# US 5,706,207 A · Control equipment for electrical power generators

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- Number: US 5,706,207 A
- Document ID: US5706207A
- Status: Granted
- Kind: A
- Application number: 08/554,815
- Filed: 1995-11-07
- Granted: 1998-01-06
- Earliest claimed: 1993-05-07
- Assignees: Siemens Aktiengesellschaft
- Inventors: Heribert Kurten; Herbert Wagner; Wolfgang Bayer
- Web page: https://patentgrep.com/patent/US5706207A

## CPC

- F01K 13/02: Controlling, e.g. stopping or starting
- H02J 3/46: Controlling the sharing of generated power between the generators, sources or networks
- H02P 9/04: Control effected upon non-electric prime mover and dependent upon electric output value of the generator
- F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

## Abstract

A control equipment for automatically controlling power units in an electrical power supply system includes a control unit being connected through a data transmission element to each power unit to be controlled, for receiving power-unit-specific measured variables and for emitting power-unit-specific reference variables. The control unit evaluates the measured variables cyclically by taking account of stored values and defining a control instruction for one or each power unit. Particularly effective control of the power units is possible through the use of such a control equipment, with both a predetermined reliability level of the power supply or electricity supply being maintained and an unnecessarily high power reserve being avoided.

## Claims

### Claim 1

In an electrical power supply system having power units, a control equipment for automatically controlling the power units, comprising:
a data transmission element;
a control unit being connected through said data transmission element to each of the power units to be controlled;
said control unit receiving power-unit-specific measured variables and emitting power-unit-specific reference variables;
said control unit evaluating the measured variables cyclically by taking account of stored values and defining a control instruction for at least one of the power units; and
said control unit determining for each power unit a required value for a fraction of a grid load to be covered overall and a required value for a fraction of an overall power reserve.

### Claim 2 (depends on 1)

The control equipment according to claim 1, wherein the control instruction is a start instruction.

### Claim 3 (depends on 1)

The control equipment according to claim 1, wherein the control instruction is a stop instruction.

### Claim 4 (depends on 1)

The control equipment according to claim 1, wherein said control unit is a first control unit, and including a second control unit being connected to said first control unit and emitting a correction value to said first control unit for a total power reserve to be split between the individual power units, an approximation of an actual value to a target value being carried out, and said first control unit assigning a corrected power reserve to each of the power units.

### Claim 5 (depends on 4)

The control equipment according to claim 4, wherein the target value is within an adjustable tolerance band.

### Claim 6 (depends on 4)

The control equipment according to claim 4, including a computation unit being connected to said first control unit and to said second control unit for determining a power reserve from the power-unit-specific measured variables and from power-unit-specific constant parameters of a given power unit, for governing said first control unit for the given power unit.

### Claim 7 (depends on 6)

The control equipment according to claim 6, wherein the governing power reserve is an additional power being provided within seconds.

### Claim 8 (depends on 6)

The control equipment according to claim 6, wherein said computation unit is a first computation unit, and including a second computation unit being connected to said first control unit for determining a delay time and a rate of change for long-term additional power which must be provided by the given power unit, from the power-unit-specific measured variables and from the power-unit specific constant parameters.

### Claim 9 (depends on 8)

The control equipment according to claim 8, including a memory being connected to said second control unit for storing data being derived from changes in a power distribution in the power supply system, and parameters of a simulation model being variable through using the data being stored in said second control unit.