Abstract: According to one embodiment, an energy storage battery includes: a plurality of cells; an acquirer to acquire measured values of state amounts of the cells; a first parameter calculator to calculate first parameters for evaluating the cells, based on the measured values; and a communicator to transmit the first parameters to a monitoring controller via a communication network.

Abstract: In formulating of a power generation operation schedule to a power grid network including multiple power plants and transformer stations, and, multiple batteries installed in association therewith, an operation planning system stores in advance power generation basic unit information of the power plant, and derivation information of the stored energy in the battery. Power generation basic unit information of the battery where power generation basic unit of the stored energy is added is set based on the power generation basic unit information of the power plant and the derivation information of the stored energy. While selecting a power generation facility from the power plants and the batteries in an order of a smaller value indicated by the power generation basic unit information, the power generation quantity of the selected power generation facility is added to a total power generation quantity until the total power generation quantity matches a demand quantity.

Abstract: According to one embodiment, a storage-battery evaluation device includes: a data generator and a deterioration evaluator. The data generator generates a plurality of data items including charge amounts and voltage values of an energy storage device based on current values and the voltage values measured from the energy storage device, the energy storage device being subjected to charge/discharge control in accordance with charge/discharge command values. The deterioration evaluator evaluates a deterioration state of the energy storage device based on a distribution of the voltage values included in the data items the charge amounts of which belong to a first charge-amount range when it is detected that a distribution of first charge/discharge command values satisfies a predetermined condition, the first charge/discharge command values being the charge/discharge command values at which the data items the charge amounts of which belong to the first charge-amount range is obtained.

Abstract: A secondary battery system and a method of arranging battery modules capable of recovering and maintaining the system performance are provided. A secondary battery system includes a battery cabinet group including a plurality of battery cabinets each comprising a plurality of battery modules connected to each other, the battery module being a replacement unit, a PCS connected to the battery cabinet group and is controlling charging and discharging thereof, and a battery controller connected to the PCS. The battery controller includes a deterioration inspecting block obtaining a characteristic of the battery modules, a numbering block numbering the battery modules in an ascending order based on the characteristics, and a re-arrangement determining block determining a re-arrangement position of the battery modules in a way that the numbers given by the numbering block are in sequence in the same battery cabinet.

Abstract: According to one embodiment, a simulation-signal generation device includes a charge/discharge-condition acquirer to acquire a charge/discharge condition of an energy-storage system; a signal-characteristic-amount acquirer to acquire a plurality of charge/discharge-signal characteristic amounts for the energy-storage system; a characteristic-signal generation processor to generate a plurality of characteristic signals respectively having the plurality of charge/discharge signal characteristic amounts, based on the plurality of charge/discharge signal characteristic amounts; and a simulation-signal generator to synthesize the plurality of characteristic signals to generate a simulation signal serving as a command signal of charge/discharge for the energy-storage system.

Abstract: A storage battery management device according to an embodiment includes a chargeable/dischargeable capacity table that stores therein in advance a chargeable/dischargeable capacity corresponding to a temperature, a state of charge (SOC), a required charge rate or discharge rate, and a battery degradation rate of a secondary battery; a controller that calculates an actual chargeable/dischargeable capacity by referring to the chargeable/dischargeable capacity table based on the temperature, the SOC, the required charge rate or discharge rate, and the battery degradation rate of the secondary battery; and a communication controller that informs a host device about the calculated chargeable/dischargeable capacity of the secondary battery. Even in a storage battery system that repeats charging/discharging constantly, this configuration can correctly estimate the actual chargeable/dischargeable capacity and stably operate the storage battery system.

Abstract: According to one embodiment, there is provided a battery apparatus including a battery management device configured to receive voltages and temperatures of cells, and detection data of a current sensor, and a measuring computer configured to calculate a characteristic value of each cell or cell module, based on the detection data acquired from the battery management device at first time intervals, and to send, the acquired detection data or the calculated characteristic value to a control device at second time intervals which are longer than the first time intervals.

Abstract: A method of estimating, as the charging rate of an electricity storage system, the internal condition of the electricity storage system including plural batteries, and an internal condition estimating system utilizing that method are provided. A voltage measuring unit 3 measures voltages of all batteries 1 configuring an electricity storage system block 2. A system cell voltage determining unit 5 determines a system cell voltage that will be a reference for an estimation of the SOC value of the electricity storage system block 2 based on the voltage value of the plural batteries 1 measured by the voltage measuring unit 3. The system cell voltage determining unit 5 obtains the system cell voltage by giving a weighting to the voltage value in accordance with the pre-calculated SOC value of the electricity storage system block 2. The system SOC estimating unit 6 estimates the SOC value of the electricity storage system block 2 based on the current flowing through the battery 1 and the system cell voltage.

Abstract: A plant operation support system of one embodiment includes a condition setting unit, a characteristic data storage unit, and a predicting unit. The condition setting unit sets a power supply amount to be supplied from the plant to an outside, and a target recovery rate of carbon dioxide to be generated by the thermal power generation facility. The characteristic data storage unit stores characteristic data representing a capability of recovering carbon dioxide by the carbon dioxide recovery facility, which varies according to operating output of the thermal power generation facility. The predicting unit predicts a fuel consumption amount in the thermal power generation facility and a recovery amount of carbon dioxide in the carbon dioxide recovery facility based on contents set by the condition setting unit and contents stored in the characteristic data storage unit.

Abstract: An electricity storage device includes a first battery stack (15), a second battery stack (11 to 14), and a case (22) that accommodates the first battery stack and the second battery stack. Each of the first battery stack and the second battery stack includes a plurality of cells (151) that are aligned and the second battery stack is placed under the first battery stack. The supporting member (80) that supports the first battery stack is placed between the first battery stack and the second battery stack and is fixed to the case.

Abstract: It is left to a communication terminal side to judge whether to switch communication, and appropriate switching is not performed if a communication terminal does not have a function to switch communication based on the quality of communication. A communication apparatus comprises: a data signal transmitting unit that transmits a data signal to a communication terminal; a control signal transmitting unit that transmits a control signal for establishing communication with the communication terminal; and an area control unit that restricts, to a partial area within a communication possible area that a radio wave including the data signal can reach, a communication establishment possible area that a radio wave including the control signal can reach.

Abstract: Synchronous measuring terminals 5 synchronously measure phasor quantity D101 of a voltage/current at respective measurement points 1 and 2. A data-set creating block 91 of a short-circuit capacity monitoring device 7 creates, for each measurement cycle ?t, a data set D102 containing n pieces of data based on the phasor quantities D101 of voltage and current. A phase correcting block 92 performs a phase correction on the phasor quantity using the data set D102 to create a data set D102?, and a backward impedance estimating block 93 estimates a backward impedance D103 using the data set D102?.

Abstract: In formulating of a power generation operation schedule to a power grid network including multiple power plants and transformer stations, and, multiple batteries installed in association therewith, an operation planning system stores in advance power generation basic unit information of the power plant, and derivation information of the stored energy in the battery. Power generation basic unit information of the battery where power generation basic unit of the stored energy is added is set based on the power generation basic unit information of the power plant and the derivation information of the stored energy. While selecting a power generation facility from the power plants and the batteries in an order of a smaller value indicated by the power generation basic unit information, the power generation quantity of the selected power generation facility is added to a total power generation quantity until the total power generation quantity matches a demand quantity.

Abstract: A power supply curve matching one of the patterns of a demand curve stored in advance is created by combining power generation quantities of various power sources. An environmental load index to a supply quantity indicated by the supply curve is calculated based on environmental load information stored in advance. Next, reducible quantity information for each power consumption reduction characteristic of each consumer is stored in advance, a necessary reduction quantity to cause the supply curve to match a predetermined curve is calculated. A reducible supply quantity is calculated based on reducible quantity information, and a reducible index obtained by dividing the reducible supply quantity by the necessary reduction quantity is calculated. Next, the supply curve is adjusted until it is determined that both environmental load index and the reducible index are within respective certain ranges.

Abstract: According to one embodiment, there is provided a power generation facility information management system including a power generation variation information analysis unit configured to analyze information about the form of a stop of power generation, and information about the form of a variation in the power generation amount, thereby analyzing the possibility of reduction of an environmental impact caused by the power generation. The system includes a calculation unit configured to calculate the reduction amount of the environmental impact when the stop in an avoidable power generation stop period is assumed to be avoided and calculate the reduction amount of the environmental impact when the avoidable variation is assumed to be avoided, based on the analysis result.

Abstract: According to one embodiment, there is provided an executive monitoring and control system for monitoring and controlling a power generation output of each dispersed power source and a load of each demand facility in a smart grid or a micro grid. An abnormal-time interchange procedure formation unit forms, when a fault occurs in a system, an interchange procedure of matching the total power generation output amount of dispersed power sources with the total loading of demand facilities, by using at least the information acquired by the measurement value monitoring unit and the information managed by the customer information management unit.

Abstract: An electric power planning apparatus is provided. The apparatus has an initial plan creating section, a generation amount probability density distribution creating section, an economic load dispatch calculating section, and a display section. The initial plan creating section creates an initial plan based on a demand predicted value, a predicted value of a natural energy electric power source power generation output amount, and electric power source equipment data. The generation amount probability density distribution creating section creates a probability density distribution using fluctuation bands of the demand and of the natural energy electric power source power generation output amount. The economic load dispatch calculating section calculates an output allocation based on the initial plan and the probability density distribution to create a prediction distribution of a power generation output of the controllable electric power source. The display section displays the prediction distribution.

Abstract: A power supply and demand control apparatus includes a power generation planning unit that calculates one day's power outputs of multiple distributed power sources and a power flow target of a linking point to another power system, a long-cycle control unit having a long-cycle supply-demand balancing control unit that performs control every few minutes so as to ensure the supply-demand balancing of electric energy in a given amount of time at the linking point in order to perform control for making deviations between total power output calculated by the power generation planning unit and load power in the power system constant, and a short-cycle control unit having a short-cycle supply-demand balancing control unit that performs similar control every few seconds. In the power supply and demand control apparatus, the long-cycle control unit and short-cycle control unit perform the supply-demand balancing control in a hierarchical fashion to determine output assignments of the distributed power sources.

Abstract: According to one embodiment, the economical load dispatcher calculates a discharging threshold value and a charging threshold value based on a discharging unit price of and a charging and discharging efficiency of the secondary battery and further calculates output allocations of the generators and secondary battery such that the secondary battery is discharged when incremental fuel costs of the generators are higher than the discharging threshold value, whereas the secondary battery is charged when incremental fuel costs of the generators are lower than the charging threshold value.

Abstract: An electricity storage device includes a first battery stack (15), a second battery stack (11 to 14), and a case (22) that accommodates the first battery stack and the second battery stack. Each of the first battery stack and the second battery stack includes a plurality of cells (151) that are aligned and the second battery stack is placed under the first battery stack. The supporting member (80) that supports the first battery stack is placed between the first battery stack and the second battery stack and is fixed to the case.