CN105307202A - Method for evaluating availability of distribution automation wireless communication - Google Patents
Method for evaluating availability of distribution automation wireless communication Download PDFInfo
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- CN105307202A CN105307202A CN201510618391.8A CN201510618391A CN105307202A CN 105307202 A CN105307202 A CN 105307202A CN 201510618391 A CN201510618391 A CN 201510618391A CN 105307202 A CN105307202 A CN 105307202A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a method for evaluating availability of distribution automation wireless communication, wherein the method comprises the following steps: 1) setting and calculating detailed evaluation indexes according to the characteristics of wireless public network communication; 2) establishing an evaluation model, setting different weights according influence degrees of the detailed indexes on the availability of a power distribution terminal, weighting a calculation result for evaluating the availability of wireless communication, the basic calculation formula is R = (the expression is described in the specification), wherein (the expression is described in the specification) refers to a communication influence degree, (the expression is described in the specification) refers to weights of the indexes, and R refers to the availability of a wireless communication terminal; 3) generating an evaluation report and displaying an evaluation result, wherein the evaluation report is in a graphic manner; and 4) arranging onsite lack for the power distribution terminal with low availability to improve the availability of the power distribution terminal and the practicability of a distribution automation system. According to the method disclosed by the invention, the availability of wireless communication is evaluated by setting the detailed evaluation indexes and adopting a comprehensive index evaluation method, which can both reflect the characteristics of the wireless communication and can scientifically evaluate the availability of communication.
Description
Technical field
The present invention relates to power distribution automation communication technical field, particularly relate to a kind of power distribution automation radio communication usability evaluation method.
Background technology
Carrying out in Distribution Automation Construction and application process, whether successfully main website and terminal communication are power distribution automation application key factors, the supervision of power distribution network running status, control and troubleshooting all depend on communication network to realize, at present, EPON(Ethernet passive optical network is adopted) technology is undoubtedly a reasonable selection.But due to the reason that urban construction and power circuit are planned, there is the factors such as optical cable construction difficulty, therefore consider to have employed radio communication system to realize distribution automation data acquisition, wireless public network communication is because its deployment is rapid, coverage rate is high, not by features such as region restrictions, apply more and more at power distribution automation.Although wireless public network communication plan is with the obvious advantage, same exist some shortcomings: communication delay is comparatively large, communication stability is poor etc., and cause the distribution terminal adopting wireless public network communication, online rate presents the waveform of switch-on and-off, affects the availability of distribution terminal.
Owing to adopting the part terminal of radio communication, not there is the online rate of terminal high but do not affect day-to-day operation market demand, also can there is the online rate of terminal very high but when system remote control operation or power grid accident occur, disabled phenomenon occurs.Therefore to the distribution terminal availability adopting terminal online rate index to evaluate radio communication, there is certain limitation, only by the online rate index of terminal cannot accurate evaluation with judge the problem points of communication failure and analyze the availability communicated.At present due to evaluation criterion disunity, also lack the method evaluating wireless public network availability of communications.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of power distribution automation radio communication usability evaluation method, both truly can reflect the feature of radio communication, scientifically assess availability of communications again.
The technical solution adopted for the present invention to solve the technical problems is:
Power distribution automation radio communication usability evaluation method, is characterized in that comprising the steps:
1) postpone feature that is large, poor stability according to wireless public network communication port, set and the detailed index of Calculation Estimation;
2) assessment models is set up, according to the degree of detailed index to distribution terminal availability impact
, each index weights is set
, be multiplied by according to index weights the availability R that the mode that adds up of communication influence degree assesses wireless communication terminal, the computing formula of wireless communication terminal availability R is;
R=
3) generate assessment report and present assessment result;
4) low to availability distribution terminal, arranges on-the-spot place to lack, improve distribution terminal availability and electrical power distribution automatization system practical.
As the improvement of technique scheme, the detailed index of described evaluation comprises the average online rate of terminal, the average online rate of single terminal, terminal communication channel delay time, terminal communication interruption times, terminal communication break period, single wireless module average online rate, wireless module interruption times.
As the improvement of technique scheme, the weight of described index, can finely tune according to power distribution automation operating index result, adjustment assessment result.
As the improvement of technique scheme, the average online rate of described terminal is used for the overall online rate situation of evaluation system, reflection terminal overall operation situation, its computing formula is: (in measurement period examination terminal line duration ÷ (examination terminal number × measurement period time)) × 100%.
As the improvement of technique scheme, the average online rate of described single terminal is for evaluating the communication operation conditions of single terminal, its computing formula: (in measurement period single terminal line duration ÷ measurement period time) × 100%.
As the improvement of technique scheme, the described terminal communication channel delay time comprises: terminal communication channel delay maximum time, terminal communication channel delay minimum time and terminal communication channel delay average time, and the described terminal communication channel delay time postpones situation for the radio channel evaluating this terminal; Described terminal communication channel delay maximum time numerical value is larger, represents that this terminal communication channel delay is serious; Per hour as a measurement period, result is stored in history library, timing from the wireless data actuation message of main website is sent, the response message of terminal is received within the acknowledge cycle of setting, calculate response time, count terminal communication channel delay maximum time, terminal communication channel delay minimum time and terminal communication channel delay average.
As the improvement of technique scheme, described terminal communication interruption times can be used for the radio channel stability state evaluating this terminal, and interruption times is larger, and represent this terminal availability lower, communication stability is poor; The input of carrying out adding up terminal by the cycle of inquiry exits data, counts the communication disruption of terminal or exits number of times.
As the improvement of technique scheme, described terminal communication to comprise that maximum time is interrupted in terminal communication, minimum time is interrupted in terminal communication and average time is interrupted in terminal communication break period, and described terminal communication break period is for evaluating the radio channel stability state of this terminal; It is larger that maximum time is interrupted in described terminal communication, points out this terminal availability lower, communicate extremely unreliable; Described terminal communication interrupts minimum time for evaluating the radio channel stability state of this terminal, and this index value is less, even if point out this terminal to there is disruption, but availability is higher, and interruption does not in short-term affect transfer of data; Undertaken adding up the input of terminal by the cycle of inquiry and exit data, count the communication disruption average time of the communication disruption maximum time of terminal, the communication disruption minimum time of terminal and terminal.
As the improvement of technique scheme, the online situation of the evaluation wireless module that average online this index of rate of described single wireless module is simple, is that passage causes or distribution terminal causes extremely for the online rate of distinguishing terminal, can segments abnormal reason; Its computing formula: (in measurement period single wireless module line duration ÷ measurement period time) × 100%.
As the improvement of technique scheme, described wireless module interruption times can be used for the radio channel stability state evaluating this wireless module, analyze together with terminal communication interruption times, distinguish and cause the reason of communication disruption to be that radio channel causes or distribution terminal causes; The input of carrying out adding up wireless module by the cycle of inquiry exits data, counts the communication disruption of wireless module or exits number of times.
As the improvement of technique scheme, described assessment report adopts graphics mode.
Beneficial effect of the present invention has: a kind of power distribution automation radio communication of the present invention usability evaluation method, by setting detailed evaluation index, adopt the method for overall target evaluation, assess the availability of radio communication, efficiently solve and solve wireless public network distribution terminal availability of communications evaluation problem, overcome and only use the online rate index of distribution terminal to evaluate the limitation of distribution terminal availability, both truly can reflect the feature of radio communication, scientifically assess availability of communications again.
Accompanying drawing explanation
Below in conjunction with drawings and the specific embodiments, the invention will be further described, wherein:
Fig. 1 is the method flow diagram of the embodiment of the present invention.
Embodiment
See Fig. 1, a kind of power distribution automation radio communication of the present invention usability evaluation method comprises the steps:
Power distribution automation radio communication usability evaluation method, is characterized in that comprising the steps:
1) postpone feature that is large, poor stability according to wireless public network communication port, set and the detailed index of Calculation Estimation;
2) assessment models is set up, according to the degree of detailed index to distribution terminal availability impact
, each index weights is set
the weight of described index, can finely tune according to power distribution automation operating index result, adjustment assessment result, be multiplied by according to index weights the availability R that the mode that adds up of communication influence degree assesses wireless communication terminal, the computing formula of wireless communication terminal availability R is;
R=
3) generate assessment report and present assessment result, described assessment report adopts graphics mode;
4) low to availability distribution terminal, arranges on-the-spot place to lack, improve distribution terminal availability and electrical power distribution automatization system practical.
The detailed index of described evaluation comprises the average online rate of terminal, the average online rate of single terminal, terminal communication channel delay time, terminal communication interruption times, terminal communication break period, single wireless module average online rate, wireless module interruption times.The average online rate of described terminal is used for the overall online rate situation of evaluation system, reflection terminal overall operation situation, and its computing formula is: (in measurement period examination terminal line duration ÷ (examination terminal number × measurement period time)) × 100%.The average online rate of described single terminal is for evaluating the communication operation conditions of single terminal, its computing formula: (in measurement period single terminal line duration ÷ measurement period time) × 100%.
The described terminal communication channel delay time comprises: terminal communication channel delay maximum time, terminal communication channel delay minimum time and terminal communication channel delay average time, and the described terminal communication channel delay time postpones situation for the radio channel evaluating this terminal; Described terminal communication channel delay maximum time numerical value is larger, represents that this terminal communication channel delay is serious; Per hour as a measurement period, result is stored in history library, timing from the wireless data actuation message of main website is sent, the response message of terminal is received within the acknowledge cycle of setting, calculate response time, count terminal communication channel delay maximum time, terminal communication channel delay minimum time and terminal communication channel delay average.
Described terminal communication interruption times can be used for the radio channel stability state evaluating this terminal, and interruption times is larger, and represent this terminal availability lower, communication stability is poor; The input of carrying out adding up terminal by the cycle of inquiry exits data, counts the communication disruption of terminal or exits number of times.Described terminal communication to comprise that maximum time is interrupted in terminal communication, minimum time is interrupted in terminal communication and average time is interrupted in terminal communication break period, and described terminal communication break period is for evaluating the radio channel stability state of this terminal; It is larger that maximum time is interrupted in described terminal communication, points out this terminal availability lower, communicate extremely unreliable; Described terminal communication interrupts minimum time for evaluating the radio channel stability state of this terminal, and this index value is less, even if point out this terminal to there is disruption, but availability is higher, and interruption does not in short-term affect transfer of data; Undertaken adding up the input of terminal by the cycle of inquiry and exit data, count the communication disruption average time of the communication disruption maximum time of terminal, the communication disruption minimum time of terminal and terminal.
The online situation of the evaluation wireless module that average online this index of rate of described single wireless module is simple, is that passage causes or distribution terminal causes extremely for the online rate of distinguishing terminal, can segments abnormal reason; Its computing formula: (in measurement period single wireless module line duration ÷ measurement period time) × 100%.Described wireless module interruption times can be used for the radio channel stability state evaluating this wireless module, analyzes together with terminal communication interruption times, distinguishes and causes the reason of communication disruption to be that radio channel causes or distribution terminal causes; The input of carrying out adding up wireless module by the cycle of inquiry exits data, counts the communication disruption of wireless module or exits number of times.
By the index as following table 1, the weight of definition indices; Terminal aborts number of times is larger to availability impact, can weight is fixed higher, account for 30%, definition interruption 10 these index calculate are worth zero, corresponding, channel delay maximum time was defined as zero more than 30 seconds, channel delay minimum time was defined as zero more than 10 seconds, and interruption maximum time was defined as zero more than 300 seconds, interrupted minimum time and was defined as zero more than 10 seconds, wireless module interruption times is defined as zero more than 30 times, and result of calculation is as follows:
Table 1
The above, just better embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches technique effect of the present invention with any same or similar means, all should belong to protection scope of the present invention.
Claims (11)
1. a power distribution automation radio communication usability evaluation method, is characterized in that comprising the steps:
1) postpone feature that is large, poor stability according to wireless public network communication port, set and the detailed index of Calculation Estimation;
2) assessment models is set up, according to the degree of detailed index to distribution terminal availability impact
, each index weights is set
, be multiplied by according to index weights the availability R that the mode that adds up of communication influence degree assesses wireless communication terminal, the computing formula of wireless communication terminal availability R is;
R=
3) generate assessment report and present assessment result;
4) low to availability distribution terminal, arranges on-the-spot place to lack.
2. a kind of power distribution automation radio communication usability evaluation method according to claim 1, it is characterized in that, the detailed index of described evaluation comprises the average online rate of terminal, the average online rate of single terminal, terminal communication channel delay time, terminal communication interruption times, terminal communication break period, single wireless module average online rate, wireless module interruption times.
3. a kind of power distribution automation radio communication usability evaluation method according to claim 1, is characterized in that, the weight of described index, can finely tune according to power distribution automation operating index result.
4. a kind of power distribution automation radio communication usability evaluation method according to claim 2, it is characterized in that, the average online rate of described terminal is used for the overall online rate situation of evaluation system, reflection terminal overall operation situation, its computing formula is: (in measurement period examination terminal line duration ÷ (examination terminal number × measurement period time)) × 100%.
5. a kind of power distribution automation radio communication usability evaluation method according to claim 2, it is characterized in that, the average online rate of described single terminal is for evaluating the communication operation conditions of single terminal, its computing formula: (in measurement period single terminal line duration ÷ measurement period time) × 100%.
6. a kind of power distribution automation radio communication usability evaluation method according to claim 2, it is characterized in that, the described terminal communication channel delay time comprises: terminal communication channel delay maximum time, terminal communication channel delay minimum time and terminal communication channel delay average time, and the described terminal communication channel delay time postpones situation for the radio channel evaluating this terminal; Described terminal communication channel delay maximum time numerical value is larger, represents that this terminal communication channel delay is serious; Per hour as a measurement period, result is stored in history library, timing from the wireless data actuation message of main website is sent, the response message of terminal is received within the acknowledge cycle of setting, calculate response time, count terminal communication channel delay maximum time, terminal communication channel delay minimum time and terminal communication channel delay average.
7. a kind of power distribution automation radio communication usability evaluation method according to claim 2, it is characterized in that, described terminal communication interruption times can be used for the radio channel stability state evaluating this terminal, and interruption times is larger, represent this terminal availability lower, communication stability is poor; The input of carrying out adding up terminal by the cycle of inquiry exits data, counts the communication disruption of terminal or exits number of times.
8. a kind of power distribution automation radio communication usability evaluation method according to claim 2, it is characterized in that, described terminal communication to comprise that maximum time is interrupted in terminal communication, minimum time is interrupted in terminal communication and average time is interrupted in terminal communication break period, and described terminal communication break period is for evaluating the radio channel stability state of this terminal; It is larger that maximum time is interrupted in described terminal communication, points out this terminal availability lower, communicate extremely unreliable; Described terminal communication interrupts minimum time for evaluating the radio channel stability state of this terminal, and this index value is less, even if point out this terminal to there is disruption, but availability is higher, and interruption does not in short-term affect transfer of data; Undertaken adding up the input of terminal by the cycle of inquiry and exit data, count the communication disruption average time of the communication disruption maximum time of terminal, the communication disruption minimum time of terminal and terminal.
9. a kind of power distribution automation radio communication usability evaluation method according to claim 2, it is characterized in that, the online situation of the evaluation wireless module that average online this index of rate of described single wireless module is simple, extremely be that passage causes or distribution terminal causes for the online rate of distinguishing terminal, abnormal reason can be segmented; Its computing formula: (in measurement period single wireless module line duration ÷ measurement period time) × 100%.
10. a kind of power distribution automation radio communication usability evaluation method according to claim 2, it is characterized in that, described wireless module interruption times can be used for the radio channel stability state evaluating this wireless module, analyze together with terminal communication interruption times, distinguish and cause the reason of communication disruption to be that radio channel causes or distribution terminal causes; The input of carrying out adding up wireless module by the cycle of inquiry exits data, counts the communication disruption of wireless module or exits number of times.
11. a kind of power distribution automation radio communication usability evaluation methods according to claim 1, is characterized in that, described assessment report adopts graphics mode.
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| CN108038598A (en) * | 2017-12-01 | 2018-05-15 | 国网江苏省电力有限公司电力科学研究院 | Power distribution automation index quick calculation method based on day statistics |
| CN113324583A (en) * | 2021-05-26 | 2021-08-31 | 国网辽宁省电力有限公司电力科学研究院 | State evaluation method and system for communication module of distribution automation equipment |
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