CN101854060B - System for evaluating service quality of power ICT network - Google Patents
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Abstract
The invention discloses a system for evaluating service quality of a power ICT network. The system comprises a network management unit, a service management unit, a strategy formulation unit and an evaluation unit, wherein the network management unit is used for acquiring performance parameters of the network; the service management unit is used for acquiring service data and formulating ranks of user services and service quality indexes; the strategy formulation unit is used for formulating an evaluation strategy and setting an evaluation reference value and a weight value; and the evaluation unit is used for evaluating the performance parameters of the network and the service data according to the evaluation strategy, the evaluation reference value and the weight value so as to offer an evaluation result for the reliability and the service quality of the network. By providing the system for evaluating the service quality of the power ICT network, accurate objective basis is provided for network planning and service management of the power ICT network so as to promote the development of the power ICT network and the production and operation of the power.
Description
Technical field
The present invention relates to power information and communication technical field, more specifically to a kind of system for evaluating service quality of power ICT network.
Background technology
Along with deep development and the application of functional electric power network technique, Information ﹠ Communication Technology begins towards links such as the transmission of electricity of electric power energy network, distribution, electricity consumption, generating and energy storage, for it provides communication service two-way, reliable, real-time, high bandwidth.A new generation power information and the communication technology (ICT, Informationand Communication Technologies) network are towards operation of power networks, administer and maintain and the electric power system dedicated network that comprises compunication, various wired and communication set up.The electric power ICT of a new generation network is in the converged communication new information technology, in conjunction with the multi-service of electrical network intelligent development, self-healing and the characteristic such as interactive, for power grid construction provides intelligent control device and network resource scheduling ability flexibly.The two-way transmission of the professional various information stream of smart grid-oriented be can realize by means of ICT network of new generation, thereby two-way, interactive, the self-healing of intelligent grid, safe and reliable data communication services requirement reached.
The intellectuality of electric power system and digitized process have produced a large amount of diversified data messages, and bandwidth and the transmission characteristic of communication network proposed requirements at the higher level, comprise transmission bandwidth, network reliability and quality of service aspect.Along with electrical network once with the construction of electrical secondary system, current 35kV and above transformer station all adopt fiber cluster, the structure of power optical fiber transmission network is also day by day complicated, its running status in whole ICT network architecture will directly affect the function of operation layer.Network reliability is improved on basis at Network Optimization Design, also needs to set up comprehensive reliability assessment means, improves survivability by integrity problem in discovery, the analyzing communication net, satisfies electric power system to the reliability requirement of electric power ICT network.
Because the reliability level of electric power ICT network and quality of service are directly connected to the electrical production operation, therefore provide a kind of effective evaluation system towards electric power ICT network servicequality to have important practical significance.But do not exist in the prior art towards the evaluation system of electric power ICT network servicequality, obviously can not provide accurately objective basis for the planning of electric power ICT network of network and service management simply by virtue of artificial subjective judgement and experience, thereby limited to a great extent the development of electric power ICT network, and then had influence on the electrical production operation.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of towards system for evaluating service quality of power ICT network, for electric power ICT network of network planning and service management provide accurately objective basis.Technical scheme is as follows:
A kind of system for evaluating service quality of power ICT network comprises:
Network management unit is used for the collection network performance parameter;
Service Management Unit is used for the capturing service data, formulates user class of service and Service Quality Metrics;
The policy development unit is used for formulating Evaluation Strategy, and metewand value and weighted value are set;
Evaluation unit is used for according to described Evaluation Strategy and metewand value and weighted value, and network performance parameter and business datum are estimated, and provides the evaluation result to network reliability and quality of service.
Preferably, in the said system, also comprise:
Adjustment unit is used for according to the evaluation result of evaluation unit to network reliability and quality of service, adjusts network operation strategy.
Preferably, in the said system, described network performance parameter comprises discharge characteristic, network state, fault indices and data rate.
Preferably, in the said system, described business datum comprises real time business data and/or historical business datum.
Preferably, in the said system, described evaluation unit adopts the FUZZY WEIGHTED operation method to the evaluation that network performance parameter and business datum are carried out.
By technique scheme as can be known, the present invention is by providing a kind of towards system for evaluating service quality of power ICT network, for electric power ICT network of network planning and service management provide accurately objective basis, thereby the development of electric power ICT network and the production run of electric power have been promoted.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, the accompanying drawing of required use was done to introduce simply during the below will describe the present invention, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of system for evaluating service quality of power ICT network that Fig. 1 provides for the embodiment of the invention;
The structural representation of the another kind of system for evaluating service quality of power ICT network that Fig. 2 provides for the embodiment of the invention.
Embodiment
The invention discloses a kind of system for evaluating service quality of power ICT network, comprising:
Network management unit is used for the collection network performance parameter;
Service Management Unit is used for the capturing service data, formulates user class of service and Service Quality Metrics;
The policy development unit is used for formulating Evaluation Strategy, and metewand value and weighted value are set;
Evaluation unit is used for according to described Evaluation Strategy and metewand value and weighted value, and network performance parameter and business datum are estimated, and provides the evaluation result to network reliability and quality of service.
The present invention is by providing a kind of towards system for evaluating service quality of power ICT network, for the planning of electric power ICT network of network and service management provide accurately objective basis, thereby promoted the development of electric power ICT network and the production run of electric power.
Below in conjunction with accompanying drawing technical scheme of the present invention is clearly and completely described.
As shown in Figure 1, system for evaluating service quality of power ICT network provided by the invention can comprise with lower unit:
The network performance parameter that network management unit 101 gathers will be as the follow-up basic data that network reliability is estimated.
In addition, in the evaluation system that the embodiment of the invention provides, network performance parameter also can be used for the relevant business datum of reflection.
Service Management Unit 102 is used for the capturing service data, formulates user class of service and Service Quality Metrics.
The business datum that Service Management Unit 102 gathers will be as follow-up basic data to service quality assessment.
In addition, Service Management Unit 102 also is responsible to define user class of service and Service Quality Metrics.
For the ease of understanding, below with reference to an instantiation system for evaluating service quality of power ICT network that the embodiment of the invention provides is elaborated.In addition, for convenience, illustrate with service quality assessment emphatically.
Under present power system operation condition, we can divide four user class of services.
Wherein, first grade of service is that electric power time delay hypersensitivity is professional, has the height real-time, interactive, comprises that relaying protection business, professional, the stable system business of dispatching automation, electric energy metrical business and dispatching telephone are professional.It mainly is route protection that communication is had the relaying protection of requirement, when electric power system is broken down, sends trip signal for the circuit breaker of control appliance, and the main equipment that breaks down is excised from system, guarantees that fault-free partly continues operation.Stable system refers to the system that the safety and stability control device by two and above factory station consists of by the communication equipment contact, its major function is to cut machine, cutting load, the stable control of feasible region or wider electric power system, be the second defence line of guaranteeing the power system safety and stability operation, generally be divided into controlling center, substation and actuating station.
Second grade of service is that the electric power delay sensitive is professional, has real-time, interactive, comprises protection management information system, PMU system, transformer substation video surveillance and electric energy quality monitoring system.The major function of PMU system is to utilize GPS synchronised clock technology, concentrates supervision and the stable control of phase angle.Operation and the fault message of protection management information system real-time collecting transformer station for analysis accident, fault location and the evaluation work of adjusting provide scientific basis, so that dispatching management department makes correct analysis and decision, guarantee the safe and stable operation of electrical network.
The 3rd grade of service is non-interactive type electric power real time business, has real-time, comprises ERP, transforming plant primary equipment on-line monitoring and condition detecting system, electricity power market supporting system and thunder and lightning positioning monitoring system.Electrical substation monitoring mainly monitors the circuit situation, is distributed between steel tower and the steel tower, and its information flow direction and service transmission channels and optical cable monitoring system are similar.The thunder and lightning positioning monitoring system is take computer network system as communication medium, adopts advanced network technology, GIS and database technology, can make things convenient for users' expert system of inquiry and analysis thunder and lightning and lightning strike accident on the net.
The 4th grade of service is non real-time power business, comprising: office automation, management information business and scheduling management information system, and such as Email, Webpage etc.Scheduling management information system covers control centre and each transformer station, is respectively to produce the related personnel searches data, transmitting-receiving file in each dispatching patcher information system.
Need to prove, the division methods of the grade of service that the embodiment of the invention provides only is schematically, does not consist of the restriction to grade of service division methods of the present invention.Protection scope of the present invention is all answered in some improvement of doing on any basis not breaking away from grade of service division principle provided by the invention.For example for surpassing can expanding voluntarily according to the actual needs of four grades of service.
In addition, in present applied environment, we with parameters such as service delay, shake, packet loss, the error rate and network availabilities as Service Quality Metrics.
The formulation of Evaluation Strategy is responsible in policy development unit 103, and the setting of metewand value and weighted value.In the formulation of Evaluation Strategy, take into full account the power system operation requirement; The setting of metewand value and weighted value will meet that power grid security requires and the factors such as reliability benchmark regulations and requirement.
Take service quality assessment as example, weight is to weigh a numerical value of each index relative significance level in service quality assessment, generally represents with the relative number form.The result who determines directly to have influence on service quality assessment of weight.Weighted value determine main variation by quality of service index actual value to the quality of service effect, and distinguish graduate user the perceptibility of a certain grade quality of service index considered.
Utilize fiducial value and the weighted value of the evaluation of Evaluation Strategy that policy development unit 103 formulates and setting, and the business datum of the network performance parameter of network management unit 101 collections and Service Management Unit 102 collections, evaluation unit 104 provides the evaluation result to network reliability and quality of service.Thereby for electric power ICT network of network planning and service management provide accurately objective basis.
In at present actual applied environment, the system for evaluating service quality of power ICT network that the embodiment of the invention provides adopts the FUZZY WEIGHTED operation method to the evaluation that network performance parameter and business datum are carried out.Still take service quality assessment as example, below with reference to above the grade of service dividing mode FUZZY WEIGHTED operation method is described in detail.
At first the evaluation index nondimensionalization namely to be eliminated the impact of dimension and the order of magnitude, with the actual value of index be converted into can be comprehensive the index evaluation of estimate, can be comprehensive thereby evaluation index is had.After being converted into the dimensionless index evaluation of estimate that can be weighted fuzzy evaluation in the index actual value with needs assessment, functional operation by the Weighted Fuzzy evaluation, the evaluation of estimate of each quality of service index is comprehensively become the evaluation result index parameter, obtain the evaluation of a globality by the analysis to parameter.
Be the customer service of n for grade, it is p that time delay state, dither state, packet loss, error rate state and network availability state index fiducial value are set
N1, p
N2, p
N3, p
N4And p
N5For example, under present power system operation condition, the situation of minute four user class of services, as shown in the table:
Table 1
Suppose user gradation 1,2,3 ..., N}, it is the grade of service that n is set, satisfy n ∈ 1,2,3 ..., N}, the Service Quality Metrics that a certain grade business is chosen are M, m ∈ 1,2,3 ..., M}, the weight matrix that then can make up is:
Wherein, all Service Quality Metrics of a certain grade of service n of line display can obtain
Row are all user gradations of expression participation evaluation then.q
NmThe FUZZY WEIGHTED coefficient that represents n professional m index.
For example under present power system operation condition, the situation of dividing four user class of services, we select these five Service Quality Metrics of time delay state, dither state, packet loss, error rate state and network availability state as the index fiducial value, and the weight matrix of structure is:
Can obtain corresponding Service Quality Metrics matrix from table 1 is:
After obtaining weight matrix and corresponding Service Quality Metrics matrix, just can utilize following function that all kinds of operational indicators that gather are carried out overall merit.N is user gradation, and m is selected index, and then for N grade, total business evaluation that each business has M index just is:
ρ
N×M＝{ρ
n1，ρ
n2，ρ
n3，ρ
nM，ρ
nM}＝PQ (2)
Carry out the evaluation matrix ρ that can get the corresponding grade of service after the above-mentioned computing
N * M, gather service data on the basis of this matrix, compare, then can make evaluation to current runtime value.Take time delay as example, when quality of service index value is threshold value, if the evaluation of estimate of this index is 60, represent that then this index has only satisfied the QoS demand of the lowest class in the differentiated service grade; When quality of service index value is between threshold value and optimum thresholding, determine the increment of this index evaluation of estimate according to relatively the break rules degree of optimization of threshold value of operational indicator value.
The FUZZY WEIGHTED operation method that the embodiment of the invention provides, the quality of service index is carried out obtaining after nondimensionalization is processed one by one the evaluation of estimate of each quality of service index, then according to the weight of each quality of service index the evaluation of estimate of corresponding quality of service index is weighted and on average obtains this professional comprehensive evaluation result.When quality of service index value was within the optimum threshold range, the evaluation result of this index was outstanding, represented that this index has satisfied optimum QoS requirement; When quality of service desired value value exceeds the fault thresholding more than 1 times during scope, the evaluation of estimate of this index is 0, represents that this index does not satisfy QoS requirement fully; When quality of service index value is between fault thresholding and 2 times of fault thresholdings, according to relatively the break rules degradation of threshold value of operational indicator value, the grade of service or network operation characteristic are consulted again, determine the decrement of this index evaluation of estimate.
Can find out from above-described embodiment, it is a kind of towards system for evaluating service quality of power ICT network that the embodiment of the invention provides, for electric power ICT network of network planning and service management provide accurately objective basis, thereby the development of electric power ICT network and the production run of electric power have been promoted.
In other embodiments, referring to shown in Figure 2, the evaluating service quality of power ICT network method that the embodiment of the invention provides also comprises:
Adjustment unit 105 is used for the evaluation result according to 104 pairs of network reliabilities of evaluation unit and quality of service, adjusts network operation strategy.
After evaluation unit 104 provides evaluation result to network reliability and quality of service, according to this result, we can obtain the accurate judgement to network reliability and quality of service, adjustment unit 105 is adjusted electric power ICT network of network operation strategy according to judged result, namely improves network reliability and quality of service level by the network planning and service management.
Those skilled in the art will be understood that, system embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of module to realize the purpose of the present embodiment scheme.Those of ordinary skills namely can understand and implement in the situation that do not pay creative work.
The above only is the specific embodiment of the present invention; should be pointed out 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 improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a system for evaluating service quality of power ICT network is characterized in that, this system comprises:
Network management unit is used for the collection network performance parameter;
Service Management Unit is used for the capturing service data, formulates user class of service and Service Quality Metrics;
The policy development unit is used for formulating Evaluation Strategy, and metewand value and weighted value are set;
Evaluation unit is used for according to described Evaluation Strategy and metewand value and weighted value, and network performance parameter and business datum are estimated, and provides the evaluation result to network reliability and quality of service.
2. system according to claim 1 is characterized in that, also comprises:
Adjustment unit is used for according to the evaluation result of evaluation unit to network reliability and quality of service, adjusts network operation strategy.
3. system according to claim 1 and 2 is characterized in that, described network performance parameter comprises discharge characteristic, network state, fault indices and data rate.
4. system according to claim 1 and 2 is characterized in that, described business datum comprises real time business data and/or historical business datum.
5. system according to claim 1 and 2 is characterized in that, described evaluation unit adopts the FUZZY WEIGHTED operation method to the evaluation that network performance parameter and business datum are carried out.
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| CN102436519A (en) * | 2011-08-23 | 2012-05-02 | 戴志辉 | Method for synthetically evaluating dynamic reliability of power system automatic device |
| CN104767651B (en) * | 2014-01-07 | 2019-02-26 | 中国移动通信集团黑龙江有限公司 | A kind of multi-service merger processing method, system and device |
| CN105897512B (en) * | 2016-05-10 | 2019-09-10 | 国网冀北电力有限公司信息通信分公司 | A kind of monitoring method and system of Virtual Private Network VPN |
| CN106708786A (en) * | 2016-12-25 | 2017-05-24 | 杭州博烁晟斐智能科技有限公司 | Method and system for calculating problem severity of iron tower based on sensor detection |
| CN107171385A (en) * | 2017-06-01 | 2017-09-15 | 华南农业大学 | A kind of segmentation Energy Consumption Evaluation method for determining load electric power unmanned plane |
| CN108460521A (en) * | 2018-02-02 | 2018-08-28 | 广州供电局有限公司 | The recommendation method and system of the audit target |
| CN109508855A (en) * | 2018-09-27 | 2019-03-22 | 国网福建省电力有限公司信息通信分公司 | A kind of sales service compliance discriminatory analysis method based on big data processing |
| CN114285746A (en) * | 2021-12-13 | 2022-04-05 | 中国电信股份有限公司 | SRv6-TE service link tuning method, device, electronic equipment and readable medium |
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