Texas Power Grid Voltage And Reactive Power Analysis And Measures For Reducing Load Transformer Failure Rate

Along with the electrical network rapidly expand, to the power supply quality and the reliable request's enhancement, the voltage becomes the weight electrical energy quality an important target, the voltage quality is stable to the electrical network and the power equipment safe operation has the major impact. The reactive work is affects the voltage quality an important attribute, guaranteed that the voltage quality the important condition is maintains the reactive power balanced. Namely request the reactive power supplied by reactive power supply to equal in the middle of the system the reactive burden and the reactive to exhaust it in the middle of the system with, is also make electric power system in any time and any the reactive carrying always lift a hand to(include reactive offset) and reactive overall load(include total outstanding loan of reactive to hold the balance, to satisfy voltage quality requirements. The transformer substation voltage reactive controls mainly is regulate transformer tap prinipal and capacitor bank number, making the voltage hit qualified horizontal thus, lowering a line loss rate, assuring the reliability of charged barbed wire net. According to voltage reactive conditioning and burden power, multiple connection the capacitor lift a hand to of the correlation of, it carries out reactive flows reasonable symmetery. The voltage reactive in the transformer substation self-regulation and control device, is the intelligence equipment in the through station the real time collect charged barbed wire net each kind of simulation quantity and quantity of state parameter. It adopts a calculator automatic control technique and correspond by letter technique and figure semaphore techniques of handling, vs the real time monitor of electric power system voltage. It flows status and estimate an anticipation to carry out the self-regulation main transformer tap principal switch and throw to slice an offset capacitor. It makes transformer substation of female line voltage and reactive compensate to satisfy electric power system safety run-time and economic run-time of requirement. The voltage reactive controls of shape direction no longer is unipole transformer substation independence implementation voltage reactive control, but have to consider overall situation of excellent turn. It the voltage reactive for collecting of each transformer substation dot the data and control result send to adjust one degree centre or gather the host of controling the station, according to flows progress status of real time rate, to recognize each transformer substation nodal point voltage and reactive request. Vs the voltage reactive progress stratify graduation synthesis of the whole netses tune, is seen the voltage reactive control of whole net as is a stratify to graduate, dispersing right on the spot of network correlation control system. This text mainly related the radical principle of voltage reactive control and the method of transformer substation voltage and reactive control and adjust to control a principle. It also include the priniple and application of the voltage reactive automatic control device and prospecting the future in the electric power system to carry out the shape direction of voltage reactive control and carry out a whole net excellent turn the method of voltage reactive control. According to the theory it analyzes the reactive voltage condition and the reactive compensate horizontal in Dezhou region. It carries on stratify and zoning symmetery analysis by the reactive net in Dezhou region. The article points out existenting questions by the reactive compensating net in Dezhou region and proposes the whole homologous change measure and scheme according to the questions. According to a concrete event, Dezhou power supply company has the technique way to depress the broken-down rate to the load tap-changing equip of the transformer. Its help has already carried to the load tap-changing transformer to adjust the peak voltage to improved voltage and to raise electric energy mass and power supply reliability.