JP2019097248A - Diagnostic apparatus for high voltage equipment and diagnostic method therefor - Google Patents
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Abstract
Description
本発明は、高電圧設備の診断装置及びその診断方法に関し、特に、高電圧設備内で発生した異常発熱を検出する技術に関する高電圧設備の診断装置に適用して好適なものである。 The present invention relates to a diagnostic device for high voltage equipment and a diagnostic method thereof, and is particularly suitable for application to a diagnostic device for high voltage equipment regarding a technique for detecting abnormal heat generation generated in the high voltage equipment.
高電圧受電盤は盤の中に多数の導体や開閉器、電流センサ及び変圧器が連結されて構成されている。導体の連結部や開閉器で接続が不良の場合には接触抵抗が増大するため、負荷電流により異常発熱が発生する可能性がある。このような異常発熱による火災を防止するために、高電圧設備の異常発熱部位が無いことを巡視点検により定期的に確認している。しかしながら、巡視労力を軽減するために遠隔監視により異常発熱を検出する方法が考えられている。 The high voltage power receiving board is configured by connecting a large number of conductors, switches, current sensors and transformers in the board. In the case where the connection is poor at the connecting portion of the conductor or the switch, the contact resistance is increased, so that abnormal heat may be generated due to the load current. In order to prevent fires due to such abnormal heat generation, it is regularly confirmed by patrol inspection that there is no abnormal heat generation site of high voltage equipment. However, in order to reduce the inspection effort, a method of detecting abnormal heat generation by remote monitoring is considered.
第１の従来技術としては、主回路導体等の通電体の近傍に、異常発熱検知センサとして折れ曲がりにより発光する化学発光体を設けて，異常発熱時に温度で変形する形状記憶合金が化学発行体を折り曲げることで異常発熱を検出する装置が開示されている（特許文献１参照）。 In the first prior art, a chemical light emitter that emits light due to bending as a sensor for detecting abnormal heat generation is provided in the vicinity of a conducting body such as a main circuit conductor, and a shape memory alloy that deforms due to temperature during abnormal heat generation An apparatus for detecting abnormal heat generation by bending is disclosed (see Patent Document 1).
第２の従来技術としては、電気設備の通電部に、導体の温度が設定値以上に上昇した場合匂いを発生させる匂い発生手段を設置し、匂いセンサにより異常発熱を検出する装置が開示されている（特許文献２参照）。 As a second prior art, there is disclosed an apparatus for detecting an abnormal heat generation by an odor sensor by installing an odor generating means for generating an odor when the temperature of the conductor rises to a set value or more in the conducting part of the electric equipment. (See Patent Document 2).
第３の従来技術としては、盤内に匂いセンサを配置して所定温度異常となる発熱を検知し、警報を発する装置が開示されている（特許文献３参照）。 As a third prior art, there is disclosed an apparatus which arranges an odor sensor in a panel to detect heat generation causing a predetermined temperature abnormality and issue an alarm (see Patent Document 3).
第１の従来技術によれば、発熱の可能性がある対象全てにセンサを配置する必要があり、構成的に複雑になっていた。一方、第２及び第３の従来技術によれば、センサを配置した盤内で異常発熱が発生していることは分かるものの発熱部位を特定するのに時間が掛かる可能性があった。 According to the first prior art, it is necessary to dispose the sensor on all objects that may generate heat, which is structurally complicated. On the other hand, according to the second and third conventional techniques, although it is known that abnormal heat generation has occurred in the panel in which the sensor is arranged, it may take time to specify the heat generation part.
本発明は以上の点を考慮してなされたもので、高電圧設備内において異常発熱が発生している異常発熱部位を簡単な構成ながら特定可能な電圧設備診断装置及びその診断方法を提案しようとするものである。 The present invention has been made in consideration of the above points, and an object of the present invention is to propose a voltage equipment diagnosis apparatus and a diagnosis method capable of specifying an abnormal heat generation site in which abnormal heat generation occurs in high voltage equipment with a simple configuration. It is
かかる課題を解決するため、本発明においては、高電圧設備が配置されている室内に設置された匂いセンサと、前記高電圧設備の高電圧受電盤内の導体接続部及び接点に付着されており所定温度以上で融解した際に特定のガスを発生する異常発熱検知剤と、前記高電圧設備の負荷電流を計測する電流センサと、前記匂いセンサを用いて前記特定のガスの成分を検知することにより異常発熱が発生しているものと判定し、前記匂いセンサの検出値と前記電流センサの電流値との相関によって異常発熱部位を特定する判定部と、を備えることを特徴とする。 In order to solve the problem, in the present invention, the odor sensor installed in the room where the high voltage equipment is disposed, and the conductor connection portion and the contacts in the high voltage power receiving board of the high voltage equipment are attached. An abnormal heat detection agent that generates a specific gas when melted above a predetermined temperature, a current sensor that measures a load current of the high-voltage equipment, and detecting the component of the specific gas using the odor sensor And a determination unit that determines an abnormal heat generation site by a correlation between a detection value of the odor sensor and a current value of the current sensor.
また、本発明においては、高電圧設備の各盤に設置されているとともに特定のガスの成分を検出する特定成分検出手段と、前記高電圧設備の高電圧受電盤内の導体接続部及び接点に付着されており所定温度以上で融解した際に前記特定のガスを発生する異常発熱検知剤と、前記高電圧設備の負荷電流を計測する電流センサと、前記特定成分検出手段を用いて前記特定のガスの成分を検知することにより異常発熱が発生しているものと判定し、前記特定成分検出手段の検出値と前記電流センサの電流値との相関によって異常発熱部位を特定する判定部と、を備えることを特徴とする。 Further, in the present invention, specific component detection means installed on each panel of high voltage equipment and detecting a specific gas component, and conductor connection parts and contacts in the high voltage power reception board of the high voltage equipment. The abnormal heat generation detecting agent which adheres and generates the specific gas when melted at a predetermined temperature or higher, the current sensor which measures the load current of the high voltage equipment, and the specific component detection means using the specific component detection means A determination unit that determines that abnormal heat generation has occurred by detecting the component of the gas, and identifies an abnormal heat generation site by correlating the detection value of the specific component detection means with the current value of the current sensor; It is characterized by having.
また、本発明においては、高電圧設備に特定成分検出手段を設置する設置ステップと、所定温度以上で融解した際に特定のガスを発生する異常発熱検知剤を前記高電圧設備内の導体接続部及び接点に付着させておく付着ステップと、前記特定成分検出手段を用いて前記特定のガスの成分を検知することにより異常発熱が発生しているものと判定部によって判定し、さらに前記判定部が、前記高電圧設備の負荷電流を計測する電流センサの電流値と前記特定成分検出手段の検出値との相関によって異常発熱部位を特定する特定ステップと、を有することを特徴とする。 In the present invention, the installation step of installing the specific component detection means in the high voltage equipment, and the abnormal heat detection agent which generates a specific gas when melted at a predetermined temperature or more, the conductor connection portion in the high voltage equipment And a deposition step for depositing on the contact point, and the determination unit determines that abnormal heat generation is occurring by detecting the component of the specific gas using the specific component detection means, and the determination unit A specific step of specifying an abnormal heat generation site by correlation between a current value of a current sensor that measures a load current of the high voltage equipment and a detection value of the specific component detection means.
本発明によれば、簡単な構成ながら高電圧設備内で異常発熱が発生している異常発熱部位を特定することができる。 According to the present invention, it is possible to identify an abnormal heat generation site where abnormal heat generation is occurring in high-voltage equipment with a simple configuration.
以下、図面について、本発明の一実施の形態について詳述する。
（１）第１の実施の形態
（１−１）高電圧設備の診断装置の構成例
図１は、第１の実施の形態による高電圧設備の診断装置の構成例を示す図である。電気室６外には、波形記録部８、判定部９及び表示装置４が設置されている。これら波形記録部８、判定部９及び表示装置４については後述する。
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
(1) First Embodiment (1-1) Configuration Example of Diagnostic Device for High-Voltage Equipment FIG. 1 is a diagram showing a configuration example of a diagnostic device for high-voltage equipment according to a first embodiment. The waveform recording unit 8, the determination unit 9, and the display device 4 are installed outside the electric chamber 6. The waveform recording unit 8, the determination unit 9, and the display device 4 will be described later.
一方、高電圧設備が配置されている電気室６内には、特定のガスの成分を検出する特定成分検出手段の一例としての後述の匂いセンサ１及びＡ／Ｄ変換器３の他に、高電圧受電盤５が設置されている。高電圧受電盤５は、Ｎｏ．１〜Ｎｏ．４という識別番号が割り当てられた４つの盤から構成されている。高電圧受電盤５は、Ｎｏ．１の盤から流入した負荷電流を識別番号Ｎｏ．３及びＮｏ．４の盤から分配して外部に供給している。高電圧受電盤５は、その内部に、断路器ＤＳや真空遮断器ＶＣＢなどの開閉器、高電圧設備の電圧を計測する電圧センサ、高電圧設備の負荷電流を計測する電流センサＣＴ、並びに、それらの機器を各々接続する導体接続部及び接点を備えている。 On the other hand, in the electric chamber 6 in which the high voltage equipment is disposed, in addition to the odor sensor 1 and the A / D converter 3 described later as an example of the specific component detection means for detecting the component of the specific gas A voltage receiving board 5 is installed. The high voltage power receiving board 5 has no. 1 to No. It consists of four panels assigned an identification number of 4. The high voltage power receiving board 5 has no. The load current flowing from the first panel is identified by the identification number No. 3 and No. It is distributed from the 4th panel and supplied to the outside. The high voltage power receiving board 5 includes switches such as a disconnect switch DS and a vacuum circuit breaker VCB, a voltage sensor for measuring the voltage of high voltage equipment, a current sensor CT for measuring load current of the high voltage equipment, and Conductor connections and contacts are provided to connect those devices respectively.
本実施の形態では、これら導体接続部及び接点に付着されており所定温度以上で融解した際に特定のガスを発生する異常発熱検知剤２が塗布されている。この異常発熱検知剤２は、上記所定温度以上となると融解するワックスであり、上記所定温度以上の異常発熱時に融解し、放出されたガスの成分、すなわち、その分子により匂いセンサ１の検出値を引き上げる役割を果たす。 In this embodiment, the abnormal heat detection agent 2 is applied which is attached to the conductor connection portion and the contact point and generates a specific gas when it is melted at a predetermined temperature or more. The abnormal heat detection agent 2 is a wax that melts when the temperature exceeds the predetermined temperature, and melts at the time of abnormal heat generation above the predetermined temperature, and the component of the gas released, that is, the detected value of the odor sensor 1 Play a role in raising.
本実施の形態による高電圧設備の診断装置は、このように異常発熱検知剤２が導体接続部及び接点（以下「導体接続部」を例示する）に塗布されている他、その電気室６内に、特定のガスの分子を検出可能な匂いセンサ１を備え、さらに、盤内の電流センサＣＴ、匂いセンサ１及び電流センサＣＴのアナログ信号をデジタル信号に変換するＡ／Ｄ変換器３、デジタル信号に変換されたデータを記録する波形記録部８、記録したデータに基づいて異常発熱が発生したか否かを判定する判定部９、及びその異常発熱部位を視覚的に表示する表示装置４を備える。 In the diagnostic apparatus for high voltage equipment according to the present embodiment, the abnormal heat detection agent 2 is thus applied to the conductor connection portion and the contact point (hereinafter, “conductor connection portion” is exemplified), and the inside of the electric chamber 6 , An odor sensor 1 capable of detecting specific gas molecules, and further, an A / D converter 3 for converting analog signals of the current sensor CT, the odor sensor 1 and the current sensor CT in the board into digital signals, A waveform recording unit 8 for recording data converted into a signal, a determination unit 9 for determining whether or not abnormal heat generation has occurred based on the recorded data, and a display device 4 for visually displaying the abnormal heat generation site Prepare.
高電圧受電盤５内での異常発熱は、上述した導体接続部が徐々に緩んで接触不良になったり、断路器ＤＳや真空遮断器ＶＣＢなどの開閉器を動作させた際に接触不良となることが原因である。このように接触不良になると接触抵抗が大きくなり、負荷電流によるジュール発熱で導体接続部や接点などの接触部が異常に加熱される。 The abnormal heat generation in the high-voltage power receiving board 5 causes the above-mentioned conductor connection part to be loose gradually and causes a contact failure, or causes a contact failure when operating switches such as the disconnector DS and the vacuum circuit breaker VCB. Is the cause. When the contact failure occurs in this manner, the contact resistance increases, and the contact portion such as the conductor connection portion or the contact point is abnormally heated by Joule heat generation by the load current.
（１−２）高電圧設備の診断方法
第１の実施の形態による高電圧設備の診断装置は以上のような構成であり、次に図１を参照しつつ、その動作例について説明する。図２は、第１の実施の形態による高電圧設備の診断装置の動作例を示すフローチャートである。図３は、匂いセンサ１の検出値と負荷電流の時間変動の一例を表す図であり、図４は、監視装置の表示画面の一例を示す図であり、図５は、異常発熱が発生した後の匂いセンサの検出値の変化を示す図である。
(1-2) Diagnosis Method for High-Voltage Equipment The diagnosis apparatus for high-voltage equipment according to the first embodiment is configured as described above, and an operation example thereof will now be described with reference to FIG. FIG. 2 is a flow chart showing an operation example of the high-voltage equipment diagnosis apparatus according to the first embodiment. FIG. 3 is a diagram showing an example of the time variation of the detected value of the odor sensor 1 and the load current, FIG. 4 is a diagram showing an example of a display screen of the monitoring device, and FIG. It is a figure which shows the change of the detection value of the later odor sensor.
まず、電気室６内の匂いは匂いセンサ１によって常時検出されている。高電圧受電盤５内の各導体接続部に流れる負荷電流Ｉ１，Ｉ２，Ｉ３（各々図示のＩ１，Ｉ２，Ｉ３に相当）は、それぞれ電流センサＣＴによって検出される。Ａ／Ｄ変換器３は、検出されたこれらアナログ信号をそれぞれデジタル信号に変換する。このように変換されたデジタル信号は波形記録部８に保存される（図２のステップＳ１）。 First, the odor in the electric chamber 6 is constantly detected by the odor sensor 1. The load currents I1, I2, I3 (each corresponding to I 1 , I 2 , I 3 shown in the figure) flowing through the conductor connections in the high voltage power receiving board 5 are respectively detected by the current sensors CT. The A / D converter 3 converts these detected analog signals into digital signals. The digital signal thus converted is stored in the waveform recording unit 8 (step S1 in FIG. 2).
匂いセンサ１の検出値Ｓ［％］及び負荷電流値Ｉ［Ａ］は、正常時の平均を０％とするとともに異常判定閾値を１００％として規格化した場合、匂いセンサ１の検出値Ｓ［％］は、図３（Ａ）に示すような特性を有する一方、電流センサＣＴによって検出された負荷電流値Ｉ［Ａ］は、図３（Ｂ）に示すような特性を有する。 When the detection value S [%] of the odor sensor 1 and the load current value I [A] are normalized with the average at the normal time being 0% and the abnormality determination threshold value being 100%, the detection value S [the odor sensor 1 %] Has the characteristic as shown in FIG. 3A, while the load current value I [A] detected by the current sensor CT has the characteristic as shown in FIG. 3B.
判定部９は、匂いセンサ１の検出値Ｓを常時監視しており、匂いセンサ１の検出値Ｓと、予め定めた異常判定閾値１００％とを比較する（ステップＳ２）。 The determination unit 9 constantly monitors the detection value S of the odor sensor 1, and compares the detection value S of the odor sensor 1 with a predetermined abnormality determination threshold 100% (step S2).
匂いセンサ１の検出値Ｓがこの異常判定閾値を超えていない場合には、判定部９は、高電圧受電盤５の導体接続部に異常発熱が発生しておらず正常であると判断し、ステップＳ１に戻ってこれを実行する。このように高電圧受電盤５の導体接続部が正常であれば接触抵抗は非常に小さいため、異常発熱検知剤２は融解せずガスが放出されない。従って、匂いセンサ１の検出値Ｓは、低い水準（０％近傍）となるため、検出閾値を超えることはない。 If the detection value S of the odor sensor 1 does not exceed this abnormality determination threshold, the determination unit 9 determines that abnormal heat generation has not occurred in the conductor connection portion of the high voltage power receiving board 5 and is normal. It returns to step S1 and performs this. As described above, when the conductor connection portion of the high voltage power receiving board 5 is normal, the contact resistance is very small, and therefore the abnormal heat detection agent 2 is not melted and the gas is not released. Therefore, since the detection value S of the odor sensor 1 becomes a low level (near 0%), it does not exceed the detection threshold.
一方、匂いセンサ１の検出値Ｓがこの異常判定閾値を超えた場合、判定部９は、導体接続部に塗布済の異常発熱検知剤２が所定温度以上となって融解したことを意味するため、導体接続部に異常発熱が発生したものと判定し、異常発生部位を特定するために、以降のようなステップを実行する。 On the other hand, when the detection value S of the odor sensor 1 exceeds the abnormality determination threshold, the determination unit 9 means that the abnormal heat detection agent 2 applied to the conductor connection portion has melted to a predetermined temperature or higher. It is determined that abnormal heat generation has occurred in the conductor connection portion, and the following steps are performed in order to identify the abnormality occurrence site.
例えば、図１に示すような異常発熱部位７において接触不良が起きた場合には、異常発熱検知２ｆが所定温度以上となり融解し、ガスが放出されるので、判定部９は、そのガスに基づく匂いセンサ１の検出値Ｓにより異常発熱が発生しているものと判定し、次のようなステップを実行する（ステップＳ２）。 For example, when a contact failure occurs at the abnormal heat generation site 7 as shown in FIG. 1, the abnormal heat generation detection 2 f becomes higher than a predetermined temperature and melts, and a gas is released. It is determined from the detection value S of the odor sensor 1 that abnormal heat generation is occurring, and the following steps are executed (step S2).
異常発熱部位７の負荷電流が大きいほど、異常発熱検知剤２からのガスの放出が大量となり、匂いセンサ１の検出値も大きくなる。以下に、このような相関を利用して異常発熱部位７を特定するための手法を説明する。 As the load current of the abnormal heat generation site 7 increases, the amount of gas released from the abnormal heat detection agent 2 increases, and the detection value of the odor sensor 1 also increases. Below, the method for identifying the abnormal heat generation site | part 7 using such correlation is demonstrated.
ここでは、図３（Ａ）及び図３（Ｂ）に示すような匂いセンサ１の検出値Ｓ及び負荷電流Ｉ１，Ｉ２，Ｉ３の時間変動を表している。負荷電流Ｉは実効値で表されている。 Here, the time variation of the detection value S of the odor sensor 1 and the load currents I1, I2, I3 as shown in FIGS. 3 (A) and 3 (B) is shown. The load current I is represented by the effective value.
判定部９は、匂いセンサ１の検出値Ｓが１００％となっている時刻t（Ｎ）から１０％以下となる時刻ｔ（１）までの期間Ｐ１における、匂いセンサ１の出力波形Ｓ（１）〜Ｓ（Ｎ）,Ｉ１（１）〜Ｉ１（Ｎ），Ｉ２（１）〜Ｉ２（Ｎ）,Ｉ３（１）〜Ｉ３（Ｎ）を波形記録部８から抽出する（ステップＳ３）。ここで、Ｎは、上記期間Ｐ１におけるサンプリング数であり、サンプリング周期はｔ（Ｎ）−ｔ（１)／（Ｎ−１）である。 Determination unit 9 determines the output waveform S (1 of odor sensor 1) during a period P1 from time t (N) at which detected value S of odor sensor 1 is 100% to time t (1) at which the detected value S is 100%. ) To S (N), I1 (1) to I1 (N), I2 (1) to I2 (N), I3 (1) to I3 (N) are extracted from the waveform recording unit 8 (step S3). Here, N is the number of samplings in the period P1, and the sampling period is t (N) −t (1) / (N−1).
次に判定部９は、抽出した匂いセンサ１の検出値Ｓの波形と、負荷電流Ｉ１，Ｉ２，Ｉ３との相関係数ｒ（１），ｒ（２），ｒ（３）を演算する。波形ｘｉとｙｉ（ｉ＝１，２，……，Ｎ）との相関係数ｒは、次式により算出する。 Next, the determination unit 9 calculates correlation coefficients r (1), r (2), r (3) between the waveform of the detected value S of the odor sensor 1 extracted and the load currents I1, I2, I3. The correlation coefficient r between the waveform xi and yi (i = 1, 2,..., N) is calculated by the following equation.
ここで、＜ｘ＞と＜ｙ＞は、それぞれｘｉとｙｉ(ｉ＝１，２，……，Ｎ）との平均値である。異常発熱部位７には負荷電流Ｉ２が流れている。そのため、図３（Ａ）及び図３（Ｂ）に示すように匂いセンサ１の検出値Ｓと負荷電流Ｉ２とが最も類似し、相関係数ｒ（２）も最大となる。相関係数の大きさは、例えば、ｒ（２）＞ｒ（３）＞ｒ（１）の順となる（ステップＳ４）。 Here, <x> and <y> are average values of xi and yi (i = 1, 2,..., N), respectively. A load current I2 flows in the abnormal heat generation site 7. Therefore, as shown in FIGS. 3A and 3B, the detected value S of the odor sensor 1 and the load current I2 are most similar, and the correlation coefficient r (2) is also maximized. The magnitudes of the correlation coefficients are, for example, in the order of r (2)> r (3)> r (1) (step S4).
最後に判定部９は、図４（Ａ）及び図４（Ｂ）に示すように、表示装置４に、異常発熱部位７の位置の推定結果を表す表示画面を表示させる。図示の表示画面例では、負荷電流Ｉ１，Ｉ２，Ｉ３が流れる場所に応じてそれぞれ区画Ａ，Ｂ，Ｃに分かれており、異常発熱部位７が存在する可能性が「高」、「中」及び「低」の文字で表示されている。 Finally, as shown in FIGS. 4A and 4B, the determination unit 9 causes the display device 4 to display a display screen that represents the estimation result of the position of the abnormal heat generation region 7. In the display screen example shown in the figure, the sections A, B and C are respectively divided according to the places where the load currents I1, I2 and I3 flow, and the possibility of the abnormal heat generation portion 7 being "high", "medium" and It is displayed with the letters "low".
区画Ａは、Ｎｏ．１，２，３の各盤である一方、区画Ｂは、Ｎｏ．４の盤の左側であるとともに、区画Ｃは、Ｎｏ．４の盤の右側である。 Section A is no. While each of the panels 1, 2, 3, and 4 is No. Section C is No. 4 while being on the left side of the fourth panel. It is the right side of the 4th board.
図４（Ａ）に示す表示画面では、異常発熱部位７が検出されていない場合を示しており、異常発熱の状態は「無」と表されており、各区画の異常発熱の可能性も「無」と表示されている。 The display screen shown in FIG. 4A shows the case where the abnormal heat generation part 7 is not detected, the state of abnormal heat generation is expressed as "absent", and the possibility of abnormal heat generation of each section is also " "No" is displayed.
一方、図４（Ｂ）に示す表示画面では、異常発熱が発生している場合を示しており、相関係数の大きさｒ（２）＞ｒ（３）＞ｒ（１）に対応させて区画Ａ，Ｂ，Ｃの異常発熱が発生している可能性をそれぞれ「低」、「高」及び「中」の文字で表されている。このようにして異常発熱部位７を含む区画Ｂが異常発熱が発生している可能性が高い位置として特定され、これを監視員が認識することができる（ステップＳ５）。 On the other hand, the display screen shown in FIG. 4B shows the case where abnormal heat generation occurs, corresponding to the magnitude of the correlation coefficient r (2)> r (3)> r (1). The possibility that abnormal heat is generated in sections A, B and C is indicated by the letters "low", "high" and "medium", respectively. In this manner, the section B including the abnormal heat generation portion 7 is identified as a position where the possibility of abnormal heat generation is high, and the supervisor can recognize this (step S5).
以上のようにすると、高電圧設備内において異常発熱が発生している異常発熱部位を簡単な構成ながら特定可能となり、巡視員は、電気室６の現場に実際に出向くことなく、遠隔にて電気室６内で異常発熱が発生しているか否か及び異常発熱部位７の位置を把握することができる。本実施の形態では、一例として１つの現場を例示しているが、このようにすると、監視員が、多数の現場を集約的に監視することができるようになるため、高電圧設備について高い信頼性を確保することが容易となる。さらに監視員は、異常発熱が発生している可能性がある箇所を示唆する表示画面に従って、高電圧受電盤５の区画を詳細点検することができるようになるため、異常発熱部位７の位置をより短時間で特定することが可能となる。このように異常発熱部位７について異常発熱が発生していることを速やかに検出することができるようになるため、火災、地絡、短絡等の事故を未然に防止し、電力設備の信頼性向上に寄与することができる。 In this way, it becomes possible to identify the abnormal heat generation site where abnormal heat generation is occurring in the high voltage equipment with a simple configuration, and the inspector can remotely go to the electric room 6 without actually going to the site of the electric room 6 Whether or not abnormal heat generation occurs in the chamber 6 and the position of the abnormal heat generation portion 7 can be grasped. In the present embodiment, one site is illustrated as an example, but in this way, since the monitoring personnel can monitor a large number of sites collectively, high reliability can be achieved for high voltage equipment. It becomes easy to secure the Further, the monitoring personnel can perform detailed inspection of the sections of the high voltage power receiving board 5 in accordance with the display screen indicating a portion where abnormal heat generation may occur, so the position of the abnormal heat generation portion 7 It becomes possible to specify in a shorter time. As described above, it is possible to promptly detect that abnormal heat generation occurs at the abnormal heat generation portion 7, thereby preventing an accident such as a fire, a ground fault, or a short circuit, and improving the reliability of the power facility. Can contribute to
（２）第２の実施の形態
図６は、第２の実施の形態による高電圧設備の診断装置の構成例を示す図である。第２の実施の形態による高電圧設備の診断装置は、第１の実施の形態による高電圧設備の診断装置とほぼ同様な構成及び動作であるため、以下の説明では両者の相違点を中心として説明する。
(2) Second Embodiment FIG. 6 is a view showing a configuration example of a high-voltage equipment diagnosis device according to a second embodiment. The diagnosis apparatus for high-voltage equipment according to the second embodiment has substantially the same configuration and operation as the diagnosis apparatus for high-voltage equipment according to the first embodiment, so in the following description, differences between the two will be mainly described. explain.
第２の実施の形態では、高電圧受電盤５が屋外に設置されている点、及び、各盤Ｎｏ．1〜Ｎｏ．４内にそれぞれ対応する特定成分検出手段の一例としての匂いセンサ１ａ，１ｂ，１ｃ，１ｄが配置されている点が、第１の実施の形態との相違点である。 In the second embodiment, the high voltage power receiving board 5 is installed outdoors, and each board No. 1 is not. 1 to No. The difference from the first embodiment is that the odor sensors 1a, 1b, 1c, 1d as an example of the corresponding specific component detection means are arranged in 4 respectively.
Ｎｏ．１，２，３の盤については、電流センサＣＴによって負荷電流Ｉ１しか流れていないことが検出されるため、盤単位で異常発熱部位７を特定することとなる。一方。Ｎｏ．４の盤については、匂いセンサ１ｄと負荷電流Ｉ２，Ｉ３の相関係数ｒ（２），ｒ（３）が第１の実施の形態と同様に計算される。図６に示すように異常発熱部位７がＮｏ．４の盤の左側に存在する場合には、電流センサＣＴによって負荷電流Ｉ２が流れることが検出されるため、ｒ（２）＞ｒ（３）となる。 No. With regard to the first, second and third panels, since it is detected by the current sensor CT that only the load current I1 is flowing, the abnormal heat generation site 7 is specified in panel units. on the other hand. No. For the fourth panel, the correlation coefficients r (2) and r (3) of the odor sensor 1d and the load currents I2 and I3 are calculated in the same manner as in the first embodiment. As shown in FIG. When the load current I2 is detected by the current sensor CT when it is present on the left side of the fourth board, r (2)> r (3).
このような相関係数に基づいて、判定部９は、図７（Ｂ）に示す表示装置４の表示画面のように、第１の実施の形態のように匂いセンサ１のみを用いて発見する場合よりも盤ごとにより細かく異常発熱部位７の位置を推定することができる。 Based on such a correlation coefficient, the determination unit 9 discovers using only the odor sensor 1 as in the first embodiment as in the display screen of the display device 4 shown in FIG. 7B. The position of the abnormal heat generation part 7 can be estimated more finely for each board than in the case.
以上のようにすると、本実施の形態によれば、第１の実施の形態と同様の効果を発揮することができるとともに、監視員に対して、異常発熱部位７についてより具体的な情報を与えてより適切な判断をさせることができる。 As described above, according to the present embodiment, the same effects as in the first embodiment can be exhibited, and more specific information on the abnormal heat generation site 7 is given to the monitoring personnel. Can make more appropriate decisions.
（３）その他の実施形態
上記実施形態は、本発明を説明するための例示であり、本発明をこれらの実施形態にのみ限定する趣旨ではない。本発明は、その趣旨を逸脱しない限り、様々な形態で実施することができる。例えば、上記実施形態では、各種プログラムの処理をシーケンシャルに説明したが、特にこれにこだわるものではない。従って、処理結果に矛盾が生じない限り、処理の順序を入れ替え又は並行動作するように構成しても良い。また、上記実施形態における各処理ブロックを含むプログラムは、例えばコンピュータが読み取り可能な非一時的記憶媒体に格納されている形態であっても良い。
(3) Other Embodiments The above embodiments are exemplifications for describing the present invention, and the present invention is not intended to be limited to these embodiments. The present invention can be implemented in various forms without departing from the gist thereof. For example, in the above embodiment, processing of various programs has been described sequentially, but it is not particularly limited. Therefore, as long as no contradiction occurs in the processing result, the processing order may be changed or operated in parallel. Further, the program including each processing block in the above embodiment may be stored in, for example, a non-transitory storage medium readable by a computer.
本発明は、高電圧設備内で発生した異常発熱を検出する高電圧設備の診断装置及びその診断方法に広く適用することができる。 INDUSTRIAL APPLICABILITY The present invention can be widely applied to a diagnostic device for high voltage equipment that detects abnormal heat generation generated in high voltage equipment and a diagnostic method thereof.
１，１ａ，１ｂ，１ｃ，１ｄ………匂いセンサ、２………異常発熱検知剤、３………Ａ／Ｄ変換器、４………表示装置、５………高電圧受電盤、６………電気室、７………異常発熱部位、８………波形記録部、９………判定部、ＣＴ………電流センサ。 1, 1a, 1b, 1c, 1d ...... odor sensor, 2 ...... abnormal heat detection agent, 3 ...... A / D converter, 4 ...... display device, 5 ...... high voltage power receiving board, 6 ...... Electric room, 7 ...... Abnormal heating area, 8 ...... Waveform recording unit, 9 ...... Determination unit, CT ............ Current sensor.
Claims (9)
前記高電圧設備の高電圧受電盤内の導体接続部及び接点に付着されており所定温度以上で融解した際に前記特定のガスを発生する異常発熱検知剤と、
前記高電圧設備の負荷電流を計測する電流センサと、
前記特定成分検出手段を用いて前記特定のガスの成分を検知することにより異常発熱が発生しているものと判定し、前記特定成分検出手段の検出値と前記電流センサの電流値との相関によって異常発熱部位を特定する判定部と、
を備えることを特徴とする高電圧設備の診断装置。 Specific component detection means which is installed in a room where high voltage equipment is disposed and which detects a specific gas component,
An abnormal heating detection agent attached to a conductor connection portion and a contact in a high voltage power receiving board of the high voltage equipment and generating the specific gas when it melts at a predetermined temperature or higher;
A current sensor for measuring the load current of the high voltage equipment;
It is determined that abnormal heat generation is occurring by detecting the component of the specific gas using the specific component detection means, and the correlation between the detection value of the specific component detection means and the current value of the current sensor A determination unit for identifying an abnormal heat generation site;
A diagnostic device for high voltage equipment, comprising:
前記電流センサによって検出される負荷電流と前記特定成分検出手段の検出値とに基づく相関係数に応じて前記異常発熱部位が発生している位置を推測する請求項１に記載の高電圧設備の診断装置。 The determination unit is
The high-voltage equipment according to claim 1, wherein the position where the abnormal heat generation site is generated is estimated according to a correlation coefficient based on a load current detected by the current sensor and a detection value of the specific component detection means. Diagnostic device.
前記高電圧設備の高電圧受電盤内の導体接続部及び接点に付着されており所定温度以上で融解した際に前記特定のガスを発生する異常発熱検知剤と、
前記高電圧設備の負荷電流を計測する電流センサと、
前記特定成分検出手段を用いて前記特定のガスの成分を検知することにより異常発熱が発生しているものと判定し、前記特定成分検出手段の検出値と前記電流センサの電流値との相関によって異常発熱部位を特定する判定部と、
を備えることを特徴とする高電圧設備の診断装置。 Specific component detection means for detecting the component of a specific gas installed on each panel of high voltage equipment;
An abnormal heating detection agent attached to a conductor connection portion and a contact in a high voltage power receiving board of the high voltage equipment and generating the specific gas when it melts at a predetermined temperature or higher;
A current sensor for measuring the load current of the high voltage equipment;
It is determined that abnormal heat generation is occurring by detecting the component of the specific gas using the specific component detection means, and the correlation between the detection value of the specific component detection means and the current value of the current sensor A determination unit for identifying an abnormal heat generation site;
A diagnostic device for high voltage equipment, comprising:
前記電流センサによって検出される負荷電流と前記特定成分検出手段の検出値とに基づく相関係数に応じて前記異常発熱部位が発生している位置を推測する請求項４に記載の高電圧設備の診断装置。 The determination unit is
The high-voltage equipment according to claim 4, wherein the position where the abnormal heat generation site is generated is estimated according to a correlation coefficient based on a load current detected by the current sensor and a detection value of the specific component detection means. Diagnostic device.
所定温度以上で融解した際に特定のガスを発生する異常発熱検知剤を前記高電圧設備内の導体接続部及び接点に付着させておく付着ステップと、
前記特定成分検出手段を用いて前記特定のガスの成分を検知することにより異常発熱が発生しているものと判定部によって判定し、さらに前記判定部が、前記高電圧設備の負荷電流を計測する電流センサの電流値と前記特定成分検出手段の検出値との相関によって異常発熱部位を特定する特定ステップと、
を有することを特徴とする高電圧設備の診断方法。 An installation step of installing the specific component detection means in the high voltage equipment;
An adhesion step in which an abnormal heat detection agent that generates a specific gas when melted above a predetermined temperature is adhered to the conductor connection portion and the contact point in the high voltage equipment;
The determination unit determines that abnormal heat generation is occurring by detecting the component of the specific gas using the specific component detection means, and the determination unit further measures the load current of the high voltage equipment An identifying step of identifying an abnormal heating site by correlation between a current value of the current sensor and a detection value of the specific component detection means;
A diagnostic method of high voltage equipment characterized by having.
前記電流センサによって検出される負荷電流と前記特定成分検出手段の検出値とに基づく相関係数に応じて前記異常発熱部位が発生している位置を推測する請求項７に記載の高電圧設備の診断方法。 The determination unit is
The high-voltage equipment according to claim 7, wherein the position where the abnormal heat generation site is generated is estimated according to a correlation coefficient based on a load current detected by the current sensor and a detection value of the specific component detection means. Diagnostic method.
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