CN102545888B - Synchronization device and method of direct-current transmission control protection system based on TDM (time division modulation) - Google Patents
Synchronization device and method of direct-current transmission control protection system based on TDM (time division modulation) Download PDFInfo
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- CN102545888B CN102545888B CN201110423498.9A CN201110423498A CN102545888B CN 102545888 B CN102545888 B CN 102545888B CN 201110423498 A CN201110423498 A CN 201110423498A CN 102545888 B CN102545888 B CN 102545888B
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Abstract
The invention relates to a synchronization device and a method of a direct-current transmission control protection system based on TDM (time division modulation). The device and the method realize the synchronization of the system through adopting high speed performance and real-time performance of a TDM bus. The realization device comprises a measuring system and a control system, wherein TDM bus interfaces are integrated on each acquisition board card in the measuring system; each of the acquisition board card is connected mutually through TDM; the control system comprises a TDM bus board card and a control unit; and the measuring system is connected with the control system through the TDM bus. The acquisition system is also provided with a frequency following module so as to ensure that the sampling numbers of the acquisition system in each work frequency period keep the same. The realization method is that the ideal synchronous sampling of each acquisition board card in the measuring system can be guaranteed through a synchronous head of a TDM frame and a certain delay. With the adoption of the device and the method, the data synchronization between the measuring system and the control system in the direct-current transmission control protection system can be realized.
Description
Technical field
The synchronizer and the method that the present invention relates to a kind of direct-current power transmission control protection system based on TDM, belong to electronic technology field.
Background technology
Along with the development of HVDC Transmission Technology, the overall architecture of the control protection system of direct current transportation is also being carried out constantly renewal and is being improved.In original control protection system, will measure and control integration to cabinet in, exchanges data so each other will complete between the parallel bus of cabinet inside, the synchronous and phase-locked control between system can be easy to realization.But along with the expansion of direct current transportation transmitting energy, such control protection system obviously can not meet the demands, new system architecture is applied and is given birth to, and is illustrated in figure 1 the overall architecture of the current control protection system that we adopt.New framework has solved the whole control ability of large-sized DC transmission of electricity, but new problem has also produced, Task-decomposing to two system (measuring system and control system) that this framework can complete an original system has been shared out the work and help one another, and between system, synchronously will become a difficult problem.
Summary of the invention
The object of the invention is: overcome the deficiencies in the prior art, the synchronous implementation method of a kind of direct-current power transmission control protection system and device are provided, realize synchronous between large-sized DC transmission system.
For achieving the above object, the invention provides a kind of synchronizer of the direct-current power transmission control protection system based on TDM, this synchronizer is in order to realize synchronous between measuring system and control system, it between control system, is redundancy communication, each measuring system comprises at least two analog input cards, each control system comprises at least 1 control unit, it is characterized in that being integrated with TDM bus interface on each described analog input card, between analog input card, by TDM, connect, described control system also comprises a TDM bus board that is integrated with pci bus interface, in control system, have at least a block control unit to be connected with pci bus interface and with the pci bus on TDM bus board, between measuring system and control system, by TDM bus, be connected.
Described synchronizer also comprises a frequency tracker module, and described frequency tracker module is identical counting of each power frequency period sampling in order to realize measuring system.
Described frequency-tracking module comprises 4 functional modules, the ALF of the first functional module computing system and BET component, the second Implement of Function Module is to the harmonic of ALF and BET component and positive sequence filtering, the 3rd functional module is obtained filtered phase place pha and amplitude mag, and the 4th functional module is adjusted the sampling period of measuring system A/D sampling module according to phase place pha and amplitude mag.
It is the mode that adopts daisy chain that TDM between the analog input card of described measuring system connects, and the timeslot number of analog input card arranges by the toggle switch on analog input card.
Described TDM send frame by: between sync synchronizing signal+mono-time slot or a plurality of time slot frame data+two time slot frame data, " pause " signal forms.
The present invention also provides a kind of synchronous method of the direct-current power transmission control protection system based on TDM, and this synchronous method specifically comprises the steps:
1). each analog input card in measuring system is carried out to time slot allocation, determine the analog input card of main mode of operation;
2). the analog input card in main mode of operation in measuring system is carried out to frequency-tracking, and counting that assurance analog input card is sampled in a power frequency period is constant;
3). by TDM, realize the sample-synchronous between each analog input card in acquisition system;
4). control system is received the TDM signal from measuring system by the TDM bus board clamping on it, and the control unit of delivering to control system is processed.
Described step 1) is to have arranged by the toggle switch on analog input card.
Described step 2) by following steps, complete:
3 phase voltages to hardware circuit in system are carried out low-pass filtering;
The voltage collecting according to analog input card, calculates ALF and the BET component of this system;
Resulting ALF and BET component are carried out to harmonic and positive sequence filtering;
According to filtered result, calculate their phase place and amplitude;
According to the phase place of circuit and amplitude, dynamically adjust the sampling period of this analog input card.
Described step 3) the step specifically comprising is as follows:
Setting the frame format that TDM sends frame is: the pause signal between adjacent time-slots frame data of sync synchronizing signal+n time slot frame data+between two, and wherein n represents the number of analog input card in acquisition system;
0,1 timeslot number through time slot allocation analog input card is arranged as from small to large: ..., n-1, be assigned as the analog input card of 0 time slot as synchronous promoter, each time slot needs time delay after receiving synchronizing information, corresponding delay time is the timeslot number sysclk that n deducts each time slot, to guarantee each time slot sample-synchronous;
Timeslot number is that the mode of operation of 0 analog input card is holotype, and the own local data send to next TDM node by daisy chain passage of only packing, does not receive any data; The mode of operation of the capture card of other described time slot is from pattern, receives the data that a TDM node is sent, and local data is inserted into simultaneously and in Frame, sends to next TDM node.
Described step 4) specifically comprises the following steps:
The tdm data frame that measuring system is sent by TDM bus is sent on the TDM bus board in control system and receives, and the TDM bus board of control system sends to the tdm data frame of reception on the CPU board card with pci bus interface again;
CPU board card unpacks the tdm data frame of receiving, the data after unpacking are as the foundation of the various control function logic of local direct current transportation computing, and sending other to has the CPU board card needing.
Beneficial effect of the present invention: the present invention samples to guarantee the ideal synchronisation of each analog input card in measuring system by TDM frame synchronization head and certain time delay, and realizes the synchronous of measuring system and control system by TDM bus.The present invention is simple in structure, utilizes the high speed of TDM bus and real-time to realize synchronous between system.
Accompanying drawing explanation
Fig. 1 is that protection hardware system structure figure is controlled in direct current transportation;
Fig. 2 is the hardware system structure figure of the embodiment of the present invention;
Fig. 3 is embodiment of the present invention medium frequency tracking module structure chart;
Fig. 4 is the TDM frame assumption diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
A kind of embodiment of synchronizer of the direct-current power transmission control protection system based on TDM
As shown in Figure 1; this direct-current power transmission control protection system comprises measuring system and control system; in the VME64X cabinet of measuring system, be inserted with 10 dsp board cards; each piece dsp board card is all integrated with TDM bus interface; in the VME64X cabinet of control system, be inserted with 6 CPU board cards and 1 TDM bus board; in 6 CPU board cards, on CPU1 board and CPU2 board, there is pci bus interface, on TDM bus board, be integrated with the pci bus interface of standard.
Between dsp board card, by TDM, connect, the connection of TDM adopts daisy chaining as shown in Figure 2.In the VME64X cabinet of measuring system, the timeslot number of TDM node is stuck in cabinet order number consecutively from left to right according to 10 dsp boards, be respectively: 0,1,2 ... 8,9, every dsp board card is according to assigned TDM node timeslot number, by the toggle switch on dsp board card, arrange, to determine its position in network.Timeslot number is that 0 dsp board card is that the TDM mode of operation of DSP1 board is holotype, and the own local data send to next TDM node by daisy chain passage of only packing, does not receive any data; The TDM of the dsp board card of other time slot works in from pattern, receives the data that a TDM node is sent, and local data is inserted into simultaneously and in Frame, sends to next TDM node.Dsp board card in first TDM node in test macro is with the module of frequency-tracking function on DSP1 board, as shown in Figure 3, this module comprises 4 functional modules, the ALF of the first functional module computing system and BET component, the second Implement of Function Module is to the harmonic of ALF and BET component and positive sequence filtering, the 3rd functional module is obtained filtered phase place pha and amplitude mag, and the 4th functional module is adjusted the sampling period of measuring system A/D sampling module according to phase place pha and amplitude mag.This module can make DSP1 board along with the frequency of alternating current circuit is adjusted its sampling period, to guarantee in each power frequency period 128 points (adjusting according to different engineering demands) data of sampling.
10DSP board in measuring system by synchronized sampling to data with the form of tdm data frame, send the TDM bus board arranging in control system to, TDM bus board sends in measuring system by its pci interface the Frame receiving to CPU with pci interface, CPU unpacks the tdm data frame receiving, and the data after unpacking the foundation as the computing of the various control function logic of local direct current transportation, send to needs but not with the CPU board card of pci bus interface simultaneously.
The embodiment of the synchronous method of a kind of direct-current power transmission control protection system based on TDM of the present invention
The synchronous method concrete steps of being somebody's turn to do the direct-current power transmission control protection system based on TDM are as follows:
1. first each dsp board card in measuring system is carried out to time slot setting, the timeslot number of TDM node in the VME64X cabinet of measuring system is stuck in cabinet to order number consecutively from left to right according to 10 dsp boards, be respectively: 0, 1, 2 ... 8, 9, every dsp board card is according to assigned TDM node timeslot number, by the toggle switch on dsp board card, arrange, to determine its position in network, timeslot number is that the TDM mode of operation of 0 dsp board card is holotype, only pack own local data send to next TDM node by daisy chain passage, do not receive any data, the TDM of other time slot works in from pattern, receive the data that a TDM node is sent, local data is inserted into simultaneously and in Frame, sends to next TDM node.
2. in pair measuring system, being positioned at 0 time slot position sticks into line frequency as the dsp board of main mode of operation and follows the tracks of, here just refer to and be positioned at the leftmost dsp board card of measuring system VME64X cabinet, by this dsp board card being carried out to software setting, guarantee that this dsp board is stuck in each power frequency period 128 points of sampling, its implementation procedure is as follows: 3 phase voltage calculation that first collect according to this dsp board card go out ALF and the BET component of system, then resulting component is carried out to harmonic and positive sequence filtering, according to filtered result, calculate their phase place and amplitude, according to the phase place of circuit and amplitude, dynamically adjust the sampling period of this dsp board card, make it 128 points of sampling within each cycle.
3. utilize TDM to realize the sample-synchronous between 10 dsp board cards in measuring system.In measuring system, between dsp board card, by TDM, connect, the connection of TDM adopts the connected mode of daisy chain, according to each dsp board card timeslot number order from small to large, connects successively; The frame format of setting TDM transmission frame is: " pause " signal between the adjacent time-slots frame data of time slot frame data+9, sync synchronizing signal+10; Be assigned as the dsp board card of 0 time slot as synchronous promoter, each time slot is received and after the time delay regular hour, is started local AD sampling after synchronizing information, the delay time of each dsp board card is relevant with its timeslot number, its delay time is 10 to deduct its corresponding time slot number, the dsp board card that is for example 3 for time slot, when it is received after synchronizing information, its delay time is 7 sysclk, in this way, just can make the dsp board card of different time-gap reach the object of simultaneously carrying out AD sampling.After these 10 dsp board card samplings finish, according to set TDM frame structure, by TDM bus, send in control system.
4. the tdm data frame that measuring system sends by TDM bus is received in the TDM bus board clamping in control system, by the pci bus interface on TDM bus board, tdm data frame is sent in the CPU board card with pci bus interface, CPU board card unpacks the tdm data frame of receiving, data after unpacking are as the foundation of the various control function logic of local direct current transportation computing, and send to needs but not with the CPU board card of pci bus interface simultaneously.
The present invention samples to guarantee the ideal synchronisation of each analog input card in measuring system by TDM frame synchronization head and certain time delay, and realizes the synchronous of measuring system and control system by TDM bus.The present invention is simple in structure, utilizes the high speed of TDM bus and real-time to realize synchronous between system.
Claims (10)
1. the synchronizer of the direct-current power transmission control protection system based on TDM, this synchronizer is in order to realize synchronous between measuring system and control system, redundancy communication between control system wherein, each measuring system comprises at least two analog input cards, each control system comprises at least 1 control unit, it is characterized in that being integrated with TDM bus interface on each described analog input card, between analog input card, by TDM, connect, described control system also comprises a TDM bus board that is integrated with pci bus interface, in control system, have at least a block control unit to be connected with pci bus interface and with the pci bus on TDM bus board, between measuring system and control system, by TDM bus, be connected.
2. the synchronizer of the direct-current power transmission control protection system based on TDM according to claim 1; it is characterized in that: described synchronizer also comprises a frequency tracker module, described frequency tracker module is identical counting of each power frequency period sampling in order to realize measuring system.
3. the synchronizer of the direct-current power transmission control protection system based on TDM according to claim 2; it is characterized in that: described frequency-tracking module comprises 4 functional modules; the ALF of the first functional module computation and measurement system and BET component; the second Implement of Function Module is to the harmonic of ALF and BET component and positive sequence filtering; the 3rd functional module is obtained filtered phase place pha and amplitude mag, and the 4th functional module is adjusted the sampling period of measuring system A/D sampling module according to phase place pha and amplitude mag.
4. according to the synchronizer of the direct-current power transmission control protection system based on TDM described in claim 1,2 or 3; it is characterized in that: it is the mode that adopts daisy chain that the TDM between the analog input card of described measuring system connects, and the timeslot number of analog input card arranges by the toggle switch on analog input card.
5. according to the device described in claim 1,2 or 3, it is characterized in that: described TDM send frame by: between sync synchronizing signal+mono-time slot or a plurality of time slot frame data+two time slot frame data, " pause " signal forms.
6. a synchronous method for the direct-current power transmission control protection system based on TDM, is characterized in that: the concrete steps of the method are as follows:
1). each analog input card in measuring system is carried out to time slot allocation, determine the analog input card of main mode of operation;
2). the analog input card in main mode of operation in measuring system is carried out to frequency-tracking, and counting that assurance analog input card is sampled in a power frequency period is constant;
3). by TDM, realize the sample-synchronous between each analog input card in acquisition system, this process is as follows: setting the frame format that TDM sends frame is: the pause signal between adjacent time-slots frame data of sync synchronizing signal+n time slot frame data+between two, wherein n represents the number of analog input card in acquisition system
0,1 timeslot number through time slot allocation analog input card is arranged as from small to large: ..., n-1, be assigned as the analog input card of 0 time slot as synchronous promoter, each time slot needs time delay after receiving synchronizing information, corresponding delay time is the timeslot number sysclk that n deducts each time slot, to guarantee each time slot sample-synchronous;
4). control system is received the TDM signal from measuring system by the TDM bus board clamping on it, and the control unit of delivering to control system is processed.
7. the synchronous method of the direct-current power transmission control protection system based on TDM according to claim 6, is characterized in that: described step 1) is to have arranged by the toggle switch on analog input card.
8. the synchronous method of the direct-current power transmission control protection system based on TDM according to claim 6, is characterized in that: described step 2) by following steps, complete:
3 phase voltages to hardware circuit in measuring system are carried out low-pass filtering;
The voltage collecting according to analog input card, calculates ALF and the BET component of this measuring system;
Resulting ALF and BET component are carried out to harmonic and positive sequence filtering;
According to filtered result, calculate their phase place and amplitude;
According to the phase place of circuit and amplitude, dynamically adjust the sampling period of this analog input card.
9. the synchronous method of the direct-current power transmission control protection system based on TDM according to claim 7, it is characterized in that: the mode of operation of the analog input card that described step 3), timeslot number is 0 is holotype, only pack own local data send to next TDM node by daisy chain passage, does not receive any data; The mode of operation of the analog input card of other time slot is from pattern, receives the data that a TDM node is sent, and local data is inserted into simultaneously and in Frame, sends to next TDM node.
10. according to the synchronous method of the direct-current power transmission control protection system based on TDM described in claim 6,7,8 or 9, it is characterized in that: described step 4) specifically comprises the following steps:
The tdm data frame that measuring system is sent by TDM bus is sent on the TDM bus board in control system and receives, and the TDM bus board of control system sends to the tdm data frame of reception on the CPU board card with pci bus interface again;
CPU board card unpacks the tdm data frame of receiving, the data after unpacking are as the foundation of the various control function logic of local direct current transportation computing, and sending other to has the CPU board card needing.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1551556A (en) * | 2003-03-07 | 2004-12-01 | 卓联半导体有限公司 | Clock synchronisation over a packet network |
| CN101330374A (en) * | 2007-06-18 | 2008-12-24 | 大唐移动通信设备有限公司 | Method and system for synchronizing clock of transmission network as well as subordinate clock side entity |
| CN101895793A (en) * | 2009-05-22 | 2010-11-24 | 华为技术有限公司 | Packet-switching network and TDM (Time Division Multiplexer) network interworking service protection method as well as network equipment |
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| US20060250939A1 (en) * | 2005-03-28 | 2006-11-09 | Wang Michael M | Optimal timing and frequency acquisition for OFDM systems |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1551556A (en) * | 2003-03-07 | 2004-12-01 | 卓联半导体有限公司 | Clock synchronisation over a packet network |
| CN101330374A (en) * | 2007-06-18 | 2008-12-24 | 大唐移动通信设备有限公司 | Method and system for synchronizing clock of transmission network as well as subordinate clock side entity |
| CN101895793A (en) * | 2009-05-22 | 2010-11-24 | 华为技术有限公司 | Packet-switching network and TDM (Time Division Multiplexer) network interworking service protection method as well as network equipment |
Non-Patent Citations (2)
| Title |
|---|
| TDM总线在高压直流输电中的应用;蒋大海等;《电力系统保护与控制》;20101201;第38卷(第23期);第238-240页 * |
| 蒋大海等.TDM总线在高压直流输电中的应用.《电力系统保护与控制》.2010,第38卷(第23期),第238-240页. |
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