CN105337269A - Information interaction method between devices orienting to communication-based regional protection - Google Patents
Information interaction method between devices orienting to communication-based regional protection Download PDFInfo
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- CN105337269A CN105337269A CN201510839615.8A CN201510839615A CN105337269A CN 105337269 A CN105337269 A CN 105337269A CN 201510839615 A CN201510839615 A CN 201510839615A CN 105337269 A CN105337269 A CN 105337269A
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Abstract
The invention belongs to the field of information interchange of relay protection devices of a power system, in particular relates to an information interaction method between devices orienting to communication-based regional protection. Required information orienting to communication-based protection function is subjected to modeling and data processing, relay protection sampling value information in larger data transmission volume generates processed stateflow information, so as to reduce information interaction volume between the devices and meet the requirements of communication protection function on network performance; a regional sampling value information acquisition function and an in-region stateflow information interaction function between protection devices in a regional power network are formed by an information communication architecture of an establishment device and a communication architecture of a regional protection system. According to the invention, the contradiction between the information interaction of the relay protection devices and the network transmission performance can be effectively resolved, and a necessary communication function basis is provided for the implementation of a communication-based relay protection system.
Description
Technical field
The invention belongs to power system relay protection device information exchange field, particularly a kind of device method for information interaction between towards the locality protection based on communication.
Background technology
Existing relaying protection system carries out the configuration of protective device; protection philosophy only make use of electric parameters and the relative breaker state of discrete component; exist to the reliability of some specific fault and sensitivity not high; cause false protection or tripping, or operate time of protection and performance cannot meet completely to problems such as the requirements of excision fault.On the other hand; due to the expansion of electric power system scale; in bulk power grid in succession and relevance failure problems highlight gradually, and due to device information interaction single in existing protect system strong, cannot realize controlling the coordinated of region and even wide scope internal fault.
The formation that is established as of intelligent substation communication system realizes providing possibility by the defencive function that device information interaction solves the problem.But in the interactive mode of existing protection information; between device, transmission of information is the sampled value that data traffic is larger; the filtering etc. of fault waveform is processed and completes after device obtains data; transmittability is subject to existing network capabilities limits, and the locality protection etc. that cannot realize fault multiple discrimination that many devices work in coordination with and large scale electric network needs the function of bulk information remote interaction.
Summary of the invention
Goal of the invention:
For solving information interaction and the matching problem of above-mentioned protective device; the present invention proposes a kind of device method for information interaction between towards the locality protection based on communication; the power system relay protection device communication means with Distributed-tier level characteristics, by realizing effectively mutual between device of relay protection information to the improvement of transmission of information type and transfer mode.
Technical scheme:
The present invention is achieved through the following technical solutions:
A kind of device method for information interaction between towards the locality protection based on communication, it is characterized in that: the method is utilizing in electric power system in station and on the basis of interior communication network, requirement is realized, the communication construction between extended protection device according to distributed protection function; In single protective device communication construction, adopt Layered Information Interactive framework, build longitudinal data acquisition and generate pattern, build horizontal distribution of information interactive mode, build the traffic flow information based on corresponding defencive function and data genaration mode; In locality protection system communication construction; there is at each information interaction Joint Enterprise the protective device of single device communication construction; according to the division of corresponding protection zone in network topology structure and defencive function, communication link is built to protective device, carry out the information interaction between device in region.
In information interacting method; between device, the electric system state quantity information of communication interaction is not directly transmit original sample value message except carrying out sample values process, be meet COMMUNICATION NETWORK PERFORMANCES require with the demand based on the defencive function communicated carry out data processing after the state flow information that generates.
State stream generating method is towards the defencive function information needed modeling based on communication, and the state flow type of definition interactive information, is formed and be easy to data mode mutual in a large number; Electric sampled value analog quantity in electric power system, switching value, state information are converted to corresponding state stream type, the state flow information after process is transmitted.
State flow type include but not limited to electric parameters amplitude, electric parameters phase place, electric parameters direction, region interpolation stream amplitude, region interpolation stream with or without.
Information interacting method comprises the communication construction of single assembly and the communication construction of locality protection system, by device between inner and device communication construction cooperation implement device between information mutual.）
Single device communication construction possesses stratification feature, is two levels according to defencive function desired data Type division; Sample information layer is directly obtain respective electric amount sampled value to realize the conventional principles main protection of corresponding defencive function, backup protection and near field protection; State fluid layer be generated after data processing by this device and and other devices between carry out the defencive function based on information communication between device of the state flow information realization obtained alternately.
Single device communication construction longitudinally carries out data acquisition and process between level, laterally carries out data interaction between each device of corresponding level; First device obtains other protection Back ground Informations such as sampling value message and on-off state, is distributed to corresponding defencive function and respective associated external device (ED), and obtains external sampling value needed for state flow data genaration in sample information layer after carrying out data prediction; Carry out state flow data genaration at state fluid layer, the state flow information of formation, and carry out information interaction with respective associated external device (ED), the information after interaction process is supplied to the defencive function module based on communication.
In locality protection system communication construction, in conjunction with power system network Topology connection and the corresponding interaction area of device information interaction model split, sample information protection zone is divided into by there is the mutual protection zone of sampled value with device, different according to association level, and different to device information node Connection Element progression, the protection zone mutual with device existence stream information is divided into state flow protection zone at different levels; To sample information protection zone, between device, communication network configuration and performance distribute the requirement meeting transformer station's sampling value message and transmit, and device can obtain the sampled value information in district, are supplied to the defencive function and state flow information generation use that need corresponding information; To state flow protection zone at different levels, the state flow information transmission that communication link performance meets the demands lower, it is mutual to carry out state flow in region between device.
Advantage and effect:
Device method for information interaction between towards the locality protection based on communication of the present invention, tool has the following advantages:
Method proposed by the invention is improved according in the communication system of the relay protection function demand based on communication between existing protective device, extend the information interaction function within the scope of Local Area Network between device, the a large amount of long-range transmission that state flow information modeling and generation method are applicable to protection information is proposed, stratification device communication construction is beneficial on the basis keeping original device data acquisition and processing capacity, carry out data type expansion and information generation, locality protection system network communication construction achieves the classification acquisition and interactive mode that information between device associates with protection zone, single device and the mode that area communication system is combined are beneficial to the respective upgrades when equipment or the network hardware are unilaterally transformed to function.By proposed method, achieving the remote interaction of protection information in Grid protect system and transmission, efficiently solve the problem of sampled value transmission network scarce capacity, providing necessary communication function basis for realizing based on the relaying protection system of communication.
Accompanying drawing explanation
Fig. 1 is single protective device communication construction schematic diagram.
Fig. 2 is locality protection system communication construction schematic diagram.
Description of reference numerals:
In figure: single protective device communication construction model 1, sample information layer 2, state fluid layer 3; sampled value and other protecting group plinth information 4, data preprocessing module 5, sample information layer defencive function module 6; sample information layer interactive function module 7, state flow information generates and processing module 8, state flow information 9; state fluid layer defencive function module 10; state fluid layer interactive function module 11, information interaction node 12, information link 13; sample information protection zone 14, state flow protection zone 15.
Embodiment
For meeting the needs of state information acquisition in Distributed-tier level protection fault multiple discrimination and locality protection function, the present invention to propose in a kind of protection zone information communication system between device.By building corresponding device information interactive mode, information type and data genaration mode, area information interactive mode; utilize the communication construction between the communication network system expanding protective device in electric power system in existing station and between station, the compartmentalization defencive function for Distributed-tier level realizes providing required information interacting method.
The invention provides a kind of device method for information interaction between towards the locality protection based on communication, described information interacting method is utilizing in electric power system in station and on the basis of interior communication network, requirement is realized, the communication construction between extended protection device according to distributed protection function, in single protective device communication construction model 1, adopt the Layered Information Interactive framework that sample information layer 2 and state fluid layer 3 are formed, build by data preprocessing module 5, the data acquisition of the longitudinal direction that the links such as the generation of state flow information and processing module 8 are formed and generate pattern, build by sample information layer defencive function module 6, the link such as sample information layer interactive function module 7 form sample information layer 2 distribution of information interactive mode, build by state fluid layer defencive function module 10, the link such as state fluid layer interactive function module 11 form state fluid layer 3 distribution of information interactive mode, build the traffic flow information based on corresponding defencive function and data genaration mode, realize the collection of sampled value and other protecting group plinth information 4 and state flow information 9 with mutual, in locality protection system communication construction, to information interaction node 12, according to network topology structure and defencive function, sample information protection zone 14 is divided into according to interactive information, state flow protection zone 15, sample information protection zone internal information interaction node in the protective device of information interaction node 12 and corresponding protection zone, forms respective communication link by the type of interactive information between the protective device of state flow protection zone internal information interaction node, carries out the information interaction between device in region.
In described information interacting method; between device, the electric system state quantity information of communication interaction is not directly transmit original sample value message except carrying out sample values process, be meet COMMUNICATION NETWORK PERFORMANCES require with the demand based on the defencive function communicated carry out data processing after the state flow information that generates.
Described state stream generating method is towards the defencive function information needed modeling based on communication, and the state flow type of definition interactive information, is formed and be easy to data mode mutual in a large number.Electric sampled value analog quantity in electric power system, switching value, state information are converted to corresponding state stream type, the state flow information after process is transmitted.
Device method for information interaction between is combined by device communication construction and locality protection system communication construction and realizes; In locality protection system communication construction, with feasible region protect system communication construction on each node that the device formed according to single assembly communication construction is configured in locality protection system communication construction; Each information interaction node 12 configuration possesses the single protective device of device communication construction, and sample information layer interactive function module 7 and the state fluid layer interactive function module 11 of device carry out information interaction by information link 13.
Single protective device communication construction model 1 as shown in Figure 1 is sample information layer 2 and state fluid layer 3 two levels according to defencive function desired data Type division.Sample information layer 2; sampled value and other protecting group plinth information 4 is obtained by the data acquisition function of device; the data processing of sample information layer is carried out in data preprocessing module 5; and being distributed to sample information layer defencive function module 6 and sample information layer interactive function module 7 by demand, the realization for correlation function provides information transmission.Upwards to be generated by state flow information and processing module 8 carries out the generation of state flow information 9 at state fluid layer 3, and be distributed to state fluid layer defencive function module 10 and state fluid layer interactive function module 11 by demand, the realization for correlation function provides information transmission.
In locality protection system communication construction as shown in Figure 2; corresponding sample information protection zone 14 is divided to selected information interaction node 12; it is 2 that breath interaction node 12 of winning the confidence associates level, is namely connected through the state flow protection zone 15 that element progression is no more than 2 with respective nodes.Carry out the mutual of sampled value information between the protective device of selected information interaction node 12 and sample information protection zone 14 internal information interaction node, between device, communication network configuration and performance distribute the requirement that need meet transformer station's sampling value message and transmit.State flow information interaction is carried out between the protective device of selected information interaction node 12 and state flow protection zone 15 internal information interaction node; communication link performance only need meet the state flow information transmission lower to data volume transmission requirement, and it is mutual to carry out state flow in region between device.
Claims (7)
1. the device method for information interaction between towards the locality protection based on communication, it is characterized in that: the method is utilizing in electric power system in station and on the basis of interior communication network, requirement is realized, the communication construction between extended protection device according to distributed protection function; In single protective device communication construction, adopt Layered Information Interactive framework, build longitudinal data acquisition and generate pattern, build horizontal distribution of information interactive mode, build the traffic flow information based on corresponding defencive function and data genaration mode; In locality protection system communication construction; there is at each information interaction Joint Enterprise the protective device of single device communication construction; according to the division of corresponding protection zone in network topology structure and defencive function, communication link is built to protective device, carry out the information interaction between device in region.
2. the device method for information interaction between towards the locality protection based on communication according to claim 1; it is characterized in that: in information interacting method; between device, the electric system state quantity information of communication interaction is not directly transmit original sample value message except carrying out sample values process, be meet COMMUNICATION NETWORK PERFORMANCES require with the demand based on the defencive function communicated carry out data processing after the state flow information that generates.
3. the device method for information interaction between towards the locality protection based on communication according to claim 2, it is characterized in that: state stream generating method is towards the defencive function information needed modeling based on communication, the state flow type of definition interactive information, is formed and is easy to data mode mutual in a large number; Electric sampled value analog quantity in electric power system, switching value, state information are converted to corresponding state stream type, the state flow information after process is transmitted.
4. the device method for information interaction between towards the locality protection based on communication according to claim 1; it is characterized in that: information interacting method comprises the communication construction of single assembly and the communication construction of locality protection system, by device between inner and device communication construction cooperation implement device between information mutual.
5. the device method for information interaction between towards the locality protection based on communication according to claim 1, it is characterized in that: single device communication construction possesses stratification feature, is two levels according to defencive function desired data Type division; Sample information layer is directly obtain respective electric amount sampled value to realize the conventional principles main protection of corresponding defencive function, backup protection and near field protection; State fluid layer be generated after data processing by this device and and other devices between carry out the defencive function based on information communication between device of the state flow information realization obtained alternately.
6. the device method for information interaction between towards the locality protection based on communication according to claim 1, is characterized in that: single device communication construction longitudinally carries out data acquisition and process between level, laterally carries out data interaction between each device of corresponding level; First device obtains sampling value message and on-off state protection Back ground Information, is distributed to corresponding defencive function and respective associated external device (ED), and obtains external sampling value needed for state flow data genaration in sample information layer after carrying out data prediction; Carry out state flow data genaration at state fluid layer, the state flow information of formation, and carry out information interaction with respective associated external device (ED), the information after interaction process is supplied to the defencive function module based on communication.
7. the device method for information interaction between towards the locality protection based on communication according to claim 1, it is characterized in that: in locality protection system communication construction, in conjunction with power system network Topology connection and the corresponding interaction area of device information interaction model split, sample information protection zone is divided into by there is the mutual protection zone of sampled value with device, different according to association level, and different to device information node Connection Element progression, the protection zone mutual with device existence stream information is divided into state flow protection zone at different levels; To sample information protection zone, between device, communication network configuration and performance distribute the requirement meeting transformer station's sampling value message and transmit, and device can obtain the sampled value information in district, are supplied to the defencive function and state flow information generation use that need corresponding information; To state flow protection zone at different levels, the state flow information transmission that communication link performance meets the demands lower, it is mutual to carry out state flow in region between device.
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