CN201984840U - Controller for reducing misoperation rate of periodical reactor trip breaker test - Google Patents

Controller for reducing misoperation rate of periodical reactor trip breaker test Download PDF

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Publication number
CN201984840U
CN201984840U CN201120070468XU CN201120070468U CN201984840U CN 201984840 U CN201984840 U CN 201984840U CN 201120070468X U CN201120070468X U CN 201120070468XU CN 201120070468 U CN201120070468 U CN 201120070468U CN 201984840 U CN201984840 U CN 201984840U
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China
Prior art keywords
shpu1
rack
relay
intermediate controlled
contactor
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Expired - Lifetime
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CN201120070468XU
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Chinese (zh)
Inventor
涂彩清
李伟
袁屹昆
宋雨
罗慧
苑伟宇
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Jiangsu Nuclear Power Corp
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Jiangsu Nuclear Power Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

The utility model belongs to the technical field of periodical nuclear power station tests, in particular to a controller for reducing the misoperation rate of a periodical reactor trip breaker test. A contact (K3.3) of a relay (K3) in a middle control cabinet (SHPU1) and a contact (K4.3) of a relay (K4) in the middle control cabinet (SHPU1) are connected in parallel with a 24V power supply and then connected with a relay (K8) in the middle control cabinet (SHPU1), two contacts (K8.1 and K8.2) of the relay (K8) in the middle control cabinet (SHPU1) are connected with both sides of a contactor (K5) in a direct-current power control cabinet (SHP6M3), the anode of the coil of the contactor (K5) in the direct-current power control cabinet (SHP6M3) is connected with the contact (K8.1) of the relay (K8) in the middle control cabinet (SHPU1), the cathode of the coil is connected with the contact (K8.2) of the relay (K8) in the middle control cabinet (SHPU1), and a key switch (S9) is connected before the relay (K8) in the middle control cabinet (SHPU1). The structure of the controller is simple, the controller is easy to put in practice, the misoperation rate is reduced by one order of magnitude under the premise that the rejection rate is not notably increased, and thereby the reliability of the test is effectively enhanced.

Description

A kind of control device that reduces shutdown isolating switch routine test malfunction rate
Technical field
The utility model belongs to nuclear power station routine test technical field, is specially a kind of reduction shutdown isolating switch routine test malfunction rate control device.
Background technology
Former shutdown isolating switch routine test control device structure as shown in Figure 1.The 380V AC power is divided into two-way powers to control rod drive mechanisms (CRD) by contactor K1, K2 in the AC power control rack SHP6M2 respectively, and the 110V direct current is powered to control rod drive mechanisms (CRD) by contactor K5 in the direct supply control rack SHP6M3.Contactor K1 is by 3 controls of relay K in the intermediate controlled rack SHPU1 in the AC power control rack SHP6M2, contactor K2 is by 4 controls of relay K in the intermediate controlled rack SHPU1 in the AC power control rack SHP6M2, and relay K 3, K4 control contactor K5 in the direct supply control rack SHP6M3 simultaneously in the intermediate controlled rack SHPU1.Relay K 3 is by the control of the key switch S1 on the intermediate controlled rack SHPU1 inner control module A5 in the intermediate controlled rack SHPU1, and relay K 4 is controlled by the key switch S2 on the intermediate controlled rack SHPU1 inner control module A6 in the intermediate controlled rack SHPU1.System's normal operation period, relay K 3, K4 adhesive in the intermediate controlled rack SHPU1, contactor K1, K2 in the AC power control rack SHP6M2, also adhesive of contactor K5 in the direct supply control rack SHP6M3,380V exchanges and the 110V direct supply is powered to control rod drive mechanisms (CRD).
Service requirement according to reactor protection system topworks; contactor K5 dead electricity break function in contactor K1, K2 and the direct supply control rack SHP6M3 does not influence control rod drive mechanisms (CRD) 380V Alternating Current Power Supply simultaneously in every month palpus test AC power control rack SHP6M2.The scheme of native system design is that relay K 3, K4 realize in key switch S1 on the intermediate controlled rack SHPU1 inner control module A5 and the control of the key switch S2 on the A6 intermediate controlled rack SHPU1 by rotating respectively.During key switch S 1, relay K 3 dead electricity disconnect in the intermediate controlled rack SHPU1, contactor K5 dead electricity in contactor K1 and the direct supply control rack SHP6M3 in the AC power control rack SHP6M2, judge whether normal disconnection, control rod drive mechanisms (CRD) is by contactor K2 power supply in the AC power control rack SHP6M2, whether recover key switch S1, observing disconnection contactor and relay can be closed; During key switch S 2, relay K 4 dead electricity disconnect in the intermediate controlled rack SHPU1, contactor K5 dead electricity in contactor K2 and the direct supply control rack SHP6M3 in the AC power control rack SHP6M2, judge whether normal disconnection, control rod drive mechanisms (CRD) is by contactor K1 power supply in the AC power control rack SHP6M2, whether recover key switch S2, observing disconnection contactor and relay can be closed.
Native system is a reactor protection system topworks, and outage realizes protection, and therefore outage must be reliable, if but the protection misoperation, control rod drive mechanisms (CRD) mistake dead electricity in other words, reactor has a strong impact on the set steady operation with shutdown, causes economic loss.
In above-mentioned test, the contactor of three power supplies all will disconnect two simultaneously, and a contactor remains closed to driving mechanism powers.If the contactor that remains closed breaks down and disconnect at duration of test, then driving mechanism is dead electricity, the reactor shutdown.Therefore, there is greater risk in this test.In system's actual moving process, because the contactor fault, this test once caused the reactor shutdown.
For fear of the risk that test brings, must under the prerequisite of not obvious increase protection system tripping rate, improve test unit, effectively reduce the equipment malfunction rate, improve test reliability.
Summary of the invention
The purpose of this utility model is to provide a kind of reduction shutdown isolating switch routine test malfunction rate control device; to reduce reactor protection system topworks routine test risk, improve equipment operation reliability and reduction shutdown isolating switch routine test malfunction rate in the test.
The technical solution of the utility model is as follows: a kind of reduction shutdown isolating switch routine test malfunction rate control device comprises intermediate controlled rack SHPU1, AC power control rack SHP6M2 and direct supply control rack SHP6M3; Key switch S1, S2 is installed in intermediate controlled rack SHPU1 inner control module A5 respectively, in the A6, two control module A5 in the intermediate controlled rack SHPU1, A6 is respectively by key switch S1, S2 connects relay K 3 in the intermediate controlled rack SHPU1, K4, relay K 3 is by the contact K3.1 of relay K 3 in the intermediate controlled rack SHPU1 in the intermediate controlled rack SHPU1, K3.2 connects the both sides of contactor K1 in 220V direct supply and the AC power control rack SHP6M2, relay K 4 is by the contact K4.1 of relay K 4 in the intermediate controlled rack SHPU1 in the intermediate controlled rack SHPU1, K4.2 connects the both sides of contactor K2 in 220V direct supply and the AC power control rack SHP6M2, the contact K3.3 of relay K 3 connects relay K 8 in the intermediate controlled rack SHPU1 with the contact K4.3 of the interior relay K 4 of intermediate controlled rack SHPU1 again by the power supply that parallel way is connected a 24V in the intermediate controlled rack SHPU1, two contact K8.1 of relay K 8 in the intermediate controlled rack SHPU1, K8.2 is connected the both sides of contactor K5 in the direct supply control rack SHP6M3, contactor K5 coil electrode connects the contact K8.1 of relay K 8 in the intermediate controlled rack SHPU1 in the direct supply control rack SHP6M3, the coil negative pole connects the contact K8.2 of relay K 8 in the intermediate controlled rack SHPU1, is connected with key switch S9 before the relay K 8 in intermediate controlled rack SHPU1.
The model of relay K 3, K4, K8 is BC7-30-10 in the described intermediate controlled rack SHPU1.
The model of contactor K1, K2 is EH210 in the described AC power control rack SHP6M2.
The model of contactor K5 is EH175 in the described direct supply control rack SHP6M3.
Two control module A5, A6 models are BPS2 in the described intermediate controlled rack SHPU1.
Remarkable result of the present utility model is:
This apparatus structure is simple, implement easily, only increased the relay K 8 identical with relay K 3, K4 model in the intermediate controlled rack SHPU1 and with key switch S1, key switch S9 that the S2 model is identical, do not increase new equipment, thereby avoided design test, had good reference for the improvement of same category of device.
This device can effectively reduce the equipment malfunction rate, and can obviously not increase protection system tripping rate.During test, key switch S 1, S2, S9 can distinguish and test contactor K5 in contactor K1, K2 in the AC power control rack SHP6M2, the direct supply control rack SHP6M3 separately respectively, in whole test process, all the time there are two contactors to remain closed, thereby reduced the risk of control rod drive mechanisms (CRD) dead electricity.
Safe probability calculation result is:
Former scheme malfunction rate: 1.55 * 10 -5L/h; Former scheme tripping rate: 2.6 * 10 -11L/h;
Modification scheme malfunction rate: 6.04 * 10 -6L/h; Modification scheme tripping rate: 4.7 * 10 -11L/h;
Adopt this device under the situation that the tripping rate does not obviously raise, make the malfunction rate reduce an order of magnitude, effectively improved test reliability.
Description of drawings
Fig. 1 is former shutdown isolating switch routine test control device structural drawing;
Fig. 2 is a kind of control device structural drawing that reduces shutdown isolating switch routine test malfunction rate of the utility model;
Among the figure: SHPU1: the intermediate controlled rack; SHP6M2: AC power control rack; SHP6M3: direct supply control rack; K1, K2: contactor in the AC power control rack SHP6M2; K3, K4, K8: relay in the intermediate controlled rack SHPU1; K5: contactor in the direct supply control rack SHP6M3; A5, A6: intermediate controlled rack SHPU1 inner control module; S9: key switch; K3.1, K3.2, K3.3: three contacts of relay K 3 in the intermediate controlled rack SHPU1; K4.1, K4.2, K4.3: three contacts of relay K 4 in the intermediate controlled rack SHPU1; K8.1, K8.2: two contacts of relay K 8 in the intermediate controlled rack SHPU1.
Embodiment
Be described in further detail the utility model is bright below in conjunction with drawings and the specific embodiments.
Shown in the former shutdown isolating switch of Fig. 1 routine test control device structural drawing:
Two control module A5 in the intermediate controlled rack SHPU1, A6 connects relay K 3 in the intermediate controlled rack SHPU1 respectively, K4, relay K 3 is by the contact K3.1 of relay K 3 in the intermediate controlled rack SHPU1 in the intermediate controlled rack SHPU1, K3.2 connects the both sides of contactor K1 in 220V direct supply and the AC power control rack SHP6M2, relay K 4 is by the contact K4.1 of relay K 4 in the intermediate controlled rack SHPU1 in the intermediate controlled rack SHPU1, K4.2 connects the both sides of contactor K2 in 220V direct supply and the AC power control rack SHP6M2, relay K 3 in the intermediate controlled rack SHPU1, K4 passes through the contact K3.3 of relay K 3 in the series connection intermediate controlled rack SHPU1 respectively, the contact K4.3 of relay K 4 connects the both sides of contactor K5 in 220V direct supply and the direct supply control rack SHP6M3 in the intermediate controlled rack SHPU1.The control power supply of contactor is the 220V direct current.Key switch S1, S2 are installed in respectively in intermediate controlled rack SHPU1 inner control module A5, the A6, are connected with relay K 3, K4 in the intermediate controlled rack SHPU1.
Fig. 2 is the structure drawing of device after the improvement on Fig. 1 basis, compare with original structure, the contact K3.3 of relay K 3 no longer directly connects the 220V DC control supply of contactor K5 in the direct supply control rack SHP6M3 in the intermediate controlled rack SHPU1, the contact K4.3 of relay K 4 no longer directly connects the 220V DC control supply of contactor K2 in the direct supply control rack SHP6M3 in the intermediate controlled rack SHPU1, but the contact K4.3 of relay K 4 connects relay K 8 in the intermediate controlled rack SHPU1 that increases newly again by the power supply that parallel way is connected a 24V in the contact K3.3 of the interior relay K 3 of intermediate controlled rack SHPU1 and the intermediate controlled rack SHPU1.Two contact K8.1, K8.2 of relay K 8 are connected the both sides of contactor K5 in the direct supply control rack SHP6M3 in the intermediate controlled rack SHPU1, contactor K5 coil electrode connects the contact K8.1 of relay K 8 in the intermediate controlled rack SHPU1 in the direct supply control rack SHP6M3, the coil negative pole connects the contact K8.2 of relay K 8 in the intermediate controlled rack SHPU1, is connected with key switch S9 before the relay K 8 in intermediate controlled rack SHPU1.
Relay K 3, K4 no longer directly control contactor K5 in the direct supply control rack SHP6M3 in the intermediate controlled rack SHPU1, increase relay K 8 in the intermediate controlled rack SHPU1, relay K 8 in contact K3.3, the K4.3 Parallel Control intermediate controlled rack SHPU1 of relay K 3, K4 in the intermediate controlled rack SHPU1, key switch S9 can control relay K 8 in the intermediate controlled rack SHPU1, contactor K5 in the relay K 8 control direct supply control rack SHP6M3 in the intermediate controlled rack SHPU1.
Key switch S 1, relay K 3 dead electricity disconnect in the intermediate controlled rack SHPU1, and contactor K1 dead electricity disconnects in the AC power control rack SHP6M2; Key switch S 2, relay K 4 dead electricity disconnect in the intermediate controlled rack SHPU1, and contactor K2 dead electricity disconnects in the AC power control rack SHP6M2; Key switch S 9, relay K 8 dead electricity disconnect in the intermediate controlled rack SHPU1, and contactor K5 dead electricity disconnects in the direct supply control rack SHP6M3.Therefore, interior contactor K1, K2 of control contactor SHP6M2 rack, direct supply are controlled contactor K5 in the rack SHP6M3 respectively for key switch S1, S2, S9.In the test,, thereby, finish the test of contactor guaranteeing have under the situation of two contactor closures as long as disconnection key switch S1, S2, S9 can realize disconnecting corresponding contactor separately.
Wherein, two control module A5, A6 models are BPS2 in the intermediate controlled rack SHPU1, the model of relay K 3, K4, K8 all is BC7-30-10 in the intermediate controlled rack SHPU1, the model of contactor K1, K2 is EH210 in the AC power control rack SHP6M2, and the model of contactor K5 is EH175 in the direct supply control rack SHP6M3.

Claims (5)

1. one kind is reduced shutdown isolating switch routine test malfunction rate control device, comprises intermediate controlled rack SHPU1, AC power control rack SHP6M2 and direct supply control rack SHP6M3; Key switch S1, S2 is installed in intermediate controlled rack SHPU1 inner control module A5 respectively, in the A6, two control module A5 in the intermediate controlled rack SHPU1, A6 is respectively by key switch S1, S2 connects relay K 3 in the intermediate controlled rack SHPU1, K4, relay K 3 is by the contact K3.1 of relay K 3 in the intermediate controlled rack SHPU1 in the intermediate controlled rack SHPU1, K3.2 connects the both sides of contactor K1 in 220V direct supply and the AC power control rack SHP6M2, relay K 4 is by the contact K4.1 of relay K 4 in the intermediate controlled rack SHPU1 in the intermediate controlled rack SHPU1, K4.2 connects the both sides of contactor K2 in 220V direct supply and the AC power control rack SHP6M2, it is characterized in that: the contact K3.3 of relay K 3 connects relay K 8 in the intermediate controlled rack SHPU1 with the contact K4.3 of the interior relay K 4 of intermediate controlled rack SHPU1 again by the power supply that parallel way is connected a 24V in the intermediate controlled rack SHPU1, two contact K8.1 of relay K 8 in the intermediate controlled rack SHPU1, K8.2 is connected the both sides of contactor K5 in the direct supply control rack SHP6M3, contactor K5 coil electrode connects the contact K8.1 of relay K 8 in the intermediate controlled rack SHPU1 in the direct supply control rack SHP6M3, the coil negative pole connects the contact K8.2 of relay K 8 in the intermediate controlled rack SHPU1, is connected with key switch S9 before the relay K 8 in intermediate controlled rack SHPU1.
2. a kind of reduction shutdown isolating switch routine test malfunction rate control device according to claim 1 is characterized in that: the model of relay K 3, K4, K8 is BC7-30-10 in the described intermediate controlled rack SHPU1.
3. a kind of reduction shutdown isolating switch routine test malfunction rate control device according to claim 1 is characterized in that: the model of contactor K1, K2 is EH210 in the described AC power control rack SHP6M2.
4. a kind of reduction shutdown isolating switch routine test malfunction rate control device according to claim 1 is characterized in that: the model of contactor K5 is EH175 in the described direct supply control rack SHP6M3.
5. a kind of reduction shutdown isolating switch routine test malfunction rate control device according to claim 1 is characterized in that: two control module A5, A6 models are BPS2 in the described intermediate controlled rack SHPU1.
CN201120070468XU 2011-03-17 2011-03-17 Controller for reducing misoperation rate of periodical reactor trip breaker test Expired - Lifetime CN201984840U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103794255A (en) * 2012-10-31 2014-05-14 中国广东核电集团有限公司 T3 test loop of reactor protection system in nuclear power station and optimization method thereof
CN110120269A (en) * 2019-05-29 2019-08-13 中国核动力研究设计院 One kind effectively eliminating the extended shutdown design method of nuclear power plant's reactor rod drop time

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103794255A (en) * 2012-10-31 2014-05-14 中国广东核电集团有限公司 T3 test loop of reactor protection system in nuclear power station and optimization method thereof
CN110120269A (en) * 2019-05-29 2019-08-13 中国核动力研究设计院 One kind effectively eliminating the extended shutdown design method of nuclear power plant's reactor rod drop time
CN110120269B (en) * 2019-05-29 2020-10-23 中国核动力研究设计院 Reactor shutdown design method for effectively eliminating extension of rod falling time of nuclear power plant reactor

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Granted publication date: 20110921