CN203552029U - Microgrid control system based on distributed controllers - Google Patents
Microgrid control system based on distributed controllers Download PDFInfo
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- CN203552029U CN203552029U CN201320662349.2U CN201320662349U CN203552029U CN 203552029 U CN203552029 U CN 203552029U CN 201320662349 U CN201320662349 U CN 201320662349U CN 203552029 U CN203552029 U CN 203552029U
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Abstract
The utility model relates to a microgrid control system based on distributed controllers. The system includes local controllers allocated on different microgrid nodes. The local controllers are in communication with a central controller through a communication unit. The utility model proposes a microgrid framework which is simple and easy to realize. The microgrid framework includes the central controller, the local controllers, the communication unit and a man-machine interaction device. Node state information is acquired, calculated and transmitted through the local controllers and then microgrid node monitoring, optimized scheduling and prediction information obtaining and the like are completed through the central controller. The microgrid control system based on the distributed controllers enables the microgrid nodes to be monitored effectively and operated in an optimized manner so that the microgrid can be managed more reliably and more rapidly.
Description
Technical field
The utility model relates to micro-grid control system technical field, especially a kind of microgrid control system based on distributed director.
Background technology
Conventionally in microgrid control system, need to, at the area monitoring microgrid state disperseing, because distributed power source, load and energy storage device all disperse in microgrid, therefore need to transmit data between communication network each node in microgrid.A suitable control system should be able to be carried out alternately with operator, client, server, shows microgrid real time data and receives order and the information that central controller issues, thereby reach the effect that reduces operating cost.
Requirement is controlled in the operation that the dynamic perfromance of current microgrid and trend problem of management make traditional microgrid control system cannot meet current microgrid.In addition, the seamless switching problem of the microgrid method of operation, the variation of load or topological structure is had higher requirement to coordinating to control for microgrid on the problem that affects of distributed power source, energy storage device in microgrid.
Utility model content
The purpose of this utility model is to provide a kind of operation that can carry out effective monitoring to each node of microgrid, optimize each node, realizes the more reliable microgrid control system based on distributed director of management fast of microgrid.
For achieving the above object, the utility model has adopted following technical scheme: a kind of microgrid control system based on distributed director, comprise the local controller being configured on each microgrid node, and local controller is by communication unit and central controller communication.
Serial communication between described local controller and microgrid node.
The input/output terminal of human-computer interaction device is connected with the input/output terminal of communication unit.
Described communication unit is wire communication unit, described wire communication unit adopts industrial ethernet switch, the input/output terminal of local controller is connected with the input/output terminal of central controller by industrial ethernet switch, ethernet communication between local controller and central controller.
Described communication unit is wireless communication unit, and described wireless communication unit adopts wireless GPRS module, and local controller is by wireless GPRS module and central controller wireless telecommunications.
Described human-computer interaction device is PC or main website server.
As shown from the above technical solution, the utility model proposes a simple microgrid framework, comprise central controller, local controller, communication unit and human-computer interaction device, first by local controller, node status information is gathered, calculated and transmits, again by central controller complete microgrid node monitoring, Optimized Operation, obtain information of forecasting etc., the operation that the utility model makes microgrid node effectively be monitored and to optimize, can manage microgrid more reliably, more fast.
Accompanying drawing explanation
Fig. 1 is system construction drawing of the present utility model;
Fig. 2 is the data-interface schematic diagram between central controller and local controller.
Embodiment
A kind of microgrid control system based on distributed director, comprise the local controller 4 being configured on each microgrid node, local controller 4 is by communication unit 2 and central controller 1 communication, serial communication between described local controller 4 and microgrid node, the input/output terminal of human-computer interaction device 3 is connected with the input/output terminal of communication unit 2, and described human-computer interaction device 3 is PC or main website server.Described central controller 1 complete microgrid node monitoring, Optimized Operation, obtain the functions such as information of forecasting; Each node in microgrid all disposes local controller 4, and node status information is gathered, calculated and transmits; Described communication unit 2 transmits data between central controller 1 and each microgrid node; Human-computer interaction device 3 is realized the monitoring to microgrid node, and by communication network collection and visual micro-grid system real time data, by operations staff to sending instructions or parameters information under central controller 1 and each microgrid node.As shown in Figure 1.
As shown in Figure 1, described communication unit 2 is wire communication unit, described wire communication unit adopts industrial ethernet switch, the input/output terminal of local controller 4 is connected with the input/output terminal of central controller 1 by industrial ethernet switch, ethernet communication between local controller 4 and central controller 1; Described communication unit 2 is wireless communication unit, and described wireless communication unit adopts wireless GPRS module, and local controller 4 is by wireless GPRS module and central controller 1 wireless telecommunications.Local controller 4 can be issued to different control commands in all kinds of distributed power sources, controls its parameter to reach the effect of anticipation; Central controller 1 is carried out a Real time optimal dispatch strategy every a few minutes, for microgrid provides the parameters of optimization, in addition every several seconds also will each node of monitoring microgrid state, to kept stablizing of microgrid when distributed power source lost efficacy; Communication unit 2 guarantees that from local monitoring terminals to central controller 1 provides reliable data communication; Human-computer interaction device 3 utilizes the state of local monitoring terminals collection, record and visual all microgrid nodes, and is assigned instruction and obtained required information by operations staff.
Below in conjunction with Fig. 1,2 pairs of the utility model, be further described.
In the embedded processor platform of central controller 1, carry out Optimization scheduling algorithm, adopt standard universal agreement to support a large amount of equipment, comprise PLC, intelligent electric meter, protective relay etc.All integrated control function additionally in the control system of diesel oil and Hydropower Unit, as PID controller and PWM function have all been integrated in local controller separately, a PID controller and a PWM controller arranged in series are in genset, PID controller receives the instruction of generated energy reference value from central controller, controls the output power of genset.After central controller 1 is connected into microgrid communication system, can complete following work:
1) monitoring microgrid node state
Central controller 1 obtains the up-to-date information of each node state in a micro-grid system every several seconds.
2) carry out Optimized Operation strategy
The Optimized Operation operation of microgrid can realize by formulating an Optimized model, and it has determined the direction of trend between the best contribution point of each distributed power source or energy storage device and microgrid and major network.The objective function of such Optimized model can comprise fuel, maintenance, the required cost of start and stop, and constraint condition comprises the least energy/power demand of electric power heat balance, various distributed power sources in microgrid.Optimal Operation Strategies was carried out once every some minutes, but loaded in short-term and the change of generated energy because microgrid often has, so can correspondingly shorten the interval time of carrying out Optimal Operation Strategies.
3) obtain information of forecasting
Carrying out optimal scheduling algorithm needs load information and opens renewable sources of energy information of forecasting.External unit can gather weather information, and the prediction of load information and regenerative resource can be by internal calculation.
1) analog-and digital-input/output module
The required data of local controller 1 convert signal to digital format by sensor and use.Equally, local controller 4 produces simulating signal and control command also pass to peripherals.
2) robotization processor
For the execution mechanism that provides maximum dirigibility, local controller 4 to have thousands of row logics and complexity to user guarantees to realize robotization control and logic.The function that this has simplified central controller 1, makes it as long as process high level instructions, and local controller 4 is responsible for the execution of order and reference value is set.Central controller 1 just becomes more efficient like this, and local controller 4 only need to design according to the characteristic of distributed power source.
3) control function
Concrete control function can help user to reduce the control procedure of a lot of complexity as PID controller, lead-lag controller, speed control, PWM controller etc.For example, the result of PID controller output can be used as the feedback of PWM controller, thus the operation of the control distributed power source of coordinating more accurately.
Distributed power source and load General Decentralized be in whole microgrid region, therefore needs a reliable communication network transmit data between central controller 1 and each microgrid node, communication network should with distribution network systems in types of applications match.Consider topology, reliability, cost and installation, the debugging of microgrid, the simplicity of maintenance, can adopt the communications such as active Ethernet, wireless GPRS.Microgrid communication protocol adopts ModbusTCP/IP agreement, and this agreement is applicable to microgrid control system, and a lot of PLC, IED and controller etc. are all supported this agreement, all right configuration communication protocol converter in place of this external necessity.Ethernet provides the communication port of a flattening, more easily expands and support various protocols to hold equipment widely, for asynchronous serial multiple spot agreement, to comprise Modbus, and the IP of encapsulation is provided.When the communication distance of microgrid node is during at 100-2000 rice, recommend adoption multimode optical fiber, for ground potential, transient state disturbance poor and that caused by fault or switch events etc. has very strong vulnerability to jamming to this medium.For long distance, 10km left and right, can adopt that micropower is wireless carrys out expanding communication network, and this mode adopts the wireless communication of frequency hopping and spread spectrum, and interference rejection ability is also very strong.
Human-computer interaction device 3 is for the monitoring to microgrid node, and gathers micro-grid system real time data by communication network, the data of collection can be carried out visually, and assigns instruction or parameters information by operations staff.In addition, operations staff can assign instruction to central controller 1 by man-machine interface and from microgrid, adds or reject distributed power source, so just can control very easily micro-grid system.
Central controller 1 provides a supervisory layers for micro-grid system, and in central controller 1 monitoring micro-grid system, the state of all key nodes, after operation dispatching algorithm, is handed down to each distributed power source by steering order.As shown in Figure 2: the input of central controller 1 comprises the validity, presence of all microgrid nodes, electric weight, the electric weight of each load consumption, the energy storage situation of energy storage device etc. that each distributed power source sends; Control measure comprise start/stop, the change of generated energy reference value and the change of control model of distributed power source.
In sum, the utility model proposes a simple microgrid framework, comprise central controller 1, local controller 4, communication unit 2 and human-computer interaction device 3, first by 4 pairs of node status information of local controller, gather, calculate and transmit, again by central controller 1 complete microgrid node monitoring, Optimized Operation, obtain information of forecasting etc., the operation that the utility model makes microgrid node effectively be monitored and to optimize, can manage microgrid more reliably, more fast.
Claims (6)
1. the microgrid control system based on distributed director, is characterized in that: comprise the local controller (4) being configured on each microgrid node, local controller (4) is by communication unit (2) and central controller (1) communication.
2. the microgrid control system based on distributed director according to claim 1, is characterized in that: serial communication between described local controller (4) and microgrid node.
3. the microgrid control system based on distributed director according to claim 1, is characterized in that: the input/output terminal of human-computer interaction device (3) is connected with the input/output terminal of communication unit (2).
4. the microgrid control system based on distributed director according to claim 1, it is characterized in that: described communication unit (2) is wire communication unit, described wire communication unit adopts industrial ethernet switch, the input/output terminal of local controller (4) is connected with the input/output terminal of central controller (1) by industrial ethernet switch, ethernet communication between local controller (4) and central controller (1).
5. the microgrid control system based on distributed director according to claim 1, it is characterized in that: described communication unit (2) is wireless communication unit, described wireless communication unit adopts wireless GPRS module, and local controller (4) is by wireless GPRS module and central controller (1) wireless telecommunications.
6. the microgrid control system based on distributed director according to claim 3, is characterized in that: described human-computer interaction device (3) is PC or main website server.
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| CN201320662349.2U CN203552029U (en) | 2013-10-25 | 2013-10-25 | Microgrid control system based on distributed controllers |
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| CN201320662349.2U CN203552029U (en) | 2013-10-25 | 2013-10-25 | Microgrid control system based on distributed controllers |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425671A (en) * | 2015-11-30 | 2016-03-23 | 上海宇航系统工程研究所 | Distributed information system for moon detection |
| CN106325233A (en) * | 2015-07-07 | 2017-01-11 | 刘华 | Visual programming logic distribution control system and implementation method |
| US10697431B2 (en) | 2016-04-07 | 2020-06-30 | Vestas Wind Systems A/S | Control of a wind turbine taking noise into account |
| US10753338B2 (en) | 2015-03-23 | 2020-08-25 | Vestas Wind Systems A/S | Control of a multi-rotor wind turbine system using a central controller to calculate local control objectives |
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2013
- 2013-10-25 CN CN201320662349.2U patent/CN203552029U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10753338B2 (en) | 2015-03-23 | 2020-08-25 | Vestas Wind Systems A/S | Control of a multi-rotor wind turbine system using a central controller to calculate local control objectives |
| CN106325233A (en) * | 2015-07-07 | 2017-01-11 | 刘华 | Visual programming logic distribution control system and implementation method |
| CN105425671A (en) * | 2015-11-30 | 2016-03-23 | 上海宇航系统工程研究所 | Distributed information system for moon detection |
| US10697431B2 (en) | 2016-04-07 | 2020-06-30 | Vestas Wind Systems A/S | Control of a wind turbine taking noise into account |
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Owner name: KEDA INTELLIGENT ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ANHUI CSG SMART GRID TECHNOLOGY CO., LTD. |
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Address after: 230088 No. 5111 Wangjiang West Road, hi tech Zone, Anhui, Hefei Patentee after: CSG SMART ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 230088 No. 612-1, Mount Huangshan Road, hi tech Zone, Anhui, Hefei Patentee before: ANHUI SCIENCE AND TECHNOLOGY INSTITUTE OF CHINA SMART GRID TECHNOLOGY Co.,Ltd. |
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