# US 10,120,347 B2 · Power generator protection unit

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,120,347 B2
- Document ID: US10120347B2
- Status: Granted
- Kind: B2
- Application number: 15/409,588
- Filed: 2017-01-19
- Published: 2017-05-11
- Granted: 2018-11-06
- Earliest claimed: 2012-06-07
- Assignees: Grupo Guascor S.L. Unipersonal
- Applicants: Grupo Guascor, S.L. Unipersonal
- Inventors: Jaime Martinez Pinillos
- Web page: https://patentgrep.com/patent/US10120347B2

## CPC

- H02J 13/1321: {using a wired telecommunication network or a data transmission bus}
- G05B 9/02: electric
- H02H 7/06: for dynamo-electric generators; for synchronous capacitors
- H02J 3/00: Circuit arrangements for AC mains or AC distribution networks
- H02J 3/40: Synchronisation of generators for connection to a network or to another generator
- H02J 13/36: specially adapted for protection systems
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y04S 10/20: using protection elements, arrangements or systems
- 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)
- H02H: EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired working conditions G01R, e.g. G01R31/00, G08B; locating faults along lines G01R31/08; emergency protective devices H01H)
- 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

A generator protection unit is provided including a central processing unit including at least one programmable device configured to utilize an Ethernet communication protocol. The central processing unit may be configured to synchronize a first signal generated by a generator electrically coupled to the generator protection unit to a second signal including an electrical power grid parameter of an electrical power grid, the first signal and the second signal having a phase offset. The generator protection unit may also include a plurality of multimeters, each electrically coupled to the electrical power grid and the central processing unit, and at least one display filter electrically coupled to the central processing unit and configured to separate a defined portion of a protection parameter signal, such that a remaining portion of the protection parameter signal is transmitted to the central processing unit. The generator protection unit may further include a user interface coupled to the central processing unit and configured to relay at least the remaining portion of the protection parameter signal to an operator of the generator protection unit.

## Claims

### Claim 1

A generator protection unit, comprising:
a central processing unit comprising at least one programmable device configured to utilize an Ethernet communication protocol, the central processing unit configured to synchronize a first signal generated by a generator electrically coupled to the generator protection unit to a second signal comprising an electrical power grid parameter of an electrical power grid, the first signal and the second signal having a phase offset,
wherein the first signal comprises a voltage waveform generated by the generator,
wherein the electrical power grid parameter comprises a voltage waveform indicative of a voltage of an electrical bus electrically coupled to the electrical power grid and the generator,
a plurality of multimeters, each electrically coupled to the electrical power grid and the central processing unit;
at least one display filter electrically coupled to the central processing unit and configured to separate a defined portion of a protection parameter signal, such that a remaining portion of the protection parameter signal is transmitted to the central processing unit;
a user interface coupled to the central processing unit and configured to relay at least the remaining portion of the protection parameter signal to an operator of the generator protection unit; and
a driver engine having a rotary shaft mechanically coupled to the generator, the central processing unit being configured to transmit a synchronization signal to the driver,
wherein the synchronization signal causes the driver engine to increase or decrease a rotational speed of the rotary shaft so that the voltage waveform generated by the generator be substantially equal to the voltage waveform of the electric bus.

### Claim 2 (depends on 1)

The generator protection unit of claim 1, wherein the programmable device is further configured to utilize CANopen communication protocol.

### Claim 3 (depends on 1)

The generator protection unit of claim 1, wherein one or more of the multimeters is configured to measure the first signal, the second signal, and the protection parameter signal.

### Claim 4 (depends on 1)

The generator protection unit of claim 1, wherein the protection parameter signal is indicative of the power, voltage, current, frequency, or a combination thereof, in at least one of the generator, the electrical bus, and the electrical power grid.

### Claim 5 (depends on 1)

The generator protection unit of claim 1, wherein the display filter configured to separate the protection parameter signal includes a band-pass filter.