CN102710784A - Electric energy quality communication method applied to microgrid - Google Patents
Electric energy quality communication method applied to microgrid Download PDFInfo
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- 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
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- 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
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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
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Abstract
本发明公开了一种应用于微电网的电能质量通信方法，使用网口做为物理接口，基于TCP/IP协议进行数据传输，在电能质量装置上设置两个端口用于和后台监控系统之间传送数据，并定义规约对数据进行分层处理，所述两个端口分别为实时数据端口和离线文件端口，所述实时数据端口采用被动等待召唤机制发送报文，所述离线文件端口采用主动上传信息机制和被动等待召唤机制发送报文。本发明所述的电能质量通信方法，能够传送电能质量的各种类型的数据，找到一个合理的数据传送流程，从而解决现有规约无法传送电能质量这一类数据的问题，既能快速显示用户想看的信息，又能保证网络通畅不丢包传送数据，从而解决大量的电能质量数据如何传送的问题。
The invention discloses a power quality communication method applied to a microgrid, which uses a network port as a physical interface, performs data transmission based on the TCP/IP protocol, and sets two ports on a power quality device for communication with a background monitoring system The data is transmitted, and the protocol is defined to perform hierarchical processing on the data. The two ports are respectively a real-time data port and an offline file port. The real-time data port uses a passive waiting call mechanism to send messages, and the offline file port uses an active upload The information mechanism and the passive waiting call mechanism send messages. The power quality communication method described in the present invention can transmit various types of data of power quality, and find a reasonable data transmission process, so as to solve the problem that existing regulations cannot transmit such data as power quality, and can quickly display user The information you want to see can also ensure the smooth transmission of data without packet loss in the network, thus solving the problem of how to transmit a large amount of power quality data.
Description
Technical field
The present invention relates to a kind of quality of power supply method for communicating, in particular, relate to a kind of quality of power supply method for communicating that is applied to little electrical network.
Background technology
The electric power system of the world today all is to be the single concentration supply power system of principal character with big unit, big electrical network, high voltage; But, it is found that big electrical network can not satisfy this requirement fully along with the raising of society to the security reliability requirement of supply of electric power.Any one the disturbance that fault produced all can affect greatly whole electrical network in the big electrical network, possibly cause large-area power-cuts when serious, causes serious consequence.U.S. California in 2003 power outage that China south snow disaster causes at the beginning of accident and 2008 of having a power failure on a large scale makes people that attentiveness has been invested little electrical network.Little electrical network is as a controlled power supply, and it can be connected to low-voltage network and be incorporated into the power networks, again can independent operation, can strengthen the power supply reliability of electrical network.
In addition, little electrical network also can play positive role to reduction grid loss and energy-conserving and environment-protective, the reduction energy to the Nature destruction.Because along with the reduction of the increasing of the reducing of the increase of the continuous decline of electric pressure, feeder line total length, feeder line cross section, transformer platform number, load factor, the energy loss of power distribution network portion in the whole network energy total losses progressively increases and is inevitable.And little energy that little electrical network uses all is some emerging green energy resources, like wind power generation, solar power generation, battery energy storage etc., can reduce environmental pollution and greenhouse effect.
Along with little electrical network greatly developing in recent years, the power quality problem of little electrical network has been a problem that can not be ignored.Wherein, The operation characteristic of the uncertainty of wind resource and solar energy resources and fluctuation, each little source subsystem makes the power output of each subsystem fluctuation occur; And the use of various power electronic equipments; Thereby influence the quality of power supply of electrical network, for example voltage deviation, voltage fluctuation, harmonic wave and a harmonic wave etc.Like this, administer the research or the purpose of real time inspection and control no matter be in, we will obtain the more electric energy qualitative data as far as possible.Because the quality of power supply has much more more complicated data, not only data volume especially greatly but also also a great difference of data mode.The real time data of a circuit of quality of power supply device possibly have only amplitude, phase angle of three-phase voltage and electric current etc. unlike other devices; The data type of power quality data is as shown in Figure 1; Comprise real time data, statistics, tendency chart, event information and parameter setting; Wherein, said real time data comprises master data, harmonic data and monochromatic wave data; Said event information comprises list of thing and incident waveform; Said parameter setting comprises system's setting and definite value management.
And the existing power transmission protocol does not also have a kind of method of unified more rational electric energy transmitting qualitative data; Specific as follows: IEC60870-5-101, IEC60870-5-104 stipulations all are transformer station and dispatching communication; The former adopts serial mode, and the latter adopts network mode; The IEC60870-5-102 stipulations are metering stipulations, mainly transmit electricity information; The IEC60870-5-103 stipulations are relaying protection stipulations, communicate with a protection type device mostly.All do not have specifically defined about the quality of power supply in these stipulations, can't transmit a large amount of power quality datas yet.
Summary of the invention
Goal of the invention: in order to overcome the deficiency that exists in the prior art, the present invention provides a kind of the quality of power supply is carried out specifically defined, as can the to transmit a large amount of power quality datas quality of power supply communication means that is applied to little electrical network.
Technical scheme: for realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of quality of power supply communication means that is applied to little electrical network; Use network interface as physical interface; Carry out transfer of data based on ICP/IP protocol; Be provided with at least on the quality of power supply device that two ports are used for and background monitoring system between transmit data, and the definition stipulations carry out layering to data and handle, said two ports are respectively real time data port and off-line files port; Said real time data port adopts passive wait calling mechanism to send message, and said off-line files port adopts active upload information mechanism and passive wait calling mechanism to send message.
To being further defined to of present technique scheme, adopt the mode of client/server to be connected between said background monitoring system and the said quality of power supply device, corresponding at least one quality of power supply device of background monitoring system.
Further, said data are carried out in the stipulations that layering handles data being divided into four layers, wherein, ground floor is the device numbering, and the second layer is circuit number, and the 3rd layer is data type, and the 4th layer is data address.
Further, said data are carried out in the stipulations that layering handles, the heading of regulation message comprises 14 bytes; The centre is a data block; Message tail is the termination character of 1 byte, and wherein, 14 bytes of heading are defined as: first byte definition starts character; The length of data block is numbered in second and the 3rd byte definition from device; The nybble definition starts character; The 5th byte definition device numbering; The 6th byte definition circuit number; The 7th byte definition phase sequence numbering; Eight characters joint definition round numbering; The 9th byte definition of data type; The definition of cross joint transmits reason; The the 11 and the 12 byte definition of data point number; The the 13 and the tenth nybble definition of data address.
Further, said passive wait calling mechanism comprises the steps:
(1) quality of power supply device monitored data port waits to be connected;
(2) background monitoring system is initiated the TCP connection, and quality of power supply device is accepted connection, waits for the calling order;
(3) background monitoring system is through the method calling data of Event triggered or regularly calling;
(4) quality of power supply device is accepted calling, sends the data of response;
(5) background monitoring system receives data, accomplishes a data transfer.
Further, in the said passive wait calling mechanism, after transfer of data is accomplished, idle period, quality of power supply device timed sending test packet, client is replied acknowledgement frame, keeps connecting.
Further, the data of calling comprise real time data, tendency chart data or value data in the step (3).
Further, said active upload mechanism comprises the steps:
(1) quality of power supply device monitored data port waits to be connected;
(2) background monitoring system is initiated the TCP connection, and quality of power supply device is accepted connection, active upload information or wait calling order;
(3) quality of power supply device initiatively sends current event information data;
(4) background monitoring system receives event information data, calls the wave file of this incident as required;
(5) quality of power supply device sends the wave file of response;
(6) background monitoring system is called statistics during this period of time as required;
(7) quality of power supply device sends the statistics of response, accomplishes a data transfer.
Further, in the said active upload mechanism, after transfer of data was accomplished, quality of power supply device initiatively sent corresponding message and gives background monitoring system when having record ripple incident or other important informations to take place, and background monitoring is handled in real time.
Further, when transmitting data, take each to transmit, the method for Subdividing Processing is caught the current line number of checking of user, sends the data of response.
Beneficial effect: a kind of quality of power supply communication means that is applied to little electrical network of the present invention; Can transmit various types of data of the quality of power supply; Find a rational data transport stream journey, thereby solve the problem that existing stipulations can't transmit this type of quality of power supply data; Adopt method of the present invention, can take into account real-time and reliability simultaneously, explicit user is wanted the information seen fast, can guarantee that again the unobstructed not packet loss of network transmits data, thereby solve the problem how a large amount of power quality datas transmits.
Description of drawings
Accompanying drawing 1 is the data type sketch map of power quality data in the prior art;
Accompanying drawing 2 is the definition sketch map of stipulations in the inventive method;
Accompanying drawing 3 is the message transmission flow sketch map of passive wait calling mechanism in the inventive method;
Accompanying drawing 4 is the message transmission flow sketch map of active upload information mechanism in the inventive method.
Embodiment
Below in conjunction with accompanying drawing the present invention is done explanation further.
A kind of quality of power supply communication means that is applied to little electrical network; Use network interface as physical interface; Carry out transfer of data based on ICP/IP protocol; Be provided with at least on the quality of power supply device that two ports are used for and background monitoring system between transmit data, and the definition stipulations carry out layering to data and handle, said two ports are respectively real time data port and off-line files port; Said real time data port adopts passive wait calling mechanism to send message, and said off-line files port adopts active upload information mechanism and passive wait calling mechanism to send message.
In the present embodiment, use network interface as physical interface, adopt the mode of client/server to connect, quality of power supply device is as server, and background monitoring system is as the customer side, and carries out transfer of data based on ICP/IP protocol.The port that transmits data is divided into two, is respectively real time data port and off-line files port, and said real time data port adopts passive wait calling mechanism to send message, transmits real time data, for example, and line voltage distribution, electric current, power, harmonic wave, a harmonic wave etc.; Said off-line files port sends message with active upload information mechanism and passive wait calling mechanism, transmits important informations such as record ripple incident, and according to the off-line data of these event-consumers callings, for example, historical trend, statistics etc.
The definition stipulations are carried out layering to data and are handled, during layering is handled, and fix data points successively.Ground floor is the device numbering, is used for discriminating device; The second layer is circuit number, is used to distinguish the circuit of certain table apparatus; The 3rd layer is data type, is used to obtain what data that this message transmits; The 4th layer is the data address under this data type, and which data is used for distinguishing is, the specified data period.
Above-mentioned that data are carried out the stipulations definition sketch map that layering handles is as shown in Figure 2: heading comprises 14 bytes, and the centre is a data block, and message tail is the termination character of 1 byte.Wherein, 14 of heading bytes are defined as: first byte definition starts character; The definition of second and the 3rd byte is numbered the length of data block from device, said length be low byte preceding, number the byte number of data block, the total length=length of message+4 from device; The nybble definition starts character; The 5th byte definition device numbering is used for positioner, and preceding 4 are the power transformation station number, and back 4 are this transforming plant apparatus numbering; The 6th byte defines circuit number, is used to locate the circuit of certain table apparatus, is 0xFF during the conveyer category information; The 7th byte definition phase sequence numbering is used when transmitting a certain phase order sequenced data, and such as A phase harmonic wave etc., the time spent is not 0xFF; Eight characters joint definition round numbering can be divided a plurality of messages more for a long time when the data of a certain type that transmits and transmitted, and the time spent is not 0xFF; The 9th byte definition of data type is used for definition and transmits type of data; The definition of cross joint transmits reason, is used to define the reason of transmission; The the 11 and the 12 byte definition of data point number is used for the data number of unlabeled data piece, and low byte is preceding; The the 13 and the tenth nybble definition of data address, low byte is preceding.
In above-mentioned two kinds of message transmit mechanisms; Said real time data port adopts passive wait calling mechanism to send message; At any time wait for that background monitoring system sends the calling order and obtains the information of response, such as, device numbering, circuit number, data type etc.; Then, quality of power supply device form is according to the rules replied the data that background monitoring system is wanted.The real time data port adopts passive wait calling mechanism to send message, is used to send real time data, and responsiveness is high, data volume is relatively little, and passive wait calling mechanism specifically comprises the steps:
(1) quality of power supply device monitored data port waits to be connected;
(2) background monitoring system is initiated the TCP connection, and quality of power supply device is accepted connection, waits for the calling order;
(3) background monitoring system is through the method calling data of Event triggered or regularly calling, and data comprise real time data, tendency chart data or value data;
(4) quality of power supply device is accepted calling, sends the data of response;
(5) background monitoring system receives data, accomplishes a data transfer.
(6) after transfer of data is accomplished, background monitoring system regularly issue to the time message, quality of power supply device accept to the time, and reply acknowledgement frame.
(7) in the said passive wait calling mechanism, after transfer of data is accomplished, idle period, quality of power supply device or background monitoring system timed sending test packet, background monitoring system or quality of power supply device are replied acknowledgement frame, keep connecting.
Said off-line files port sends file and the statisticss such as incident record ripple that the user is not often calling; And quality of power supply device can initiatively send event information and give background monitoring system; Can be in real time, initiatively be uploaded to background monitoring system to warning information and event information isopreference, the active upload information mechanism comprises the steps:
(1) quality of power supply device monitored data port waits to be connected;
(2) background monitoring system is initiated the TCP connection, and quality of power supply device is accepted connection, waits for the calling order;
(3) quality of power supply device initiatively sends current event information data;
(4) background monitoring system receives event information data, and calls the wave file of this incident;
(5) quality of power supply device sends the wave file of response;
(6) statistics of this incident of background monitoring system calling;
(7) quality of power supply device sends the statistics of response, accomplishes a data transfer.
In addition, when transmitting data, take each to transmit, the method for Subdividing Processing,
Simultaneously, for the big problem of power quality data amount, take each to transmit, the method for Subdividing Processing is caught the current line number of checking of user, sends the data of response.Because can not show voltage, electric current of several circuits etc. on the user interface simultaneously, so just can catch the current line number of checking of user, send corresponding data then and get final product.Handle the load just can alleviate program and network like this, efficiently, show fast and accurately, and customer-side feels that also all want that the data of checking all are real-time demonstrations.
The data that quality of power supply device initiatively sends in the active upload information mechanism that the present invention adopts have:
(1) quality of power supply device active upload mechanism in the off-line files port: event information on the quality of power supply device, once active upload takes place;
(2) quality of power supply device active upload mechanism in the real time data port: real-time 3 seconds data; Comprise master data, harmonic data, a harmonic data, rule of thumb these data are that the user often need see, if adopt a calling of the more than certainly transmission of passive calling mechanism message; So can specify background monitoring system to send 3 seconds data class of a calling orders to behind the device; Device was initiatively responded the data that calling message just now needs to background monitoring system with regard to continuous 5 minutes, only if run into other calling order, if run into other calling orders; Explain that the user has left interface just now, then be concerned about other data.
A kind of quality of power supply communication means that is applied to little electrical network of the present invention can transmit various types of data of the quality of power supply, finds a rational data transport stream journey, thereby solves the problem that existing stipulations can't transmit this type of quality of power supply data; Adopt method of the present invention, can take into account real-time and reliability simultaneously, explicit user is wanted the information seen fast, can guarantee that again the unobstructed not packet loss of network transmits data, thereby solve the problem how a large amount of power quality datas transmits.
The above only is a preferred implementation of the present invention; Be noted that for those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
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| CN102916964A (en) * | 2012-10-29 | 2013-02-06 | 云南电力调度控制中心 | Compatible method for protecting 103 communication protocol of information substation |
| CN111240922A (en) * | 2020-02-24 | 2020-06-05 | 山东华芯半导体有限公司 | Non-invasive system state tracking device |
| CN113991675A (en) * | 2021-12-24 | 2022-01-28 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Micro-grid harmonic compensation method based on distributed event trigger control |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102916964A (en) * | 2012-10-29 | 2013-02-06 | 云南电力调度控制中心 | Compatible method for protecting 103 communication protocol of information substation |
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| CN111240922A (en) * | 2020-02-24 | 2020-06-05 | 山东华芯半导体有限公司 | Non-invasive system state tracking device |
| CN113991675A (en) * | 2021-12-24 | 2022-01-28 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Micro-grid harmonic compensation method based on distributed event trigger control |
| CN113991675B (en) * | 2021-12-24 | 2022-05-03 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Micro-grid harmonic compensation method based on distributed event trigger control |
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Inventor after: Sun Guocheng Inventor after: Chou Jiaxin Inventor after: Wu Yuwei Inventor after: Liu Xiaohui Inventor after: Wu Dajun Inventor after: Zhao Jingtao Inventor after: Zhao Peng Inventor after: Wang Hui Inventor after: Ge Chengyu Inventor after: Chen Chen Inventor after: Hou Mingguo Inventor after: Teng Yun Inventor after: Jin Xue Inventor before: Sun Guocheng Inventor before: Wu Yuwei Inventor before: Zhao Jingtao Inventor before: Wang Hui Inventor before: Ge Chengyu Inventor before: Chen Chen Inventor before: Hou Mingguo Inventor before: Teng Yun Inventor before: Jin Xue Inventor before: Chou Jiaxin |
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Free format text: CORRECT: INVENTOR; FROM: SUN GUOCHENG ZHAO JINGTAO WANG HUI GE CHENGYU CHEN CHEN HOU MINGGUO TENG YUN JIN XUE CHOU JIAXIN WU YUWEI TO: SUN GUOCHENG ZHAO JINGTAO ZHAO PENG WANG HUI GE CHENGYU CHEN CHEN HOU MINGGUO TENG YUN JIN XUE CHOU JIAXIN WU YUWEI LIU XIAOHUI WU DAJUN |
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Effective date of registration: 20130418 Address after: 210061 D10, Nanjing high tech Industrial Development Zone, Jiangsu, China Applicant after: NARI Technology Development Co., Ltd. Applicant after: Jibei Electric Power Company Limited. Address before: High road high tech Development Zone Nanjing city Jiangsu province 210061 No. 20 Applicant before: NARI Technology Development Co., Ltd. |
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Application publication date: 20121003 |