[总结]9i RAC LMON: terminating instance due to error 29702

基本配置:

Linux AS3.0 内核版本: 2.4.21-37.ELsmp
Oracle 9.2.0.4
升级到Oracle9.2.0.7 , RAC , 两节点。 clusterware9204软件安装的 。

后来的查询发现Oracle 9.2.0.4 RAC 系统升级到Oracle9.2.0.7 , Oracle RDBMS Software 是可以升级到Oracle9.2.0.7,但是Oracle9.2.0.7 Patchset 确实没有ORACM Cluster管理软件的升级版,是Oracle的一个bug 9.2.0.7.0 Bug 4163445, 只有从Oracle9.2.0.6 Patchset上 升级Oracle9.2.0.4 Clusterware软件ORACM (丛Oracle CM Log 中可以看到Oracle9.2.0.4 版本下安装的ORACM版本为 oracm 9.2.0.2.0, 9.2.0.7 补丁没有升级ORACM版本,Oracle9.2.0.6 Patch升级的版本是 oracm 9.2.0.6.0.52 . 注意的一点是所有升级动作一定要严格按照Readme来操作,当然OracleReadme也不一定都考虑到了,这个问题就是一个例子。


http://www.itpub.net/viewthread.php?tid=922265&extra=&highlight=%2Btolywang&page=3 9.2.0.7.0 Bug 4163445

问题描述:

出现的问题描述如下 (节点1 以及节点 2 交替每隔58天左右实例crash一次)

alter_orcl1.log
-------------------------------------------------------------------------------------------------


Sat Jan 5 18:44:19 2008
ARC1: Evaluating archive log 1 thread 1 sequence 122
ARC1: Beginning to archive log 1 thread 1 sequence 122
Creating archive destination LOG_ARCHIVE_DEST_1: '/ocfs_arch1/orcl/1_122.dbf'
ARC1: Completed archiving log 1 thread 1 sequence 122
Sat Jan 5 19:36:06 2008
Thread 1 advanced to log sequence 124
Current log# 4 seq# 124 mem# 0: /ocfs_ctrl_redo/orcl/redo04.log
Current log# 4 seq# 124 mem# 1: /ocfs_data/orcl/redo04b.log
Sat Jan 5 19:36:06 2008
ARC1: Evaluating archive log 3 thread 1 sequence 123
ARC1: Beginning to archive log 3 thread 1 sequence 123
Creating archive destination LOG_ARCHIVE_DEST_1: '/ocfs_arch1/orcl/1_123.dbf'
ARC1: Completed archiving log 3 thread 1 sequence 123
Sat Jan 5 19:45:15 2008
Errors in file /u01/product/admin/orcl/bdump/orcl1_lmon_14214.trc:
ORA-29702: error occurred in Cluster Group Service operation
Sat Jan 5 19:45:15 2008
LMON: terminating instance due to error 29702
Sat Jan 5 19:45:16 2008
System state dump is made for local instance
Sat Jan 5 19:45:20 2008
Instance terminated by LMON, pid = 14214
Sat Jan 5 19:54:53 2008
Starting ORACLE instance (normal)
Sat Jan 5 19:54:53 2008
Global Enqueue Service Resources = 26694, pool = 4
Sat Jan 5 19:54:53 2008
Global Enqueue Service Enqueues = 39350
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
SCN scheme 2
Using log_archive_dest parameter default value
LICENSE_MAX_USERS = 0
SYS auditing is disabled
Starting up ORACLE RDBMS Version: 9.2.0.7.0.
System parameters with non-default values:
processes = 1000
timed_statistics = FALSE
resource_limit = TRUE
shared_pool_size = 419430400
large_pool_size = 33554432
java_pool_size = 33554432







$ vi /u01/product/admin/orcl/bdump/orcl1_lmon_14214.trc
=============



/u01/product/admin/orcl/bdump/orcl1_lmon_14214.trc
Oracle9i Enterprise Edition Release 9.2.0.7.0 - Production
With the Partitioning, Real Application Clusters, OLAP and Oracle Data Mining options
JServer Release 9.2.0.7.0 - Production
ORACLE_HOME = /u01/product/oracle
System name: Linux
Node name: DELL-RAC01
Release: 2.4.21-37.ELsmp
Version: #1 SMP Wed Sep 7 13:28:55 EDT 2005
Machine: i686
Instance name: orcl1
Redo thread mounted by this instance: 0
Oracle process number: 4
Unix process pid: 14214, image: oracle@DELL-RAC01 (LMON)

*** SESSION ID
3.1) 2007-12-31 12:07:45.591
GES IPC: Receivers 3 Senders 3
GES IPC: Buffers Receive 1000 Send (i:2230 b:2230) Reserve 1000
GES IPC: Msg Size Regular 396 Batch 2048
Batch msg size = 2048
Batching factor: enqueue replay 48, ack 53
Batching factor: cache replay 34 size per lock 56
kjxggin: receive buffer size = 32768
kjxgmin: SKGXN ver (2 1 Oracle 9i Reference CM)
CMCLI WARNING: CMInitContext: init ctx(0xb6d93f8)
*** 2007-12-31 12:07:49.396
kjxgmrcfg: Reconfiguration started, reason 1
kjxgmcs: Setting state to 0 0.
*** 2007-12-31 12:07:49.396
Name Service frozen
kjxgmcs: Setting state to 0 1.
kjfcpiora: publish my weight 122787
kjxgmps: proposing substate 2
kjxgmcs: Setting state to 1 2.
Performed the unique instance identification check
kjxgmps: proposing substate 3
kjxgmcs: Setting state to 1 3.
Name Service recovery started
Deleted all dead-instance name entries
kjxgmps: proposing substate 4
kjxgmcs: Setting state to 1 4.
Multicasted all local name entries for publish
Replayed all pending requests
kjxgmps: proposing substate 5
kjxgmcs: Setting state to 1 5.
Name Service normal
Name Service recovery done
*** 2007-12-31 12:07:49.611
kjxgmps: proposing substate 6
kjxgmcs: Setting state to 1 6.
*** 2007-12-31 12:07:49.832
*** 2007-12-31 12:07:49.832
Reconfiguration started (old inc 0, new inc 1)
Synchronization timeout interval: 600 sec
List of nodes:
0
Global Resource Directory frozen
node 0
release 9 2 0 7
* kjshashcfg: I'm the only node in the cluster (node 0)
Active Sendback Threshold = 50 %
Communication channels reestablished
Master broadcasted resource hash value bitmaps
Non-local Process blocks cleaned out
Resources and enqueues cleaned out
Resources remastered 0
0 GCS shadows traversed, 0 cancelled, 0 closed
0 GCS resources traversed, 0 cancelled
set master node info
Submitted all remote-enqueue requests
Update rdomain variables
Dwn-cvts replayed, VALBLKs dubious
All grantable enqueues granted
*** 2007-12-31 12:07:50.121
0 GCS shadows traversed, 0 replayed, 0 unopened
Submitted all GCS cache requests
0 write requests issued in 0 GCS resources
0 PIs marked suspect, 0 flush PI msgs

ORACM Log 当时的信息: ERROR: WriteEventPort: write failed with error 32

------------------------------------------------------------

Debug Hang :ClientProcListener (PID=14257) UnRegistered with watchdog daemon. {Sat Jan 5 19:45:16 2008 }^M
>WARNING: ReadCommPort: socket closed by peer on recv()., tid = ClientProcListener:688145 file = unixinc.c, line = 767 {Sat Jan 5 19:45:16 2008 }^M
>ERROR: WriteEventPort: write failed with error 32., tid = ClientProcListener:688145 file = unixinc.c, line = 915 {Sat Jan 5 19:45:16 2008 }^M
Debug Hang :ClientProcListener (PID=14261) UnRegistered with watchdog daemon. {Sat Jan 5 19:45:16 2008 }^M
>WARNING: ReadCommPort: socket closed by peer on recv()., tid = ClientProcListener:622615 file = unixinc.c, line = 767 {Sat Jan 5 19:45:16 2008 }^M
Debug Hang :ClientProcListener (PID=14255) UnRegistered with watchdog daemon. {Sat Jan 5 19:45:16 2008 }^M
>WARNING: ReadCommPort: socket closed by peer on recv()., tid = ClientProcListener:557077 file = unixinc.c, line = 767 {Sat Jan 5 19:45:16 2008 }^M

Diag trace log :

/u01/product/admin/orcl/bdump/orcl2_diag_14211.trc

Oracle9i Enterprise Edition Release 9.2.0.7.0 - Production

With the Partitioning, Real Application Clusters, OLAP and Oracle Data Mining options

JServer Release 9.2.0.7.0 - Production

ORACLE_HOME = /u01/product/oracle

System name: Linux

Node name: DELL-RAC02

Release: 2.4.21-37.ELsmp

Version: #1 SMP Wed Sep 7 13:28:55 EDT 2005

Machine: i686

Instance name: orcl2

Redo thread mounted by this instance: 0

Oracle process number: 3

Unix process pid: 14211, image: oracle@DELL-RAC02 (DIAG)

*** SESSION ID:(2.1) 2008-01-16 12:16:14.524

CMCLI WARNING: CMInitContext: init ctx(0xb9115f4)

kjzcprt:rcv port created

Node id: 1

List of nodes: 0, 1,

*** 2008-01-16 12:16:14.526

Reconfiguration starts [incarn=0]

I'm the voting node

Send my bitmap to master 0

Rcfg confirmation is received from master 0

I agree with the rcfg confirmation

*** 2008-01-16 12:16:25.233

Reconfiguration completes [incarn=2]

*** 2008-01-19 04:50:21.933

Instance is terminating by process 14215 [ospid=oracle@DELL-RAC02 (LMON)]

Performing diagnostic data dump for this instance

CMCLI WARNING: CommonContextCleanup: closing comm port

DIAG detachs from CM

error 29723 detected in background process

OPIRIP: Uncaught error 447. Error stack:

ORA-00447: fatal error in background process

ORA-29723: Failed to attach to the global enqueue service (status=32)

metalink上面的错误描述上看,似乎是由于rac环境两个实例的libskgxn9.so不一致造成的。

处理方法:

1. 由于是Oracle9.2.0.4 升级到Oracle9.2.0.7 , 9207没有ORACM的升级版本软件,只有RDBMS的软件。 所以还必须通过9206patchset来升级oracm9.2.0.2oracm9.2.0.6.0.52版本。 注意了,一定要严格按照readme来操作。

2. 当然升级Oracle RDBMS , Oracm9.2.0.6之后还需要运行一些catproc.sql ……等脚本来更新数据字典,这些在readme上都有。

3. 有些bug是没有公布的,在google,baidu都不能找到,必须到metalink上才能看到。而且不能仅仅通过alert log ,还要结合trc log , diag log cm log 文件等。

Bug 4390716 Linux: "CMCLI WARNING" messages after applying 9.2.0.6 / 7

This note gives a brief overview of bug 4390716.

Affects:

Product (Component)

Oracle Server (Rdbms)

Range of versions believed to be affected

Versions >= 9.2.0.6

Versions confirmed as being affected

  • 9.2.0.6
  • 9.2.0.7

Platforms affected

  • Linux 32bit

It is believed to be a regression in default behaviour thus:
Regression introduced in 9.2.0.6

Fixed:

This issue is fixed in

  • (None Specified)

Symptoms:

Related To:

  • RAC (Real Application Clusters) / OPS

Description


 

 

运行这些bug修复的命令:

After applying 9.2.0.6 or 9.2.0.7 Patch Set on Linux

platforms then RAC installations may start reporting

numerous errors to trace files of the form.:

CMCLI WARNING: CMInitContext: init ctx(0xae5c9a4)

CMCLI WARNING: CommonContextCleanup: closing comm port

This can lead to disk full and instance crash scenarios.

Workaround:

After installation of the Patch Set ensure that the

folowing steps are executed on ALL nodes of the RAC

cluster:

cd $ORACLE_HOME/rdbms/lib

Shut down all the instances in the OH

make -f ins_rdbms.mk rac_on ioracle

具体执行:

DELL-RAC01$

DELL-RAC01$make -f ins_rdbms.mk rac_on ioracle

rm -f /u01/product/oracle/lib/libskgxp9.so

cp /u01/product/oracle/lib//libskgxpu.so /u01/product/oracle/lib/libskgxp9.so

cp /u01/product/oracle/lib/libcmdll.so /u01/product/oracle/lib/libskgxn9.so

/usr/bin/ar cr /u01/product/oracle/rdbms/lib/libknlopt.a /u01/product/oracle/rdbms/lib/kcsm.o

- Linking Oracle

rm -f /u01/product/oracle/rdbms/lib/oracle

gcc -o /u01/product/oracle/rdbms/lib/oracle -L/u01/product/oracle/rdbms/lib/ -L/u01/product/oracle/lib/ -L/u01/product/oracle/lib/stubs/ -Wl,-E `test -f /u01/product/oracle/rdbms/lib/skgaioi.o && echo /u01/product/oracle/rdbms/lib/skgaioi.o` /u01/product/oracle/rdbms/lib/opimai.o /u01/product/oracle/rdbms/lib/ssoraed.o /u01/product/oracle/rdbms/lib/ttcsoi.o /u01/product/oracle/lib/nautab.o /u01/product/oracle/lib/naeet.o /u01/product/oracle/lib/naect.o /u01/product/oracle/lib/naedhs.o /u01/product/oracle/rdbms/lib/config.o -lserver9 -lodm9 -lskgxp9 -lskgxn9 -lclient9 -lvsn9 -lwtcserver9 -lcommon9 -lgeneric9 /u01/product/oracle/rdbms/lib/defopt.o -lknlopt `if /usr/bin/ar tv /u01/product/oracle/rdbms/lib/libknlopt.a | grep xsyeolap.o > /dev/null 2>&1 ; then echo "-loraolap9" ; fi` -lslax9 -lpls9 -lplp9 -lserver9 -lclient9 -lvsn9 -lwtcserver9 -lcommon9 -lgeneric9 -lknlopt -lslax9 -lpls9 -lplp9 -ljox9 -lserver9 -locijdbcst9 -lwwg9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -lnro9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -lmm -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -lnro9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -ltrace9 -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 `if /usr/bin/ar tv /u01/product/oracle/rdbms/lib/libknlopt.a | grep "kxmnsd.o" > /dev/null 2>&1 ; then echo " " ; else echo "-lordsdo9"; fi` -lctxc9 -lctx9 -lzx9 -lgx9 -lctx9 -lzx9 -lgx9 -lordimt9 -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 -lsnls9 -lunls9 -lxsd9 -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 `cat /u01/product/oracle/lib/sysliblist` -Wl,-rpath,/u01/product/oracle/lib:/lib/i686:/lib:/usr/lib -lm `cat /u01/product/oracle/lib/sysliblist` -ldl -lm `test -f /u01/product/oracle/rdbms/lib/skgaioi.o && echo -laio`

mv -f /u01/product/oracle/bin/oracle /u01/product/oracle/bin/oracleO

mv /u01/product/oracle/rdbms/lib/oracle /u01/product/oracle/bin/oracle

chmod 6751 /u01/product/oracle/bin/oracle

DELL-RAC01$q

-bash: q: command not found

DELL-RAC01$

DELL-RAC02$

DELL-RAC02$cd $ORACLE_HOME/rdbms/lib

DELL-RAC02$make -f ins_rdbms.mk rac_on ioracle

rm -f /u01/product/oracle/lib/libskgxp9.so

cp /u01/product/oracle/lib//libskgxpu.so /u01/product/oracle/lib/libskgxp9.so

cp /u01/product/oracle/lib/libcmdll.so /u01/product/oracle/lib/libskgxn9.so

/usr/bin/ar cr /u01/product/oracle/rdbms/lib/libknlopt.a /u01/product/oracle/rdbms/lib/kcsm.o

- Linking Oracle

rm -f /u01/product/oracle/rdbms/lib/oracle

gcc -o /u01/product/oracle/rdbms/lib/oracle -L/u01/product/oracle/rdbms/lib/ -L/u01/product/oracle/lib/ -L/u01/product/oracle/lib/stubs/ -Wl,-E `test -f /u01/product/oracle/rdbms/lib/skgaioi.o && echo /u01/product/oracle/rdbms/lib/skgaioi.o` /u01/product/oracle/rdbms/lib/opimai.o /u01/product/oracle/rdbms/lib/ssoraed.o /u01/product/oracle/rdbms/lib/ttcsoi.o /u01/product/oracle/lib/nautab.o /u01/product/oracle/lib/naeet.o /u01/product/oracle/lib/naect.o /u01/product/oracle/lib/naedhs.o /u01/product/oracle/rdbms/lib/config.o -lserver9 -lodm9 -lskgxp9 -lskgxn9 -lclient9 -lvsn9 -lwtcserver9 -lcommon9 -lgeneric9 /u01/product/oracle/rdbms/lib/defopt.o -lknlopt `if /usr/bin/ar tv /u01/product/oracle/rdbms/lib/libknlopt.a | grep xsyeolap.o > /dev/null 2>&1 ; then echo "-loraolap9" ; fi` -lslax9 -lpls9 -lplp9 -lserver9 -lclient9 -lvsn9 -lwtcserver9 -lcommon9 -lgeneric9 -lknlopt -lslax9 -lpls9 -lplp9 -ljox9 -lserver9 -locijdbcst9 -lwwg9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -lnro9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -lmm -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -lnro9 `cat /u01/product/oracle/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9 -ln9 -lnl9 -ltrace9 -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 `if /usr/bin/ar tv /u01/product/oracle/rdbms/lib/libknlopt.a | grep "kxmnsd.o" > /dev/null 2>&1 ; then echo " " ; else echo "-lordsdo9"; fi` -lctxc9 -lctx9 -lzx9 -lgx9 -lctx9 -lzx9 -lgx9 -lordimt9 -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 -lsnls9 -lunls9 -lxsd9 -lnls9 -lcore9 -lnls9 -lcore9 -lnls9 -lxml9 -lcore9 -lunls9 -lnls9 `cat /u01/product/oracle/lib/sysliblist` -Wl,-rpath,/u01/product/oracle/lib:/lib/i686:/lib:/usr/lib -lm `cat /u01/product/oracle/lib/sysliblist` -ldl -lm `test -f /u01/product/oracle/rdbms/lib/skgaioi.o && echo -laio`

mv -f /u01/product/oracle/bin/oracle /u01/product/oracle/bin/oracleO

mv /u01/product/oracle/rdbms/lib/oracle /u01/product/oracle/bin/oracle

chmod 6751 /u01/product/oracle/bin/oracle

DELL-RAC02$

DELL-RAC02$

DELL-RAC02$

DELL-RAC02$

DELL-RAC02$cd

DELL-RAC02$

观察2周后发现没有出现过类似问题。原来 67 天一次的实例crash现象消失,log也恢复正常,cm log没有类似error 的错误出现。 Bug 问题解决。

整個過程參考 : http://www.itpub.net/viewthread.php?tid=922265&highlight=%2Btolywang

 

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/35489/viewspace-558261/,如需转载,请注明出处,否则将追究法律责任。

转载于:http://blog.itpub.net/35489/viewspace-558261/

安全帽与口罩检测数据集 一、基础信息 数据集名称:安全帽与口罩检测数据集 图片数量: - 训练集:1690张图片 - 验证集:212张图片 - 测试集:211张图片 - 总计:2113张实际场景图片 分类类别: - HelmetHelmet:戴安全帽的人员,用于安全防护场景的检测。 - personwithmask:戴口罩的人员,适用于公共卫生监测。 - personwith_outmask:未戴口罩的人员,用于识别未遵守口罩佩戴规定的情况。 标注格式:YOLO格式,包含边界框和类别标签,适用于目标检测任务。 数据格式:JPEG/PNG图片,来源于实际监控和场景采集,细节清晰。 二、适用场景 工业安全监控系统开发: 数据集支持目标检测任务,帮助构建自动检测人员是否佩戴安全帽的AI模型,适用于建筑工地、工厂等环境,提升安全管理效率。 公共卫生管理应用: 集成至公共场所监控系统,实时监测口罩佩戴情况,为疫情防控提供自动化支持,辅助合规检查。 智能安防与合规检查: 用于企业和机构的自动化安全审计,减少人工干预,提高检查准确性和响应速度。 学术研究与AI创新: 支持计算机视觉目标检测领域的研究,适用于安全与健康相关的AI模型开发和论文发表。 三、数据集优势 精准标注与实用性: 每张图片均经过标注,边界框定位准确,类别定义清晰,确保模型训练的高效性和可靠性。 场景多样性与覆盖性: 包含安全帽和口罩相关类别,覆盖工业、公共场所以及多种实际环境,样本丰富,提升模型的泛化能力和适应性。 任务适配性强: 标注兼容主流深度学习框架(如YOLO),可直接用于目标检测任务,便于快速集成和部署。 实际应用价值突出: 专注于工业安全和公共健康领域,为自动化监控、合规管理以及疫情防护提供可靠数据支撑,具有较高的社会和经济价值。
内容概要:本文围绕FOC电机控制代码实现与调试技巧在计算机竞赛中的应用,系统阐述了从基础理论到多场景优化的完整技术链条。文章深入解析了磁链观测器、前馈控制、代码可移植性等关键概念,并结合FreeRTOS多任务调度、滑动窗口滤波、数据校验与热仿真等核心技巧,展示了高实时性与稳定性的电机控制系统设计方法。通过服务机器人、工业机械臂、新能源赛车等典型应用场景,论证了FOC在复杂系统协同中的关键技术价值。配套的千行级代码案例聚焦分层架构与任务同步机制,强化工程实践能力。最后展望数字孪生、低代码平台与边缘AI等未来趋势,体现技术前瞻性。; 适合人群:具备嵌入式开发基础、熟悉C语言与实时操作系统(如FreeRTOS)的高校学生或参赛开发者,尤其适合参与智能车、机器人等综合性竞赛的研发人员(经验1-3年为佳)。; 使用场景及目标:① 掌握FOC在多任务环境下的实时控制实现;② 学习抗干扰滤波、无传感器控制、跨平台调试等竞赛实用技术;③ 提升复杂机电系统的问题分析与优化能力; 阅读建议:此资源强调实战导向,建议结合STM32等开发平台边学边练,重点关注任务优先级设置、滤波算法性能权衡与观测器稳定性优化,并利用Tracealyzer等工具进行可视化调试,深入理解代码与系统动态行为的关系。
【场景削减】拉丁超立方抽样方法场景削减(Matlab代码实现)内容概要:本文介绍了基于拉丁超立方抽样(Latin Hypercube Sampling, LHS)方法的场景削减技术,并提供了相应的Matlab代码实现。该方法主要用于处理不确定性问题,特别是在电力系统、可再生能源等领域中,通过对大量可能场景进行高效抽样并削减冗余场景,从而降低计算复杂度,提高优化调度等分析工作的效率。文中强调了拉丁超立方抽样在保持样本代表性的同时提升抽样精度的优势,并结合实际科研背景阐述了其应用场景与价值。此外,文档还附带多个相关科研方向的Matlab仿真案例和资源下载链接,涵盖风电、光伏、电动汽车、微电网优化等多个领域,突出其实用性和可复现性。; 适合人群:具备一定Matlab编程基础,从事电力系统、可再生能源、优化调度等相关领域研究的研究生、科研人员及工程技术人员。; 使用场景及目标:①应用于含高比例可再生能源的电力系统不确定性建模;②用于风电、光伏出力等随机变量的场景生成与削减;③支撑优化调度、风险评估、低碳运行等研究中的数据预处理环节;④帮助科研人员快速实现LHS抽样与场景削减算法,提升仿真效率与模型准确性。; 阅读建议:建议读者结合文中提供的Matlab代码进行实践操作,理解拉丁超立方抽样的原理与实现步骤,并参考附带的其他科研案例拓展应用思路;同时注意区分场景生成与场景削减两个阶段,确保在实际项目中正确应用该方法。
评论
成就一亿技术人!
拼手气红包6.0元
还能输入1000个字符  | 博主筛选后可见
 
红包 添加红包
表情包 插入表情
 条评论被折叠 查看
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值