微電網(wǎng)互聯(lián)變流器控制算法模型及邏輯節(jié)點設計
發(fā)布時間：2018-08-18 19:53
【摘要】：隨著電力電子技術，，分布式電源技術和微電網(wǎng)技術的發(fā)展與日趨成熟，微電網(wǎng)供電質(zhì)量、微電網(wǎng)控制技術、多微網(wǎng)間能源調(diào)度等問題的研究越來越多。微電網(wǎng)供電可靠性和靈活性方面的研究主要集中在微電網(wǎng)中分布式電源變流器的控制問題上，控制策略及其控制算法成為研究的關鍵。同時，隨著IEC61850標準應用范圍的不斷擴展，微電網(wǎng)中電力電子器件及其控制器的互操作性越來越成為一種發(fā)展需求。將信息通信技術與微電網(wǎng)技術相結合，對智能電網(wǎng)的探索與建設具有重大意義。本文針對微電網(wǎng)互聯(lián)實例，結合IEC61850標準，對變流器控制算法進行研究。全文內(nèi)容可分為兩個部分： （1）信息建模與邏輯節(jié)點設計是實現(xiàn)設備互操作的重要基礎和必要前提。本文以微電網(wǎng)互聯(lián)變流器為例，分析了變流裝置的3種常用的控制策略及PQ控制算法的設計過程及電流控制環(huán)的設計，并得出相應的PQ控制算法結構圖。根據(jù)該控制算法結構圖，設計了控制算法的信息交互模型，并分析了信息流的具體交互過程。詳細設計了模型內(nèi)的功能邏輯節(jié)點FPID和FSPT，算術邏輯節(jié)點FOPE0、FOPE1和FOPE2，以及換相邏輯節(jié)點FABD和FDQA，而邏輯節(jié)點的設計包括輸入輸出端口設計和節(jié)點內(nèi)部的算法實現(xiàn)框圖設計，且所有的邏輯節(jié)點都為實例化設計，邏輯節(jié)點之間都是相互關聯(lián)的。然后設計了軟件鎖相環(huán)模塊、電流控制模塊、功率控制模塊，并分析了上述模塊與邏輯節(jié)點的關系。最后，在MATLAB/SIMULINK平臺上搭建了整個PQ控制仿真模型，仿真驗證了電壓鎖相、電流跟隨、有功無功功率跟隨等功能，并指出了仿真波形與邏輯節(jié)點之間的關系。 （2）邏輯節(jié)點的設計可以應用于其它實例。根據(jù)上述邏輯節(jié)點的設計方法，結合IEC61499標準，以變電站母聯(lián)間隔閉鎖為例，通過IEC61850模型與IEC61499模型的具體映射，設計了一種基于IEC61850/61499的邏輯功能塊，該功能塊具有互操作性、可配置性和可重用性。文中主要介紹了閉鎖邏輯功能塊CILO_FB和控制邏輯功能塊CSWI_FB，詳細設計了功能塊內(nèi)部的狀態(tài)機及其算法，并驗證了功能塊的正確性，同時，也便于整個母聯(lián)間隔閉鎖系統(tǒng)的設計。最后在FBDK平臺上設計了該閉鎖系統(tǒng)并仿真驗證了系統(tǒng)的正確性。
[Abstract]:With the development and maturity of power electronics technology, distributed generation technology and microgrid technology, more and more research on the power supply quality, microgrid control technology and energy dispatch among multi-microgrid has been carried out. The research on the reliability and flexibility of microgrid power supply is mainly focused on the control problem of distributed power converter in microgrid. The control strategy and its control algorithm become the key to the research. At the same time, with the continuous expansion of IEC61850 standard application, the interoperability of power electronic devices and their controllers in microgrid becomes more and more a development requirement. The combination of information communication technology and microgrid technology is of great significance to the exploration and construction of smart grid. In this paper, the control algorithm of converter is studied based on the IEC61850 standard and the example of microgrid interconnection. The content of this paper can be divided into two parts: (1) Information modeling and logical node design are the important foundation and prerequisite for the implementation of device interoperability. Taking the microgrid interconnected converter as an example, this paper analyzes three common control strategies of the converter, the design process of the PQ control algorithm and the design of the current control loop, and obtains the corresponding PQ control algorithm structure diagram. According to the structure diagram of the control algorithm, the information interaction model of the control algorithm is designed, and the specific interactive process of the information flow is analyzed. The functional logic nodes FPID and FSPT in the model, the arithmetic logic nodes FOPE0 / FOPE1 and FOPE2, and the commutation logic nodes, FABD and FDQA, are designed in detail. The design of logic nodes includes the design of input and output ports and the block diagram of algorithm implementation within the nodes. All logical nodes are instantiated, and the logical nodes are interrelated. Then the software phase-locked loop module, current control module and power control module are designed, and the relationship between the above modules and logic nodes is analyzed. Finally, the simulation model of PQ control is built on MATLAB/SIMULINK platform. The simulation verifies the functions of voltage phase locking, current following, active power and reactive power following, etc. The relationship between simulation waveform and logic node is pointed out. (2) the design of logic node can be applied to other examples. According to the design method of the above logic nodes, combined with the IEC61499 standard, taking substation bus interlock as an example, a logic function block based on IEC61850/61499 is designed through the specific mapping between IEC61850 model and IEC61499 model, and the function block is interoperable. Configurable and reusable. This paper mainly introduces CILO_FB and CSWIFB, designs the state machine and its algorithm in detail, and verifies the correctness of the function block. At the same time, it is convenient to design the whole bus interlocking system. Finally, the locking system is designed on FBDK platform and the correctness of the system is verified by simulation.
【學位授予單位】：湘潭大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM46
本文編號：2190510
[Abstract]:With the development and maturity of power electronics technology, distributed generation technology and microgrid technology, more and more research on the power supply quality, microgrid control technology and energy dispatch among multi-microgrid has been carried out. The research on the reliability and flexibility of microgrid power supply is mainly focused on the control problem of distributed power converter in microgrid. The control strategy and its control algorithm become the key to the research. At the same time, with the continuous expansion of IEC61850 standard application, the interoperability of power electronic devices and their controllers in microgrid becomes more and more a development requirement. The combination of information communication technology and microgrid technology is of great significance to the exploration and construction of smart grid. In this paper, the control algorithm of converter is studied based on the IEC61850 standard and the example of microgrid interconnection. The content of this paper can be divided into two parts: (1) Information modeling and logical node design are the important foundation and prerequisite for the implementation of device interoperability. Taking the microgrid interconnected converter as an example, this paper analyzes three common control strategies of the converter, the design process of the PQ control algorithm and the design of the current control loop, and obtains the corresponding PQ control algorithm structure diagram. According to the structure diagram of the control algorithm, the information interaction model of the control algorithm is designed, and the specific interactive process of the information flow is analyzed. The functional logic nodes FPID and FSPT in the model, the arithmetic logic nodes FOPE0 / FOPE1 and FOPE2, and the commutation logic nodes, FABD and FDQA, are designed in detail. The design of logic nodes includes the design of input and output ports and the block diagram of algorithm implementation within the nodes. All logical nodes are instantiated, and the logical nodes are interrelated. Then the software phase-locked loop module, current control module and power control module are designed, and the relationship between the above modules and logic nodes is analyzed. Finally, the simulation model of PQ control is built on MATLAB/SIMULINK platform. The simulation verifies the functions of voltage phase locking, current following, active power and reactive power following, etc. The relationship between simulation waveform and logic node is pointed out. (2) the design of logic node can be applied to other examples. According to the design method of the above logic nodes, combined with the IEC61499 standard, taking substation bus interlock as an example, a logic function block based on IEC61850/61499 is designed through the specific mapping between IEC61850 model and IEC61499 model, and the function block is interoperable. Configurable and reusable. This paper mainly introduces CILO_FB and CSWIFB, designs the state machine and its algorithm in detail, and verifies the correctness of the function block. At the same time, it is convenient to design the whole bus interlocking system. Finally, the locking system is designed on FBDK platform and the correctness of the system is verified by simulation.
【學位授予單位】：湘潭大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM46
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