Intelligent substation redundant protection configuration method

Abstract

The application provides a kind of intelligent substation redundant protection configuration method, including first set of protection device action determination and second set of protection device action determination, the first set of protection device action determination step includes judging whether first set of device protection CPU is normal, judging whether first set of device start CPU is normal;First set of device start CPU whether action, first set of device protection CPU whether action;The second set of protection device action determination step includes judging whether second set of device protection CPU is normal, judging whether second set of device start CPU is normal;Second set of device start CPU whether action, second set of device protection CPU whether action.The application retains original protection start and action mode while increasing another set of protection start and action information, so that only one start CPU and one protection CPU in two sets of protection work normally, can also act correctly, saves time for equipment fault maintenance, and improves system reliability and redundancy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of power system, and particularly relates to a redundant protection configuration method for intelligent substation. BACKGROUND

[0002] At present, the protection devices of 220kV and above voltage level in intelligent substation are mostly implemented in dual configuration, each set of protection device has a starting CPU and a protection CPU, during normal operation, the starting CPU and the protection CPU of each set of protection device sample and calculate the collected electrical quantity respectively, when the starting CPU and the protection CPU of the protection device act simultaneously, the protection device outlet trips the corresponding circuit breaker.

[0003] In this way, when one set of starting CPU fails and the other set of protection CPU fails, the dual protection will lose function in the fixed combination of the starting CPU and the protection CPU of each set of protection device.

[0004] In order to avoid this situation, the present method increases another set of protection starting and action information while retaining the original protection starting and action mode, so that only one starting CPU and one protection CPU in the two sets of protection work normally, and the correct action can be performed. SUMMARY

[0005] Therefore, the present application aims to provide a redundant protection configuration method for intelligent substation, so as to solve the technical problem that the dual protection loses function when one set of starting CPU fails and the other set of protection CPU fails in the fixed combination of the starting CPU and the protection CPU of each set of protection device.

[0006] In the first aspect, the present application embodiment provides a redundant protection configuration method for intelligent substation, which comprises first set of protection device action judgment and second set of protection device action judgment.

[0007] The first set of protection device action judgment step comprises:

[0008] Step 1: judging whether the protection CPU of the first set of protection device is normal,

[0009] If yes, step 2 is performed; if no, the first set of protection device fails, and the second set of protection device action judgment is performed.

[0010] Step 2: based on the normal protection CPU of the first set of protection device, judging whether the starting CPU of the first set of protection device is normal,

[0011] If yes, step 3 is performed; if no, the second set of protection device action judgment is performed.

[0012] Step 3: judging whether the starting CPU of the first set of protection devices is in action based on the normal starting CPU of the first set of protection devices,

[0013] If yes, then step 4 is performed; if no, then step 1 is returned.

[0014] Step 4: judging whether the protection CPU of the first set of protection devices is in action,

[0015] If yes, then the first set of protection devices is in action; if no, then step 1 is returned.

[0016] The action judging step of the second set of protection devices comprises:

[0017] Step 5: judging whether the protection CPU of the second set of protection devices is normal,

[0018] If yes, then step 6 is performed; if no, then the second set of protection devices is in fault, and the action judging of the first set of protection devices is performed.

[0019] Step 6: judging whether the starting CPU of the second set of protection devices is normal based on the normal protection CPU of the second set of protection devices,

[0020] If yes, then step 7 is performed; if no, then the action judging of the first set of protection devices is performed.

[0021] Step 7: judging whether the starting CPU of the second set of protection devices is in action based on the normal starting CPU of the second set of protection devices,

[0022] If yes, then step 8 is performed; if no, then step 5 is returned.

[0023] Step 8: judging whether the protection CPU of the second set of protection devices is in action,

[0024] If yes, then the second set of protection devices is in action; if no, then step 5 is returned.

[0025] Further, in step 2, whether the starting CPU of the second set of protection devices is normal is judged,

[0026] If yes, then whether the starting CPU of the second set of protection devices is in action is judged, and if no, then the first set of protection devices is in fault.

[0027] Further, whether the starting CPU of the second set of protection devices is in action is judged,

[0028] If yes, then step 4 is performed, and if no, then step 1 is returned.

[0029] Further, in step 6, whether the starting CPU of the first set of protection devices is normal is judged,

[0030] If yes, it is judged whether the starting CPU of the first set of protection devices is in action, and if no, the second set of protection devices is faulty.

[0031] Further, it is judged whether the starting CPU of the first set of protection devices is in action,

[0032] If yes, step 8 is performed, and if no, step 5 is returned.

[0033] Further, when the protection CPU of the first set of protection devices is normal and in action, the starting CPU of the first set of protection devices is normal and in action or the starting CPU of the second set of protection devices is normal and in action, the first set of protection devices will export action;

[0034] When the protection CPU of the second set of protection devices is normal and in action, the starting CPU of the second set of protection devices is normal and in action or the starting CPU of the first set of protection devices is normal and in action, the second set of protection devices will export action.

[0035] The embodiment of the application brings the following beneficial effects:

[0036] The application provides a redundant protection configuration method for intelligent substation, which retains the original protection starting and action mode, and adds another set of protection starting and action information, so that only one starting CPU and one protection CPU in the two sets of protection devices are normal and work, and the two sets of protection devices can correctly act.

[0037] When the protection CPU of the first set of protection devices is normal and in action, the starting CPU of the first set of protection devices is normal and in action or the starting CPU of the second set of protection devices is normal and in action, the first set of protection devices will export action;

[0038] When the protection CPU of the second set of protection devices is normal and in action, the starting CPU of the second set of protection devices is normal and in action or the starting CPU of the first set of protection devices is normal and in action, the second set of protection devices will export action.

[0039] Therefore, only one starting CPU and one protection CPU in the two sets of devices are normal and work, and the two sets of protection devices can correctly act. Time for equipment fault maintenance is saved, and system reliability and redundancy are improved.

[0040] Other features and advantages of the application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the description, the claims, and the drawings.

[0041] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are specifically described, and the accompanying drawings are used for detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 A single cycle inspection process schematic diagram of the intelligent substation redundant protection configuration method provided for the embodiments of the present application is shown. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0044] Therefore, the intelligent substation redundant protection configuration method provided in the embodiments of the present application can avoid the technical problem that when one set of start CPU and the other set of protection CPU are faulty, the double sets of protection lose functions in the fixed combination of the start CPU and the protection CPU of each set of protection.

[0045] To facilitate the understanding of the present embodiment, first, a kind of intelligent substation redundant protection configuration method disclosed in the embodiments of the present application is introduced in detail, including first set of protection device action judgment and second set of protection device action judgment;

[0046] The first set of protection device action judgment step includes:

[0047] Step 1: judge whether the protection CPU of the first set of protection device is normal,

[0048] If yes, go to step 2; if no, the first set of protection device is faulty, and the second set of protection device action judgment is performed.

[0049] Step 2: based on the normal protection CPU of the first set of protection device, judge whether the start CPU of the first set of protection device is normal,

[0050] If yes, go to step 3; if no, judge whether the start CPU of the second set of protection device is normal.

[0051] Further, judge whether the start CPU of the second set of protection device is normal,

[0052] If yes, judge whether the start CPU of the second set of protection device is action, if no, the first set of protection device is faulty.

[0053] Further, judge whether the start CPU of the second set of protection device is action,

[0054] If yes, go to step 4, if no, return to step 1.

[0055] Step 3: judging whether the starting CPU of the first set of protection devices is normal based on the normal starting CPU of the first set of protection devices,

[0056] If yes, then step 4 is performed; if no, then step 1 is returned to;

[0057] Step 4: judging whether the protection CPU of the first set of protection devices is normal,

[0058] If yes, then the first set of protection devices is exported; if no, then step 1 is returned to.

[0059] The second set of protection devices action judging step comprises:

[0060] Step 5: judging whether the protection CPU of the second set of protection devices is normal,

[0061] If yes, then step 6 is performed; if no, then the second set of protection devices is faulty, and the first set of protection devices action judging is performed;

[0062] Step 6: judging whether the starting CPU of the second set of protection devices is normal based on the normal protection CPU of the second set of protection devices,

[0063] If yes, then step 7 is performed; if no, then whether the starting CPU of the first set of protection devices is normal is judged;

[0064] Further, whether the starting CPU of the first set of protection devices is normal is judged,

[0065] If yes, then whether the starting CPU of the first set of protection devices is normal is judged, if no, then the second set of protection devices is faulty;

[0066] Further, whether the starting CPU of the first set of protection devices is normal is judged,

[0067] If yes, then step 8 is performed, if no, then step 5 is returned to;

[0068] Step 7: judging whether the starting CPU of the second set of protection devices is normal based on the normal starting CPU of the second set of protection devices,

[0069] If yes, then step 8 is performed; if no, then step 5 is returned to;

[0070] Step 8: judging whether the protection CPU of the second set of protection devices is normal,

[0071] If yes, then the second set of protection devices is exported; if no, then step 5 is returned to.

[0072] In the embodiment, the method adds another set of protection starting and action information while keeping the original protection starting and action mode, so that when only one starting CPU and one protection CPU of the two sets of protections are working normally, the first set of protections can also act correctly.

[0073] In the embodiment, when the protection CPU of the first set of protections is normal and acts, the starting CPU of the first set of protections is normal and acts or the starting CPU of the second set of protections is normal and acts, the first set of protections will export action;

[0074] When the protection CPU of the second set of protections is normal and acts, the starting CPU of the second set of protections is normal and acts or the starting CPU of the first set of protections is normal and acts, the second set of protections will export action.

[0075] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0076] It should be noted that in this paper, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A redundant protection configuration method for a smart substation, characterized in that, The first set of protection device action judgment and the second set of protection device action judgment are included. The first set of protection device action judgment step includes: Step 1: judging whether the protection CPU of the first set of protection device is normal, If yes, then proceed to step 2; if no, then the first set of protection device is faulty, and the second set of protection device action judgment is performed; Step 2: judging whether the start CPU of the first set of protection device is normal based on the normal protection CPU of the first set of protection device, If yes, then proceed to step 3; if no, then the second set of protection device action judgment is performed; Step 3: judging whether the start CPU of the first set of protection device is in action based on the normal start CPU of the first set of protection device, If yes, then proceed to step 4; if no, then return to step 1; Step 4: judging whether the protection CPU of the first set of protection device is in action, If yes, then the first set of protection device outlet is in action; if no, then return to step 1; The second set of protection device action judgment step includes: Step 5: judging whether the protection CPU of the second set of protection device is normal, If yes, then proceed to step 6; if no, then the second set of protection device is faulty, and the first set of protection device action judgment is performed; Step 6: judging whether the start CPU of the second set of protection device is normal based on the normal protection CPU of the second set of protection device, If yes, then proceed to step 7; if no, then the first set of protection device action judgment is performed; Step 7: judging whether the start CPU of the second set of protection device is in action based on the normal start CPU of the second set of protection device, If yes, then proceed to step 8; if no, then return to step 5; Step 8: judging whether the protection CPU of the second set of protection device is in action, If yes, then the second set of protection device outlet is in action; if no, then return to step 5; In the step 2, the second set of protection device action judgment includes, judging whether the start CPU of the second set of protection device is normal, If yes, then judging whether the start CPU of the second set of protection device is in action, if no, then the first set of protection device is faulty; The judging whether the start CPU of the second set of protection device is in action includes, judging whether the start CPU of the second set of protection device is in action, If yes, then proceed to step 4, if no, then return to step 1; In the step 6, the first set of protection device action judgment includes, judging whether the start CPU of the first set of protection device is normal, If yes, then judging whether the start CPU of the first set of protection device is in action, if no, then the second set of protection device is faulty; The judging whether the start CPU of the first set of protection device is in action includes, judging whether the start CPU of the first set of protection device is in action, If yes, then proceed to step 8, if no, then return to step 5.

2. The intelligent substation redundant protection configuration method of claim 1, wherein when the protection CPU of the first set of protection device is normal and in action, the start CPU of the first set of protection device is normal and in action or the start CPU of the second set of protection device is normal and in action, the first set of protection device will be in outlet action. ​ When the second set of protection devices is normal and in action, the starting CPU of the second set of protection devices is normal and in action or the starting CPU of the first set of protection devices is normal and in action, the second set of protection devices will export action.

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