This paper gives an analysis on the status quo of the electricity metering apparatus of high voltage electric power clients of the Xi\'ning electricity supply company and some advice for operation management of those apparatus based on the test results and operation experiences for years.

Electricity Customers Knowledge Modeling Based on Ontology;

The design principle and implementation of comprehensive evaluation management system for electricity customers’ capability of real-time contract execution are presented.

A research is given to determine the credit grade of electricity customers and classify the customers into different risk levels in or-der to enhance the prior controlling work for the power supplying company and to reduce the operating risk.

Study of synthetic credit evaluation of power clients;

Study on power customer safety evaluation model;

Comprehensive evaluation on power customer s value based on probability distribution of interval numbers;

Assessment of power customer credit risk based on extension method;

Design and realization of communication platform of Guangzhou power clients load management system;

Power supply enterprise faces the business risk caused by the electricity customers who break their promise on the supply contract.