CN105932700B - A method of the three-phase imbalance based on cloud service system is administered - Google Patents

A method of the three-phase imbalance based on cloud service system is administered Download PDF

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Publication number
CN105932700B
CN105932700B CN201610480396.3A CN201610480396A CN105932700B CN 105932700 B CN105932700 B CN 105932700B CN 201610480396 A CN201610480396 A CN 201610480396A CN 105932700 B CN105932700 B CN 105932700B
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voltage
current
phases
data
cloud service
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CN105932700A (en
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王虎
何荣富
张晓毅
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STATE GRID JIBEI ENERGY-SAVING SERVICES Co Ltd
State Grid Corp of China SGCC
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STATE GRID JIBEI ENERGY-SAVING SERVICES Co Ltd
State Grid Corp of China SGCC
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50Arrangements for eliminating or reducing asymmetry in polyphase networks

Abstract

The method for the three-phase imbalance improvement based on cloud service system that the present invention provides a kind of, includes the following steps:Acquire the current data and voltage data in power grid;The electric current and voltage data are transmitted to cloud service system;The cloud service system handles the electric current and voltage data, generates three-phase imbalance resolution library;Corresponding capacitance and inductance are linked into circuit according to three-phase imbalance resolution library.The formulation of three uneven resolutions is carried out based on nearest data by cloud service system, ensure regulation effect, in turn avoid the multiple switching of capacitance and inductance, extend the service life of capacitance and inductance, by the normalization processing and the calculating of degree of unbalancedness to gathered data, the accuracy of three uneven resolutions is improved.

Description

A method of the three-phase imbalance based on cloud service system is administered
Technical field
The present invention relates to three-phase imbalances to administer field, specifically, is related to a kind of three-phase based on cloud service system not Balance the method administered.
Background technology
Three-phase imbalance:Three-phase imbalance problem can cause the additional fever of electric rotating machine, cause with negative sequence component to be to open A variety of protective devices of dynamic component malfunction, while shortening the service life of electrical equipment;Apparatus of load rate is low, can cause to set The waste of standby capacity resource.But low-pressure system is other than reasonable distribution load as possible for a long time, almost without having for what row The means of effect are rationally adjusted.
Three-phase imbalance is always one of the main problem for perplexing power supply unit, causes transformer loss and line loss big Width increases, and larger harmful effect is caused to low voltage electric network operation and electrical equipment.
Existing three-phase imbalance is administered generally accesses the electrical appliance progress of each phase by improving transformer or adjustment, adjusts Whole efficiency is low, and regulation effect is poor.
Invention content
The present invention is the defects of for the above-mentioned prior art, it is proposed that following technical solution.
A method of the three-phase imbalance based on cloud service system is administered, and is included the following steps:
S1, the current data in acquisition power grid and voltage data;
S2, the electric current and voltage data are transmitted to cloud service system;
S3, the cloud service system handle the electric current and voltage data, generate three-phase imbalance resolution Library;
S4, corresponding capacitance and inductance are linked into circuit according to three-phase imbalance resolution library.
Further, the cloud service system includes cloud data storage layer, cloud data analysis layer and cloud service driving layer; The cloud data storage layer includes disk array, the current data for storing acquisition and voltage data;The cloud data processing Layer includes multiple processors, for storage current data and voltage data carry out normalization processing, and give at normalization Current data and voltage data after reason is to generate three-phase imbalance resolution library;The cloud service driving layer includes that number is believed Number processor, for corresponding capacitance and inductance to be linked into circuit according to three-phase imbalance resolution library.
Further, it is described acquisition power grid in current data and voltage data the specific steps are:
A establish current data file current_A, current_B of storage A phases, B phases and C phase current data respectively and current_C;
B establish voltage data file voltage_A, voltage_B of storage A phases, B phases and C phase voltage data respectively and voltage_C;
C when 0 every 1 second simultaneously acquire A phases, B phases and C phase currents data and voltage data;
The A phases of acquisition, the current data of B phases and C phases and corresponding acquisition time are respectively written into current data file by d Current_A, current_B and current_C;
The A phases of acquisition, the voltage data of B phases and C phases and corresponding acquisition time are respectively written into voltage data file by e Voltage_A, voltage_B and voltage_C.
Wherein, data acquisition time continues 48 hours, totally 172800 data collection points.
Further, the specific steps that the electric current and voltage data are transmitted to cloud service system include:
A by current data file current_A, current_B and current_C and voltage data file voltage_A, Voltage_B and voltage_C are sent to cloud service system;
Cloud service system described in b is by current data file current_A, current_B and current_C and voltage data File voltage_A, voltage_B and voltage_C are stored in cloud data storage layer.
Further, the cloud service system handles the electric current and voltage data, generates three-phase imbalance The specific steps in resolution library include:
Cloud data analysis layer described in a obtains current data file current_A, current_ from the cloud data storage layer B and current_C and voltage data file voltage_A, voltage_B and voltage_C;
B to current data file current_A, current_B and current_C and voltage data file voltage_A, Voltage_B and voltage_C carries out normalization processing, according to current data file current_A, current_B and The temporal information of current_C and voltage data file voltage_A, voltage_B and voltage_C acquire for every 20 minutes Current data and voltage data calculate average value, i.e. current data and voltage data meter to continuous every 1200 sampled points Calculate average value:
The electric current mean value of A phases is:av_CA1、av_CA2、av_CA3……av_CA144
The electric current mean value of B phases is:av_CB1、av_CB2、av_CB3……av_CB144
The electric current mean value of C phases is:av_CC1、av_CC2、av_CC3……av_CC144
The average voltage of A phases is:av_VA1、av_VA2、av_VA3……av_VA144
The average voltage of B phases is:av_VB1、av_VB2、av_VB3……av_VB144
The average voltage of C phases is:av_VC1、av_VC2、av_VC3……av_VC144
C compresses A phases, the current data of B phases and C phases and voltage data, i.e., the data that will be acquired in 48 hours It is mapped in 24 hour spaces:
The value of the electric current compression point of A phases is:Cav_CAI=(av_CA1+av_CA1+i)/2;
The value of the electric current compression point of B phases is:Cav_CBI=(av_CB1+av_CB1+i)/2;
The value of the electric current compression point of C phases is:Cav_CCI=(av_CC1+av_CC1+i)/2;
The value of the voltage compression point of A phases is:Cav_VAI=(av_VA1+av_VA1+i)/2;
The value of the voltage compression point of B phases is:Cav_VBI=(av_VB1+av_VB1+i)/2;
The value of the voltage compression point of C phases is:Cav_VCI=(av_VC1+av_VC1+i)/2;
D calculates A phases, the degree of unbalancedness of B phases and C phases:
Enable Cav_ABCi=(Cav_CAi+Cav_CBi+Cav_CCi)/3;
E generates three-phase imbalance according to the voltage compression point value of A phases, the degree of unbalancedness of B phases and C phases and A phases, B phases and C phases Resolution library is as follows:
Wherein, i is natural number, 1≤i≤72;T1, T2, T3 and T4 are the period;C1 and L1 is to be connect in T3 period domestic demands The capacitance and inductance size entered;C2 and L2 is the capacitance accessed in T4 period domestic demands and inductance size.
Further, described that corresponding capacitance and inductance are linked by electricity according to three-phase imbalance resolution library In road the specific steps are:Cloud service drive layer by digital signal processor therein in the T3 periods by the capacitance of C1 sizes It is linked into circuit with the inductance of L1 sizes;The inductance of the capacitance of C2 sizes and L2 sizes is linked into circuit in the T4 periods In;Cloud service driving layer is without action within T1 the and T2 periods.
The present invention technique effect be:By cloud service system three uneven resolutions are carried out based on nearest data Formulation, it is ensured that regulation effect in turn avoids the multiple switching of capacitance and inductance, extends the service life of capacitance and inductance, lead to Normalization processing and the calculating of degree of unbalancedness to gathered data are crossed, the accuracy of three uneven resolutions is improved.
Description of the drawings
Fig. 1 is the method that a kind of three-phase imbalance based on cloud service system of the present invention is administered.
Fig. 2 is the structure chart of the cloud service system of the present invention.
Specific implementation mode
1-2 is specifically described below in conjunction with the accompanying drawings.
Fig. 1 shows the method that a kind of three-phase imbalance based on cloud service system of the present invention is administered.
A kind of method that the three-phase imbalance based on cloud service system is administered of the present invention, includes the following steps:
S1:Acquire the current data and voltage data in power grid;
S2:The electric current and voltage data are transmitted to cloud service system;
S3:The cloud service system handles the electric current and voltage data, generates three-phase imbalance resolution Library;
S4:Corresponding capacitance and inductance are linked into circuit according to three-phase imbalance resolution library.
As shown in Fig. 2, the cloud service system includes cloud data storage layer 11, cloud data analysis layer 12 and cloud service driving Layer 13;The cloud data storage layer 11 includes disk array, the current data for storing acquisition and voltage data;The cloud number Include multiple processors according to process layer 12, for storage current data and voltage data carry out normalization processing, and give Normalization treated current data and voltage data generate three-phase imbalance resolution library;The cloud service driving layer 13 wraps Digital signal processor is included, for corresponding capacitance and inductance to be linked into circuit according to three-phase imbalance resolution library In.
Step S1 the specific steps are:
Establish current data file current_A, current_B of storage A phases, B phases and C phase current data respectively and current_C;
Establish voltage data file voltage_A, voltage_B of storage A phases, B phases and C phase voltage data respectively and voltage_C
When 0 A phases, B phases and C phase currents data and voltage data were acquired every 1 second simultaneously;
The A phases of acquisition, the current data of B phases and C phases and corresponding acquisition time are respectively written into current data file Current_A, current_B and current_C;
The A phases of acquisition, the voltage data of B phases and C phases and corresponding acquisition time are respectively written into voltage data file Voltage_A, voltage_B and voltage_C.
Wherein, data acquisition time continues 48 hours, totally 172800 data collection points.
Because the power consumption of power grid is similar with nearest history, three are formulated not using nearest 48 hours data Resolution is balanced, current transformer, voltage transformer or the electronic mutual inductor with the two function can be used to acquire Electric current and voltage data.
The specific steps of step S2 include:By current data file current_A, current_B and current_C and electricity Pressure data file voltage_A, voltage_B and voltage_C are sent to cloud service system, and the cloud service system is by electric current Data file current_A, current_B and current_C and voltage data file voltage_A, voltage_B and Voltage_C is stored in cloud data storage layer 11.
The specific steps of step S3 include:
The cloud data analysis layer 12 from the cloud data storage layer 13 obtain current data file current_A, Current_B and current_C and voltage data file voltage_A, voltage_B and voltage_C;
To current data file current_A, current_B and current_C and voltage data file voltage_A, Voltage_B and voltage_C carries out normalization processing, according to current data file current_A, current_B and The temporal information of current_C and voltage data file voltage_A, voltage_B and voltage_C acquire for every 20 minutes Current data and voltage data calculate average value, i.e. current data and voltage data meter to continuous every 1200 sampled points Calculate average value:
The electric current mean value of A phases is:av_CA1、av_CA2、av_CA3……av_CA144
The electric current mean value of B phases is:av_CB1、av_CB2、av_CB3……av_CB144
The electric current mean value of C phases is:av_CC1、av_CC2、av_CC3……av_CC144
The average voltage of A phases is:av_VA1、av_VA2、av_VA3……av_VA144
The average voltage of B phases is:av_VB1、av_VB2、av_VB3……av_VB144
The average voltage of C phases is:av_VC1、av_VC2、av_VC3……av_VC144
A phases, the current data of B phases and C phases and voltage data are compressed, i.e., reflected the data acquired in 48 hours It is mapped in 24 hour spaces:
The value of the electric current compression point of A phases is:Cav_CAI=(av_CA1+av_CA1+i)/2;
The value of the electric current compression point of B phases is:Cav_CBI=(av_CB1+av_CB1+i)/2;
The value of the electric current compression point of C phases is:Cav_CCI=(av_CC1+av_CC1+i)/2;
The value of the voltage compression point of A phases is:Cav_VAI=(av_VA1+av_VA1+i)/2;
The value of the voltage compression point of B phases is:Cav_VBI=(av_VB1+av_VB1+i)/2;
The value of the voltage compression point of C phases is:Cav_VCI=(av_VC1+av_VC1+i)/2;
Calculate A phases, the degree of unbalancedness of B phases and C phases:
Enable Cav_ABCi=(Cav_CAi+Cav_CBi+Cav_CCi)/3;
Three-phase imbalance is generated according to the voltage compression point value of A phases, the degree of unbalancedness of B phases and C phases and A phases, B phases and C phases Resolution library is as follows:
Wherein, i is natural number, 1≤i≤72;T1, T2, T3 and T4 are the period;C1 and L1 is to be connect in T3 period domestic demands The capacitance and inductance size entered;C2 and L2 is the capacitance accessed in T4 period domestic demands and inductance size.
T1, T2, T3 and T4 are that can be continuous or discrete period the period, when indicating 0-8 such as T1, T2 tables Show when 10-13,22-24, when T3 expression 8-10 and when 13-16, when T4 expression 16-22, reacted power grid different in one day Different weighing apparatus states;;The value of C1 and L1 and C2 and L2 is obtained with specific reference to net capacity, voltage class and loading condition by emulation , it can also be by the way that historical data be calculated.
Step S4 the specific steps are:Cloud service drive layer by digital signal processor therein in the T3 periods by C1 The capacitance of size and the inductance of L1 sizes are linked into circuit;The inductance of the capacitance of C2 sizes and L2 sizes is connect in the T4 periods Enter into circuit;Cloud service driving layer is without action within T1 the and T2 periods.
The solution of the present invention can power grid can normal operation when, without the improvement of three-phase imbalance, three It is administered when mutually uneven serious, it is determined that the stabilization of power grid extends capacitance and inductance for administering three-phase imbalance Service life.
It should be noted last that:Above example only illustrates and not to limitation technical scheme of the present invention, although reference Above-described embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that:It still can be to this hair It is bright to be modified or replaced equivalently, it without departing from the spirit or scope of the invention, or any substitutions, should all Cover in the scope of the claims of the present invention.

Claims (3)

1. a kind of method that three-phase imbalance based on cloud service system is administered, which is characterized in that the cloud service system includes Cloud data storage layer, cloud data analysis layer and cloud service drive layer;
The cloud data storage layer includes disk array, the current data for storing acquisition and voltage data;
The cloud data analysis layer includes multiple processors, for storage current data and voltage data carry out at normalization Reason, and normalization treated current data and voltage data are given to generate three-phase imbalance resolution library;
The cloud service driving layer includes digital signal processor, and being used for will be corresponding according to three-phase imbalance resolution library Capacitance and inductance be linked into circuit;
The method that the three-phase imbalance is administered includes the following steps:
S1, the current data in acquisition power grid and voltage data, the specific steps are:
A establish current data file current_A, current_B of storage A phases, B phases and C phase current data respectively and current_C;
B establish voltage data file voltage_A, voltage_B of storage A phases, B phases and C phase voltage data respectively and voltage_C;
C when 0 every 1 second simultaneously acquire A phases, B phases and C phase currents data and voltage data;
The A phases of acquisition, the current data of B phases and C phases and corresponding acquisition time are respectively written into current data file by d Current_A, current_B and current_C;
The A phases of acquisition, the voltage data of B phases and C phases and corresponding acquisition time are respectively written into voltage data file by e Voltage_A, voltage_B and voltage_C;
S2, the current data and voltage data are transmitted to cloud service system;
S3, the cloud service system handle the current data and voltage data, generate three-phase imbalance resolution Library, the specific steps are:
Cloud data analysis layer described in a from the cloud data storage layer obtain current data file current_A, current_B and Current_C and voltage data file voltage_A, voltage_B and voltage_C;
B to current data file current_A, current_B and current_C and voltage data file voltage_A, Voltage_B and voltage_C carries out normalization processing, according to current data file current_A, current_B and The temporal information of current_C and voltage data file voltage_A, voltage_B and voltage_C acquire for every 20 minutes Current data and voltage data calculate average value, i.e. current data and voltage data meter to continuous every 1200 sampled points Calculate average value:
The electric current mean value of A phases is:av_CA1、av_CA2、av_CA3……av_CA144
The electric current mean value of B phases is:av_CB1、av_CB2、av_CB3……av_CB144
The electric current mean value of C phases is:av_CC1、av_CC2、av_CC3……av_CC144
The average voltage of A phases is:av_VA1、av_VA2、av_VA3……av_VA144
The average voltage of B phases is:av_VB1、av_VB2、av_VB3……av_VB144
The average voltage of C phases is:av_VC1、av_VC2、av_VC3……av_VC144
C compresses A phases, the current data of B phases and C phases and voltage data, i.e., maps the data acquired in 48 hours Into 24 hour spaces:
The value of the electric current compression point of A phases is:Cav_CAi=(av_CA1+av_CA1+i)/2;
The value of the electric current compression point of B phases is:Cav_CBI=(av_CB1+av_CB1+i)/2;
The value of the electric current compression point of C phases is:Cav_CCI=(av_CC1+av_CC1+i)/2;
The value of the voltage compression point of A phases is:Cav_VAI=(av_VA1+av_VA1+i)/2;
The value of the voltage compression point of B phases is:Cav_VBI=(av_VB1+av_VB1+i)/2;
The value of the voltage compression point of C phases is:Cav_VCI=(av_VC1+av_VC1+i)/2;
D calculates A phases, the degree of unbalancedness of B phases and C phases:
Enable Cav_ABCi=(Cav_CAi+Cav_CBi+Cav_CCi)/3;
E generates three-phase imbalance according to the voltage compression point value of A phases, the degree of unbalancedness of B phases and C phases and A phases, B phases and C phases and administers Scheme base is as follows:
Wherein, i is natural number, 1≤i≤72;T1, T2, T3 and T4 are the period;C1 and L1 is to be accessed in T3 period domestic demands Capacitance and inductance size;C2 and L2 is the capacitance accessed in T4 period domestic demands and inductance size;
S4, corresponding capacitance and inductance are linked into circuit according to three-phase imbalance resolution library.
2. the method that the three-phase imbalance according to claim 1 based on cloud service system is administered, it is characterised in that:By institute It states current data and voltage data is transmitted to the specific steps of cloud service system and includes:
A by current data file current_A, current_B and current_C and voltage data file voltage_A, Voltage_B and voltage_C are sent to cloud service system;
Cloud service system described in b is by current data file current_A, current_B and current_C and voltage data file Voltage_A, voltage_B and voltage_C are stored in cloud data storage layer.
3. the method that the three-phase imbalance according to claim 1 based on cloud service system is administered, it is characterised in that:According to Three-phase imbalance resolution library by corresponding capacitance and inductance be linked into circuit the specific steps are:Cloud service drives The inductance of the capacitance of C1 sizes and L1 sizes is linked into circuit by digital signal processor therein in the T3 periods by layer; The inductance of the capacitance of C2 sizes and L2 sizes is linked into circuit in the T4 periods;Cloud service drives within T1 the and T2 periods Layer is without action.
CN201610480396.3A 2016-06-27 2016-06-27 A method of the three-phase imbalance based on cloud service system is administered Expired - Fee Related CN105932700B (en)

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