摘要:
The method of controlling a battery storing electric power generated by a power generator generating electric power using renewable energy comprises detecting an amount of electric power generated by the power generator at a first time and a second time that is prior to the first time; computing a rate of increase or decrease of the amount of electric power between the first time and the second time; computing a target output value for the electric power to be supplied to an electric power transmission system based on the rate, and supplying to the electric power transmission system electric power corresponding to the target output value from at least one of the power generator and the battery.
摘要:
The method of controlling a battery storing electric power generated by a power generator generating electric power using renewable energy comprises detecting an amount of electric power generated by the power generator at a first time and a second time that is prior to the first time; computing a rate of increase or decrease of the amount of electric power between the first time and the second time; computing a target output value for the electric power to be supplied to an electric power transmission system based on the rate, and supplying to the electric power transmission system electric power corresponding to the target output value from at least one of the power generator and the battery.
摘要:
A power management system is configured to comprise: a plurality of power management units (32, 36, 38, 40, 42) that divide power information about a whole facilities complex into power information about a plurality of management areas, and each of which takes partial charge and manages power information about the area pertaining thereto; and a system controller (30) that is connected to each of the power management units (32, 36, 38, 40, and 42) through a communication element, and that is for conducting power management of the whole facilities complex. When failure information is detected from the power information, an alarm signal is output by the system controller (30), and details about the failure information, which are located at a power management unit (32) for a power apparatus, are transmitted to the other power management units via a server (200).
摘要:
A first line includes a switching element and is electrically coupled to a branch point and an external load which is electrically connectable to a battery parallel-operation circuit. A second line includes a resistive element, and is electrically coupled to the external load and the branch point. The first line and the second line are each provided in a plurality. The plural first lines are connected in parallel to one another, and the plural second lines are connected in parallel to one another. The branch points are electrically coupled respectively to plural external, connectable battery units.
摘要:
Provided is a power management system capable of controlling charge and discharge of storage batteries according to power requirement of load even when handling electric power of large scale. A system controller receives load-related information data including the power requirement of load and storage battery-related information data including a state of a storage battery assembly including multiple storage batteries and creates an overall charge-discharge control instruction for the entire power management system based on the load-related information data and the storage battery-related information data. A hierarchical charge-discharge control apparatus receives the overall charge-discharge control instruction from the system controller and performs charge-discharge control of the multiple storage batteries, classified into hierarchical levels, on a hierarchical level basis.
摘要:
A master controller of a battery charge and discharge control apparatus is a device performing charge and discharge control on a group of a predetermined number of battery arrays, the battery arrays being connected together in parallel. The master controller acquires an entire charge or discharge instruction intended for the entire battery array group, starts charging or discharging each of the battery arrays at a uniform charge or discharge power value, acquires a charge or discharge status of each of the battery arrays after the beginning of the charge or discharge and compares the charge or discharge status with a predetermined charge or discharge set value for the entire battery array group, and changes the charge or discharge power value of each of the battery arrays based on a result of the comparison.
摘要:
The method of controlling a power generator generating electric power using renewable energy and a battery storing electric power generated by the power generator, comprising: acquiring data on an amount of electric power generated by the power generator at predetermined time intervals over a sampling period, the data being acquired as electric signals; computing a target output value for the electric power to be supplied to an electric power transmission system based on the data on the amount of electric power generated by the power generator; supplying to the electric power transmission system electric power equal to the target output value from at least one of the power generator and the battery; determining a fading condition of the battery; and varying the sampling period in accordance with the fading condition of the battery.
摘要:
To provide a power supply system equipped with a storage battery assembly including a plurality of storage battery control units, the power supply system being configured such that a group of the storage battery control units, which are selected from the storage battery control units, and which have output voltages within a predetermined voltage range, are first connected to the parallel connection line, and such that the voltage range is set so as to maximize the number of the storage battery control units having output voltages within the voltage range.
摘要:
A transparent conductive film is formed on a glass substrate covering substantially its entire surface area and this transparent conductive film is divided into a plurality of transparent conductive parts per each photoelectric converting region. The photoelectric converting region is of a nearly rectangular shape, and accordingly, in order to divide the transparent conductive film into respective transparent conductive film parts, a laser beam is irradiated along all longitudinal and lateral sides of the rectangle. Thereby, the transparent conductive film parts corresponding to the photoelectric converting regions are formed as island regions. Semiconductor film parts are formed on the transparent conductive film parts divided into island regions corresponding to respective photoelectric converting regions and subsequently aluminum film parts are formed on these semiconductor film parts. Transparent conductive film parts are electrically connected to aluminum film parts of adjacent photoelectric converting regions. Thus, a photovoltaic device is manufactured wherein a plurality of photoelectric converting regions are formed on the substrate and respective photoelectric converting regions are connected in a series fashion.
摘要:
A charge/discharge control device capable of increasing the lifetime of a storage portion while suppressing effects of fluctuation in power generated by a power generator on a power grid is provided. This charge/discharge control device is so formed as to start charge/discharge control of the storage portion if an amount of change in power detected by a power detection portion detecting power passing through a prescribed portion of a line between the power generator and the power grid is at least a prescribed amount of change when the detected power changes from first power to second power while the detected power does not return to power in the vicinity of the first power from the second power within a first period from a time point when the detected power changes from the first power to the second power.