The invention discloses a multi-meter-position meter case electric energy meter phase identifying method based on data correlation. The method includes the steps: enabling a meter case monitoring unitto be powered on, comparing similarity of acquired voltage of a single-phase energy meter and three-phase voltage, and determining a belonging phase of the single-phase energy meter according to mostsimilar voltage; normally running the meter case monitoring unit, continuously comparing change trend of an acquired multi-group single-phase energy meter voltage value and three-phase voltage, and correcting the belonging phase of the single-phase energy meter according to most similar change trend. The invention further discloses a multi-meter-position meter case electric energy meter phase identifying system based on the data correlation. The system comprises a meter case monitoring unit, a multi-meter-position meter case, a three-phase switch and the single-phase energy meter. By the aidof a data correlation algorithm combining static identification and dynamic identification, online automatic identification of the single-phase energy meter phase is achieved, a single-phase energy meter power supply phase in a meter case can be automatically corrected, and more accurate electric energy meter phase identifying results are formed.

Multi-meter-position meter case electric energy meter phase identifying method and system based on data correlation

The invention relates to a station area phase identification method based on association degree. The association degree between the voltage of any single-phase electricity meter in the station area and the three-phase voltage of a total meter is calculated. The phase voltage of the total meter corresponding to the maximum correlation degree among all the correlation degrees obtained is used as thevoltage connected to a single-phase electric meter. Therefore, the platform area phase identification method based on the association degree is realized that there is no need to modify the existing station area, and there is no need to add a matching module for a concentrator and each single-phase electric meter, and only need to upgrade a program designed based on the program in the concentrator, the accurate identification of the voltages connected to the single-phase electric meters in the station area is completed, which effectively saves costs of realizing the station area phase identification.

Station area phase identification method based on association degree

The invention relates to a courts phase identification method based on linear regression processing. The method comprises the following steps: obtaining a three-phase voltage data actual value set ofa collected total meter and a voltage data actual value set of any single-phase electricity meter, and then establishing a simple regression equation set using voltage data of the any single-phase electricity meter as dependent variables and using three-phase voltage data actual values of the collected total meter as independent variables respectively; respectively obtaining interception values and slope values of equations according to the established simple regression equation set and a three-phase voltage data average value of the total meter, obtaining specific simple regression equations,calculating an accumulated value of difference squares between a voltage data theoretical value of the single-phase electricity meter and the voltage data actual value of the single-phase electricitymeter, and using a voltage phase corresponding to the accumulated value with the minimum numerical value as a voltage level connected to the any single-phase electricity meter. The voltage level connected to each single-phase electricity meter in the courts can be accurately identified just by upgrading a program designed based on the scheme without changing the existing courts.

Courts phase identification method based on linear regression processing

The invention relates to a zone area camera recognition method. The method comprises the following steps: correspondingly obtaining a general ammeter three-phase voltage data change tendency sequenceand a single-phase ammeter voltage data change tendency sequence after acquiring the collected three-phase voltage data actual value set of the total ammeter and the voltage data actual value set of selected any single-phase ammeter, and then obtaining a change tendency goodness of fit sequence for representing the change consistency of the total ammeter each phase voltage and the single-phase ammeter voltage change, and taking the total ammeter voltage phase corresponding to the change tendency goodness of fit sequence nearest to the numerical value 1 in the change tendency goodness of fit sequence corresponding to each phase voltage in the total ammeter as the voltage phase connected with the single-phase ammeter. The accurate recognition on the voltage phase connected with each single-phase ammeter in the zone area can be accomplished without changing the existing the zone area and adding an adaptive module for a concentrator and each single-phase ammeter, and the cost for identifying the single-phase ammeter phase recognition in the zone area is effectively saved.

Zone area camera recognition method

The application relates to a phase recognition method and device for a residential single-phase electric energy meter and a computer device. The method includes: acquiring the single-phase change instantaneous power of a residential single-phase electric energy meter; acquiring three-phase instantaneous powers of a three-phase electric energy meter of the courts according to a power collection time of the single-phase change instantaneous power; identifying three-phase power variation parameters of the three-phase instantaneous powers and identifying single-phase power variation parameters ofthe single-phase variation instantaneous power; and according to the single-phase power variation parameters and the three-phase power variation parameters, determining a mounting phase of the residential single-phase electric energy meter at the three-phase electric energy meter of the courts. With the provided method, no extra phase recognition device or chip is needed; the phase recognition efficiency of the single-phase electric energy meter can be improved and the phase recognition cost can be saved; and the phase identification determination of the residential single-phase electric energy mete can be realized.

Phase recognition method and device for residential single-phase electric energy meter and computer device

The invention relates to a transformer area phase identification method based on synchronous sampling of a concentrator and an electricity meter. The concentrator is synchronized with a collector, theconcentrator and the collector do not include time delay almost, and thus, after that the concentrator issues an ordered sampling instruction to the collector, the concentrator and the collector start data collection in the same ordered sampling time point, and the accuracy of the transformer area phase identification is improved; three-phase voltage data, collected by the concentrator, of a master meter of a transformer area and voltage data, obtained by the concentrator from the collector, of the single-phase electricity meter are processed to obtain standard deviations of the voltage of the single-phase electricity meter relative to phases of voltages of the master meter of the transformer area, and the phase connected to the single-phase electricity meter is determined according to whether voltage fluctuation curves between the single-phase electricity meter and the three phases of the master meter of the transformer area are similar on the basis of the three standard deviations.The phase identification rate of the single-phase electricity meter in the transformer area can be improved.

Ru Liming

Papers

Transformer area phase identification method based on synchronous sampling of concentrator and electricity meter