间歇式次同步振荡及次同步控制互作用问题研究
发布时间：2018-07-26 16:07
【摘要】：次同步振荡是电力系统稳定问题之一。随着世界各国电力系统的发展,特别是我国高电压、大容量、长距离交直流输电的不断建设和规模化可再生能源的并网发电,由传统次同步振荡带来的新问题以及新的次同步振荡现象相继出现,这给电力系统稳定性研究又带来了新的挑战,本文围绕电力系统中出现的两种新的次同步振荡问题—间歇式次同步振荡(Intermittent Subsynchronous Oscillation, ISSO)和次同步控制互作用(Subsynchronous Control Interaction, SSCI)开展了如下研究： 大型火电机组集群经高压直流输电线路与交流混合串联补偿线路送出时可能引起频繁超越发电机轴系累积阈值的收敛型次同步振荡问题,本文称为间歇式次同步振荡SSCI。通过对比其与传统HVDC引起的次同步扭振相互作用的不同特性,本文详细分析了间歇式次同步振荡产生的根本原因和作用路径；基于经直流送出的单机无穷大系统,提出了一种确定电气阻尼对间歇式次同步振荡作用路径中各电参量敏感度的方法,由此可确定最敏感的扰动因素；紧密结合我国蒙东呼盟系统多年来存在和困扰的间歇式次同步振荡问题,搭建了该系统的5厂10机等效电磁暂态仿真模型,采用测试信号法分析了系统的电气阻尼特性,并基于上述分析确定的最敏感因素,提出了一种与实际振荡特性一致的间歇式次同步振荡的仿真模拟方法,这为所研发的抑制装置的阻尼特性仿真和实验验证提供了可行的仿真手段。 近年来的研究表明,含有双馈感应发电机的风力发电厂经固定串补线路远距离送出时会出现次同步控制互作用SSCI,可能引起风电机组的严重损坏。本文基于双馈感应风力发电机经固定串联补偿送出的单机无穷大系统,通过数学建模详细分析了次同步控制互作用产生的根本原因和作用路径,给出了发生次同步控制互作用的近似条件,提出了一种区分风机中可能出现的感应发电机效应和次同步控制互作用的方法；采用时域仿真法分析了风机风速、线路串补度以及双馈风机转子侧变流器控制器参数对次同步控制互作用的影响；基于其作用路径和相关控制器参数对振荡的影响分析,提出了抑制次同步控制互作用的阻断方法和附加阻尼方法,并对其有效性进行了时域仿真验证。 基于并联电压源型换流器的拓扑结构,本文提出一种采用次同步振荡动态稳定器(Subsynchronous Oscillation-Dynamic Stabilizer, SSO-DS)抑制次同步振荡的方法,并基于此提出一种无功电流次同步调制策略。详细介绍了这种控制策略的具体控制流程,并采用复转矩系数法详细推导了其能够提供的近似电气阻尼,分析了影响该阻尼正负和大小的相关因素。针对SSO-DS这种新的抑制装置,基于IEEE第一标准模型中由固定串补引发的次同步谐振问题,通过测试信号法和时域仿真法验证了所提出控制策略的有效性。 针对实际呼盟系统交直流并列输电方式和呼贝电厂存在的间歇式次同步振荡问题,分别提出了宽带通和窄带通SSDC的阻尼控制方法,详细分析了二者抑制间歇式次同步振荡的可行性。通过数学推导和仿真,对比分析了附加励磁阻尼控制器-SEDC与SSO-DS装置的响应时间以及阻尼转矩提供能力上的不同,对比分析了基于SVC拓扑结构的次同步谐振动态稳定器(Subsynchronous Resonance-Dynamic Stabilizer, SSR-DS)与SSO-DS抑制次同步振荡的阻尼能力,最后通过时域仿真法对比了SEDC、SSR-DS与SSO-DS阻尼间歇式次同步振荡的效果。 在以上理论与方法研究的基础上,综合考虑了响应速度、抑制效果以及占地面积等多方面因素后,本文建议呼贝电厂采用SSO-DS的方法,并为装置的测试搭建了实时数字—物理闭环仿真实验平台。介绍了仿真平台的结构和各部分的功能,提出了一种模拟转速传感器的方法用于转速测量卡与转速处理卡的闭环接入。利用该实时仿真环境,通过SSO-DS的输入输出特性测试验证了控制器设计的准确性；针对呼贝电厂间歇式次同步振荡问题,提出了一种测量SSO-DS有效阻尼区域的方法,并通过多个工况下的测试对控制器参数进行优化,最后通过时域仿真法验证了SSO-DS解决呼贝电厂次同步振荡问题的有效性。目前,合作研制的SSO-DS装置已用于呼贝电厂解决多年来困扰的次同步振荡问题,并已具有较好的抑制效果。
[Abstract]:Sub synchronous oscillation is one of the problems of power system stability. With the development of power systems in all countries in the world, especially the continuous construction of high voltage, large capacity, long distance AC and DC transmission and the grid connected generation of large-scale renewable energy, the new questions and new sub synchronous oscillations brought about by the traditional sub synchronous oscillation have appeared one after another. The research on the stability of power system has brought new challenges. In this paper, two new subsynchronous oscillations (Intermittent Subsynchronous Oscillation, ISSO) and sub synchronous control interaction (Subsynchronous Control Interaction, SSCI), which appear in the power system, are studied as follows:
The problem of convergent subsynchronous oscillation in a large thermal power plant cluster which is sent out of HVDC transmission lines and AC hybrid series compensation lines may cause frequent surpassing the cumulative threshold of the generator shafting. This paper is called intermittent sub synchronous oscillating SSCI. by comparing the different characteristics of the sub synchronous torsional vibration caused by the traditional HVDC. In this paper, the fundamental reason and the action path of the intermittent subsynchronous oscillation are analyzed in detail. Based on the single machine infinite system sent by direct current, a method is proposed to determine the sensitivity of the electrical damping to the electrical parameters of the intermittent subsynchronous oscillations, which can determine the most sensitive disturbance factors and closely combine with our Mongolia. The problem of intermittent subsynchronous oscillations in the East Hulun system has been existed for many years. The equivalent electromagnetic transient simulation model of the 5 plant and 10 machine is set up. The electrical damping characteristic of the system is analyzed by the test signal method. And based on the most sensitive factor determined by the above analysis, a kind of intermittent same same as the actual oscillation characteristic is put forward. The simulation method of step oscillation provides a feasible simulation method for the damping characteristic simulation and experimental verification of the developed device.
In recent years, the research shows that the wind power plant containing double fed induction generator will appear subsynchronous control interaction SSCI when the fixed series compensation line is sent out in long distance, which may cause serious damage to the wind turbine. This paper is based on the mathematical modeling of a single feed system which is sent out by the fixed series compensation for the doubly fed induction generator. The basic reason and the action path of the subsynchronous control interaction are analyzed. The approximate condition of the interaction of the sub synchronous control is given. A method to distinguish the induction generator effect and the subsynchronous control interaction in the fan is proposed, and the wind speed, the line series compensation and the wind speed are analyzed by the time domain simulation method. The influence of the controller parameters of the doubly fed fan rotor side converter on the subsynchronous control interaction; based on the influence analysis of the action path and the relative controller parameters on the oscillation, a blocking method and an additional damping method for the suppression of subsynchronous control interaction are proposed, and the validity of this method is verified by the time domain simulation.
Based on the topology of parallel voltage source converter, a method of subsynchronous oscillation using Subsynchronous Oscillation-Dynamic Stabilizer (SSO-DS) is proposed in this paper. Based on this, a subsynchronous modulation strategy for reactive current is proposed. The specific control flow of this control strategy is introduced in detail. The approximate electrical damping is derived by the complex torque coefficient method, and the related factors affecting the positive and negative damping of the damping are analyzed. Based on the new SSO-DS suppressor, the subsynchronous resonance problem caused by the fixed series compensation in the IEEE first standard model is verified by the test signal method and the time domain simulation method. The effectiveness of the proposed control strategy is proposed.
The damping control method of broadband pass and narrow band pass SSDC is put forward respectively, and the feasibility of the two suppression of intermittent subsynchronous oscillation is analyzed in detail. The additional excitation damping control is compared and analyzed by mathematical deduction and simulation. The response time of the device -SEDC and the SSO-DS device is different from the damping torque, and the damping energy of the sub synchronous oscillation (Subsynchronous Resonance-Dynamic Stabilizer, SSR-DS) and SSO-DS suppression Subsynchronous Oscillation Based on the SVC topology structure is compared and analyzed. Finally, the time domain simulation method is used to compare SEDC, SSR-DS, and SSR-DS. The effect of SSO-DS damping intermittent subsynchronous oscillation.
On the basis of the study of the above theory and method, after considering many factors such as response speed, inhibition effect and area, this paper proposes the method of SSO-DS in Hu Bei power plant, and builds a real time digital physical closed loop simulation experiment platform for the test of the device. A method of simulating rotational speed sensor is proposed for closed loop access of speed measurement card and speed processing card. Using this real-time simulation environment, the accuracy of the controller design is verified through the SSO-DS input and output characteristics test. A kind of effective damping zone for measuring SSO-DS is proposed for the intermittent sub synchronous oscillation of the Rebeck power plant. The method of domain is used to optimize the controller parameters through several tests. Finally, the validity of SSO-DS to solve the problem of subsynchronous oscillation is verified by time domain simulation. At present, the cooperative SSO-DS device has been used to solve the problem of subsynchronous oscillation in haobi power plant for many years, and has better suppression. Effect.
【学位授予单位】：华北电力大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TM712
本文编号：2146542
[Abstract]:Sub synchronous oscillation is one of the problems of power system stability. With the development of power systems in all countries in the world, especially the continuous construction of high voltage, large capacity, long distance AC and DC transmission and the grid connected generation of large-scale renewable energy, the new questions and new sub synchronous oscillations brought about by the traditional sub synchronous oscillation have appeared one after another. The research on the stability of power system has brought new challenges. In this paper, two new subsynchronous oscillations (Intermittent Subsynchronous Oscillation, ISSO) and sub synchronous control interaction (Subsynchronous Control Interaction, SSCI), which appear in the power system, are studied as follows:
The problem of convergent subsynchronous oscillation in a large thermal power plant cluster which is sent out of HVDC transmission lines and AC hybrid series compensation lines may cause frequent surpassing the cumulative threshold of the generator shafting. This paper is called intermittent sub synchronous oscillating SSCI. by comparing the different characteristics of the sub synchronous torsional vibration caused by the traditional HVDC. In this paper, the fundamental reason and the action path of the intermittent subsynchronous oscillation are analyzed in detail. Based on the single machine infinite system sent by direct current, a method is proposed to determine the sensitivity of the electrical damping to the electrical parameters of the intermittent subsynchronous oscillations, which can determine the most sensitive disturbance factors and closely combine with our Mongolia. The problem of intermittent subsynchronous oscillations in the East Hulun system has been existed for many years. The equivalent electromagnetic transient simulation model of the 5 plant and 10 machine is set up. The electrical damping characteristic of the system is analyzed by the test signal method. And based on the most sensitive factor determined by the above analysis, a kind of intermittent same same as the actual oscillation characteristic is put forward. The simulation method of step oscillation provides a feasible simulation method for the damping characteristic simulation and experimental verification of the developed device.
In recent years, the research shows that the wind power plant containing double fed induction generator will appear subsynchronous control interaction SSCI when the fixed series compensation line is sent out in long distance, which may cause serious damage to the wind turbine. This paper is based on the mathematical modeling of a single feed system which is sent out by the fixed series compensation for the doubly fed induction generator. The basic reason and the action path of the subsynchronous control interaction are analyzed. The approximate condition of the interaction of the sub synchronous control is given. A method to distinguish the induction generator effect and the subsynchronous control interaction in the fan is proposed, and the wind speed, the line series compensation and the wind speed are analyzed by the time domain simulation method. The influence of the controller parameters of the doubly fed fan rotor side converter on the subsynchronous control interaction; based on the influence analysis of the action path and the relative controller parameters on the oscillation, a blocking method and an additional damping method for the suppression of subsynchronous control interaction are proposed, and the validity of this method is verified by the time domain simulation.
Based on the topology of parallel voltage source converter, a method of subsynchronous oscillation using Subsynchronous Oscillation-Dynamic Stabilizer (SSO-DS) is proposed in this paper. Based on this, a subsynchronous modulation strategy for reactive current is proposed. The specific control flow of this control strategy is introduced in detail. The approximate electrical damping is derived by the complex torque coefficient method, and the related factors affecting the positive and negative damping of the damping are analyzed. Based on the new SSO-DS suppressor, the subsynchronous resonance problem caused by the fixed series compensation in the IEEE first standard model is verified by the test signal method and the time domain simulation method. The effectiveness of the proposed control strategy is proposed.
The damping control method of broadband pass and narrow band pass SSDC is put forward respectively, and the feasibility of the two suppression of intermittent subsynchronous oscillation is analyzed in detail. The additional excitation damping control is compared and analyzed by mathematical deduction and simulation. The response time of the device -SEDC and the SSO-DS device is different from the damping torque, and the damping energy of the sub synchronous oscillation (Subsynchronous Resonance-Dynamic Stabilizer, SSR-DS) and SSO-DS suppression Subsynchronous Oscillation Based on the SVC topology structure is compared and analyzed. Finally, the time domain simulation method is used to compare SEDC, SSR-DS, and SSR-DS. The effect of SSO-DS damping intermittent subsynchronous oscillation.
On the basis of the study of the above theory and method, after considering many factors such as response speed, inhibition effect and area, this paper proposes the method of SSO-DS in Hu Bei power plant, and builds a real time digital physical closed loop simulation experiment platform for the test of the device. A method of simulating rotational speed sensor is proposed for closed loop access of speed measurement card and speed processing card. Using this real-time simulation environment, the accuracy of the controller design is verified through the SSO-DS input and output characteristics test. A kind of effective damping zone for measuring SSO-DS is proposed for the intermittent sub synchronous oscillation of the Rebeck power plant. The method of domain is used to optimize the controller parameters through several tests. Finally, the validity of SSO-DS to solve the problem of subsynchronous oscillation is verified by time domain simulation. At present, the cooperative SSO-DS device has been used to solve the problem of subsynchronous oscillation in haobi power plant for many years, and has better suppression. Effect.
【学位授予单位】：华北电力大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TM712
【参考文献】
相关期刊论文 前10条
1 毕天姝;孔永乐;肖仕武;张鹏;张涛;刘全;;大规模风电外送中的次同步振荡问题[J];电力科学与技术学报;2012年01期
2 刘其辉;贺益康;张建华;;交流励磁变速恒频双馈型异步发电机的稳态功率关系[J];电工技术学报;2006年02期
3 戚军;江全元;曹一家;;采用时滞广域测量信号的区间低频振荡阻尼控制器设计[J];电工技术学报;2009年06期
4 李伟;肖湘宁;赵洋;;无功发生源抑制次同步振荡的机理分析[J];电工技术学报;2011年04期
5 姚伟;文劲宇;程时杰;蒋林;;考虑时滞影响的SVC广域附加阻尼控制器设计[J];电工技术学报;2012年03期
6 吕世荣,刘晓鹏,郭强,夏道止;TCSC对抑制次同步谐振的机理分析[J];电力系统自动化;1999年06期
7 曹路,陈珩;可控串联补偿抑制次同步谐振的机理[J];电力系统自动化;2001年04期
8 高俊,丁洪发;TCSC的次频阻抗特性[J];电力系统自动化;2001年12期
9 韩光,童陆园,葛俊,耿俊成;TCSC抑制次同步谐振的机理分析[J];电力系统自动化;2002年02期
10 Mats Larsson,Christian Rehtanz;基于最优潮流的广域FACTS控制提高输电能力(英文)[J];电力系统自动化;2005年16期
相关博士学位论文 前2条
1 赵洋;静止同步串联补偿器控制策略及抑制次同步谐振的研究[D];华北电力大学（北京）;2009年
2 周宏林;大容量双馈式风力发电系统并网关键问题研究[D];清华大学;2011年
，本文编号：2146542
本文链接：https://www.wllwen.com/kejilunwen/dianlilw/2146542.html
