# US 10,310,461 B2 · Adaptive polling in energy distribution systems with distributed energy storage

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- Number: US 10,310,461 B2
- Document ID: US10310461B2
- Status: Granted
- Kind: B2
- Application number: 15/140,756
- Filed: 2016-04-28
- Published: 2016-12-29
- Granted: 2019-06-04
- Earliest claimed: 2015-06-29
- Assignees: S&C Electric Company
- Applicants: S&C Electric Company
- Inventors: Donald S. Berkowitz; Thomas Walker
- Web page: https://patentgrep.com/patent/US10310461B2

## CPC

- H02J 3/32: using batteries or super capacitors with converting means
- G05B 15/02: electric
- H02J 3/46: Controlling the sharing of generated power between the generators, sources or networks
- H04L 12/40032: {Details regarding a bus interface enhancer}
- H04Q 9/00: Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
- H02J 3/38: Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J 13/1325: {using phone lines}
- H02J 13/333: the equipment forming part of substations
- H04L 12/40: Bus networks
- H04Q 2209/60: for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
- H04Q 2209/823: where the data is sent when the measured values exceed a threshold, e.g. sending an alarm
- Y02E 40/70: Smart grids as climate change mitigation technology in the energy generation sector
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y04S 10/12: Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S 10/14: Energy storage units
- Y04S 40/124: using wired telecommunication networks or data transmission busses
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04Q: SELECTING (switches, relays, selectors H01H; wireless communication networks H04W)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

Method of controlling distribution of energy within an energy distribution system and energy distribution systems are provided. An energy distribution system includes a central controller and one or more remote distribution control units. A method includes obtaining, with the central controller from the remote distribution control units, operational data indicating an operational condition of the energy distribution system. The method further includes comparing the operational condition to a polling rate threshold that indicates when the operational condition is approaching a condition threshold at which the central controller will operably control operation of the remote distribution control unit. The method further includes adjusting a polling rate at which the operational data is obtained in response to the operational condition crossing the polling rate threshold. The method yet further includes polling and controlling the remote distribution control unit with the central controller at the adjusted polling rate.

## Claims

### Claim 1

A method of controlling distribution of energy within an energy distribution system, the energy distribution system including a distributed energy management (DEM) controller, a tap head associated with a single phase takeoff, and at least one distributed energy storage (DES) unit coupled to the tap head, the method comprising:
obtaining, at regular intervals at a current polling rate, with the DEM controller from at least one of the tap head and the DES unit, operational data indicating electrical loading demand within the energy distribution system;
comparing the electrical loading demand to a polling rate threshold that indicates when the electrical loading demand is approaching an electrical loading demand condition threshold at which the DEM controller will engage the DES unit for load reduction of the electrical loading demand, wherein the electrical loading demand threshold is greater than the polling rate threshold;
increasing relative to the current polling rate, in response to the electrical loading demand crossing the polling rate threshold, the polling rate at which the operational data is obtained at regular intervals by the DEM controller; and
polling the at least one of the DES unit and the tap head with the DEM controller at the polling rate.

### Claim 2 (depends on 1)

The method of claim 1, further comprising decreasing the polling rate in response to the electrical loading demand decreasing below the polling rate threshold.

### Claim 3 (depends on 1)

The method of claim 1, wherein polling the at least one of the tap head and the DES unit includes establishing communications across a telecommunications network.

### Claim 4 (depends on 1)

The method of claim 1, further comprising engaging the DES unit in load reduction in response to the electrical loading demand crossing the electrical loading demand condition threshold.

### Claim 5

An energy distribution system comprising:
a tap head associated with a single phase takeoff;
a remote distribution control unit coupled to the tap head, wherein the remote distribution control unit is a distributed energy storage (DES) system; and
a central controller in communication with the remote distribution control unit, wherein the central controller is a distributed energy management (DEM) system, the central controller configured for:
obtaining, at regular intervals at a current polling rate from at least one of the tap head and the remote distribution control unit, operational data indicating electrical loading demand of the energy distribution system;
comparing the electrical loading demand to a polling rate threshold that indicates when the electrical loading demand is approaching an electrical loading demand condition threshold at which the central controller will operably control operation of the remote distribution control unit for load reduction of the electrical loading demand, wherein the electrical loading demand condition threshold is greater than the polling rate threshold;
increasing relative to the current polling rate, in response to the electrical loading demand crossing the polling rate threshold, the polling rate at which the operational data is obtained at regular intervals by the central controller; and
polling at least one of the tap head and the remote distribution control unit with the central controller at the polling rate.

### Claim 6 (depends on 5)

The energy distribution system of claim 5, wherein the central controller is configured for decreasing the polling rate in response to the electrical loading demand decreasing below the polling rate threshold.

### Claim 7 (depends on 5)

The energy distribution system of claim 5, wherein polling the remote distribution control unit includes establishing communications across a telecommunications network.

### Claim 8 (depends on 5)

The energy distribution system of claim 5, wherein the DES system is configured for sensing the electrical loading demand.