A plant-level power demand control system and device for industrial enterprises

Abstract

The invention discloses an industrial enterprise plant-level power demand control system and devices. The industrial enterprise plant-level power demand control system and the devices include that the system comprises power demand optimized analysis modules of an optimized dispatching layer, power demand control devices of a monitoring layer and power demand executive devices of a normal control layer, communication of the optimized dispatching layer and the monitoring layer is performed in a MODBUS-TCP mode, and communication among the devices is performed in a GOOSE mode. According to the system, the power demand optimized analysis modules figure out demand control target values according to prediction and trend analysis results and combination with real-time information of a power demand flow network, then the demand control target values are sent down to the power demand control devices of the monitoring layer, the devices perform optimizing calculation on load adjustment amount according to actual operating states of control objects of controlled areas, control orders are sent down to the power demand executive devices of the normal control layer, and closed-loop control over the control objects can be achieved.

Description

technical field [0001] The invention belongs to the control field of industrial production process, and in particular relates to a plant-level power demand control system and device. Background technique [0002] Among the various costs of industrial enterprises, electricity has become the third or fourth largest cost after material costs and labor costs, especially in some high energy-consuming enterprises, electricity has become the most important cost However, due to various reasons such as management, technology, and technology, many enterprises have low power utilization efficiency and high energy-saving potential. More and more attention and attention of industrial enterprises. [0003] At present, for users of large industrial enterprises with a transformer capacity of 315kVA or an installed capacity of electrical equipment above 315kVA, a two-part electricity price system is implemented, that is, the electricity price and the basic electricity price. The basic elect...

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Problems solved by technology

[0004] The existing maximum demand control devices generally use a single device to monitor and control the demand assessment point equipment, and it is impossible to establish an enterprise plant-level power demand control model, and the power load of other processes cannot be taken into account during control; there is no Equipped with a power demand execution device, without its own acquisition unit, the energy information can only be collected through the watt-hour meter, and it is difficult to collect the process data of the control equipment

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