Abstract: The present invention relates to a system and method for an abnormal waveform in a power distribution system that quickly transmits abnormal waveform-related data of a large size by changing a protocol according to data size. The system for detecting an abnormal power quality waveform comprises: a plurality of RTUs for measuring abnormal waveform when a waveform measuring signal received, and transmitting an abnormal waveform using a protocol set according to the size of the abnormal waveform; an FEP for transmitting the waveform measuring signal to an RTU installed in a failure section, and receiving and storing the abnormal waveform from the RTU; a main server for transmitting the waveform measuring signal through the FEP to the RTU installed in the failure section, performing controlling to measure the abnormal waveform generated in the failure section, and receiving and displaying the abnormal waveform according to the waveform measuring signal.

Abstract: Provided are an apparatus and method for minimizing a distribution loss which reconstructs the system construction of a distribution system in consideration of section load characteristics of mutually different distribution system. The apparatus for minimizing a distribution loss which determines a loss calculation period for detecting a loss minimization time point using mutually different distribution systems, calculates loss values of mutually different distribution systems set according to each time point of the loss calculation period, and calculates a total loss value, and selects the mutually different distribution systems one by one during the loss calculation period, and calculates a loss value for specific systems of each distribution system in consideration of a change of a section load in each selected distribution system, determines a loss minimization time point using the specific system loss value of each distribution system and the total loss value.

Abstract: The present invention relates to an apparatus and method for performing adjustment to optimize the voltage for each distribution network in a power distribution system. The apparatus for adjusting a voltage in the power distribution system adjusts the voltage by switching a switch that lies on a path in the power distribution system. The apparatus determines a switch that is to become a switching target from among switches lying on the path, obtains a voltage optimization value of the determined switching target switch, selects a switch having the minimum voltage optimization value by changing the switching target switch to another switch in order to obtain the voltage optimization value, and adjusts the voltage through switching of the selected switch.

Abstract: The present invention relates to a system and method for an abnormal waveform in a power distribution system that quickly transmits abnormal waveform-related data of a large size by changing a protocol according to data size. The system for detecting an abnormal power quality waveform comprises: a plurality of RTUs for measuring abnormal waveform when a waveform measuring signal received, and transmitting an abnormal waveform using a protocol set according to the size of the abnormal waveform; an FEP for transmitting the waveform measuring signal to an RTU installed in a failure section, and receiving and storing the abnormal waveform from the RTU; a main server for transmitting the waveform measuring signal through the FEP to the RTU installed in the failure section, performing controlling to measure the abnormal waveform generated in the failure section, and receiving and displaying the abnormal waveform according to the waveform measuring signal.

Abstract: The present invention relates to an apparatus and method for performing adjustment to optimize the voltage for each distribution network in a power distribution system. The apparatus for adjusting a voltage in the power distribution system adjusts the voltage by switching a switch that lies on a path in the power distribution system. The apparatus determines a switch that is to become a switching target from among switches lying on the path, obtains a voltage optimization value of the determined switching target switch, selects a switch having the minimum voltage optimization value by changing the switching target switch to another switch in order to obtain the voltage optimization value, and adjusts the voltage through switching of the selected switch.

Abstract: Provided are an apparatus and method for minimizing a distribution loss which reconstructs the system construction of a distribution system in consideration of section load characteristics of mutually different distribution system. The apparatus for minimizing a distribution loss which determines a loss calculation period for detecting a loss minimization time point using mutually different distribution systems, calculates loss values of mutually different distribution systems set according to each time point of the loss calculation period, and calculates a total loss value, and selects the mutually different distribution systems one by one during the loss calculation period, and calculates a loss value for specific systems of each distribution system in consideration of a change of a section load in each selected distribution system, determines a loss minimization time point using the specific system loss value of each distribution system and the total loss value.

Abstract: Disclosed herein is a method and system for universally encrypting and decrypting a transaction which is a functional unit in a power network, while reducing a system load. When a transmitting node encrypts a transaction, the serial number of the transaction corresponding to each piece of data included in the transaction is present, and data is selected either using a predetermined criterion or randomly, and is then encrypted. The transaction serial number is added to the encrypted data. A receiving node selects data to be decrypted using the transaction serial number or a predetermined criterion. Through this operation, encryption has been conducted from the standpoint of the transaction, but only part of the data is encrypted based on a probability from the standpoint of the data, so that a system load is reduced, thus enabling efficient encryption and decryption technologies to be implemented.

Abstract: An electronic power-measurement device with intelligent agent includes a power measurement unit, an intelligent agent and a communication unit. The device can commonly assess data necessary for works, as an intelligent agent is mounted on the electronic power-measurement device, although the manufacturers of the devices and hardware structure based on types of the devices are different from each other. Also, the device can select only data suitable to a high level service and can selectively assess thereto, in order to minimize extraction of unnecessary data when assessing data necessary for works, as the entire data structure is previously designed in tree form, such that each step of the tree can be used as address assess to corresponding data.

Abstract: The present invention relates to a remote meter reading system using a grouped data structure. The central processing unit of the electronic electric power meter collects the data having similar function and groups the same. Each group is classified into main items, and each main item is classified into sub-items and is stored in the memory apparatus, and when a data transmission request signal of the wired and wireless meter reading terminal and the remote meter reading server is inputted in accordance with a data address system corresponding to a grouped data stored in the memory apparatus, a collecting data corresponding to the data address system that the data transmission request signal represents is selected, and is transmitted to the wired and wireless meter reading terminal and the remote meter reading server, respectively.

Abstract: The present invention relates to a remote meter reading system using a grouped data structure. The central processing unit of the electronic electric power meter collects the data having similar function and groups the same. Each group is classified into main items, and each main item is classified into sub-items and is stored in the memory apparatus, and when a data transmission request signal of the wired and wireless meter reading terminal and the remote meter reading server is inputted in accordance with a data address system corresponding to a grouped data stored in the memory apparatus, a collecting data corresponding to the data address system that the data transmission request signal represents is selected, and is transmitted to the wired and wireless meter reading terminal and the remote meter reading server, respectively.

Abstract: Disclosed is a real-time charging electronic watt-hour meter, which includes an electric power sensor for sensing the quantity of electric power used, a card reader into/from which a prepayment card is inserted/ejected, and a rate charging processor for calculating the power rate using the quantity of power used and a predetermined charging program and for deducting the power rate from the amount of the prepayment card, thereby charging the power rate in real time.