CN204424898U - A kind of novel micro-grid system control device - Google Patents

Abstract

The utility model discloses a kind of novel micro-grid system control device, it is characterized in that, comprising: the process layer of Distributed-generation equipment information acquisition system unit, energy storing and electricity generating unit, environmental monitoring unit, simulation load cell, actual load unit, underlying device control, administrative unit, the local tuning controller composition of microgrid; The wall be made up of microgrid center-control; The supervisory layers formed with energy management software is monitored by microgrid energy.The utility model is by microgrid three layers control, realize controlling microgrid generating equipment, power consumption equipment, remote electric network scheduling three entirety, coordinate and optimizing, achieve multilayer, multiple target is distributed, many agentbased control device, form multi-stage data center, can the various controlling functions of effective implemention microgrid, such that whole micro-grid system is stable, safety, to run efficiently.

Description

A kind of novel micro-grid system control device

Technical field

The utility model belongs to microgrid technical field of power generation, relates to a kind of novel micro-grid system control device.

Background technology

Along with the development of national economy, increasing rapidly of electricity needs, environmental pollution is serious, and the development of new forms of energy is imperative.But due to the randomness that the new forms of energy such as wind energy and solar energy have, existing electrical network cannot meet the requirement of extensive wind energy and solar power generation access, and this has become the major obstacle of China's regenerative resource distributed power generation extensive development.

Microgrid mainly refers to (small-sized) distribution subnet be made up of distributed power generation unit, energy storage link and local load, and distributed power generation is then more prone to utilize novel renewable energy (wind energy and solar energy etc.).

Micro-grid system is by distributed power generation and power transmission and distribution technology, access for renewable energy power generation provides an other solution route, and as the organic component of strong intelligent grid system, more significant economy and environment benefit can be realized by having complementary advantages simultaneously.

Begun to take shape the basic theories such as the operation of microgrid, control, protection and communication in Europe, it mainly concentrates on micro-net control device and microgrid planning, nets the fields such as coordinated management, running optimizatin more, and has built microgrid practical demonstration engineering.

Distributed-generation equipment information acquisition system unit is contained in micro-grid system; multiple electric load; also have bus, switch, transmission line, protective relaying device; electric energy meter carries out electric energy metrical and guarantees device and the unit of electric power netting safe running; contactor, static switch, switch, disconnecting link and control section; micro-grid system also needs the United Dispatching receiving electrical network to control simultaneously, and therefore, micro-grid system is very complicated energy management system.

The control device of micro-grid system is one of core of micro-grid system, it is centralized control model that traditional microgrid controls control model, all information all needs microgrid central controller, real-time, the reliability and stability of whole system are not being met, run and control simply, not easily carry out the contact of many microgrids and run.Therefore, a kind of more intelligent control device is needed to carry out energy management and control.

The stable operation of micro-grid system control device and intellectuality, will determine to a great extent whole system whether stability, safety, run efficiently.

Utility model content

In order to overcome the deficiencies in the prior art, the utility model provides a kind of novel micro-grid system control device, whole micro-grid system can be made to stablize, safely, run efficiently.

The technical solution of the utility model is as described below: for solving the problem, the utility model provides a kind of novel micro-grid system control device, it is characterized in that, comprise: by Distributed-generation equipment information acquisition system unit, energy storing and electricity generating unit, environmental monitoring unit, simulation load cell, actual load unit, underlying device controls, the process layer of administrative unit and the local tuning controller composition of microgrid, the wall be made up of microgrid central controller and communication system, the supervisory layers become with energy management software and database servers group is monitored by microgrid energy.

Wherein,

Described Distributed-generation equipment information acquisition system unit monitors the voltage of various distributed power source, electric current, active power, reactive power, system frequency, equipment working state and power factor, power load working condition, load electric energy quality, load power consumption;

Described underlying device controls, administrative unit is responsible for underlying device and is controlled and the issuing of supervisory instruction, and after described wall issues control command, before next control cycle arrives, described underlying device controls, administrative unit performs control command voluntarily;

Described wall calculates and issues microgrid core algorithm, and is responsible for collecting and upload function underlying device data, the data of collection is carried out classification and sums up, be uploaded to supervisory layers;

Described database server completes the data acquisition of microgrid platform all devices and the secondary development of data, also can contact between many microgrids time complete data teletransmission issue.

According to a kind of novel micro-grid system control device that the utility model provides, its beneficial effect is by centralized micro-net control device, be improved to microgrid three layers of distributing to control, realize microgrid generating equipment, power consumption equipment, remote electric network scheduling three entirety controls, coordinate and optimize, achieve multilayer, multiple target is distributed, many agentbased control device, form multi-stage data center, can the various controlling functions of effective implemention microgrid, as realized system emergency power consumption control, microgrid failure predication and process, automatically also/from net switching controls, counterflow-preventing controls, black starting-up controls, peak load shifting, time shift etc.

Accompanying drawing explanation

Below in conjunction with accompanying drawing and embodiment, the utility model is described further.

Fig. 1 is structural representation of the present utility model.

Embodiment

Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.

As shown in Figure 1, a kind of micro-grid system control device that the utility model provides is based on distributed multi-agent control system, is the control axis that microgrid runs.The utility model is divided into three key-courses, i.e. supervisory layers (station level), wall, process layer, every one deck has relatively independent control and management function, and originally traditional centralized control functions is decomposed, and greatly improves the real-time of system, stability and fail safe.

Supervisory layers comprises microgrid energy monitoring and energy management software, and database server, its emphasis completes micro-grid system, comprise intermittence generator unit generation schedule, load electricity consumption plan, energy storing and electricity generating plan, diesel engine generator generation schedule, super capacitor generation schedule, miniature gas fuel engine power generation plan distributed energy generating prediction, receive power grid control instruction scheduling.In addition, because the final data storehouse of microgrid is at this layer, user carries out the mining again of data according to microgrid operation history data, sets up the model of many microgrids contact.Database server completes the data acquisition of microgrid platform all devices and the secondary development of data, also can contact between many microgrids time complete data teletransmission issue.

Wall comprises microgrid central controller and communication system, emphasis completes the control cycle of microgrid mesoscale, it is according to the input data of microgrid supervisory layers, complete the calculating of micro-grid system core control algolithm, with issuing of control command, simultaneously, process layer devices data are carried out first collection and classification by the microgrid central controller in wall, form temporary data center, for the input variable of microgrid control algolithm, and by data upload to supervisory layers.

Process layer mainly comprises direct current system, photovoltaic system, wind power system, load system and diesel generating system.Concrete comprises Distributed-generation equipment information acquisition system unit, energy storing and electricity generating unit, environmental monitoring unit, simulation load cell, actual load unit, underlying device control, administrative unit and the local tuning controller of microgrid, and emphasis completes the control cycle of microgrid Small and Medium Sized.Its control command issued according to microgrid wall, independently controls in wall control cycle, as the failure predication of system, and energy hole, the control that the real-times such as system emergency control are higher.In addition, process layer also carries out collection and the protocol conversion of various kinds of equipment data, dissimilar communications protocol is converted to the communications protocol pattern of standard.Reporting to the police or fault as run into microgrid in generation, being got in touch with, complete microgrid troubleshooting between equipment by process layer, to reach real-time, the safety and reliability of microgrid, what each process layer devices all possessed this cell data collects function.The Distributed-generation equipment information acquisition system unit that it comprises monitors the voltage of various distributed power source, electric current, active power, reactive power, system frequency, equipment working state and power factor, power load working condition, load electric energy quality, load power consumption; Underlying device controls, administrative unit is responsible for underlying device and is controlled and the issuing of supervisory instruction, and after described wall issues control command, before next control cycle arrives, described underlying device controls, administrative unit performs control command voluntarily.

Compared with existing microgrid central control device technology, the utility model has following feature:

(1) functional realiey level division, achieves many proxy modes:

Original central control device, all instructions are all pooled to supervisory layers, the real-time of algorithm execution cycle, execution all receives restriction, first functional module is divided according to level, each level has fixing n-back test, improve the independence of each level, real-time, the reliability and security of whole system are obtained for large increase.

Meanwhile, by microgrid power prediction module, microgrid load prediction module etc., carry out modularized design, unified interface standard is defined to each level, make data more smooth and easy in the communication of each level.

(2) self-decision-making:

Due to stratification is carried out in control, a lot of intellectualized module can carry out self-teaching, self-contr ol, system is according to pre-set control objectives, realizing route can be found voluntarily according to system mode module, prediction module, presence detection module, system decision-making analysis module and multiple-objection optimization administration module, complete the work of control objectives, achieve self-decision-making capability.

(3) process layer adds the contact communication between many equipment:

Due to process layer devices is carried out Classification Management, add the local tuning controller of microgrid, the network by standard between each device cluster is got in touch with, complete network state detection, system failure detection, after the system failure occurs, need to process according to fault rank, ensure system safety.Real time fault handling is higher, and control by increasing contact autonomous between many device clusters, stability, the safety and reliability of system are increased dramatically.

(4) enhancement mode communication detection:

In control in the past, all importance of Special attention will be given to control, in the utility model, communication hardware support platform, add the hot backup redundancy of communication detection function and physical connection circuit, by various communication detection means, the physical connection set up in microgrid is detected in real time, ensure the normal and reliable of system communication.

(5) control cycle of entire system is accelerated:

In centralized control in the past, often perform a control command, all need to carry out Data Collection, the calculating of algorithm, issuing of instruction, every bar instruction is all that the serial of a series of control unit performs, employing distributed multi-agent controls, form multi-stage data center, a series of control units in control command can carry out the operation walked abreast, and the calculating and instruction accelerating control command issues.

(6) efficient platform is provided to the expansion of microgrid function:

In centerized fusion in the past, increase a new controlling functions, need the hardware platform considering microgrid control system to support situation, consider the mated condition between other control module, and distributed multi-agent control device, according to the interval of control cycle, classified by key-course, therefore, following different controlling functions can be sorted out very easily, hardware platform also can support accordingly, and controlling functions has very strong compatibility.

(7) control model of diversification is provided:

Be not difficult to find in distributed multi-agent micro-net control device, focus control mode is a kind of special circumstances of distributed multi-agent control model, therefore, just can compatible focus control mode by distributed multi-agent control device, there is more wide study and practice prospect.

(8) multi-stage data center is formed:

Owing to have employed distributed multi-agent control device, at different levels all possessed data preservation, backup and the process of data preparation, every grade of centre data has local controller to collect, control for this locality provides effective Data safeguard, under dual network all breaks down situation, relevant data all can be preserved in center at different levels, and make after communication failure recovers, data are able to completely remain to supervisory layers.

According to the novel micro-grid system control device of one that the utility model provides, propose the perfect control method of distributed multi-agent control device and safeguard, enrich the control device of microgrid, improve further microgrid in realtime control, energy management, Systematical control, communication robust reliable and with the good interface of traditional electrical online friend in function, enhance control precision and the actual effect of microgrid.

The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and replacement, these improve and replace and also should be considered as protection range of the present utility model.

Claims (1)

1. a novel micro-grid system control device, it is characterized in that, comprise: to be controlled by Distributed-generation equipment information acquisition system unit, energy storing and electricity generating unit, environmental monitoring unit, simulation load cell, actual load unit, underlying device, process layer that administrative unit and the local tuning controller of microgrid form, the wall be made up of microgrid central controller and communication system, supervisory layers; Wherein,

Described Distributed-generation equipment information acquisition system unit monitors the voltage of various distributed power source, electric current, active power, reactive power, system frequency, equipment working state and power factor, power load working condition, load electric energy quality, load power consumption;

Described underlying device controls, administrative unit is responsible for underlying device and is controlled and the issuing of supervisory instruction, and after described wall issues control command, before next control cycle arrives, described underlying device controls, administrative unit performs control command voluntarily;

Described wall by collect underlying device data upload to supervisory layers.