JPH02262846A - Operation controller for generator - Google Patents

Abstract

PURPOSE:To improve generation efficiency and to realize efficient operation by providing a plurality of generators to be driven through a plurality of engines, storage device for storing the characteristic data of the engines and generators, a WHM for measuring the power load, and a device for controlling start, stop and rotation of the engines. CONSTITUTION:A controller 1 comprises a device 1a for storing the characteristic and the environmental factor data of engines 2, 4 and an operating unit 1b for selecting and predicting the operation pattern based on these data, power to be generated, outer air temperature, and the like. The controller 1 is connected through control lines 6 with a steam turbine 2 and a Diesel engine 4, and an engine start/stop signal is transmitted through a relay contact while a power generation set value is transmitted as an analog output. Temperature and power generating amount are inputted from the engines 2, 4 to the controller 1. By such arrangement, power generation efficiency is improved resulting in smooth and efficient operation.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an operation control device for a generator configured by combining different types of generators in order to control the amount of power generation in accordance with complicated power load fluctuations.

[Conventional technology]

Conventional private power generation systems typically operate using one or a combination of generators of a single type.

[Problem to be solved by the invention]

In conventional in-house power generation systems, load fluctuations were constant, and in some cases power generation was performed according to a predetermined operating pattern, but when load fluctuations were large, load adjustments were made by forcibly shedding the load. was. However, this type of operation method has the problem that it cannot be used in places such as hospitals where the load cannot be cut off. [Means for Solving the Problems] At least characteristic data of the engine and the generator are stored, and an optimum operation pattern of the generator is selected based on the stored characteristic data in response to power load fluctuations. Configured to control stop and rotation speed.

[For use]

The control device selects the optimal operating pattern for the generator based on the characteristic data of the engine and generator while observing fluctuations in the electric power load, and controls starting, stopping, and rotational speed of the engine based on the results.

【Example】

The present invention will be explained below based on the drawings. In the figure, ■ has a storage device 1a that stores characteristic data of the engine and generator and environmental factor data, and uses these data, generated power amount, outside temperature, etc. to predict driving pattern selection at each time. This is a control device consisting of an arithmetic unit 1b constituted by a CPU. Engine and generator characteristic data are data necessary for operation, such as maximum power generation, load characteristics, relationship between engine efficiency and fuel consumption, power generation start-up characteristics, power factor, power generation efficiency, and light load characteristics. . Furthermore, causes of power load fluctuations include non-human factors such as season, time of day, day and night, temperature and temperature, and artificial factors such as holidays and factory maintenance. Therefore, these data are also stored in the storage device 1a. The operation pattern is a schedule table regarding starting/stopping and power generation amount for each generator determined for each time. This control device 1 is connected to the steam turbine 2 via a control line 6.
and diesel engine 4, the engine start/stop signal is sent via the relay contact, and the power generation set value is also sent by analog output, and the temperature and power generation amount are analog output from engines 2 and 4. The signal is received by the control device 1. A generator 3 is driven by a steam turbine 2 and supplies power to a load line 8 via a circuit breaker 7. Further, the generator 5 is driven by the diesel engine 4 and supplies electric power to the load line 8 via the circuit breaker 11 . In this embodiment, a generator 3 driven by a steam turbine 2 is used for supplying large power, and a generator 5 driven by a diesel engine 4 is used for supplying small power. 9 is an outside temperature sensor that detects the outside temperature; 10 is a wattmeter that measures the amount of power supplied to the load line 8; A sensor may be provided to measure the amount of oil or the like. Now, the electric power load fluctuates greatly due to the factors mentioned above, and is also superimposed with short-term load fluctuations depending on factors such as the operating rate of the factory. Therefore, the control device 1 uses the calculation device 1b to predict the generated power from the slope of the load power trend data measured at regular intervals, and the large amount of power is generated by the generator 3 driven by the steam turbine 2. is diesel engine 4
A steam turbine 2 is supplemented by a generator 5 driven by a
and controls the amount of steam and heavy oil supplied to the diesel engine 4. Note that since heating and cooling is normally turned off by 0N10FF depending on the outside temperature, the power consumption is predicted by the arithmetic unit 1b based on the operation correlation data between the outside air temperature detected by the outside temperature sensor 9 and the air conditioner, and the operation is performed in a more detailed manner. Allows pattern selection.

【Effect of the invention】

The present invention improves power generation efficiency, and by predicting load fluctuations in advance, even a generator system with a slow response speed can follow load fluctuations, allowing efficient operation control.

[Brief explanation of drawings]

The first is a block diagram of a generator operation control device according to the present invention. i - control device, 1a - storage device, 1b - arithmetic unit, 2 - steam turbine engine, 4 - diesel engine, 3.5 - generator, 7, 11 - circuit breaker, 8 load line.

Claims (3)

[Claims] (1) A plurality of generators driven by a plurality of engines, a storage device that stores characteristic data of at least the engines and generators, a watt-hour meter that measures electric power load, and a power meter that measures the electric power load according to the electric power load fluctuation. A generator operation control device comprising: a control device that controls starting, stopping, and rotational speed of the engine so as to select an optimal pattern for the generator based on data. (2) The operation control device according to claim 1, wherein the engines are operated with different fuels. (3) The operation control device according to claim 1, wherein the control device controls starting, stopping, and rotation speed of the engine based on outside temperature.