摘要:
System and methods are disclosed to handle power imbalance in one or more distributed generation (DG) units: detecting islanding at time t1; selecting Phasor Measurement Unit (PMU) measurements during a pre-defined time window [t1-τ, t1]; checking the time window for an abrupt voltage change; if no sudden change of voltage is detected, determining an average value of sPMUt between t1-τ and t1 and using the average as a best estimate of a system power imbalance; if a sudden change of voltage is detected at time instant t2, determining the average value of sPMUt between t1-τ and t2 and using the average as a best estimate of the system power imbalance; and adjusting a power reference of the DG units based on the best estimated system power imbalance.
摘要:
System and methods are disclosed to handle power imbalance in one or more distributed generation (DG) units: detecting islanding at time t1; selecting Phasor Measurement Unit (PMU) measurements during a pre-defined time window [t1-τ, t1]; checking the time window for an abrupt voltage change; if no sudden change of voltage is detected, determining an average value of sPMUt between t1-τ and t1 and using the average as a best estimate of a system power imbalance; if a sudden change of voltage is detected at time instant t2, determining the average value of sPMUt between t1-τ and t2 and using the average as a best estimate of the system power imbalance; and adjusting a power reference of the DG units based on the best estimated system power imbalance.
摘要:
A virtual power infrastructure for managing distribution of power to a plurality of power demanding units from a plurality of power generators includes a demand manager having logical descriptions of the power demanding units, in which the demand manager is configured to determine power load demands of the power demanding units using the logical descriptions of the power demanding units, and a capacity manager having logical descriptions of the power generators. The capacity manager is configured to determine allocation of power capacity supplied to the power generators from one or more of the power generators to meet the power load demands of the power demanding units, while satisfying one or more predetermined constraints associated with at least one of the power demanding units and the power generators.
摘要:
Systems and methods to condition air are disclosed. An example system includes a desiccant heat transfer device to supply conditioned air to a facility, an air intake to receive air to be conditioned via the desiccant heat transfer device, and a make-up exhaust to provide exhaust air from a heat dissipating device in the facility to provide heated air to reactivate the desiccant heat transfer device.
摘要:
An apparatus for managing an infrastructure having one or more three-dimensional (3D) packages and a plurality of cooling resource actuators, each of the 3D packages including a plurality of heat sources, includes a heat source manager configured to determine heat load profiles of the heat sources. The apparatus also includes a cooling resource manager configured to determine capabilities of the plurality of cooling resource actuators to meet heat load demands of the plurality of heat sources based on the heat load profiles of the plurality of heat sources and an integrated thermal manager configured to match the capabilities of the plurality of cooling resource actuators to the heat load profiles of the plurality of heat sources.
摘要:
To perform time slice-based visual prediction, a weighted moving aggregate of data values in a data set is calculated over previous time slices to predict data values based on interactive user input. A visual accuracy indicator is generated for display to indicate a quality of prediction of data values at different times. A visualization presents data values from the data set and the predicted data values, where the data values from the data set and the predicted data values are represented as corresponding cells.
摘要:
A method for automated design of an IT infrastructure, includes a) identifying IT equipment to support services to be provided to meet one or more user requirements; b) identifying one or more auxiliary infrastructures to meet requirements of the identified computer equipment; c) synthesizing the IT equipment and the one or more auxiliary infrastructures to generate a candidate design; d) analyzing one or more operating characteristics of the candidate design; e) repeating steps a)-d) on at least one additional candidate design that differs from the candidate design generated at step c); and f) storing at least one of the candidate design and the at least one additional candidate design.
摘要:
In a method for detecting anomalies in a sensor-networked environment, packages of data are received from a plurality of sensors located in the environment. At least one candidate problem location in the environment is identified based upon data contained in the packages. A principal components analysis is performed on the data collected from sensors associated with the identified at least one candidate problem location to identify a number of hidden variables and the number of hidden variables are analyzed to detect anomalies in the environment. In addition, detected anomalies are outputted. An analyzer for performing the method is provided.
摘要:
According to one example of the present invention, a cooling system is provided. The cooling system comprises a water-cooled air conditioning module for cooling air from a chamber. The chamber is arranged for receiving air to be cooled and hot humid air. The cooling system also comprises a control system for controlling the flow of hot humid air to the chamber such that the air input to the air conditioning module has a predetermined relative humidity level within a predetermined range.
摘要:
In a method of determining cooling resource capacity allocations for resource units in a shared environment for optimized operations, cost parameters associated with operating the resource units in at least one of delivering and receiving cooling resources are identified, one or more constraints associated with operating the resource units are identified, in which at least one of the one or more constraints comprises meeting at least a total cooling demand of components in the shared environment, a cost function that correlates the plurality of identified cost parameters is developed, a minimized cost function is solved for through application of a Lagrange multiplier subject to the identified one or more constraints, and cooling resource capacity allocations for the resource units that result in optimized operations in the shared environment based upon the minimized cost function solution are determined.