd kind of embodiment of first aspect, the power grid matter
Measure evaluation method further include:
The user terminal receives operational order, and generates control instruction according to the operational order；
The power supply at the load both ends is disconnected according to the control instruction.
Beneficial effect using above-mentioned further technical solution is: the operational order of user terminal reception user, and according to
Operational order generates control instruction, and the power supply at load both ends is disconnected according to control instruction, is not enough in the electric power thus supplied of power grid
When meeting the requirement of load, the connection of load with power grid is disconnected in time, load is protected.
With reference to first aspect or first aspect first, second, third, fourth, the five, the six, the seven, the eight, the 9th,
Ten, the 11st or the 12nd kind of embodiment in any embodiment, in the 13rd kind of embodiment of first aspect, the power grid
Quality evaluating method further include:
Power grid quality evaluation point is compared with default range of value；
When power grid quality evaluation point is lower than the default range of value, the power supply at the load both ends is disconnected.
Beneficial effect using above-mentioned further technical solution is: by dividing and default range of value power grid quality evaluation
It is compared, if power grid quality evaluation point is too low, disconnects the power supply at load both ends in time, improve the safety of load, avoid endangering
The occurrence of dangerous.
Second aspect, the embodiment of the invention also provides a kind of power grid quality evaluating apparatus, comprising: Socket casing；Also wrap
It includes:
It is arranged in the Socket casing, is connect respectively with load supplying end, obtains the confession for loading both ends in the power grid
The power supply parameter acquisition device of electrical parameter；
It is arranged in Socket casing, is connect with the power supply parameter acquisition device, power grid is calculated according to the power supply parameter
The calculator of quality evaluation point.
In conjunction with second aspect, in the first embodiment of second aspect, the power supply parameter acquisition device includes: electric current
At least one of detection device, voltage check device and leak current detection device.
In conjunction with second aspect, in second of embodiment of second aspect, the power grid quality evaluating apparatus further include: set
It sets in Socket casing, the wireless communication apparatus being connect with the calculator.
In conjunction with second of embodiment of second aspect, in the third embodiment of second aspect, the power grid quality is commented
Valence device further include: be wirelessly connected with the wireless communication apparatus, the user that power grid quality evaluation point is shown is whole
End.
In conjunction with the third embodiment of second aspect, in the 4th kind of embodiment of second aspect, the user terminal packet
It includes: control instruction generator；
The power grid quality evaluating apparatus further include: the electronic switch on the load supplying end is set；
The power grid quality evaluating apparatus further include: be arranged in the Socket casing, connect with the electronic switch, controlled
Make the electronic switch controller that the electronic switch turns on or off；
The control instruction generator is connect by the wireless communication apparatus with the electronic switch controller.
In conjunction with second aspect, in the 5th kind of embodiment of second aspect, the power grid quality evaluating apparatus further include:
It is arranged in the Socket casing, the comparator being connect with the calculator；
It is arranged in the Socket casing, the control instruction generator being connect with the comparator；
It is arranged in the Socket casing, input terminal is connect with the control instruction generator, and output end and setting are in institute
State the electronic switch controller of the electronic switch connection on load supplying end.
In conjunction with second aspect, in the 6th kind of embodiment of second aspect, the power grid quality evaluating apparatus further include:
The tri coloured lantern on the Socket casing surface is set；
It is arranged in the Socket casing, is connect with the tri coloured lantern, control three colors of the color that the tri coloured lantern is shown
Lamp controller；
It is arranged in the Socket casing, input terminal is connect with the calculator, output end and the tri coloured lantern controller
The comparator of connection.
In conjunction with second aspect or the first, second, third, fourth, the 5th or the 6th kind of embodiment of second aspect, second
In 7th kind of embodiment of aspect, the power grid quality evaluating apparatus further include:
It is arranged on Socket casing surface, is connect with the calculator, power grid quality evaluation point is shown
Display device.
Above-mentioned technical proposal of the invention has the advantages that the embodiment of the present invention by obtaining electricity compared with prior art
The power supply parameter that both ends are loaded in net, is calculated corresponding power supply parameter deviation according to power supply parameter, and calculate each confession
Each evaluation point is calculated power grid quality evaluation point by weighted value, realized to power grid by the evaluation of electrical parameter deviation point
Power supply instruction evaluated, provide objective parameter for user and prompt, avoid causing to bear because power grid electric power thus supplied is poor
Load goes wrong.
Detailed description of the invention
Fig. 1 is a kind of power grid quality evaluation method flow diagram provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides a kind of power grid quality evaluation method flow diagram；
Fig. 3 is a kind of power grid quality evaluation method flow diagram one that further embodiment of this invention provides；
Fig. 4 be further embodiment of this invention provide a kind of power grid quality evaluation method flow diagram secondly；
Fig. 5 is a kind of power grid quality evaluation system structural schematic diagram one that further embodiment of this invention provides；
Fig. 6 be further embodiment of this invention provide a kind of power grid quality evaluation system structural schematic diagram secondly；
Fig. 7 be further embodiment of this invention provide a kind of power grid quality evaluation system structural schematic diagram thirdly；
Fig. 8 be further embodiment of this invention provide a kind of power grid quality evaluation system structural schematic diagram its four；
Fig. 9 be further embodiment of this invention provide a kind of power grid quality evaluation system structural schematic diagram its five.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of power grid quality evaluation method provided in an embodiment of the present invention, the evaluation method include:
S11, the power supply parameter that both ends are loaded in power grid is obtained.
In the present embodiment, the power supply parameter for loading both ends includes: phase voltage/line voltage, electric current, frequency, power, power
The parameters such as factor, electric energy obtain actual voltage value, actual current value and the leakage current that both ends are loaded in power grid in this step
At least one of, the actual current value at load both ends can be acquired by current transformer, load is acquired by voltage transformer
The actual voltage value at both ends and the leakage current value that load both ends are acquired by zero sequence transformer.
S12, at least one power supply parameter deviation is calculated according to power supply parameter.
In the present embodiment, the power supply-distribution system change method of operation and load, which slowly change, can make power supply-distribution system each point
Voltage also change therewith, at this moment the virtual voltage of each point and the difference of nominal voltage of a system are known as voltage deviation.Voltage deviation
The common percentage with nominal voltage of a system indicates that current deviation is consistent with the meaning of voltage deviation, is the another of parameter in power grid
One situation, since AC network active constituent is power frequency single-frequency, any ingredient different from work frequency is ok
Referred to as harmonic wave, power supply parameter deviation, which can be, calculates voltage deviation value and mains by harmonics error amount according to actual voltage value,
Alternatively, according to actual current value calculating current deviation, alternatively, calculating leakage current deviation according to leakage current value.
For example, the peak value of actual voltage value and the absolute difference of preset standard voltage peak are calculated, as voltage deviation
Value；The theoretical amplitude of each harmonic in preset time is calculated according to actual voltage value, by the measurement amplitude of every subharmonic
It adds up with the absolute difference of theoretical amplitude, obtains mains by harmonics error amount；It calculates the peak value of actual current value and presets
The absolute difference of normalized current peak value, as current deviation value；Using leakage current value as leakage current deviation, in Switching Power Supply
In order to reduce interference, according to national standard, it is necessary to be equipped with electromagnetic interface filter circuit.Due to the relationship of EMI circuit, so that in Switching Power Supply
There is a small electric current over the ground after connecting alternating current, here it is leakage currents.If earth-free, case of computer can be to area
There are 110 volts of voltages, the feeling for having fiber crops is touched with hand, while influence will also result on computer operation.So leakage current is optimal
Situation is exactly that leakage current is zero, and the leakage current of generation is leakage current deviation.
S13, evaluation point is calculated separately according to each power supply parameter deviation.
In the present embodiment, according to the power supply parameter deviation in above-mentioned steps, each power supply parameter deviation is calculated separately
The evaluation of value point then corresponds to the evaluation point of the power supply parameter deviation for example, a certain power supply parameter deviation is bigger in the power grid
Should be lower, to realize according to power supply parameter deviation Calculation Estimation point.
For example, calculating first according to voltage deviation value, the default evaluation point of voltage deviation and predeterminated voltage upper deviation value and commenting
Valence point, wherein the default evaluation point of voltage deviation can be is configured according to influence degree of the voltage deviation to load running, and
Predeterminated voltage upper deviation value can be the upper limit value of load running voltage or be less than or equal to lower limit value and rated voltage with load
The absolute value of the difference of value.
Calculating the method that the first evaluation divides includes:
S21, voltage deviation value is compared with predeterminated voltage upper deviation value.
S22a, when voltage deviation value be greater than or equal to predeterminated voltage upper deviation value when, first evaluation be divided into 0.
In the present embodiment, if voltage deviation value is greater than or equal to predeterminated voltage upper deviation value, illustrate electricity at this time
Supply voltage in net have been above or equal to load running voltage upper limit value or be less than or equal to lower limit value, at this time
Load should not be accessed power grid, so corresponding first evaluation of voltage deviation value is divided into zero.
S22b or, when voltage deviation value is less than predeterminated voltage upper deviation value, calculate the according to following calculation formula
One evaluation point:
Wherein, K1For the first evaluation point, K1tFor the default evaluation point of voltage deviation, Δ V is voltage deviation value；ΔVupIt is default
Voltage deviation upper limit value.
In the present embodiment, it when voltage deviation value is less than predeterminated voltage upper deviation value, is accounted for according to voltage deviation value pre-
If the ratio of voltage deviation upper limit value, the first evaluation point is calculated.
For example, according to mains by harmonics error amount, the default evaluation point of mains by harmonics error and the default mains by harmonics error upper limit
Value calculates the second evaluation point, specifically, the method for calculating the second evaluation point includes:
S31, mains by harmonics error amount is compared with default mains by harmonics error upper limit value.
S32a, when mains by harmonics error amount is greater than or equal to default mains by harmonics error upper limit value, the second evaluation is divided into
0。
In the present embodiment, if mains by harmonics error amount is greater than or equal to default mains by harmonics error upper limit value, explanation
The mains by harmonics in power grid at this time have been above or equal to load running default mains by harmonics upper limit value or be less than or wait
In lower limit value, load should not be accessed power grid at this time, so corresponding second evaluation of mains by harmonics error amount is divided into zero.
S32b, when mains by harmonics error amount is less than default mains by harmonics error upper limit value, according to following calculation formula meter
Calculate the second evaluation point:
Wherein, K2For the second evaluation point, K2tFor the default evaluation point of mains by harmonics error, Δ VHarmonic waveFor mains by harmonics error amount；
ΔVHarmonic wave upTo preset mains by harmonics error upper limit value.
In the present embodiment, humorous according to power grid when mains by harmonics error amount is less than default mains by harmonics error upper limit value
Wave error value accounts for the ratio of default mains by harmonics error upper limit value, and the second evaluation point is calculated.
For example, calculating third according to current deviation value, default load allowance evaluation point and predetermined current upper deviation value and commenting
Valence point, specifically, the method for calculating third evaluation point includes:
S41, current deviation value is compared with predetermined current upper deviation value.
S42a, when current deviation value be greater than or equal to predetermined current upper deviation value when, third evaluation is divided into 0.
In the present embodiment, if current deviation value is greater than or equal to predetermined current upper deviation value, illustrate electricity at this time
Current deviation value in net have been above or equal to load running current upper limit value or be less than or equal to lower limit value, at this time
Through that load should not be accessed power grid, so the corresponding third evaluation of current deviation value is divided into zero.
S42b or, when institute's current deviation value be less than predetermined current upper deviation value when, according to following calculation method calculate
Third evaluation point:
Wherein, K3For third evaluation point, K3tFor default load allowance evaluation point, Δ IElectric currentFor current deviation value；ΔIAllowance upFor
Predetermined current upper deviation value.
In the present embodiment, it when current deviation value is less than predetermined current upper deviation value, is accounted for according to current deviation value pre-
If the ratio of current deviation upper limit value, third evaluation point is calculated.
For example, calculating the 4th evaluation according to leakage current deviation, the default evaluation point of leakage current and default leakage current upper limit value
Point, specifically, the method for calculating the 4th evaluation point includes:
S51, leakage current deviation is compared with default leakage current upper limit value；
S52a, when leakage current deviation is greater than or equal to default leakage current upper limit value, the 4th evaluation is divided into 0.
In the present embodiment, if leakage current deviation is greater than or equal to default leakage current upper limit value, illustrate electricity at this time
Leakage current deviation in net have been above or equal to load running leakage current upper limit value or be less than or equal to lower limit value, this
When should not will load access power grid, so leakage current deviation it is corresponding 4th evaluation be divided into zero.
S52b or, when leakage current deviation is less than default leakage current upper limit value, calculate the according to following calculation formula
Four evaluations point:
Wherein, K4For the 4th evaluation point, K4tFor the default evaluation point of leakage current, Δ ILeakageFor leakage current deviation；ΔILeak upIt is pre-
If leakage current upper limit value.
In the present embodiment, it when leakage current deviation is less than default leakage current upper limit value, is accounted for according to leakage current deviation
The 4th evaluation point is calculated in the ratio of default leakage current upper limit value.
S14, all evaluation point weighted calculations are obtained to power grid quality evaluation point.
In the present embodiment, the power grid quality that obtains for all evaluation point weighted calculations that above-described embodiment is calculated is commented
Valence point is set weight for example, can set up separately according to the significance level of the corresponding power supply parameter of different evaluation point to the evaluation, will be evaluated
Divide and carries out that power grid quality evaluation point is calculated by weight, according to above-described embodiment, due to calculating different evaluation timesharing, all in accordance with
Default evaluation point is calculated, since the default evaluation point of different power supply parameters can be according to the significance level of power supply parameter
Default evaluation point is set, so, it only needs to add up all evaluations being calculated point at this time, power grid quality evaluation can be obtained
Point.
In the present embodiment, power grid quality evaluation method further include:
S15, power grid quality evaluation point is compared with default range of value.
S16, when power grid quality evaluation point is lower than default range of value, disconnect the power supply at load both ends.
In the present embodiment, when power grid quality evaluation point is lower than default range of value, the power supply at load both ends is disconnected, is kept away
Exempt from grid supply quality poor the case where causing load to damage, improves the safety of load.
As shown in Fig. 2, the embodiment of the invention also provides a kind of power grid quality evaluation method, with evaluation method shown in Fig. 1
It compares, difference is:
S21, the power supply parameter that both ends are loaded in power grid is obtained.
In the present embodiment, the power supply parameter for loading both ends includes: phase voltage/line voltage, electric current, frequency, power, power
The parameters such as factor, electric energy obtain actual voltage value, actual current value and the leakage current that both ends are loaded in power grid in this step
At least one of, the actual current value at load both ends can be acquired by current transformer, load is acquired by voltage transformer
The actual voltage value at both ends and the leakage current value that load both ends are acquired by zero sequence transformer.
S22, at least one power supply parameter deviation is calculated according to power supply parameter.
In the present embodiment, the power supply-distribution system change method of operation and load, which slowly change, can make power supply-distribution system each point
Voltage also change therewith, at this moment the virtual voltage of each point and the difference of nominal voltage of a system are known as voltage deviation.Voltage deviation
The common percentage with nominal voltage of a system indicates that current deviation is consistent with the meaning of voltage deviation, is the another of parameter in power grid
One situation, since AC network active constituent is power frequency single-frequency, any ingredient different from work frequency is ok
Referred to as harmonic wave, power supply parameter deviation, which can be, calculates voltage deviation value and mains by harmonics error amount according to actual voltage value,
Alternatively, according to actual current value calculating current deviation, alternatively, calculating leakage current deviation according to leakage current value.
S23, evaluation point is calculated separately according to each power supply parameter deviation.
In the present embodiment, according to the power supply parameter deviation in above-mentioned steps, each power supply parameter deviation is calculated separately
The evaluation of value point then corresponds to the evaluation point of the power supply parameter deviation for example, a certain power supply parameter deviation is bigger in the power grid
Should be lower, to realize according to power supply parameter deviation Calculation Estimation point.
S24, all evaluation point weighted calculations are obtained to power grid quality evaluation point.
In the present embodiment, the power grid quality that obtains for all evaluation point weighted calculations that above-described embodiment is calculated is commented
Valence point is set weight for example, can set up separately according to the significance level of the corresponding power supply parameter of different evaluation point to the evaluation, will be evaluated
Divide and carries out that power grid quality evaluation point is calculated by weight, according to above-described embodiment, due to calculating different evaluation timesharing, all in accordance with
Default evaluation point is calculated.
S25, power grid quality evaluation point is compared with default range of value, different power grids is generated according to comparison result
Quality prompt information is shown.
In the present embodiment, by the way that power grid quality evaluation point to be compared with default range of value, according to comparison result
It generates different power grid quality prompt informations to be shown, for example, power grid quality is poor, it is proposed that disconnect the load connecting with power grid
Prompting message, power grid quality is good, and the prompting message of load can be used.
As shown in figure 3, the embodiment of the invention also provides a kind of power grid quality evaluation method, with evaluation method shown in Fig. 1
It compares, difference is:
S31, the power supply parameter that both ends are loaded in power grid is obtained.
In the present embodiment, the power supply parameter for loading both ends includes: phase voltage/line voltage, electric current, frequency, power, power
The parameters such as factor, electric energy obtain actual voltage value, actual current value and the leakage current that both ends are loaded in power grid in this step
At least one of, the actual current value at load both ends can be acquired by current transformer, load is acquired by voltage transformer
The actual voltage value at both ends and the leakage current value that load both ends are acquired by zero sequence transformer.
S32, at least one power supply parameter deviation is calculated according to power supply parameter.
In the present embodiment, the power supply-distribution system change method of operation and load, which slowly change, can make power supply-distribution system each point
Voltage also change therewith, at this moment the virtual voltage of each point and the difference of nominal voltage of a system are known as voltage deviation.Voltage deviation
The common percentage with nominal voltage of a system indicates that current deviation is consistent with the meaning of voltage deviation, is the another of parameter in power grid
One situation, since AC network active constituent is power frequency single-frequency, any ingredient different from work frequency is ok
Referred to as harmonic wave, power supply parameter deviation, which can be, calculates voltage deviation value and mains by harmonics error amount according to actual voltage value,
Alternatively, according to actual current value calculating current deviation, alternatively, calculating leakage current deviation according to leakage current value.
S33, evaluation point is calculated separately according to each power supply parameter deviation.
In the present embodiment, according to the power supply parameter deviation in above-mentioned steps, each power supply parameter deviation is calculated separately
The evaluation of value point then corresponds to the evaluation point of the power supply parameter deviation for example, a certain power supply parameter deviation is bigger in the power grid
Should be lower, to realize according to power supply parameter deviation Calculation Estimation point.
S34, all evaluation point weighted calculations are obtained to power grid quality evaluation point.
In the present embodiment, the power grid quality that obtains for all evaluation point weighted calculations that above-described embodiment is calculated is commented
Valence point is set weight for example, can set up separately according to the significance level of the corresponding power supply parameter of different evaluation point to the evaluation, will be evaluated
Divide and carries out that power grid quality evaluation point is calculated by weight, according to above-described embodiment, due to calculating different evaluation timesharing, all in accordance with
Default evaluation point is calculated.
S35, power grid quality evaluation point is compared with default range of value, when power grid quality evaluation point is commented lower than default
When valence range, prompting message is generated, and will be prompted to message and power grid quality evaluation distribution is sent to user terminal and is shown.
In the present embodiment, it when power grid quality evaluation point is lower than preset threshold range, generates prompting message and is sent to use
Family terminal realizes long-range monitoring power grid quality.
In the present embodiment, user terminal receives operational order, and generates control instruction according to operational order；According to control
Instruction disconnects the power supply at load both ends.
In the present embodiment, operational order is received according to user terminal, control instruction is generated according to operational order, passes through control
System instruction by load both ends for electrically disconnected, realize that long-range control load disconnects, improve the safety of load.
As shown in figure 4, the embodiment of the invention also provides a kind of power grid quality evaluating apparatus, comprising: Socket casing.
In the present embodiment, power grid quality evaluating apparatus further include: be arranged in Socket casing, respectively with load supplying end
Connection obtains the power supply parameter acquisition device that the power supply parameter at both ends is loaded in power grid.In the present embodiment, the confession at both ends is loaded
Electrical parameter includes: the parameters such as phase voltage/line voltage, electric current, frequency, power, power factor, electric energy, in this step, obtains electricity
At least one of actual voltage value, actual current value and the leakage current that both ends are loaded in net, can be acquired by current transformer
The actual current value at both ends is loaded, the actual voltage value at load both ends is acquired by voltage transformer and is adopted by zero sequence transformer
The leakage current value at collection load both ends.
In the present embodiment, power grid quality evaluating apparatus further include: be arranged in Socket casing, obtain and fill with power supply parameter
Connection is set, the calculator of power grid quality evaluation point is calculated according to power supply parameter.
In the present embodiment, calculator calculates at least one power supply parameter deviation according to power supply parameter, in the present embodiment
In, power supply-distribution system, which changes the method for operation and load, which slowly to be changed, can be such that the voltage of power supply-distribution system each point also changes therewith,
At this moment the virtual voltage of each point and the difference of nominal voltage of a system are known as voltage deviation.Voltage deviation is also commonly used and nominal voltage of a system
Percentage indicate, current deviation is consistent with the meaning of voltage deviation, be power grid in parameter another situation, due to AC network
Active constituent is power frequency single-frequency, therefore any ingredient different from work frequency can be referred to as harmonic wave, power supply parameter
Deviation, which can be, calculates voltage deviation value and mains by harmonics error amount according to actual voltage value, alternatively, according to actual current value
Calculating current deviation, alternatively, calculating leakage current deviation according to leakage current value.
In the present embodiment, calculator calculates separately evaluation point according to each power supply parameter deviation.For example, according to above-mentioned
Power supply parameter deviation in step calculates separately the evaluation point of each power supply parameter deviation, for example, a certain power supply parameter is inclined
Difference is bigger, then the evaluation point that the power supply parameter deviation is corresponded in the power grid should be lower, inclined according to power supply parameter to realize
Difference Calculation Estimation point.
In the present embodiment, all evaluation point weighted calculations are obtained power grid quality evaluation point by calculator.For example, by above-mentioned
All evaluation point weighted calculations that embodiment is calculated obtain power grid quality evaluation point, for example, can be according to different evaluation
Divide the significance level of corresponding power supply parameter to set up the evaluation separately and set weight, carries out evaluation point that power grid matter is calculated by weight
Amount evaluation point.
As shown in figure 5, in the present embodiment, power grid quality evaluating apparatus further include: be arranged in Socket casing, with calculating
The wireless communication apparatus of device connection.Power grid quality evaluating apparatus further include: be wirelessly connected with wireless communication apparatus, by power grid quality
The user terminal that evaluation point is shown.The power grid that calculator is calculated by the wireless communication apparatus being connect with calculator
Quality evaluation distribution is sent to user terminal and is shown.
As shown in fig. 6, in the present embodiment, user terminal includes: control instruction generator；Power grid quality evaluating apparatus is also
It include: the electronic switch being arranged on load supplying end；Power grid quality evaluating apparatus further include: it is arranged in Socket casing, with
Electronic switch connection, the electronic switch controller that control electronic switch turns on or off；Control instruction generator passes through channel radio
News device is connect with electronic switch controller.Operation detection device is additionally provided on user terminal, by detecting user's operation, root
Control instruction is generated according to control instruction generator and is sent to the electronic switch controller on load supplying end, and control electronic switch is opened
It opens or closes, realize the remote shutdown of the power supply to load.
As shown in fig. 7, in the present embodiment, power grid quality evaluating apparatus further include: be arranged in Socket casing, with calculating
The comparator of device connection；It is arranged in Socket casing, the control instruction generator being connect with comparator；It is arranged in Socket casing
Interior, input terminal is connect with control instruction generator, the electronics that output end is connect with the electronic switch being arranged on load supplying end
Switch controller.It is additionally provided with the comparator connecting with calculator in Socket casing, is divided power grid quality evaluation by comparator
It is compared with preset threshold range, when power grid quality evaluation point is less than preset threshold range, passes through control instruction generator
It generates control instruction and is sent to electronic switch controller, electronic switch is controlled by electronic switch controller and disconnects load and power grid
Connection, to avoid load damaged because electric power thus supplied is poor.
As shown in figure 8, in the present embodiment, power grid quality evaluating apparatus further include: be arranged in the three of Socket casing surface
Colored lights；It is arranged in Socket casing, is connect with tri coloured lantern, the tri coloured lantern controller for the color that control tri coloured lantern is shown；Setting exists
In Socket casing, input terminal is connect with calculator, the comparator that output end is connect with tri coloured lantern controller.It will be electric by comparator
Net quality evaluation point is compared with preset threshold range, and tri coloured lantern controller controls three according to the comparison result of comparator respectively
The different color of aspect, to realize the prompt to user.
As shown in figure 9, in the present embodiment, power grid quality evaluating apparatus further include: be arranged on Socket casing surface, with meter
Device connection is calculated, the display device that power grid quality evaluation point is shown.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (22)
1. a kind of power grid quality evaluation method, which is characterized in that the evaluation method includes:
Obtain the power supply parameter that both ends are loaded in power grid；
At least one power supply parameter deviation is calculated according to the power supply parameter；
Evaluation point is calculated separately according to each power supply parameter deviation；
All evaluation point weighted calculations are obtained into power grid quality evaluation point.
2. power grid quality evaluation method according to claim 1, which is characterized in that described obtain loads both ends in power grid
Power supply parameter specifically includes:
Obtain at least one of actual voltage value, actual current value and the leakage current value that both ends are loaded in the power grid.
3. power grid quality evaluation method according to claim 2, which is characterized in that described to be calculated according to the power supply parameter
Power supply deviation, specifically includes:
Voltage deviation value and mains by harmonics error amount are calculated according to the actual voltage value；
Or according to the actual current value calculating current deviation；
Or leakage current deviation is calculated according to the leakage current value.
4. power grid quality evaluation method according to claim 3, which is characterized in that
The peak value of the actual voltage value and the absolute difference of preset standard voltage peak are calculated, as the voltage deviation
Value；
The theoretical amplitude of each harmonic in preset time is calculated according to the actual voltage value, by the measurement of every subharmonic
The absolute difference of amplitude and theoretical amplitude adds up, and obtains the mains by harmonics error amount；
The peak value of the actual current value and the absolute difference of preset standard current peak are calculated, as the current deviation
Value；
Using the leakage current value as the leakage current deviation.
5. power grid quality evaluation method according to claim 4, which is characterized in that described according to each power supply parameter
Deviation calculates separately evaluation point, specifically includes:
The first evaluation point is calculated according to the voltage deviation value, the default evaluation point of voltage deviation and predeterminated voltage upper deviation value；
And/or according to the mains by harmonics error amount, the default evaluation point of mains by harmonics error and the default mains by harmonics error upper limit
Value calculates the second evaluation point；
And/or it calculates third according to the current deviation value, default load allowance evaluation point and predetermined current upper deviation value and comments
Valence point；
And/or the 4th evaluation is calculated according to the leakage current deviation, the default evaluation point of leakage current and default leakage current upper limit value
Point.
6. power grid quality evaluation method according to claim 5, which is characterized in that it is described according to the voltage deviation value,
The default evaluation point of voltage deviation and predeterminated voltage upper deviation value calculate the first evaluation point, specifically include:
The voltage deviation value is compared with predeterminated voltage upper deviation value；
When the voltage deviation value is greater than or equal to predeterminated voltage upper deviation value, first evaluation is divided into 0；
Alternatively, calculating institute according to following calculation formula when the voltage deviation value is less than the predeterminated voltage upper deviation value
State the first evaluation point:
Wherein, K1For first evaluation point, K1tFor the default evaluation point of the voltage deviation, Δ V is the voltage deviation value；Δ
VupFor the predeterminated voltage upper deviation value.
7. power grid quality evaluation method according to claim 5, which is characterized in that described according to the mains by harmonics error
The default evaluation point of value, mains by harmonics error and default mains by harmonics error upper limit value calculate the second evaluation point, specifically include:
The mains by harmonics error amount is compared with default mains by harmonics error upper limit value；
When the mains by harmonics error amount is greater than or equal to the default mains by harmonics error upper limit value, second evaluation point
It is 0；
When the mains by harmonics error amount is less than the default mains by harmonics error upper limit value, calculated according to following calculation formula
Second evaluation point:
Wherein, K2For second evaluation point, K2tFor the default evaluation point of the mains by harmonics error, Δ VHarmonic waveIt is humorous for the power grid
Wave error value；ΔVHarmonic wave upFor the default mains by harmonics error upper limit value.
8. power grid quality evaluation method according to claim 5, which is characterized in that it is described according to the current deviation value,
Default load allowance evaluation point and predetermined current upper deviation value calculate third evaluation point, specifically include:
The current deviation value is compared with predetermined current upper deviation value；
When the current deviation value is greater than or equal to the predetermined current upper deviation value, the third evaluation is divided into 0；
Alternatively, when institute's current deviation value is less than predetermined current upper deviation value, according to the calculating of following calculation method
Third evaluation point:
Wherein, K3For third evaluation point, K3tFor the default load allowance evaluation point, Δ IElectric currentFor the current deviation value；
ΔIAllowance upFor predetermined current upper deviation value.
9. power grid quality evaluation method according to claim 5, which is characterized in that described according to the leakage current deviation
The default evaluation point of value, leakage current and default leakage current upper limit value calculate the 4th evaluation point, specifically include:
The leakage current deviation is compared with the default leakage current upper limit value；
When the leakage current deviation is greater than or equal to default leakage current upper limit value, the 4th evaluation is divided into 0；
Alternatively, calculating institute according to following calculation formula when the leakage current deviation is less than the default leakage current upper limit value
State the 4th evaluation point:
Wherein, K4For the 4th evaluation point, K4tFor the default evaluation point of the leakage current, Δ ILeakageFor the leakage current deviation；
ΔILeak upFor the default leakage current upper limit value.
10. power grid quality evaluation method according to claim 1, which is characterized in that described to add all evaluations point
Power grid quality evaluation point is calculated in power, specifically includes:
The evaluation point is added up and obtains the power grid quality evaluation point.
11. power grid quality evaluation method according to claim 1, which is characterized in that the power grid quality evaluation method is also
Include:
Power grid quality evaluation point is compared with default range of value, different power grid qualities is generated according to comparison result
Prompt information is shown.
12. power grid quality evaluation method according to claim 1, which is characterized in that the power grid quality evaluation method is also
Include:
Power grid quality evaluation point is compared with default range of value, when power grid quality evaluation point is lower than described pre-
If when range of value, generating prompting message, and the prompting message and power grid quality evaluation distribution are sent to user terminal
It is shown.
13. power grid quality evaluation method according to claim 12, which is characterized in that the power grid quality evaluation method is also
Include:
The user terminal receives operational order, and generates control instruction according to the operational order；
The power supply at the load both ends is disconnected according to the control instruction.
14. power grid quality evaluation method described according to claim 1~13, which is characterized in that the power grid quality evaluation side
Method further include:
Power grid quality evaluation point is compared with default range of value；
When power grid quality evaluation point is lower than the default range of value, the power supply at the load both ends is disconnected.
15. a kind of power grid quality evaluating apparatus characterized by comprising Socket casing；Further include:
It is arranged in the Socket casing, is connect respectively with load supplying end, obtains the power supply ginseng for loading both ends in the power grid
Several power supply parameter acquisition device；
It is arranged in Socket casing, is connect with the power supply parameter acquisition device, power grid quality is calculated according to the power supply parameter
The calculator of evaluation point.
16. power grid quality evaluating apparatus according to claim 15, which is characterized in that the power supply parameter acquisition device packet
It includes: at least one of current detection means, voltage check device and leak current detection device.
17. power grid quality evaluating apparatus according to claim 15, which is characterized in that the power grid quality evaluating apparatus is also
It include: to be arranged in Socket casing, the wireless communication apparatus being connect with the calculator.
18. power grid quality evaluating apparatus according to claim 17, which is characterized in that the power grid quality evaluating apparatus is also
It include: to be wirelessly connected with the wireless communication apparatus, the user terminal that power grid quality evaluation point is shown.
19. power grid quality evaluating apparatus according to claim 18, which is characterized in that the user terminal includes: control
Instruction generator；
The power grid quality evaluating apparatus further include: the electronic switch on the load supplying end is set；
The power grid quality evaluating apparatus further include: be arranged in the Socket casing, connect with the electronic switch, control institute
State the electronic switch controller that electronic switch turns on or off；
The control instruction generator is connect by the wireless communication apparatus with the electronic switch controller.
20. power grid quality evaluating apparatus according to claim 15, which is characterized in that the power grid quality evaluating apparatus is also
Include:
It is arranged in the Socket casing, the comparator being connect with the calculator；
It is arranged in the Socket casing, the control instruction generator being connect with the comparator；
It is arranged in the Socket casing, input terminal is connect with the control instruction generator, and output end and setting are described negative
Carry the electronic switch controller of the electronic switch connection on feeder ear.
21. power grid quality evaluating apparatus according to claim 15, which is characterized in that the power grid quality evaluating apparatus is also
Include:
The tri coloured lantern on the Socket casing surface is set；
It is arranged in the Socket casing, is connect with the tri coloured lantern, control the tri coloured lantern control for the color that the tri coloured lantern is shown
Device processed；
It is arranged in the Socket casing, input terminal is connect with the calculator, and output end is connect with the tri coloured lantern controller
Comparator.
22. any power grid quality evaluating apparatus in 5~21 according to claim 1, which is characterized in that the power grid quality
Evaluating apparatus further include:
It is arranged on Socket casing surface, is connect with the calculator, power grid quality evaluation point is shown aobvious
Showing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353767.7A CN109510191B (en) | 2018-11-14 | 2018-11-14 | Power grid quality evaluation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353767.7A CN109510191B (en) | 2018-11-14 | 2018-11-14 | Power grid quality evaluation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109510191A true CN109510191A (en) | 2019-03-22 |
| CN109510191B CN109510191B (en) | 2024-04-05 |
Family
ID=65748433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811353767.7A Active CN109510191B (en) | 2018-11-14 | 2018-11-14 | Power grid quality evaluation method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109510191B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114173459A (en) * | 2021-11-25 | 2022-03-11 | 山东浪潮工业互联网产业股份有限公司 | Universal three-color lamp system capable of automatically sleeping and awakening and equipment operation monitoring system |
| CN114675736A (en) * | 2022-03-25 | 2022-06-28 | 苏州浪潮智能科技有限公司 | Power management method, electronic device, storage medium and system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120022269A (en) * | 2010-09-01 | 2012-03-12 | 한국전력공사 | System and method for assessment of harmonic emission limits at cus transmission |
| CN102394496A (en) * | 2011-07-21 | 2012-03-28 | 浙江大学 | Electric energy quality comprehensive assessment method of distributed generating system and micro power grid |
| CN102982394A (en) * | 2012-11-20 | 2013-03-20 | 电子科技大学 | Power distribution network load parameter identification method and system |
| US20130135907A1 (en) * | 2010-08-06 | 2013-05-30 | Meidensha Corporation | Harmonic current suppression method and harmonic current suppression device of power conversion device |
| US20140286166A1 (en) * | 2013-03-20 | 2014-09-25 | Tencent Technology (Shenzhen) Company Limited | Method and Device for Loading Read Content |
| CN105006820A (en) * | 2015-06-26 | 2015-10-28 | 广西电网有限责任公司电力科学研究院 | Quantitative analysis method for influence of electric energy quality on comprehensive energy consumption of power transmission line |
| CN105096211A (en) * | 2015-07-27 | 2015-11-25 | 国网天津市电力公司 | Property evaluation method for maximum power supply capability model solution of urban medium voltage distribution network |
| CN106228301A (en) * | 2016-07-20 | 2016-12-14 | 广东电网有限责任公司东莞供电局 | Method and device for acquiring comprehensive utilization rate of power distribution network equipment |
| CN107123991A (en) * | 2017-05-17 | 2017-09-01 | 华北水利水电大学 | Dynamic electric voltage recovery device control method and device based on Fuzzy particle swarm optimization |
| CN107767083A (en) * | 2017-11-16 | 2018-03-06 | 哈尔滨理工大学 | A kind of grid power transmission quality evaluating method judged based on division arithmetic |
| CN108490248A (en) * | 2018-03-13 | 2018-09-04 | 浙江海洋大学 | A kind of voltage monitoring and voltage protection |
-
2018
- 2018-11-14 CN CN201811353767.7A patent/CN109510191B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130135907A1 (en) * | 2010-08-06 | 2013-05-30 | Meidensha Corporation | Harmonic current suppression method and harmonic current suppression device of power conversion device |
| KR20120022269A (en) * | 2010-09-01 | 2012-03-12 | 한국전력공사 | System and method for assessment of harmonic emission limits at cus transmission |
| CN102394496A (en) * | 2011-07-21 | 2012-03-28 | 浙江大学 | Electric energy quality comprehensive assessment method of distributed generating system and micro power grid |
| CN102982394A (en) * | 2012-11-20 | 2013-03-20 | 电子科技大学 | Power distribution network load parameter identification method and system |
| US20140286166A1 (en) * | 2013-03-20 | 2014-09-25 | Tencent Technology (Shenzhen) Company Limited | Method and Device for Loading Read Content |
| CN105006820A (en) * | 2015-06-26 | 2015-10-28 | 广西电网有限责任公司电力科学研究院 | Quantitative analysis method for influence of electric energy quality on comprehensive energy consumption of power transmission line |
| CN105096211A (en) * | 2015-07-27 | 2015-11-25 | 国网天津市电力公司 | Property evaluation method for maximum power supply capability model solution of urban medium voltage distribution network |
| CN106228301A (en) * | 2016-07-20 | 2016-12-14 | 广东电网有限责任公司东莞供电局 | Method and device for acquiring comprehensive utilization rate of power distribution network equipment |
| CN107123991A (en) * | 2017-05-17 | 2017-09-01 | 华北水利水电大学 | Dynamic electric voltage recovery device control method and device based on Fuzzy particle swarm optimization |
| CN107767083A (en) * | 2017-11-16 | 2018-03-06 | 哈尔滨理工大学 | A kind of grid power transmission quality evaluating method judged based on division arithmetic |
| CN108490248A (en) * | 2018-03-13 | 2018-09-04 | 浙江海洋大学 | A kind of voltage monitoring and voltage protection |
Non-Patent Citations (1)
| Title |
|---|
| 卿岑: "电能质量综合评估方法与某地区电网综合评估研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》, pages 042 - 271 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114173459A (en) * | 2021-11-25 | 2022-03-11 | 山东浪潮工业互联网产业股份有限公司 | Universal three-color lamp system capable of automatically sleeping and awakening and equipment operation monitoring system |
| CN114173459B (en) * | 2021-11-25 | 2024-04-19 | 浪潮工业互联网股份有限公司 | Universal three-color lamp system capable of automatically dormancy and awakening and equipment operation monitoring system |
| CN114675736A (en) * | 2022-03-25 | 2022-06-28 | 苏州浪潮智能科技有限公司 | Power management method, electronic device, storage medium and system |
| CN114675736B (en) * | 2022-03-25 | 2023-06-23 | 苏州浪潮智能科技有限公司 | Power management method, electronic device, storage medium and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109510191B (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202840123U (en) | Intelligent socket | |
| WO2018076554A1 (en) | Alternating current-direct current intelligent home micro-grid cooperative system, and operation method therefor | |
| CN203839619U (en) | Intelligent socket used for Internet remote control and electric quantity measurement | |
| Hardie et al. | The effect of new residential appliances on Power Quality | |
| CN109510191A (en) | Power grid quality evaluation method and device | |
| CN204515032U (en) | A kind of proving installation of energy feedback unit | |
| CN106487022A (en) | A kind of rural area low-voltage administering method | |
| CN107291202A (en) | Regulation and control method, device and the computer-readable recording medium of power supply | |
| CN204144950U (en) | A kind of compensation program control circuit on-load voltage regulation system | |
| CN107453360A (en) | A kind of power supply quality optimizes device and method | |
| CN205646829U (en) | Alternating voltage compensating system | |
| CN103915846B (en) | A kind of for the energy-conservation of base station and Intelligent power distribution device | |
| CN202817886U (en) | Uninterruptible power source | |
| CN207851180U (en) | A kind of frequency converter feed-back type band carries aging equipment and system | |
| CN207183817U (en) | A kind of Intelligent power quality Comprehensive Control cabinet based on Internet of Things | |
| CN209132599U (en) | A kind of universal self-adaption constant power heater circuit and its device | |
| CN202917746U (en) | Intelligent safety socket | |
| CN208314086U (en) | Test system for rapid bypass series compensation of high-voltage direct-current system | |
| CN103199611B (en) | A kind of power circuit of the network equipment | |
| Nikum et al. | Harmonic analysis of residential load based on power quality | |
| Ahn et al. | Comparative analysis and safety standard guideline of AC and DC supplied home appliances | |
| CN208608778U (en) | Dispatch data net safety device | |
| CN203352462U (en) | Electronic energy-saving battery | |
| CN109980671A (en) | The design method of multi-terminal HVDC transmission DC filter | |
| CN210444538U (en) | Novel LED power supply circuit capable of realizing no stroboscopic effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |