CN1988404A - 调整电力线通信系统中不同相位之间的相位的设备 - Google Patents

调整电力线通信系统中不同相位之间的相位的设备 Download PDF

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CN1988404A
CN1988404A CNA2006101645184A CN200610164518A CN1988404A CN 1988404 A CN1988404 A CN 1988404A CN A2006101645184 A CNA2006101645184 A CN A2006101645184A CN 200610164518 A CN200610164518 A CN 200610164518A CN 1988404 A CN1988404 A CN 1988404A
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data
signal
equipment
electric power
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崔峻会
金仁焕
张升起
李俊熹
李柱汉
金志勋
柳浩晶
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Samsung Electronics Co Ltd
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/0001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using modification of a parameter of the network power signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

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Abstract

一种在电力线通信(PLC)系统中调整不同相位之间的相位差的设备，所述设备包括：电力信号阻止单元，阻止电力信号但允许数据信号在三相电力线上的两个不同相位之间通过；和数据信号延迟单元，将数据信号延迟所述两个不同相位之间的相位差。因此，可通过在PLC系统中采用相位调整设备来防止在不同相位之间的数据传输中的数据冲突和时间延迟，从而改善PLC的性能。

Description

调整电力线通信系统中不同相位之间的相位的设备
本申请要求于2005年12月19日在韩国知识产权局提交的第2005-125451号韩国专利申请的优先权，该申请完全公开于此以资参考。
技术领域
本发明涉及一种数据传输，更具体地讲，涉及一种在电力线通信(PLC)系统中调整不同相位之间的相位差的设备。
背景技术
在使用三相四线的电力线通信(PLC)系统中，邻近相位移相120度。因此，当在相同相位之间传输数据时，数据可能与从不同相位传输的数据冲突，当在不同相位之间传输数据时，可能发生使数据传输延迟到下一周期的时间延迟。
发明内容
本发明提供一种在使用三相四线的电力线通信(PLC)系统中调整不同相位之间的相位差的设备，从而防止了在不同相位中的数据冲突和时间延迟。
根据本发明的一方面，提供了一种在电力线通信系统中使用的相位调整设备，所述设备包括：电力信号阻止单元，阻止电力信号但允许数据信号在三相电力线上的两个不同相位之间通过；和数据信号延迟单元，将数据信号延迟所述两个不同相位之间的相位差。
数据信号的频率通常高于电力信号的频率。电力信号阻止单元可包括电容器，所述电容器具有阻止低频的电力信号但允许高频的数据信号通过它的频率特性。
数据信号延迟单元可包括：第一信号传输单元，将从作为所述两个不同相位中的一个的相位A传输的数据信号延迟相位A与另一相位B之间的相位差，并将延迟的数据信号传输到相位B；和第二信号传输单元，将从相位B传输的数据信号延迟相位B和A之间的相位差，并将延迟的数据信号传输到相位A。
第一信号传输单元可包括：隔离器，阻止从相位B传输的数据信号；和相位延迟器，将从相位A传输的数据信号延迟相位A和B之间的相位差。
相位延迟器优选地将数据信号在所有可用频率处延迟固定量的时间。
相位延迟器最优选地包括Bessel类型的滤波器。
附图说明
通过参照附图对本发明示例性实施例的详细描述，本发明的以上和其他方面及优点将变得更加清楚，其中：
图1是使用三相四线的电力线通信(PLC)系统的示图；
图2是图1中示出的PLC系统的等效电路的电路图；
图3是示出PLC系统的相位T和S之间的连接的示图；
图4是示出在图3中所示的相位T和S之间通过电容器150的连接的示图；
图5是用于PLC的信号的波形图；
图6是示出在图4示出的系统中在相同相位上PLC设备之间建立通信的示图；
图7是示出在图4中示出的系统中在不同的相位上PLC设备之间建立通信的示图。
图8是根据本发明实施例的相位调整设备的方框图；
图9是根据本发明另一实施例的相位调整设备的方框图。
图10是根据本发明实施例的采用相位调整设备的PLC系统中在相同相位上PLC设备之间交换的数据信号的波形图；和
图11是根据本发明实施例的采样相位调整设备的PLC系统中在不同相位上PLC设备之间交换的数据信号的波形图。
具体实施方式
现在将参照附图来描述根据本发明实施例的在电力线通信(PLC)系统中使用的相位调整设备。
图1是使用三相四线的PLC系统的示图。参照图1，所述PLC系统包括无极线N以及移相120度的三个不同的相位R、S和T。
在图1中，L#1连接相位T和无极线N之间的负载，L#2连接相位S和无极线N之间的负载，L#3连接相位R和无极线N之间的负载。
图2是在图1中示出的PLC系统的等效电路的电路图。不同的三个相位R、S和T移相120度。当每相的最大电压是220V时，满足下面的等式：
V a = 220 * sin ( ωt - 4 π 3 ) . . . ( 1 )
V b = 220 * sin ( ωt - 2 π 3 ) . . . ( 2 )
Vc＝220*sin(ωt)    …(3)
从等式(1)到(3)，注意到，三个相位R、S和T移相
Figure A20061016451800053
弧度，即，120度。
在等式(1)到(3)中使用的ω表示电力信号的角频率，满足下面的等式：
ω＝2πf    …(4)
其中，f表示电力信号的频率。通常，电力信号具有50Hz到60Hz的低频。
作为示例，图3是示出用于PLC系统的相位T和S之间的连接的示图。参照图3，需要用于连接相位T和S的连接器100来在电压Vc的相位T上的PLC设备和电压Vb的相位S上的PLC设备之间建立通信。
图4是示出通过电容器150在图3所示的相位T和S之间建立连接的示图。电容器150具有阻止低频信号但允许高频信号通过它的频率特性。优选的，在PLC中使用的数据信号的频率高于电力信号的频率。
图5是在PLC中使用的信号的波形图。在图5中，低频信号表示电力信号，高频信号表示数据信号。
如图4所示，可通过使用电容器来阻止电力信号并允许数据信号通过相位T和S之间，所述电容器具有阻止低频的电力信号但允许高频的数据信号通过它的频率特性。
图6是示出在图4示出的系统中在相同相位上PLC设备之间建立通信的示图。参照图6，在L#1上的a和b设备之间、以及在L#2上的设备c和d之间建立通信。在这种情况下，在L#1和L#2中的数据传输段移相L#1和L#2中的电力信号之间的相位差。参照图6，如果在L#1中的TDMA段中从设备a向设备b传输数据，则所述数据可能与在L#2中的TDMA段中的设备c和d之间传输的数据冲突。
图7是示出在图4中示出的系统中在不同的相位上PLC设备之间建立通信的示图。详细地讲，图7示出在L#1上的设备a和L#2上的设备c之间建立的数据通信。
参照图7，L#1的信标周期与L#2的信标周期不对应。为了将数据从L#2的TDMA段传输到设备a，设备c确定是否将时隙分配给L#1的TDMA段，然后将数据传输到设备a。如果在设备c从设备a接收数据的相同段中没有分配时隙，则设备c不能将数据传输到设备a，因此在下一TDMA段将数据传输到设备a，从而引起时间延迟。
图8是根据本发明实施例的相位调整设备200的方框图。可通过在图3示出的连接器100的地方使用相位调整设备200来防止不同相位之间的数据冲突和时间延迟。
参照图8，相位调整设备200可包括电力信号阻止单元210和数据信号延迟单元220。
电力信号阻止单元210阻止不同相位之间的电力信号但允许不同相位之间的数据信号通过。数据信号延迟单元220将数据信号的传输延迟两个相位上的电力信号之间的相位差。
图9是根据本发明的相位调整设备200的另一实施例的方框图。在图9中，假定电力信号阻止单元210连接相位A并且数据信号延迟单元220连接相位B。
电力信号阻止单元210可包括电容器211，所述电容器211具有阻止低频的电力信号但允许高频的数据信号通过它的频率特性。
数据信号延迟单元220可包括第一信号传输单元230和第二信号传输单元240。第一信号传输单元230将从相位A接收的数据信号延迟相位A和B之间的相位差，并将延迟的数据信号传输到相位B。第二信号传输单元240将从相位B接收的数据信号延迟相位B和A之间的相位差，并将延迟的数据信号传输到相位A。
第一信号传输单元230可包括第一隔离器232和第一相位延迟器234，第二信号传输单元240可包括第二隔离器242和第二相位延迟器244。第一隔离器232和第二隔离器242分别阻止从相位B和A接收的数据信号，从而防止数据信号相互干扰。第一相位延迟器234将从相位A接收的数据信号延迟相位A和B之间的相位差，并传输延迟的数据信号。第二延迟器244将从相位B接收的数据信号延迟相位B和A之间的相位差，并传输延迟的数据信号。第一隔离器232和第一相位延迟器234的位置，以及第二隔离器242和第二相位延迟器244的位置可被转换。在这种情况下，它们的功能、功耗和操作没有改变。
优选的，延迟器234和244被构造以使所有可用频率处的群延迟一致。根据本发明的实施例，第一相位延迟器234和第二相位延迟器244可包括Bessel类型的滤波器，所述Bessel类型的滤波器将数据信号在所有可用频率处延迟固定量的时间。
图10是根据本发明实施例的采用相位调整设备200的PLC系统中在相同相位上PLC设备之间交换的数据信号的波形图。参照图10，将L#1中产生的数据信号延迟L#1和L#2之间的相位差，并将延迟的信号传输到L#2，从而防止数据信号之间的冲突。
图11是根据本发明实施例的采样相位调整设备200的PLC系统中不同相位上PLC设备之间交换的数据信号的波形图。参照图11，L#1中的信标段与L#2中的信标段相对应。在信标段中，在设备之间生成关于为CSMA段和TDMA段分配时隙的协议。因此，由于可预先在信标段中为TDMA段分配时隙，所以在设备将数据传输到设备c之后，设备c可在设备a将数据传输到设备c的相同的TDMA段中将数据传输到设备a，从而防止时间延迟。
可通过在PLC系统中采用根据本发明的相位调整设备来防止不同相位之间的时间延迟和数据冲突，从而改善PLC的性能。
尽管参照本发明的示例性实施例具体显示和描述了本发明，但是本领域的技术人员应理解，在不脱离权利要求限定的本发明的精神和范围的情况下，可对在形式和细节上对其进行各种改变。

Claims (7)

1、一种在电力线通信系统中使用的相位调整设备，包括：
电力信号阻止单元，阻止电力信号但允许数据信号在三相电力线上的两个不同相位之间通过；和
数据信号延迟单元，将数据信号延迟所述两个不同相位之间的相位差。
2、如权利要求1所述的设备，其中，数据信号的频率高于电力信号的频率。
3、如权利要求2所述的设备，其中，电力信号阻止单元包括电容器，所述电容器具有阻止低频的电力信号但允许高频的数据信号通过它的频率特性。
4、如权利要求1所述的设备，其中，数据信号延迟单元包括：
第一信号传输单元，将从作为所述两个不同相位中的一个的相位A传输的数据信号延迟相位A与另一相位B之间的相位差，并将延迟的数据信号传输到相位B；和
第二信号传输单元，将从相位B传输的数据信号延迟相位B和A之间的相位差，并将延迟的数据信号传输到相位A。
5、如权利要求4所述的设备，其中，第一信号传输单元包括：
隔离器，阻止从相位B传输的数据信号；和
相位延迟器，将从相位A传输的数据信号延迟相位A和B之间的相位差。
6如权利要求5所述的设备，其中，相位延迟器将数据信号在所有可用频率处延迟固定量的时间。
7、如权利要求6所述的设备，其中，相位延迟器包括Bessel类型的滤波器。
CNA2006101645184A 2005-12-19 2006-12-06 调整电力线通信系统中不同相位之间的相位的设备 Pending CN1988404A (zh)

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