CN104361422A - Power consumer power quality data collection method based on economic evaluation - Google Patents
Power consumer power quality data collection method based on economic evaluation Download PDFInfo
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- CN104361422A CN104361422A CN201410519654.5A CN201410519654A CN104361422A CN 104361422 A CN104361422 A CN 104361422A CN 201410519654 A CN201410519654 A CN 201410519654A CN 104361422 A CN104361422 A CN 104361422A
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Abstract
The invention provides a power consumer power quality data collection method based on economic evaluation. The method includes S1), determining user-oriented power quality problem classification, and defining collection ranges of power consumer power quality data according to sensitivity of electric equipment to power quality; S2), determining specific power quality technical data required to be collected according to the collection ranges of different power consumer power quality data; S3) for actual conditions of power consumers, collecting the power quality technical data by a simulating calculation method or a field measurement method; S4), subjecting the collected power quality technical data to statistical treatment. The power consumer power quality data collection method can lay the foundation for evaluation of production losses caused by power quality problems of the power consumers.
Description
Technical field
The invention belongs to quality of power supply field, be specifically related to a kind of power consumer power quality data collection method based on economic evaluation.
Background technology
Along with the develop rapidly of society, the requirement of people to power supply is more and more higher.Power disturbance may cause that the equipment of industrial user shuts down, galloping or make mistakes, efficiency declines or the lost of life etc., and then impact (or interrupting completely) production run or service activity, thus causes economic loss.Along with the complicated of industrial load and the raising of user's request level, the importance of the quality of power supply in dsm highlights day by day.The quality of power supply may cause the equipment of user to stop transport, operate make mistakes, efficiency declines or the lost of life etc., bring huge financial cost to user, greatly have impact on the effective economic utilization of electric energy of Demand-side.
The quality of power supply embody subscriber equipment with its be connected degree of compatibility between electrical network, it itself is a bilateral issue, therefore when carrying out quality of power supply economic analysis, all participants must be considered, comprising user, Utilities Electric Co., equipment manufacturers and regulator etc.Wherein, the impact that is subject to of user is the most direct also the most serious.
For user, the generation of financial cost means the decline of production efficiency, and brings the waste of the energy, and the target of this and current energy-saving and emission-reduction runs in the opposite direction.Meanwhile, the susceptibility of modern comfort is more and more higher, and the management expectancy of user is also subtilized, the proposition of " lean management " concept, require that user is with minimum resource input, as manpower, equipment, fund, material, Time and place etc., creates value as much as possible especially.Therefore, the financial cost of the accurate evaluation quality of power supply, and formulate Managed Solution to reduce this cost, self-management level is improved to user and obtains maximum return important in inhibiting.
To sum up; the financial cost of the correct assessment quality of power supply, and the resolution of economical rationality is proposed, the production management of the participants such as user, Utilities Electric Co. and equipment manufacturers can not only be improved; increase economic benefit, also to economize energy and alleviating energy crisis all important in inhibitings.And the correct assessment of quality of power supply financial cost is based upon on comprehensive, reasonably to collect quality of power supply economy data basis, therefore, use rational method, collect the economic loss that correct power quality data causes for power consumer qualitative assessment power quality problem and have great importance.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of power consumer power quality data collection method based on economic evaluation, the method specify that the technical data that the loss needs that assessment power quality problem causes are collected, propose power quality data collection method, and power quality data disposal route, for custom power quality Economic loss evaluation lays the foundation.
The technical solution adopted in the present invention is: a kind of power consumer power quality data collection method based on economic evaluation, comprising:
S1) determine that user oriented power quality problem is classified, with consumer to the susceptibility of electrical energy power quality disturbance for foundation, specify the capture range of power consumer power quality data;
S2) according to the capture range of different power consumer power quality data, required concrete quality of power supply technical data of collecting is determined;
S3) for the actual conditions of power consumer, simulation calculation method or measurement method is adopted to collect quality of power supply technical data;
S4) quality of power supply technical data collected by statistical treatment, the production loss assessment that the power quality problem for power consumer causes lays the foundation.
Described method, the susceptibility of consumer described in step S1 to electrical energy power quality disturbance refers to the sensitivity of consumer to power quality problem, namely equipment can bear the power quality problem interference still normal ability worked, and this ability is lower, and susceptibility is also higher; Equipment susceptibility is obtained by test macro, test macro comprises DUAL PWM CONVERTER AND, data acquisition system (DAS), background computer and control analysis software and equipment under test, is made the quality of power supply sensitivity curve of equipment under test by control analysis software according to feedback information.
Described method, the capture range of the power consumer quality of power supply technical data that step S1 determines comprises, the Data Collection of the Data Collection of voltage dip and short interruptions, the Data Collection of harmonic wave, imbalance of three-phase voltage, the Data Collection of voltage fluctuation and flicker, the Data Collection of voltage deviation, the Data Collection of frequency departure; The electrical equipment being in susceptibility district is carried out to the collection of quality of power supply technical data, the electrical equipment not in susceptibility district is without the need to carrying out Data Collection.
Described method, the quality of power supply technical data of the required collection that step S2 determines, comprises equipment account data and quality of power supply measurement data, different power consumer power quality data all needs collecting device account data, and equipment account packet draws together electrical equipment nominal parameter and electrical equipment delivery test parameter, quality of power supply measurement data is then different according to the difference of the capture range of different power consumer power quality data, the measurement data of voltage dip and short interruptions comprises event time, voltage magnitude, duration, the measurement data of harmonic wave comprises monitoring time, electric pressure, benchmark capacity of short circuit, A phase, B phase, the fundamental voltage of C phase, fundamental current, 2 to 25 subharmonic voltage containing ratios, 2 to 25 subharmonic current containing ratios, the measurement data of imbalance of three-phase voltage comprises non-equilibrium among three phase voltages, the measurement data of voltage fluctuation and flicker comprises voltage effective value, flickering value index time long, the measurement data of voltage deviation comprises the upper deviation and lower deviation, the measurement data of frequency departure comprises frequency values.
Described method, simulation calculation method described in step S3 refers to the actual parameter utilizing electric system, various failure message is obtained by simulation calculation, these failure messages are utilized to carry out concrete electromagnetic transient simulation, obtain the concrete situation of this custom power quality problem, ultimate analysis statistics obtains a series of probability levels of system;
Simulation calculation method idiographic flow comprises:
1) statistics and collecting device account data;
2) according to the common coupling node electric network data read in, set up Simulation Calculation, carry out Electromagnetic Simulation calculating;
3) simulation analysis is carried out to the sample that simulation produces, obtain the quality of power supply measurement data of sensitive load point;
4) judge whether to obtain step S2) determined all quality of power supply technical data, if be "Yes", process ends; If be "No", return step 2).
Described method, the measurement method of step S3 refers to: adopt and comprise power quality analyzer, digital power meter power quality monitoring device access common coupling node or consumer side, is imported or real-time Transmission obtains measured value and carries out statistical study by off-line;
Measurement method idiographic flow comprises:
1) at load bus installing equipment for monitoring power quality, or existing monitoring device and supervisory system is utilized;
2) statistics and collecting device account data;
3) measurement data of each Nodes generation quality of power supply event in the assessment phase is recorded;
4) power quality standard is utilized to judge and category measurement data.
5) every power quality index of statistical system.
Described method, step S4 comprises the method that collected quality of power supply technical data processes and sets up electrical energy power quality disturbance detail list, sets up power quality index monitoring year statistical form.
Described method, the electrical energy power quality disturbance detail list of step S4 comprises the information that the disturbance type of disturbance, event time, position, monitoring point, voltage magnitude, duration and localization of fault occur in monitoring point in statistics 1 year.
Described method, the power quality index monitoring year statistical form of step S4 comprises statistical monitoring position A phase, B phase, the fundamental voltage of C phase, fundamental current, 2 to 25 subharmonic voltage containing ratios, 2 to 25 subharmonic current containing ratios, and maximal value, mean value, minimum value and 95% probable value that frequency, non-equilibrium among three phase voltages, long-time flickering, the upper deviation, lower deviation occurred within 1 year statistics phase.
Advantage of the present invention: the invention provides a kind of power consumer power quality data collection method based on economic evaluation, specify that the required data of collecting of assessment quality of power supply loss, the Data Collection of power consumer before carrying out power quality problem loss appraisal can be directed concretely, and propose practicable Data Collection means, and collect the disposal route of data.The method step is clear, and method is clear and definite, greatly facilitates user to carry out quantitative evaluation to the economic loss that power quality problem causes.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of power consumer power quality data collection method based on economic evaluation.
Accompanying drawing 2 is simulation calculation method collection quality of power supply technical data flow process.
Accompanying drawing 3 is measurement method collection quality of power supply technical data flow process.
Embodiment
The invention provides a kind of power consumer power quality data collection method based on economic evaluation, the method specify that the required data of collecting of assessment quality of power supply economic loss, propose practicable Data Collection means, and collect the disposal route of data, the Data Collection of power consumer before carrying out power quality problem loss appraisal can be directed concretely.Power quality data based on economic loss is collected, and has a direct impact the Economic loss evaluation that power consumer causes due to power quality problem.The method, by carrying out detailed decomposition, conclusion and summary to power consumer power quality data, proposes Data Collection scope and disposal route comprehensively and accurately, can be the loss that power consumer qualitative assessment causes due to power quality problem and lays the foundation.
The present invention is described in further detail below in conjunction with concrete enforcement.
Based on a power consumer power quality data collection method for economic evaluation, mainly comprise following steps:
S1) determine that user oriented power quality problem is classified, with consumer to the susceptibility of electrical energy power quality disturbance for foundation, specify the capture range of power consumer power quality data;
S2) in the power consumer power quality data based on economic evaluation is collected, according to the difference of data function, data to be collected can be divided into two classifications, i.e. technical data and economic datas.Wherein, technical data is mainly used in determining the technical parameter of the quality of power supply and the impact on user thereof, and economic data mainly comprises the financial aspect data such as price, cost and the general expenses related in research;
S3) according to the characteristic of the quality of power supply institute coverage of different power consumer, required quality of power supply technical data of collecting is determined;
S4) for the actual conditions of power consumer, simulation calculation method or measurement method is adopted to collect quality of power supply technical data;
S5) for the power consumer Influence of production situation that power quality problem causes, quality of power supply financial cost is divided into and produces outage cost and produce non-outage cost.For user, accurate and the complete basis being quality of power supply financial cost and assessing of cost structure, directly affect accuracy and the confidence level of result.The formation of cost and the consequence of the quality of power supply closely bound up.Produce the difference of consequence according to the quality of power supply, set up the cost model produced and interrupt and do not produce interruption respectively;
S6) user investigation method is adopted to carry out the collection of quality of power supply economic data;
S7) power quality data collected by statistical treatment, the production loss assessment that the power quality problem for power consumer causes lays the foundation.
Described method, the quality of power supply technical data of described step S3 is divided into again event mode quality of power supply technical data and continuous type quality of power supply technical data.The event mode quality of power supply refers to the electrical energy power quality disturbance phenomenon occurred suddenly.Its key character shows as voltage or electric current short time its ratings of substantial deviation or ideal waveform.Event mode quality of power supply technical data collects the Data Collection comprising voltage dip and short interruptions.The continuous type quality of power supply refers to the electrical energy power quality disturbance phenomenon occurred continuously, and any instant on a timeline such as root-mean-square valve, frequency, phase differential etc. that its key character shows as voltage or electric current is always in the change that size occurs.Continuous type quality of power supply technical data collects the Data Collection, the unbalanced Data Collection of voltage and current, the Data Collection of voltage fluctuation and flicker, the Data Collection of voltage deviation, the Data Collection of frequency departure that comprise harmonic wave.
Described method, the quality of power supply technical data collection method of described step S4, wherein simulation calculation method refers to the actual parameter utilizing electric system, various failure message is obtained by simulation calculation, these failure messages are utilized to carry out concrete electromagnetic transient simulation, obtain the concrete situation of this custom power quality problem, ultimate analysis statistics obtains a series of probability levels of system.
Described method, in the quality of power supply technical data collection method of described step S4, wherein measurement method refers to by recording a series of electric energy problem, is a record, carries out event evaluation, carry out event evaluation to whole system to a node with an event.Generally, the measured value obtaining one-year age is at least needed to carry out analysis and assessment to by actual measurement mode to electricity quality evaluation.After statistical study, also can obtain probability and the frequency of each power quality problem generation of user.
Described method, the production of described step S5 is interrupted and not produce the cost model concrete meaning of interruption as follows:
Producing outage cost model is:
1) loss due to spoiled work data, mainly comprise the rehabilitation expense data can repairing waste product, the cost data of unrepairable waste product; The rehabilitation expense wherein can repairing waste product comprises direct labor's expense, direct material expense and manufacturing expense.
2) idle cost expense, mainly comprises the data such as direct pay, manufacturing expense, employee welfare cost.
3) production loss.
4) cost data is restarted.
5) equipment cost expense, mainly comprises the data such as device damage replacement cost and repairing expense.
6) other costs.
7) cost of saving, mainly comprises the electricity charge and the data such as the unpaid wage of transient worker that reduce and pay.
Producing non-outage cost model is:
1) equipment cost, mainly comprises the cost of repairs and equipment premature aging depreciation cost.
2) loss due to spoiled work.
3) production loss, mainly comprises production and remedies the data such as expense, loss of income, substandard products loss of income.
4) extra fuel power takes.
5) other costs.
Described method, the user investigation method of described step S6 is the impact being subject to certain power quality problem after first supposing user, then estimating user loss in this case.The method can unrestricted choice sample, directly contacts sample, ensures the accuracy of result.
The present invention is described in further detail below in conjunction with embodiment.
The present invention relates to a kind of power consumer power quality data collection method based on economic evaluation.This method of data capture, for user oriented quality of power supply economic evaluation, by the user's production loss classification caused power quality problem, is analyzed desired data type, is listed the power consumer cost allowance that power quality problem causes in detail.And the technical data collection method needed for assessment of loss is analyzed, analyze from emulated computation method and measurement method two kinds of collection methods respectively, wherein, emulated computation method is mainly for the power consumer not installing electric energy quality monitoring system; Measurement method is mainly for the power consumer installing electric energy quality monitoring system.
The inventive method clear thinking, content is forward-looking, can direct the Data Collection of power consumer before carrying out power quality problem loss appraisal concretely, for further economic evaluation lays the foundation.
The technical solution adopted in the present invention comprises the following steps:
S1) determine that user oriented power quality problem is classified, with consumer to the susceptibility of electrical energy power quality disturbance for foundation, specify the capture range of power consumer power quality data;
S2) in the power consumer power quality data based on economic evaluation is collected, according to the difference of data function, data to be collected can be divided into two classifications, i.e. technical data and economic datas.Wherein, technical data is mainly used in determining the technical parameter of the quality of power supply and the impact on user thereof, and economic data mainly comprises the financial aspect data such as price, cost and the general expenses related in research;
S3) according to the characteristic of the quality of power supply institute coverage of different power consumer, required quality of power supply technical data of collecting is determined;
S4) for the actual conditions of power consumer, simulation calculation method or measurement method is adopted to collect quality of power supply technical data;
S5) for the power consumer Influence of production situation that power quality problem causes, quality of power supply financial cost is divided into and produces outage cost and produce non-outage cost.For user, accurate and the complete basis being quality of power supply financial cost and assessing of cost structure, directly affect accuracy and the confidence level of result.The formation of cost and the consequence of the quality of power supply closely bound up.Produce the difference of consequence according to the quality of power supply, set up the cost model produced and interrupt and do not produce interruption respectively;
S6) user investigation method is adopted to carry out the collection of quality of power supply economic data;
S7) power quality data collected by statistical treatment, the production loss assessment that the power quality problem for power consumer causes lays the foundation.
The present invention is described in further detail below in conjunction with accompanying drawing.
A kind of user oriented quality of power supply economical data collection method embodiment is as follows:
1. classification is clearly based on the power consumer power quality data of economic evaluation
With consumer to the susceptibility of electrical energy power quality disturbance for foundation, specify the capture range of power consumer power quality data, and data type be divided into technical data and economic data.
The technical data that need collect is as follows:
(1) collect electrical equipment account table, comprise its nominal parameter and some important delivery test data.Electrical equipment nominal parameter comprises rated capacity, rated current, rated voltage, nominal load loss, rated no-load loss, specified serviceable life, nominal operating temperature, equivalent impedance etc.Delivery test parameter comprises thermal stress coefficient, peak value to aging effects coefficient etc.
(2) Collection Events type electrical energy power quality disturbance situation, comprises the information such as disturbance type, event time, position, monitoring point, voltage magnitude, duration, localization of fault.
(3), when user produces interruption, the related economic data that need collect are as follows:
1) loss due to spoiled work data, mainly comprise the rehabilitation expense data can repairing waste product, the cost data of unrepairable waste product; The rehabilitation expense wherein can repairing waste product comprises direct labor's expense, direct material expense and manufacturing expense.
2) idle cost expense, mainly comprises the data such as direct pay, manufacturing expense, employee welfare cost.
3) production loss.
4) cost data is restarted.
5) equipment cost expense, mainly comprises the data such as device damage replacement cost and repairing expense.
6) other costs.
7) cost of saving, mainly comprises the electricity charge and the data such as the unpaid wage of transient worker that reduce and pay.
When user produces and do not interrupt, the related economic data that need collect are as follows:
1) equipment cost, mainly comprises the cost of repairs and equipment premature aging depreciation cost.
2) loss due to spoiled work.
3) production loss, mainly comprises production and remedies the data such as expense, loss of income, substandard products loss of income.
4) extra fuel power takes.
5) other costs.
2. according to user's actual conditions, determine technical data collect means, be mainly divided into simulation calculation method and measurement method.
(1) simulation calculation method is mainly for the power consumer not installing electric energy quality monitoring system, electric network data according to user PCC node carries out simulation modeling, the power quality problem probability of happening that analysis node load goes out, as year voltage dip or short interruptions number of times, voltage flicker degree etc.
(2) measurement method is mainly for the power consumer installing electric energy quality monitoring system, by analyzing the real data measured by monitoring system, and the power quality problem data in counting user assessment base period.
3. determine economical data collection means
Adopt user investigation method to collect, wherein, user investigation method is divided into again direct method and indirect method, and direct method, from user perspective, collects the data directly related with quality of power supply economic loss.Indirect rule adopts the power failure of supposition property to carry out estimated cost.
4. data analysis process pair.
For obtaining result accurately, before carrying out quality of power supply economic analysis, statistical treatment need be carried out to the data collected, ensureing validity and the accuracy of data.
(1) for event quality of power supply technical data, need be add up in the cycle with year, set up disturbance detail list.
(2) for continuity quality of power supply technical data, need be add up in the cycle with year, add up maximal value, mean value, minimum value and 95% probable value that in 1 year, monitoring index occurs, form power quality index monitoring year statistical form.
(3) for quality of power supply economic data, be add up in the cycle with year, and form economic loss year statistical form.
5. carry out the quality of power supply Economic loss evaluation of power consumer.
After above-mentioned quality of power supply economy collects flow process, enter the actual assessment stage, to power consumer because power quality problem carries out Economic loss evaluation.
Claims (9)
1., based on a power consumer power quality data collection method for economic evaluation, it is characterized in that comprising:
S1) determine that user oriented power quality problem is classified, with consumer to the susceptibility of electrical energy power quality disturbance for foundation, specify the capture range of power consumer power quality data;
S2) according to the capture range of different power consumer power quality data, required concrete quality of power supply technical data of collecting is determined;
S3) for the actual conditions of power consumer, simulation calculation method or measurement method is adopted to collect quality of power supply technical data;
S4) quality of power supply technical data collected by statistical treatment, the production loss assessment that the power quality problem for power consumer causes lays the foundation.
2. method according to claim 1, it is characterized in that, the susceptibility of consumer described in step S1 to electrical energy power quality disturbance refers to the sensitivity of consumer to power quality problem, namely equipment can bear the power quality problem interference still normal ability worked, this ability is lower, and susceptibility is also higher; Equipment susceptibility is obtained by test macro, test macro comprises DUAL PWM CONVERTER AND, data acquisition system (DAS), background computer and control analysis software and equipment under test, is made the quality of power supply sensitivity curve of equipment under test by control analysis software according to feedback information.
3. method according to claim 1, it is characterized in that, the capture range of the power consumer quality of power supply technical data that step S1 determines comprises, the Data Collection of the Data Collection of voltage dip and short interruptions, the Data Collection of harmonic wave, imbalance of three-phase voltage, the Data Collection of voltage fluctuation and flicker, the Data Collection of voltage deviation, the Data Collection of frequency departure; The electrical equipment being in susceptibility district is carried out to the collection of quality of power supply technical data, the electrical equipment not in susceptibility district is without the need to carrying out Data Collection.
4. method according to claim 1, is characterized in that, the quality of power supply technical data of the required collection that step S2 determines, comprises equipment account data and quality of power supply measurement data, different power consumer power quality data all needs collecting device account data, and equipment account packet draws together electrical equipment nominal parameter and electrical equipment delivery test parameter, quality of power supply measurement data is then different according to the difference of the capture range of different power consumer power quality data, the measurement data of voltage dip and short interruptions comprises event time, voltage magnitude, duration, the measurement data of harmonic wave comprises monitoring time, electric pressure, benchmark capacity of short circuit, A phase, B phase, the fundamental voltage of C phase, fundamental current, 2 to 25 subharmonic voltage containing ratios, 2 to 25 subharmonic current containing ratios, the measurement data of imbalance of three-phase voltage comprises non-equilibrium among three phase voltages, the measurement data of voltage fluctuation and flicker comprises voltage effective value, flickering value index time long, the measurement data of voltage deviation comprises the upper deviation and lower deviation, the measurement data of frequency departure comprises frequency values.
5. method according to claim 1, it is characterized in that, simulation calculation method described in step S3 refers to the actual parameter utilizing electric system, various failure message is obtained by simulation calculation, these failure messages are utilized to carry out concrete electromagnetic transient simulation, obtain the concrete situation of this custom power quality problem, ultimate analysis statistics obtains a series of probability levels of system;
Simulation calculation method idiographic flow comprises:
1) statistics and collecting device account data;
2) according to the common coupling node electric network data read in, set up Simulation Calculation, carry out Electromagnetic Simulation calculating;
3) simulation analysis is carried out to the sample that simulation produces, obtain the quality of power supply measurement data of sensitive load point;
4) judge whether to obtain step S2) determined all quality of power supply technical data, if be "Yes", process ends; If be "No", return step 2).
6. according to method according to claim 1, it is characterized in that, the measurement method of step S3 refers to: adopt and comprise power quality analyzer, digital power meter power quality monitoring device access common coupling node or consumer side, is imported or real-time Transmission obtains measured value and carries out statistical study by off-line;
Measurement method idiographic flow comprises:
1) at load bus installing equipment for monitoring power quality, or existing monitoring device and supervisory system is utilized;
2) statistics and collecting device account data;
3) measurement data of each Nodes generation quality of power supply event in the assessment phase is recorded;
4) power quality standard is utilized to judge and category measurement data.
5) every power quality index of statistical system.
7. method according to claim 1, is characterized in that, and: step S4 comprises the method that collected quality of power supply technical data processes and sets up electrical energy power quality disturbance detail list, sets up power quality index monitoring year statistical form.
8. method according to claim 7, is characterized in that: the electrical energy power quality disturbance detail list of step S4 comprises the information that the disturbance type of disturbance, event time, position, monitoring point, voltage magnitude, duration and localization of fault occur in monitoring point in statistics 1 year.
9. method according to claim 7, it is characterized in that: the power quality index of step S4 monitoring year statistical form comprises statistical monitoring position A phase, B phase, the fundamental voltage of C phase, fundamental current, 2 to 25 subharmonic voltage containing ratios, 2 to 25 subharmonic current containing ratios, and maximal value, mean value, minimum value and 95% probable value that frequency, non-equilibrium among three phase voltages, long-time flickering, the upper deviation, lower deviation occurred within 1 year statistics phase.
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Application publication date: 20150218 |