CN112231126A - Method for determining redundancy structure of core component of domestic relay protection - Google Patents
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Abstract
The invention discloses a method for determining a core component redundancy structure of home-made relay protection, which comprises the steps of firstly selecting a proper redundancy mode from different redundancy modes; according to the reliability of each core component, the failure rate of each core component under different redundancy modes is calculated; according to a series reliability model of the relay protection device, the failure rate of the relay protection device after the core components are combined is obtained, and a redundancy mode which does not meet the reliability requirement is selected; and according to the sequence of the cost of the core components from low to high, the number of the components is gradually increased one by one until the requirement of the relay protection reliability is met, and thus the core component redundancy structure which meets the requirement of the domestic relay protection reliability and has the minimum cost is determined. The method is easy to implement, high in practicability, capable of accurately determining the redundant structure of the home-made relay protection core component and has important theoretical significance and engineering value.
Description
Technical Field
The invention relates to the technical field of power system relay protection, in particular to a method for determining a core component redundancy structure of domestic relay protection.
Background
The relay protection is used as a first defense line for guaranteeing the safe and stable operation of the power grid, is an important component of the whole power system, and the reliability of the relay protection is also an important guarantee for preventing the expansion of power grid accidents and chain reactions. The CPU, the DSP, the FPGA, the storage chip, the ADC, the power chip and other components are used as core components of the relay protection device, and the performance of each component influences the defects and action conditions of the whole relay protection device, so that the power system is influenced. The core components of the relay protection device are key links for maintaining the reliable action of the relay protection system and ensuring the safety of a large power grid. At present, the foundation of a domestic chip is weak, and the performance of the produced chip is different from that of an imported chip, so that devices produced by manufacturers of relay protection devices have to depend on imported core components, and the problem that whether the domestic relay protection core components can meet the reliability of relay protection is more and more worth paying attention.
The prior art scheme mainly focuses on the research on the whole relay protection device, and generally defaults to import products for core components of the protection device, such as a CPU, a DSP, an FPGA, a storage chip, an ADC, a power supply chip and the like. After the domestic chip is adopted for replacement, the performance of the core components may be reduced, which may cause the reliability of the relay protection to be reduced and threaten the safety of the power system. Therefore, it is necessary to improve reliability by redundancy of core components to reduce the failure probability of the relay protection device. Meanwhile, the reliability requirement is met by applying the cost as little as possible, and a method for determining the redundancy structure of the home-made relay protection core component is lacked in the prior art.
Disclosure of Invention
The method is easy to implement, high in practicability, capable of accurately determining the redundancy structure of the core component of the home-made relay protection, and has important theoretical significance and engineering value.
The purpose of the invention is realized by the following technical scheme:
a method for determining a redundant structure of a core component of a home-made relay protection comprises the following steps:
and 4, gradually increasing the number of the components one by one according to the sequence of the cost of the core components from low to high until the requirement of the relay protection reliability is met, and determining the core component redundant structure which meets the requirement of the domestic relay protection reliability and has the minimum cost.
The technical scheme provided by the invention shows that the method is easy to implement, has strong practicability, can accurately determine the redundant structure of the home-made relay protection core component, and has important theoretical significance and engineering value.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for determining a redundant structure of a core component of a home-made relay protection according to an embodiment of the present invention;
FIG. 2 is a logic diagram of a two-out-of-three redundancy configuration according to an embodiment of the present invention;
FIG. 3 is a logic diagram of a two out of four first or last and redundancy configuration selected in accordance with an embodiment of the present invention;
fig. 4 is a flowchart of a method for gradually increasing the number of core components according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the present invention will be further described in detail with reference to the accompanying drawings, and as shown in fig. 1, a schematic flow chart of a method for determining a redundant structure of a core component of a localized relay protection provided in the embodiment of the present invention is shown, where the method includes:
in step 1, the process of selecting a suitable redundancy mode specifically includes:
theoretically, the reliability is higher when the number of redundant components is larger, but the cost is higher when the number of redundant components is larger, and a method for increasing the reliability by increasing the number of components infinitely is not preferable in practical application. The economic efficiency and the reliability are comprehensively considered, and the four-redundancy method and the three-redundancy method can meet the reliability requirement with the cost as less as possible. Furthermore, according to a minority obeying majority principle, a three-out-of-two redundancy mode is selected in the three redundancy method, and a four-out-of-two first or second and also include a two-out-of-one logic principle in the four redundancy method, and a four-out-of-two first or second and redundancy mode is selected.
The two-out-of-three redundancy mode is a redundancy mode in which an outlet is operated when at least 2 components in 3 components operate. When the two-out-of-three redundancy is adopted, when at least 2 components fail, the whole module fails, and the redundancy configuration logic is shown in fig. 2. Assuming that core components of the same type have the same failure rate, the failure rate expression in the redundancy mode of three and two is as follows:
λ1＝3λ2-2λ3
the two-out-of-four redundancy mode means that 4 components are independent and have the same function, and the output logic mode and the function are different. Assuming that the core components of the same type have the same failure rate, a two-by-two first or second output and then and mode is adopted, and the redundancy configuration logic is shown in fig. 3, the failure rate expression in the four-by-two first or second and redundancy mode is:
λ2＝2λ2-λ4
therefore, the selected suitable redundancy modes are a mode of taking two out of three and a mode of taking two out of four first or then taking redundancy.
in the step 2, the specific process is as follows:
firstly, the failure rate of each core component under two different redundancy modes is obtained according to the reliability of different core components and based on the failure rate expressions of the two redundancy modes.
In a specific example, the failure rates of the core components are obtained according to the reliability of the different core components as shown in table 1:
TABLE 1 core component failure rate of relay protection device
Further, the failure rate of each core component is substituted into the failure rate expressions of the two redundancy modes, and the failure rate of each core component under the two different redundancy modes is obtained as shown in table 2:
TABLE 2 failure rates of different redundancy modes of each core device
in the step 3, the specific process is as follows:
according to the principle of a series reliability model of the relay protection device, all components are combined in the same redundancy mode respectively, the failure rate of the relay protection device under two different redundancy modes is obtained, and the failure rate of the relay protection device under the three-to-two redundancy mode is as follows:
the failure rate of the relay protection device in a mode of taking two from four, firstly or secondly and redundancy is as follows:
wherein λ iskThe failure rate of each core component.
Further, a minimum reliability requirement of the relay protection device is set, namely the maximum failure rate lambda allowed by the relay protection device0。
Finally, selecting a redundant mode which does not meet the reliability requirement of the relay protection device from the two redundant modes, namely lambda is more than lambda0All the core components of the redundancy mode are b0And (4) respectively.
In a specific example, all the components are combined in a two-out-of-three redundancy mode, and the failure rate of the relay protection device in the two-out-of-three redundancy mode is 0.01812x10-6H; all the components are combined in a mode of taking two out of four first or then combining with a redundancy mode to obtain the failure rate of the relay protection device in the mode of taking two out of four first or then combining with the redundancy mode of 0.01208x10-6/h。
Further, the maximum failure rate lambda allowed by the relay protection device is set0＝0.01685x10-6/h。
Based on the failure rates of the two redundancy modes, the three-out-of-two redundancy mode does not meet the reliability requirement, and each core component is 3.
And 4, gradually increasing the number of the components one by one according to the sequence of the cost of the core components from low to high until the requirement of the relay protection reliability is met, and determining the core component redundant structure which meets the requirement of the domestic relay protection reliability and has the minimum cost.
In the step 4, the specific process is as follows:
according to the cost of each core component, the sequence from low to high is a1＜a2＜a3＜a4＜a5＜a6；
First add 1 a1Component, then a1The number of the components is b0+1, the number of the other components is b0And calculating the failure rate lambda' of the relay protection device:
if lambda' is less than or equal to lambda0The requirement of relay protection reliability is met;
if λ' > λ0If the requirement of relay protection reliability is not met, 1 a is continuously added2A component;
and by analogy, the number of the core components is increased one by one from low to high in the order of cost until the requirement of the relay protection reliability is met, and the core component redundancy structure which meets the requirement of the domestic relay protection reliability and has the minimum cost is determined.
In a specific example, the cost of each core component of the relay protection device is shown in table 3, and the cost of each core component is in the order of power supply < ADC < DSP < storage < FPGA < CPU from low to high.
TABLE 3 core component cost of the relay protection device
Firstly, 1 power supply component is added, the number of the power supply components is 4, the number of the other components is 3, and the failure rate of the relay protection device is 0.01799x10-6/h＞λ0The relay protection reliability requirement is not met;
and if 1 ADC component is continuously added, the number of the power supply and the ADC components is 4, the number of the other components is 3, and the failure rate of the relay protection device is 0.01748x10-6/h＞λ0The relay protection reliability requirement is not met;
and continuously adding 1 DSP element, the number of the power supply, the ADC and the DSP element is 4, the number of the other elements is 3, and the failure rate of the relay protection device is 0.01613x10-6/h＜λ0And the requirement of relay protection reliability is met.
Therefore, when the requirement on relay protection reliability is met and the minimum cost is met, the CPU, the FPGA and the storage components in the relay protection device adopt a two-out-of-three redundant structure, and the power supply, the ADC and the DSP adopt a two-out-of-four first or second first and redundant structure.
It is noted that those skilled in the art will recognize that embodiments of the present invention are not described in detail herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A method for determining a core component redundancy structure of home-made relay protection is characterized by comprising the following steps:
step 1, selecting a proper redundancy mode from different redundancy modes;
step 2, solving the failure rate of each core component under different redundancy modes according to the reliability of each core component;
step 3, solving the failure rate of the relay protection device after the core components are combined according to the series reliability model of the relay protection device, and selecting a redundancy mode which does not meet the reliability requirement;
and 4, gradually increasing the number of the components one by one according to the sequence of the cost of the core components from low to high until the requirement of the relay protection reliability is met, and determining the core component redundant structure which meets the requirement of the domestic relay protection reliability and has the minimum cost.
2. The method for determining the redundant structure of the core component of the home-made relay protection according to claim 1, wherein in the step 1, the process of selecting a suitable redundancy mode specifically comprises:
theoretically, the reliability is higher when the number of redundant components is larger, but the cost is higher when the number of redundant components is larger, and a method for improving the reliability by increasing the number of components infinitely is not preferable in practice; the economy and the reliability are comprehensively considered, and the four-redundancy method and the three-redundancy method can meet the reliability requirement with the cost as less as possible; furthermore, according to a minority obeying majority principle, a three-out-of-two redundancy mode is selected in the three redundancy method, and in the four redundancy method, a four-out-of-two first or second and a four-out-of-one first logic principle are included, so that a four-out-of-two first or second and redundancy mode is selected;
the two-out-of-three redundancy mode is a redundancy mode in which an outlet is operated when at least 2 components in 3 components operate; when two-out-of-three redundancy is adopted, when at least 2 components fail, the whole module can fail; assuming that core components of the same type have the same failure rate, the failure rate expression in the redundancy mode of three and two is as follows:
the two-out-of-four redundancy mode means that 4 components are independent and have the same function, different output logic modes and different functions; assuming that core components of the same type have the same failure rate, and adopting a mode of outputting every two first or then outputting and then combining, the failure rate expression under a mode of taking two first or then and redundancy is as follows:
therefore, the selected suitable redundancy modes are a mode of taking two out of three and a mode of taking two out of four first or then taking redundancy.
3. The method for determining the redundancy structure of the core components of the home-made relay protection according to claim 1, wherein in the step 2, the process of calculating the failure rate of each core component in different redundancy modes specifically comprises:
firstly, the failure rate of each core component under two different redundancy modes is obtained according to the reliability of different core components and based on the failure rate expressions of the two redundancy modes.
4. The method for determining the redundant structure of the core component of the home-made relay protection according to claim 1, wherein in the step 3, the process of obtaining the failure rate of the relay protection device after the core component is combined and selecting the redundant mode which does not meet the reliability requirement specifically comprises the following steps:
according to the principle of a series reliability model of the relay protection device, all components are combined in the same redundancy mode respectively, the failure rate of the relay protection device under two different redundancy modes is obtained, and the failure rate of the relay protection device under the three-to-two redundancy mode is as follows:
the failure rate of the relay protection device in a mode of taking two from four, firstly or secondly and redundancy is as follows:
wherein,
failure rate of each core component;
further, a minimum reliability requirement of the relay protection device, namely the maximum failure rate allowed by the relay protection device, is set
；
Finally, the reliability of the relay protection device which does not meet the requirement is selected from the two redundancy modesRedundancy of sexual requirements, i.e.
All the core components of the redundancy mode are
And (4) respectively.
5. The method for determining the redundant structure of the core component of the home-made relay protection according to claim 1, wherein in the step 4, the number of the components is gradually increased one by one according to the sequence of the cost of the core component from low to high until the reliability requirement of the relay protection is met, and the process for determining the redundant structure of the core component which meets the reliability requirement of the home-made relay protection and has the minimum cost specifically comprises the following steps:
according to the cost of each core component, the sequence from low to high is a1＜a2＜a3＜a4＜a5＜a6；
First add 1 a1Component, then a1The number of the components is
The number of the other components is
Calculating the failure rate of the relay protection device
：
If it is
The requirement of relay protection reliability is met;
if it is
Then, thenThe requirement of relay protection reliability is not met, and 1 a is continuously added2A component;
and by analogy, the number of the core components is increased one by one from low to high in the order of cost until the requirement of the relay protection reliability is met, and the core component redundancy structure which meets the requirement of the domestic relay protection reliability and has the minimum cost is determined.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113011046A (en) * | 2021-04-19 | 2021-06-22 | 华北电力大学 | Method for determining redundant structure of relay protection core component |
| CN113111532A (en) * | 2021-04-20 | 2021-07-13 | 华北电力大学 | National production relay protection core component redundancy number determination method |
| CN113158460A (en) * | 2021-04-20 | 2021-07-23 | 华北电力大学 | Method for determining replacement sequence of home-made relay protection core components |
| CN113221333A (en) * | 2021-04-21 | 2021-08-06 | 华北电力大学 | Single-device relay protection reliability assessment method suitable for localization of core components |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180340554A1 (en) * | 2017-05-05 | 2018-11-29 | Aurora Flight Sciences Corporation | Pneumatic Actuation Systems Having Improved Feedback Control |
| CN208445269U (en) * | 2018-08-07 | 2019-01-29 | 成都智达电力自动控制有限公司 | A kind of belief system of protective relaying device |
| US20190146474A1 (en) * | 2016-05-09 | 2019-05-16 | Strong Force Iot Portfolio 2016, Llc | Methods and systems of industrial production line with self organizing data collectors and neural networks |
-
2020
- 2020-09-15 CN CN202010966762.2A patent/CN112231126A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190146474A1 (en) * | 2016-05-09 | 2019-05-16 | Strong Force Iot Portfolio 2016, Llc | Methods and systems of industrial production line with self organizing data collectors and neural networks |
| US20180340554A1 (en) * | 2017-05-05 | 2018-11-29 | Aurora Flight Sciences Corporation | Pneumatic Actuation Systems Having Improved Feedback Control |
| CN208445269U (en) * | 2018-08-07 | 2019-01-29 | 成都智达电力自动控制有限公司 | A kind of belief system of protective relaying device |
Non-Patent Citations (2)
| Title |
|---|
| AMIR HOSSEIN ETEMADI 等: "Design and Routine Test Optimization of Modern Protection Systems With Reliability and Economic Constraints", 《IEEE TRANSACTIONS ON POWER DELIVERY》, vol. 27, no. 1, 11 November 2011 (2011-11-11), pages 271 - 278, XP011390564, DOI: 10.1109/TPWRD.2011.2170859 * |
| 薛安成 等: "计及核心元器件的继电保护装置Markov模型及其影响因素分析", 《电网技术》, vol. 45, no. 6, 28 June 2020 (2020-06-28), pages 2380 - 2387 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113011046A (en) * | 2021-04-19 | 2021-06-22 | 华北电力大学 | Method for determining redundant structure of relay protection core component |
| CN113111532A (en) * | 2021-04-20 | 2021-07-13 | 华北电力大学 | National production relay protection core component redundancy number determination method |
| CN113158460A (en) * | 2021-04-20 | 2021-07-23 | 华北电力大学 | Method for determining replacement sequence of home-made relay protection core components |
| CN113221333A (en) * | 2021-04-21 | 2021-08-06 | 华北电力大学 | Single-device relay protection reliability assessment method suitable for localization of core components |
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